<p><strong>Company Profile</strong></p><ul><li>Tokyo-based, renewables-focused energy trading and services company on a mission to make net zero a reality.</li><li>If you're passionate about leveraging technology, like to build robust applications and want to join a small team of tech-loving engineers, this is your chance!</li></ul><p><strong>The Role</strong></p><ul><li>As a Senior Software Engineer you will join their dynamic team and lead the development of cloud-based software services and products.</li><li>You will be work with a talented team around 6 engineers on architectural level to build innovative solutions with cutting-edge technology.</li></ul><p><Key Responsibilities></p><ul><li>Develop scalable, testable and robust containerized services and applications</li><li>Design and implement ETL and data acquisition tools using cutting-edge technologies</li><li>Lead cloud architecture deployment and maintenance using Terraform</li><li>Develop and optimize CI/CD pipelines, particularly using GitHub action workflows</li><li>Ensure security of cloud infrastructure and IT systems against potential threats</li><li>Create and maintain high-quality documentation for all development work</li><li>Develop and maintain ML/AI models for market intelligence</li></ul><p> <strong>Your Skills </strong></p><p><Required Qualifications></p><ul><li>Extensive experience in designing, building, and deploying secure, scalable software services</li><li>Strong proficiency in Python or a compiled programming language like Rust, Go, Java, C, C++, C#, etc</li><li>Experience with AWS cloud services or Azure/GCP</li><li>Familiarity with ETL tools, data processing, and analytics (e.g., dbt, Dagster, Spark, Kafka)</li><li>Experience with CI/CD pipelines and DevOps practices</li><li>Strong understanding of software security best practices</li><li>Needs to be located in Japan at time of applying</li></ul><p><Preferred Qualifications></p><ul><li>Experience with energy trading or commodities systems</li><li>Knowledge of AI/ML model development</li><li>Familiarity with the Japanese electricity industry and related IT systems</li><li>Experience with event-driven architectures and queue systems</li></ul><p><Tech Stack></p><ul><li>Cloud: AWS (VPC, S3, ECS, ECR, EventBridge, RDS, Lambda, etc.)</li><li>Languages: Python, JavaScript, SQL</li><li>Tools: Terraform, Git, GitHub Actions, Docker</li><li>Data: dbt, Dagster, Spark, Kafka</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>10 - 15 million yen</p><p><strong>Selling points</strong></p><ul><li>Green energy business! Are you keen to use technology to contribute to the sustainability of society?</li><li>Start-up atmosphere inside stable business: You will create new things without worrying about risk</li><li>Good work-life balance and flexible working mode, very casual, not much bureaucracy</li><li>Flat organization where career progression happens fast!</li><li>Opportunities to work on architectural level</li><li>International atmosphere with English being the main working language</li><li>Enjoy a collegiate environment that values knowledge sharing and end-to-end ownership</li></ul><p> </p><p>Reference Number: 06940-0013199956</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuMDI1ODIuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p> </p><p>Selling points</p><ul><li>International team structure: half of the engineers are foreigners and interview process is in English</li><li>Attractive AI products widely used by clients in Japan</li><li>Abundant learning opportunities; you can expect to do different work in a close team</li></ul><p>Company Profile</p><ul><li>My client is a company that provides AI-based accounting efficiency solutions. The product has been used widely by major companies.</li></ul><p>The Role</p><ul><li>AI model design, related system development</li><li>Continuous R&D operation of technical issues in accounting forms (including data) and new R&D</li><li>Character detection and recognition from accounting certificate holders (including data)</li><li>Structuring, classification, and information extraction from accounting forms (including data)</li><li>Importing scanned and photographed accounting certificate holders (including data), pre-processing such as distortion correction</li><li>Consulting on annotation technology related to computer vision</li></ul><p>Your Skills</p><ul><li>Knowledge of machine learning and deep learning, especially in the field of computer vision</li><li>Practical knowledge of programming, algorithms, and data structures</li><li>Research and development experience in natural language processing at a university or company, especially research and development related to document analysis</li><li>Relevant experience in designing AI models, implementing systems, and reproducing them from scratch by referring to related papers, etc.</li><li>Software implementation skills required to verify new methods</li><li>Experience in implementing and evaluating models using ML libraries such as PyTorch and Tensorflow</li><li>English proficiency sufficient to read and write papers and technical documents, and to converse in specialized fields</li><li>Japanese proficiency sufficient to analyze Japanese texts</li><li>Research experience in AI-related CV or NLP fields, and experience writing papers</li></ul><p>Salary</p><ul><li>9,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013222039</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi43NDUzNy4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Company Profile</strong></p><ul><li>My client is a tech start-up in Tokyo. With strong support from parent company and investors, it seeks to bring DX to construction world.</li></ul><p><strong>The Role</strong></p><ul><li>This role focuses on backend development for a platform providing core APIs (authentication, user/company management, data exchange), system architecture design, and collaboration with solution teams.</li><li>Experience in full-cycle web service development using languages like Node.js, Go, or Python and team-based Git workflows is required.</li></ul><p><strong>Your Skills</strong></p><ul><li>5 years or longer experience as software engineer</li><li>Business or fluent Japanese level</li><li>Experience designing and testing full web services</li><li>Commercial development experience in Node.js, Go, or Python</li><li>Team development using Git</li><li>Willingness to learn new languages if needed</li><li>Experience in requirement definition and system design</li><li>Backend development in TypeScript and Nest.js</li><li>Familiarity with Scrum methodology</li></ul><p><strong>Location </strong><br /> <br /> Tokyo<br /> <br /> <strong>Salary</strong><br /> <br /> 8 - 12 million yen<br /> <br /> <strong>Selling points</strong></p><ul><li>Stable business with rich resource and strong support from parent companies</li><li>Hybrid working style: 2 days in office</li><li>Fast, agile wat of working, you are going to see progress every month</li><li>Very friendly and supportive co-worker and leaders</li></ul><p><br /> Reference Number: 06940-0013231160</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi45MDU5OC4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Company Profile</strong></p><ul><li>Our client is a dynamic, global fintech scale-up specializing in an in-house developed payments gateway platform. Their solution consolidates multiple payment providers - from credit cards to QR codes and bank transfers - into a seamless, one-stop platform used by over 30,000 merchants primarily in Japan, with ambitious plans for overseas expansion.</li></ul><p><strong>The Role</strong></p><p><What You'll Do></p><ul><li>Design, develop, and maintain backend features for a robust payments gateway platform.</li><li>Build scalable, fault-tolerant microservices and contribute to monolithic payment systems.</li><li>Collaborate with product managers, SRE, and commercial teams to deliver high-quality solutions.</li><li>Write automated tests, maintain CI/CD pipelines, and ensure system uptime.</li><li>Proactively identify and implement improvements, including proof-of-concept work.</li><li>Participate in code reviews and help mentor junior engineers.</li><li>Communicate openly with the team via Slack and occasional meetings, contributing to a transparent and collaborative culture.</li></ul><p><strong>Your Skills </strong></p><p>What You Bring</p><p><Technical Skills></p><ul><li>Solid foundation in computer science, ideally with a relevant degree or equivalent experience.</li><li>Hands-on experience building robust software using object-oriented principles, typically gained over several years in a professional setting.</li><li>Practical exposure to functional programming concepts-whether through Scala, Kotlin, Java (with modern features), or other functional-first languages.</li><li>Proven ability to design and implement backend systems that interact with APIs.</li><li>Comfortable working with relational databases to manage and query data efficiently.</li><li>Familiar with writing and maintaining automated tests to ensure code reliability.</li><li>Regular user of Git for version control and collaborative code review.</li></ul><p><Language & Location></p><ul><li>Business Japanese (N2/N3 level preferred) for reading documentation and occasional stakeholder communication.</li><li>Business-level English for cross-functional collaboration.</li><li>Currently residing in Japan with a valid working visa</li><li>Note: This role requires you to be physically located in Japan. Remote work from overseas is not possible.</li></ul><p><Soft Skills></p><ul><li>Self-motivated and proactive with the ability to work independently in a remote setting.</li><li>Strong communication skills, comfortable with open team discussions and transparent collaboration.</li><li>Proactive problem solver who enjoys innovation beyond routine API development.</li><li>Comfortable working in a smaller team with close stakeholder interaction.</li></ul><p><Nice to Have></p><ul><li>Experience with Agile development</li><li>Experience developing systems from scratch</li><li>Experience with messaging/event-driven architectures</li><li>Experience with NoSQL databases</li><li>Familiarity with AWS services and serverless frameworks</li><li>Experience with scalable, highly available systems</li><li>Contributions to open source projects</li><li>Background in financial services</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>7 - 10 million yen</p><p><strong>Selling points</strong></p><ul><li>Choose where to work within Japan: Enjoy the freedom to work from anywhere in Japan, with the option to visit our Tokyo office for monthly meetups and face-to-face collaboration.</li><li>Innovate on Cutting-Edge Payment Systems: Build and maintain a production-grade payments gateway platform that powers over 30,000 merchants, integrating credit cards, QR codes, bank transfers, and more.</li><li>Modern Tech Stack: Work with Scala, Kotlin, Java (functional programming), AWS cloud services, microservices architecture, CI/CD pipelines, and event-driven systems.</li><li>Shape the Platform's Future: Take ownership of your work, influence technical decisions, and proactively propose improvements beyond routine API development.</li><li>Grow Your Career Your Way: Whether you want to deepen your technical expertise as an individual contributor or explore leadership opportunities, you'll find a clear path with support, learning budgets, and a culture that values autonomy.</li><li>Collaborate in a Close-Knit, Flat-Hierarchy Team: With a growing engineering team of about 20 people, including dedicated leaders who understand the needs and what excites engineers, you'll be part of a highly communicative team that embraces open Slack channels and open communication.</li><li>Continuous Learning & Innovation: Participate in tech talks, proof-of-concept projects, and a culture that encourages curiosity and ownership.</li></ul><p> </p><p>Reference Number: 06940-0013217037</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuMzEwMDMuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>Unique</strong> <strong>Selling points</strong></p><ul><li>Working in highly diverse workforce with flexibility, fast-paced nad impactful work</li><li>Strong Culture of Ownership and professional growth, all employees are treated as individual professionals with the freedom to manage their own work.</li></ul><p> </p><p><strong>Company Profile</strong></p><p>A leading company in payment industry offers a solution that integrates seamlessly with a smartphone application, allowing users to make purchases in-store or online without the need for cash or pre-loading their balance. Customers benefit from a comprehensive rewards program, earning points on every transaction that can be redeemed at a wide network of affiliated merchants, thereby enhancing user loyalty and encouraging repeat usage.</p><p> </p><p><strong>The Role</strong></p><ul><li>Creating and improving the testing process for the main system.</li><li>Planning, designing, and running tests for new product features in different work styles (like waterfall and agile).</li><li>Testing the service on computers and smartphones.</li><li>Reporting your test results and sharing feedback.</li><li>Working closely with developers, designers, and project leaders.</li><li>Suggesting and making improvements to how the product is developed.</li><li>Writing easy-to-follow manuals.</li></ul><p> </p><p><strong>Your Skills </strong></p><ul><li>Over 5 years of experience as a QA engineer (Manual testing)</li><li>Strong knowledge and experience in both Manual and Automation testing.</li><li>End-to-end QA process (Ability to understand and analyze technical specifications. Experience in creating test plans, designing tests, and executing them)</li><li>Business communication in English</li><li>(Good to have but not required) Japanese language skill.</li></ul><p> </p><p><strong>Location </strong></p><p>Tokyo</p><p> </p><p><strong>Salary</strong></p><p>6M JPY - 8M JPY</p><p> </p><p> </p><p>Reference Number: 06940-0013232046</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/V2F0dW55dS5TaXJpcGFpcm9qLjEzMzE4LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p><strong>Company Profile</strong></p><ul><li>A Global-based Technology company specializing in artificial intelligence-driven solutions for the insurance industry.</li></ul><p><strong>The Role</strong></p><ul><li>Develop and maintain scalable backend systems and APIs (FastAPI, Python).</li><li>Deploy and manage cloud infrastructure using AWS, Kubernetes, and Terraform.</li><li>Work with real-time data processing pipelines (Apache Flink, PostgreSQL).</li><li>Collaborate with cross-functional teams to deliver high-performance AI solutions.</li><li>Troubleshoot customer issues and ensure seamless system integration.</li></ul><p><strong>Your Skills </strong></p><ul><li>5+ years of software development experience in cloud, backend, or infrastructure.</li><li>Strong proficiency in Python (or similar backend languages).</li><li>Experience with AWS cloud services, Kubernetes, Terraform, and CI/CD pipelines.</li><li>Knowledge of PostgreSQL, FastAPI, and real-time data streaming.</li><li>Business Japanese & Business English - ability to work in a global team.</li><li>Strong problem-solving skills and a proactive mindset.</li></ul><p><span style="text-decoration: underline;">Nice-to-Have (but not must)</span></p><ul><li>Experience with Apache Flink, Flux, or event-driven architecture.</li><li>Prior work in AI, finance, or enterprise SaaS solutions.</li><li>Familiarity with Agile methodologies and DevOps practices.</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>7 - 12 million yen</p><p><strong>Selling points</strong></p><ul><li>Work on AI & cloud-native technologies with a forward-thinking team.</li><li>Global collaboration - work with experts across Japan and international locations.</li><li>Fully Remote - Flexible work style with a strong team culture.</li><li>Career Growth - Opportunities to lead projects and expand technical expertise.</li><li>Top-tier equipment - MacBook Pro & full home office setup.<br /> </li></ul><p>Reference Number: 06940-0013190354</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/V2F0dW55dS5TaXJpcGFpcm9qLjMzNDQyLjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p><strong>Company Profile</strong></p><p>My client is a global payment platform which is widely used by merchants around the world.</p><p> </p><p><strong>The Role</strong></p><p>Responsibilities:</p><ul><li>Identify opportunities for quality improvement, and advocate for process change in order to strengthen the quality of our products</li><li>Work closely with engineering teams, product managers, and other stakeholders to understand technical requirements and provide input on design considerations</li><li>Develop test plans appropriate for the scope and scale of our projects</li><li>Execute manual and exploratory tests</li><li>Identify, document, and prioritize defects and issues</li><li>Build new and innovative test automation solutions</li><li>Contribute toward building a culture of quality by helping to define quality processes in a team with maturing QA practices</li><li>Proactively collaborate with engineering and business teams</li></ul><p> </p><p><strong>Your Skills </strong></p><p>Requirements:</p><ul><li>You are proficient in at least one programming language (e.g. JavaScript, TypeScript, Ruby - though not limited to these) - a bonus if you have experience that goes beyond writing automated tests</li><li>In-depth hands on experience with automated testing tools like Playwright, Capybara, and RSpec (though not limited to these)</li><li>You love to empower other engineers and strive to understand how to help them deliver quality features and products for our customers</li><li>Collaborative mindset and eagerness to learn and grow</li><li>Comfortable building processes where they may not yet exist</li><li>You have excellent debugging skills</li><li>You can run with ambiguous requirements and have a strong bias to action</li><li>You have a tester mindset, are curious, and come up with interesting test scenarios</li><li>Experience with cloud platforms (e.g. AWS)</li><li>Experience with designing release/regression/smoke-testing strategies</li><li>Experience with manual and exploratory testing</li><li>Experience creating and executing test plans</li></ul><p> </p><p>Nice to haves:<br /> While not specifically required, tell us if you have any of the following.</p><ul><li>Experience with performance testing</li><li>Experience with testing mobile applications</li><li>Experience with multilingual applications</li><li>Experience using observability tools (e.g. Datadog)</li></ul><p> </p><p><strong>Location </strong></p><p>Tokyo</p><p> </p><p><strong>Salary</strong></p><p>7M JPY - 11M JPY</p><p> </p><p><strong>Selling points</strong></p><ul><li>We embrace remote work while also offering office space for those who prefer in-person collaboration</li><li>10 days regular vacation, an additional 5 day summer and 5 days winter vacation, paid birthday holiday</li><li>Budget for self-learning allowance, to ensure our employees' skills remain current</li><li>Japanese learning support!</li></ul><p> </p><p>Reference Number: 06940-0013209964</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi41NjIyNS4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Company Profile</strong></p><ul><li>This is a technology company specializing in data integration, AI analysis, and business growth support. Led by executives from former Big Tech companies, we offer products that provide data processing, visualization, and AI-driven insights, along with specialized consulting services. Utilizing cloud technologies and open-source software (OSS), we enhance system performance, develop search engines and automation tools, and maximize data utilization for businesses.</li></ul><p><strong>The Role</strong></p><ul><li>Performance improvement and career support based on optimizing the engineering organization</li><li>Recruitment activities for organizational expansion</li><li>Resource allocation for project execution</li><li>Environment optimization to enhance development efficiency (deployment optimization, information sharing)</li><li>Support and review of the following tasks:</li></ul><ol><li>Development of recommendation, search, and ad delivery engines, including new feature development and performance improvement</li><li>Initiatives to enhance development efficiency (deployment optimization, information sharing), load testing, and security measures</li><li>Database design</li><li>24/7 stable system operation</li><li>Identification and resolution of technical issues in the system</li><li>Development of automation and cost-reduction tools for operations</li></ol><p> <strong>Your Skills </strong></p><ul><li>Experience in managing multiple development teams consisting of 10 or more members and providing technical leadership in development environments</li><li>Experience in talent development, performance evaluation, and driving the establishment and strengthening of organizational structures</li><li>Experience in collaborating with HR to promote engineer recruitment and technical branding</li><li>Bachelor's degree in Computer Science or equivalent knowledge and work experience</li><li>Ability and willingness to learn new technologies, tools, and programming languages as needed</li><li>Flexibility to adapt to changing situations</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>15 - 20 million yen</p><p><strong>Selling points</strong></p><ul><li>Lead data utilization to a global level as an Executive Director</li><li>Make a direct impact as a Senior Manager in a fast-growing startup</li><li>Drive innovation through cutting-edge technology in products and services</li><li>Leverage the latest technology to transform businesses with data solutions </li></ul><p> </p><p>Reference Number: 06940-0013180858</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/VmljdG9yaWFSeW8uNjM2NzEuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><p> - International team atmosphere<br />- Attractive AI products widely used by clients in Japan<br />- Abundant learning opportunities<br />- We communicate in English at work</p><p> </p><p>Company Profile</p><p>We are an AI driven product company that provides accounting efficiency solutions. We went to public in September 2023 and now have more than 100 employees. Our product has been used widely by major clients like KDDI, Kao, Suntory, and NTT Data etc.</p><p>The Role</p><p>- New function development for key product in collaboration with PdM and front-end engineers, etc.</p><div class="--b--588 "><div class="-Ch-622 " data-automation-id="questionContent"><div class="-Nt-624 --ue-625"><div class="--lr-658"><div class="-Iz-689"> - API development<br /> - Application design for table design and function development<br /> - Bug fixing in collaboration with QA, etc.<br /><br />Development languages: Node.js(TypeScript) / Golang<br /><br />In order to continuously improve system development to enhance experience, quality, and development efficiency, and to improve the development capabilities of the entire team, we never fail to provide technical input and encourage participation in and sponsorship of study groups.</div><div class="-Iz-689"> </div></div></div></div></div><div class="--b--588 "> </div><div class="--b--588 "> </div><div class="--b--588 ">Your Skills</div><p> Must:<br />・API development experience using Node.js(TypeScript) or Golang<br />・Experience in API interface design<br />・Experience in development using Git<br />・Experience in table design and back-end development using RDB<br />・Minimum communication skills in English for meetings, etc.<br /><br />Preferred:<br />・Experience in development using API mock/stub<br />・Experience in CI/CD development<br />・Experience in DB performance tuning<br />・Experience in building infrastructure with Kubernates / AWS<br />・Experience developing accounting related systems<br />・Experience in system integration with ERP<br />・Experience in developing systems related to accounting<br />・Experience in developing systems linked to ERP<br />・Able to actively contribute his/her experience to the team.<br /><br />We would love if you are/have...<br />・Applicant have a passion for development<br />・Mindset to actively contribute Applicant's experience to the team.<br />・Mindset to adopt new technologies<br />・Those who value working in a team-oriented environment.<br />・Those who can feel the value of accomplishing a big task.</p><p> </p><p>Salary</p><ul><li>7,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number :06940-0013221296</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi45ODQ2My4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p>Selling Points</p><ul><li> <What's In It For You?><br /><br />Work from Anywhere in Japan: Embrace a truly remote-first culture-engineers typically visit the Tokyo office just once a month (if at all). Enjoy the freedom to design your work-life balance, whether you're in Tokyo or elsewhere in Japan. Must be in Japan.<br /><br />No Japanese Required: English is the language of collaboration. You'll work in a diverse, international team where your skills-not your language ability-open the door to exciting projects.<br /><br />Impact at Scale: Your code will help drive payment infrastructure for some of the world's most recognized online brands. You'll be building systems that support thousands of merchants as they expand into new markets-proof that this company is both stable and scaling fast.<br /><br />Career Growth in a Thriving Environment: The company is planning to triple in size over the next few years, offering you the chance to grow with the business and take on new challenges as they emerge.<br /><br />Startup Agility, Established Foundation: Experience the best of both worlds-move fast, take ownership, and innovate in a company that has already proven its business model and product-market fit.<br /><br />Learning & Development: Receive up financial support for books, courses and conferences. Take advantage of language lessons and regular internal tech events to keep your skills sharp.<br /><br />Generous Time Off: Over 20 days of paid leave per year, including seasonal and birthday holidays, so you can recharge and pursue your passions outside of work.<br /><br />Inclusive, Flat Culture: Engineers play a key role in both product and technical decisions. You'll have a real voice and the autonomy to shape your own growth path.</li></ul><p> </p><p>Company Profile</p><ul><li>Join a globally recognized tech innovator in Tokyo that's redefining digital payments for the world's most dynamic brands.<br />This is your chance to be part of a company that, while still in a high-growth phase, is already powering payment solutions for major international platforms and e-commerce leaders.<br />Enjoy the stability of an established product company-without the bureaucracy of a large enterprise.</li></ul><p> </p><p>The Role</p><ul><li> <What You'll Do><br />Collaborate with a talented team to design, build, and scale robust payment systems and new product features<br />Work with modern OOP languages and frameworks (Ruby, Rails, Vue.js, React, or similar)<br />Drive best practices in code quality, testing, and security<br />Contribute to a culture of continuous improvement and knowledge sharing</li></ul><p> </p><p>Your Skills</p><ul><li> <What We're Looking For><br /><br />3+ years of experience building and scaling web applications or APIs<br />Strong foundation in object-oriented programming and design patterns<br />Experience with secure, reliable integrations and scalable architecture<br />Startup or product company background is a plus<br />English fluency required; Japanese is optional<br /><br /><br /><Bonus Points For><br /><br />Ruby on Rails, Vue.js, React, or TypeScript experience<br />Payments or fintech background<br />Business-level Japanese</li></ul><p> </p><p>Salary</p><ul><li>6,000,000 yen - 9,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013208237</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuNzY4NjIuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><ul><li>Massive Scale and Complexity<br />You'll work on the backend of one of the most widely used platforms, processing tens of billions of traffics daily. Few companies operate at this scale, offering rare hands-on experience with high-throughput, low-latency systems.</li><li>Real-World Impact<br />The platform is more than a chat app-it's a critical infrastructure for daily communication, business services, and government interactions. Your work will directly affect millions of users and thousands of organizations.</li><li>Cutting-Edge Engineering Challenges<br />You'll tackle high-performance backend design, distributed systems, traffic optimization, and platform reliability-ideal for engineers who enjoy deep technical challenges and meaningful problem-solving.</li></ul><p>Company Profile</p><ul><li>A leading Japan-based technology company that focuses in online media, e-commerce, and fintech. The organization operates a widely used communication platform with integrated services such as digital payments and lifestyle tools, alongside a prominent web portal offering search, news, and advertising solutions. With strong backing from a global telecommunications and investment group, the company is focused on building an all-in-one digital ecosystem that supports millions of users in their daily online activities across communication, information access, and transactions.</li></ul><p>The Role</p><ul><li>Responsible for backend development of a large-scale communication platform that processes tens of billions of messages daily.</li><li>The role involves building and enhancing core infrastructure to ensure high performance, scalability, and reliability under massive traffic volumes.</li><li>Work includes supporting both user-facing messaging services and backend systems used by businesses and external partners integrated into the platform.</li><li>Focus is on continuous optimization of system resources, maintaining operational stability, and delivering backend solutions that provide greater value to internal teams and end users alike.</li></ul><p>Your Skills</p><ul><li>Required Experience/Skills</li><li>Server-side development experience (JVM language or C/C++) (3 years or more)</li><li>Experience in operating production systems in a Linux/Unix environment</li><li>Experience in database operations (MySQL, Redis, HBase, Cassandra, Elasticsearch, etc.)</li></ul><p><br />Desirable experience/skills</p><ul><li>Experience in designing and developing server applications and databases in high traffic environments</li><li>Knowledge of JVM tuning and monitoring</li><li>Major in computer science or related field at university or graduate school</li><li>Business level English (reading and writing)</li></ul><p>Salary</p><ul><li>13,000,000 yen - 18,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013209961</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/VmljdG9yaWFSeW8uNzkwMDQuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
