Senior Software Engineer (Rust / Kubernetes)<p><strong>Company Profile</strong></p><ul><li>We are seeking a Senior Software Engineer to join our client, a dynamic and innovative company that's revolutionizing the manufacturing industry.<br /> They are a rapidly growing tech firm that's transforming how manufacturers handle design data and supply chain operations.</li></ul><p><strong>The Role</strong></p><ul><li>As a Senior Software Engineer in the Core Engineering team, you will play a crucial role in enhancing developer productivity and improving our development environment. Your work will focus on providing tools and infrastructure that reduce cognitive load on developers by "separating concerns."</li></ul><p><Key Responsibilities></p><ul><li>Developing tools and infrastructure to enhance developer productivity</li><li>Collaborating with cross-functional teams to deliver high-value solutions</li><li>Improving development processes and environments</li></ul><p><Tech Stack></p><ul><li>Backend: Rust, TypeScript, Node.js</li><li>Machine Learning/AI: Rust, Python, Vertex AI, PyTorch, OpenCV, TorchServe, Elasticsearch</li><li>Infrastructure: GCP, Kubernetes</li><li>DevOps: GitHub, Terraform</li><li>Data: PostgreSQL, BigQuery, dbt, Alloy</li><li>Communication: Slack, JIRA</li></ul><p><strong>Your Skills </strong></p><p><Required Qualifications></p><ul><li>Solid hands-on software development experience (At least 7 years)</li><li>A track record of leading engineering initiatives as Senior Engineer or Tech Lead</li><li>Expertise in web application development using strongly-typed languages</li><li>Excellent communication skills in either English or Japanese</li><li>Needs to be located in Japan at time of applying</li></ul><p><Preferred Qualifications></p><ul><li>Containerization technologies like Kubernetes</li><li>Infrastructure-as-Code practices</li><li>Experience in Rust</li><li>Leading on architectural level and design of entire systems including implementation</li><li>CI/CD pipeline design and implementation</li><li>Cloud platforms, particularly GCP</li><li>Data engineering and ETL processes</li><li>Conversational-level Japanese proficiency</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>Solve challenging problems alongside an enthusiastic team.</li><li>You will contribute to not only local but also international product development</li><li>Contribute to products that have the potential to change the manufacturing landscape.</li><li>Opportunity to be involved on system level projects that has big impact to the overall business</li><li>Work in a multinational environment where all technical meetings are conducted in both English and Japanese</li><li>Enjoy flexible remote work options with occasional in-office days for team interaction.</li><li>As half of the employees are parents and the company offers great work life balance to support them</li></ul><p>Reference Number: 06940-0013135423</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/S2hhbmcuTGUuMDE0MzcuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">Senior Software Engineer<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">Senior Data Engineer<p><strong>Company Profile</strong></p><p>With a strong commitment to digital transformation, it leverages data-driven strategies to enhance customer experiences, optimize operations, and drive innovation across its franchise network. Data engineers here play a key role in building scalable data infrastructure, enabling real-time analytics, and supporting business decisions that impact millions daily.</p><p> </p><p><strong>The Role</strong></p><ul><li>Design & Build Scalable Data Infrastructure - Develop and optimize data pipelines, ensuring efficiency, security, and scalability.</li><li>Define & Standardize Metrics - Collaborate with stakeholders to establish clear, actionable KPIs that align business and technical perspectives.</li><li>Address Data Fragmentation - Integrate data from multiple systems to improve aggregation, visibility, and accessibility for analytics and decision-making.</li><li>Ensure System Reliability - Maintain high system availability and performance while transitioning to real-time data processing.</li><li>Lead the Shift to Real-Time Data - Migrate from batch processing to real-time data pipelines with minimal disruption to business operations.</li></ul><p> </p><p><strong>Your Skills </strong></p><ul><li>Proficient in real-time data pipeline development (Snowflake preferred, BigQuery, SQL Server)</li><li>Experience in modern data architecture (Data Vault) and high-volume, low-latency ETL/ELT</li><li>Proficient in SQL, Python, Git, YAML, JSON</li><li>Japanese: Business Level is a must (primary) and English<br /> Cloud & Data Platforms: Azure (preferred), GCP, or AWS; Knowledge of data catalog and data governance Process & Methodology</li><li>Experience with CI/CD pipelines and automation for scalability and reliability</li><li>Familiar with Azure DevOps and Agile development</li></ul><p><strong> </strong></p><p><strong>Location </strong></p><p>Tokyo</p><p> </p><p><strong>Salary</strong></p><p>9M JPY - 11M JPY</p><p> </p><p><strong>Selling points</strong></p><ul><li>Unique Business Model: A "small big company"-massive in scale and brand recognition yet agile in operations. Easy cross-division communication enables direct collaboration with key decision-makers.</li><li>High Impact Role: Influence business strategies by understanding how different divisions use data to drive decisions and optimize operations.</li><li>Large-Scale Data: Work with vast and diverse data sets, offering exciting challenges in data engineering, optimization, and innovation.</li><li>Manager coming from GAFAM</li></ul><p> </p><p>Reference Number: 06940-0013157821</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/TGluaC5EYW5nLjg5NTc4LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">Senior Software Engineer - Renewable Energy Trading<p><strong>Company Profile</strong></p><p>Our client is a Tokyo-based, renewables-focused energy trading and services company on a mission to make net zero a reality. They're building an unrivalled energy-trading platform that leverages innovative technologies and advanced methodologies to revolutionize the Japanese energy market.</p><p> </p><p><strong>The Role</strong></p><p>We're seeking an experienced Senior Software Engineer to join their dynamic team and lead the development of cloud-based software services and products. This is a unique opportunity to work on architectural level while working in a fast-paced, innovative environment.</p><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> </p><p><strong>Your Skills </strong></p><p>【Required Qualifications】:</p><ul><li>Business level Japanese (reading and writing)</li><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>Needs to be located in Japan at time of applying</li></ul><p>【Any of the following would be highly welcome】:</p><ul><li>Good level of English</li><li>Understanding of software security best practices</li><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> </p><p><strong>Location </strong></p><p>Tokyo</p><p><strong> </strong></p><p><strong>Salary</strong></p><p>9M JPY - 14M JPY</p><p> </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 and English is 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: 06940-0013148528</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/S2hhbmcuTGUuMzM2OTUuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">Senior Frontend Engineer (React Native) - Fintech Innovator<p><strong>Company Profile</strong></p><p>A leading fintech company in Tokyo is seeking a talented Senior Front-end Engineer to join their innovative team. This role offers a unique chance to work on cutting-edge payment solutions that are transforming the e-commerce landscape in Japan.</p><p><strong>The Role</strong></p><ul><li>About the Role:<br /> As a Senior Frontend Engineer, you'll be at the forefront of developing and improving user experiences for both consumers and merchants. You'll work on a variety of projects, from consumer-facing applications to merchant tools and internal systems.</li><li>Key Responsibilities:<br /> Develop and enhance React and React Native applications for multiple platforms<br /> Create intuitive and efficient user interfaces for complex financial products<br /> Collaborate with cross-functional teams to deliver high-quality solutions<br /> Contribute to the evolution of the company's front-end architecture and best practices.</li></ul><p><strong>Your Skills </strong></p><ul><li>Required Qualifications:</li></ul><p>Degree in Computer Science, Engineering, or equivalent practical experience<br /> Strong experience with React.js and React Native<br /> Proficiency in modern JavaScript (ES6+) and related tools (Redux, Webpack)<br /> Experience integration of APIs for iOS and Android platforms<br /> Familiarity with native mobile development tools (Xcode, Android Studio)<br /> Experience with performance optimization and accessibility in web applications<br /> Ability to write clean, maintainable and well-tested code<br /> Strong problem-solving skills and attention to detail<br /> Excellent communication skills in English</p><ul><li>Preferred Qualifications:</li></ul><p>Experience with in Fintech domain or payment products<br /> Familiarity with B2C user experience design<br /> Knowledge of TypeScript and Flow</p><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>6M JPY - 8.5M JPY</p><p><strong>Selling points</strong></p><ul><li>Opportunity to work on products used by millions of consumers in Japan</li><li>English working environment</li><li>Collaborative and innovative work environment</li><li>Continuous learning and professional growth opportunities</li><li>Competitive salary and benefits package with high working flexibility like remote work and full flex time</li></ul><p>Reference Number: 06940-0013135424</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/S2hhbmcuTGUuMTU4MjIuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">Software Engineer with advertising exp (Ad Tech / SSP / DSP)<p><strong>Company Profile</strong></p><ul><li>We are seeking a Senior Software Engineer to join a rapidly growing, innovative company that's revolutionizing mobile power solutions.</li><li>They are market leader in Japan with a strong international presence, expanding across Asia.</li><li>Their technology is not just convenient; it's gaining recognition for its potential in disaster preparedness.</li><li>As they continue to grow, they are looking for talented individuals to help shape the future of mobile energy.</li></ul><p><strong>The Role</strong></p><ul><li>As a Senior Software Engineer in their Product Engineering team in Tokyo, you'll be at the forefront of developing and optimizing our cutting-edge advertising systems.</li><li>You'll work with a dynamic team of around 10 engineers, collaborating with external partners to build innovative solutions that drive our business forward.</li></ul><p><Key Responsibilities></p><ul><li>Design, develop, and maintain scalable advertising systems</li><li>Optimize database schemas and perform query tuning for high-performance applications</li><li>Collaborate with cross-functional teams and external partners</li><li>Contribute to the improvement of development processes</li><li>Manage the development team and drive process improvements</li><li>Take ownership of software development initiatives</li></ul><p><strong>Your Skills </strong></p><p><Required Qualifications></p><ul><li>Strong experience in backend development (Java or Kotlin)</li><li>Strong knowledge of large-scale web application development and operations</li><li>Expertise in database schema design and SQL optimization</li><li>Ability to take ownership and drive software development initiatives</li><li>Business-level proficiency in Japanese</li><li>You must be eligible to work in Japan</li></ul><p><Preferred Qualifications></p><ul><li>Experience with SSP (supply side platform) / DSP (demand side platform)</li><li>Experience launching new services or working in high-growth environments</li><li>Startup or venture company experience</li><li>Background in payment / coupon business</li><li>English or Chinese proficiency</li><li>Experience developing software with a sense of ownership</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>10 - 14 million yen</p><p><strong>Selling points</strong></p><ul><li>Be part of a high-growth company listed on the Tokyo Stock Exchange</li><li>Gain experience in a market-leading business with over 80% market share in Japan and expanding globally</li><li>Develop cutting-edge technology in mobile power solutions with real-world impact</li><li>Opportunity to work on projects recognized by government agencies</li><li>Enhance your skills in large-scale, high-performance advertising systems</li><li>Collaborate with a diverse team in a dynamic, fast-paced environment</li><li>Chance to make a significant impact on a product used by millions</li><li>Work-life balance with flexible work arrangements and unique benefits</li><li>Benefits like work from abroad / oversea</li></ul><p>Reference Number: 06940-0013161669</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/S2hhbmcuTGUuMjczMTkuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">