We are offering a contract to permanent employment opportunity for a Sr. Software Engineer in the FinTech industry, located in ITASCA, Illinois. As a Sr. Software Engineer, you will be responsible for back-end development, dealing with large volumes of data, and implementing new technologies in our fast-paced environment.

Responsibilities:
• Develop and maintain back-end Java applications.
• Utilize Java Spring, Spring Boot and JavaScript for server-side development.
• Handle large amounts of data in a high-volume, low-latency environment.
• Work with SQL RDBMS, NoSQL, and Postgres databases.
• Implement containerization with Kubernetes and Gitlab.
• Develop CI/CD pipelines.
• Stay curious and continually learn new technologies.
• Use Atlassian Jira, Business Logic, Client Side Scripting, Cloud Technologies, AB Testing, Agile Scrum, Ajax, API Development, and ASP.NET in daily tasks.

• Possess a minimum of 7 years of experience in the field of software engineering, particularly within the FinTech industry.
• Proven experience with Atlassian Jira, providing evidence of the ability to manage tasks and projects effectively.
• Demonstrable skills in Backend Development, ensuring the smooth operation of core business functions.
• Proficiency in Business Logic, capable of designing and implementing complex business rules.
• Experience in Client Side Scripting, contributing to the creation of dynamic and interactive web applications.
• Familiarity with Cloud Technologies, indicating the ability to manage and deploy applications on the cloud.
• Proven track record in conducting AB Testing, ensuring the effectiveness and efficiency of the software.
• Proficiency in Agile Scrum methodology, demonstrating the ability to work in fast-paced, iterative development cycles.
• Proven experience with Ajax, contributing to the creation of faster, more interactive web applications.
• Experience in API Development, indicating the ability to create robust and scalable APIs.
• Proficiency in ASP.NET, demonstrating the ability to build robust, scalable web applications.
• Strong experience in Core Java, showcasing the ability to develop platform-independent software solutions.
• Proven skills in Server-side Development, demonstrating the ability to develop robust, scalable server-side software.
• Experience with Spring Boot and Java Spring, indicating the ability to build enterprise-grade applications.

Technology Doesn't Change the World, People Do.^®

Robert Half is the world’s first and largest specialized talent solutions firm that connects highly qualified job seekers to opportunities at great companies. We offer contract, temporary and permanent placement solutions for finance and accounting, technology, marketing and creative, legal, and administrative and customer support roles. Robert Half works to put you in the best position to succeed. We provide access to top jobs, competitive compensation and benefits, and free online training. Stay on top of every opportunity - whenever you choose - even on the go. Download the Robert Half app and get 1-tap apply, notifications of AI-matched jobs, and much more. All applicants applying for U.S. job openings must be legally authorized to work in the United States. Benefits are available to contract/temporary professionals, including medical, vision, dental, and life and disability insurance. Hired contract/temporary professionals are also eligible to enroll in our company 401(k) plan. Visit roberthalf.gobenefits.net for more information. © 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s Terms of Use.