We are looking for an experienced Senior Software Engineer to join our team in Lisle, Illinois. In this role, you will lead the development of robust infrastructure systems and collaborate with interdisciplinary teams to deliver innovative software solutions. This position offers the opportunity to design secure systems while driving operational stability and quality.<br><br>Responsibilities:<br>• Lead the design and implementation of secure and scalable RESTful infrastructure systems.<br>• Collaborate with diverse teams, including front-end developers, designers, and product specialists, to create high-quality software solutions.<br>• Develop authentication, authorization, and identity management systems using industry-standard protocols.<br>• Create detailed documentation, including architectural diagrams and technical specifications, for infrastructure and system processes.<br>• Perform thorough code reviews to ensure adherence to quality standards and maintainability.<br>• Architect solutions with a focus on scalability, modularity, and extensibility.<br>• Maintain operational stability by monitoring system performance and addressing issues proactively.

• Proficiency in Java API for RESTful Web Services.<br>• Experience with API management tools and practices.<br>• Strong knowledge of C# programming language.<br>• Familiarity with Microsoft SQL database management.<br>• Ability to design and implement secure systems.<br>• Proven experience in developing scalable and modular software solutions.<br>• Excellent problem-solving and analytical skills.<br>• Strong communication skills for collaborating with cross-functional teams.

<h3 class="rh-display-3--rich-text">Technology Doesn't Change the World, People Do.^®</h3> <p>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.</p> <p>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. <a href="https://www.roberthalf.com/us/en/mobile-app" target="_blank">Download the Robert Half app</a> and get 1-tap apply, notifications of AI-matched jobs, and much more.</p> <p>Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster.</p> <p>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 <a href="https://roberthalf.gobenefits.net/" target="_blank">roberthalf.gobenefits.net</a> for more information.</p> <p>© 2025 Robert Half. An Equal Opportunity Employer. M/F/Disability/Veterans. By clicking “Apply Now,” you’re agreeing to Robert Half’s <a href="https://www.roberthalf.com/us/en/terms">Terms of Use</a> and <a href="https://www.roberthalf.com/us/en/privacy">Privacy Notice</a>.</p>