Sr. Software Engineer

We are looking for a Sr. Software Engineer to contribute to the design and delivery of scalable backend and platform solutions supporting modern cloud-based applications. This Long-term Contract position offers the opportunity to work with cross-functional engineering teams in Chicago, Illinois while building services, APIs, and foundational infrastructure in a collaborative environment. The ideal candidate brings strong software development expertise, enjoys shaping solutions in newly established environments, and can help turn technical concepts into reliable implementations. Responsibilities: • Develop and maintain backend applications, platform components, and service integrations using technologies such as C#, .NET, Python, Node.js, and related tools. • Design and implement secure, scalable APIs and distributed services aligned with cloud-native and microservices-based architecture principles. • Build application and infrastructure solutions from the ground up, supporting greenfield initiatives through planning, development, deployment, and optimization. • Automate provisioning and release processes by applying Infrastructure as Code practices to cloud environments and platform services. • Collaborate with architects, engineering leads, and peer developers to translate technical strategies into well-structured, production-ready solutions. • Support the setup and improvement of cloud infrastructure, backend systems, and platform capabilities to ensure performance, reliability, and maintainability. • Contribute to technical discussions, code reviews, and engineering best practices that promote high-quality delivery across the development lifecycle. • Explore and incorporate emerging tools and frameworks, including AI-enabled development technologies when relevant to project goals. • At least 5 years of experience in platform engineering, backend development, software engineering, or cloud engineering roles. • Strong hands-on programming experience with C#, .NET, Python, Node.js, or similar backend technologies. • Demonstrated success designing, building, and deploying backend services and APIs in modern application environments. • Solid understanding of microservices, cloud-native development patterns, and contemporary application frameworks. • Experience using cloud platforms in workplace settings; broader cloud expertise is highly preferred. • Background in Infrastructure as Code and automation for application or infrastructure deployment workflows. • Familiarity with JavaScript, TypeScript, or React.js is preferred. • Exposure to AI-related engineering tools such as LangChain, LangSmith, or comparable technologies is considered a plus. 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. Our specialized recruiting professionals apply their expertise and utilize our proprietary AI to find you great job matches faster. 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. B