api developer jobs in Chicago

About Us: CodeForce 360 is a trusted global IT talent partner helping Fortune 500 companies, system integrators, and enterprise organizations build high-performing technology teams. With over 16 years of industry expertise, we combine speed, precision, and market intelligence to deliver exceptional talent across today's most in-demand...

Application Deadline:10/01/2026Address:320 S Canal StreetJob Family Group:TechnologyJob DescriptionMust Have:Leadership experience guiding other developers in a Capital Markets environmentAdvanced level Fixed Income experienceExpert Java and/or frontend (React / Typescript) experienceApplies development expertise to front and back-end systems coding combined...

Senior Backend/API Security DeveloperLead II - Software EngineeringWho We Are: Born digital, UST transforms lives through the power of technology. We walk alongside our clients and partners, embedding innovation and agility into everything they do. We help them create transformative experiences and human-centered solutions for a better world. UST is a...

Job#: 3051325 Job Description: Senior .NET Developer - Ancillary ProductsLocation: Chicago, Illinois (Onsite) Role OverviewAn experienced .NET Developer is sought to design, build, and enhance applications using the Microsoft .NET framework. This role involves developing new software solutions, improving existing systems, and collaborating with...

AbbVie is seeking a Process Engineer to support API and natural products projects through late-stage development to manufacturing. You will assess unit operations for process robustness, scale-up risks, and collaborate with technical, quality, and regulatory teams.Responsibilities include applying chemical engineering principles, designing experiments, and...

Katalyst CRO is seeking a project leader to plan and execute capital projects for the API Pilot Plant and laboratories within the Synthetic Molecule CMC Research and Development organization. You will drive projects up to $5M, coordinating with multiple teams while ensuring alignment with regulatory expectations and business goals.The role emphasizes...

General Information Job Title Senior Manager, AI & Developer Platform Product Management Job ID 108450 Work Areas Technology & Engineering Employment Type Permanent Full-Time Location(s) Boston, Chicago Description & Requirements ...

At Expedia Group, we help travelers explore the world, one journey at a time. As a global travel company powered by passionate people, trusted partnerships, and leading technology, we connect travelers, partners, and advertisers through our consumer brands, B2B network, and travel advertising business.Here, you'll do meaningful work that helps millions of...

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of...

The Secret to Getting Hired in Tech Again ? Get Interviews and Get Hired” Getting hired in tech isn't just about knowing how to code — it's about proving you can deliver value from day one. SynergisticIT helps you do exactly that. With hands‐on tech projects and personalized interview coaching, you'll build a profile that employers trust. Also get your...

Trebecon LLC is seeking a Python Developer to design, code, and deploy robust backend services in a fast-paced environment. The role emphasizes API-centric testing, automation, and collaboration with product teams to ensure quality delivery.The successful candidate will have 4+ years of testing/automation, strong Python skills, and experience with CI/CD,...

Role: Software Engineer Advanced (.NET Developer) 602 level Location: Chicago, IL 5 days onsite Job Reference: 308255-1Employment Type: Contract-to-HireRequired Visa: & GC Roles & Responsibilities:Engineer will work closely on agile feature teams projects related to .NET, MS SQL Server, C#, and Java to analyze and develop solutions for modernization of...

zerohash is seeking a Technical Support Engineer to drive the efficiency of our global value transfer infrastructure. You will analyze complex client integrations, build internal tools, and collaborate with Engineering to prioritize bugs and feedback. A few years of hands-on, technical, client-facing experience is required. You will handle incident...

Position Summary Software Engineer III with Agentic AI Experience, AI & Engineering/Engineering as a ServiceAgentic AI is moving from experimentation to production, and organizations everywhere are racing to figure out how to build it responsibly and at scale. We're growing a team of engineers who want to work at the center of that...

About Company: At ADP we use the most comprehensive data in the industry to create workplace insights that help inform products, ideas, and decisions every day. For 75 years, ADP has been building a better world of work. Learn why more than 1,000,000 clients rely on ADP and why we’re always designing for people. About the Role: As a Full Stack Developer,...

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of...

The CompanyPayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global economy. We operate a global, two-sided network at scale...

A leading tech company based in Chicago is seeking a professional for mobile-first API development and cloud-native backend engineering roles. You will design and build secure, scalable REST/JSON or GraphQL APIs and operate backend services in an AWS environment, ensuring optimal performance, security, and scalability. Collaborate in a diverse workplace...

Choosing Capgemini means choosing a company where you will be empowered to shape your career in the way you’d like, where you’ll be supported and inspired by a collaborative community of colleagues around the world, and where you’ll be able to reimagine what’s possible. Join us and help the world’s leading organizations unlock the value of...

Key Responsibilities Participate in requirements analysis, solution design, and technical planning activities Design, develop, and maintain enterprise applications using Microsoft .NET technologies Develop scalable backend services, APIs, and microservices supporting business-critical applications Build and maintain RESTful APIs and integration services...