API Jobs in Chicago, IL

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Senior Manager, Software Engineering, Full Stack (Java, AWS, API, Python, React)

Capital One

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Chicago, Illinois, USA

Full-time

Senior Manager, Software Engineering, Full Stack (Java, AWS, API, Python, React) Do you love building and pioneering in the technology space? Do you enjoy solving complex business problems in a fast-paced, collaborative, inclusive, and iterative delivery environment? At Capital One, you'll be part of a big group of makers, breakers, doers and disruptors, who solve real problems and meet real customer needs. We are seeking Full Stack Software Engineers who are passionate about marrying data wit
Posted 16 hours ago | Updated 15 hours ago

QE API Automation test Lead (Need only locals of Chicago)

StarTechs Inc.

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Chicago, Illinois, USA

Third Party, Contract

Min 10+ years of experience with Automation and Manual testing wiht min 2 years of Test lead expertiseStrong API testing skills with functional and automation (REST/Postman)Able to Analyze requirementsPrepare Test Plans, Testing requirementsGood at interaction with Business Teams if any clarifications and work with offshore functional and automation leads to drive the testingReview Test Strategy/Test Plan/Test CasesPerform Sanity / Functional / Regression Testing and report the consolidated test
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Posted 10 days ago | Updated 3 days ago

Gloo Envoy API Gateway Lead Developer /Architect

Intelliswift Software Inc

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Remote or Alpharetta, Georgia, USA

Full-time

Must Have skills: Gloo Gateway Any other Envoy-based API Gateway Experience Java Programming React Kubernetes & Container Orchestration Microservices GitOps & Configuration Management JD: Job Title: Gloo Envoy API Gateway Lead Developer /Architect Position Overview: We are seeking a talented and motivated Developer to join our team in building a new API Gateway Platform. The ideal candidate will have experience in developing self-service tools and abstractions for onboarding new APIs, as well as
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Posted 12 days ago | Updated 12 days ago

Azure/API Solution Architect with RPA

RiseIT Solutions

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Remote

Contract, Third Party

Company: iTech US, Inc. Job Title: Azure/API Solution Architect with RPA Location: Remote Job Responsibilities: A proven track record working as part of a team on large/complex systemsArchitectural/technical experience with cloud native especially Azure Cloud and their platform as a service offerings.Experience with RDBMS and/or NoSQL databases (i.e. MongoDB). Understands the benefits and trade-offs of both. Familiar with normalization and denormalization, sharding, and other data-centric patte
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Posted 5 hours ago

IBM API connect and Datapower consultant

SYSTEM SOFT TECHNOLOGIES LLC

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Remote

Contract

System Soft Technologies is widely recognized for its professionalism, strong corporate morals, customer satisfaction, and effective business practices. We provide a full spectrum of business and IT services and solutions, including custom application development, enterprise solutions, systems integration, mobility solutions, and business information management. System Soft Technologies combines business domain knowledge with industry-specific practices and methodologies to offer unique solution
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Posted 5 days ago

IBM API Connect & DataPower Developer

SYSTEM SOFT TECHNOLOGIES LLC

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Remote

Contract

Remote IBM App Connect Enterprise' , 'IBM API Connect' and IBM DataPower Additional skills : DevOps and Agile ONLY W2 NO CORP TO CORP OPEN TO SPONSORSHIP Must have Expert proficiency in IBM Integration Bus is required. Advanced proficiency in IBM API Connect is recommended. Advanced proficiency in IBM WebSphere DataPower and Agile Application Development Develop innovative application solutions that enhance user experience and meet business needs.Conduct thorough testing and debugging to en
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Posted 5 days ago

W2 - .NET Web Devloper II (Full Stack, SQL Server, Cloud, API, Stored Procedures) - Remote/Local

Tanson Corp

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Remote or Madison, Wisconsin, USA

Contract

Description: The client is looking for 1 .NET Web Developer II position Will close to submissions on 7/28/25 at 4:00PM CST. Top Skills: Candidate must have at least 6 years of proven experience as a Full Stack Developer (emphasis on back end) with expertise in .NET technologies, including ASP.NET, C#, .NET Core, Entity Framework, etc. Experience with database technologies such as SQL Server, in hybrid on premise and cloud environment. (6+ years) Experience with server-side event-driven program
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Posted 1 hour ago

API Integration Architect

TechDigital Corporation

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Remote or Santa Clara, California, USA

Contract, Third Party

As an API Integration Architect the resource should be architecting, designing, and implementing API solutions across various industries. Should be able adept at leveraging cloud technologies, microservices architecture, and best practices in API management to deliver robust and scalable solutions. 12+ year 7-10 years of designing, developing, and implementing API solutions across various industries. Adept at leveraging cloud technologies, microservices architecture, and best practices in API m
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Posted 11 days ago

Senior Software Engineer, API Infra

Airbnb

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Remote

Full-time

Airbnb was born in 2007 when two hosts welcomed three guests to their San Francisco home, and has since grown to over 5 million hosts who have welcomed over 2 billion guest arrivals in almost every country across the globe. Every day, hosts offer unique stays and experiences that make it possible for guests to connect with communities in a more authentic way. The Community You Will Join: The Core Services team provides common application building blocks that are widely applicable across Airbnb
Posted 20 days ago | Updated 1 hour ago

WSO2 API Manager - Middleware

Techwizens LLC

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Remote

Full-time, Third Party

"The Middleware Cloud Services Engineer will be a hands-on technical engineer that will be accountable for Software development, R&D and operations in support of the Enterprise Integration Platform at Bank On this team, you will face a wide array of technical challenges that greatly impact our business. This team works closely across the Cloud Transformation Organization, Enterprise Architecture, Security, Engineering and Operations organizations, in order to deliver next generation capabilities
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Posted 3 days ago

Software Engineer - API Integrations

Kforce Technology Staffing

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Remote or Grand Rapids, Michigan, USA

Contract, Third Party

RESPONSIBILITIES: Kforce has a client in Grand Rapids, MI that is seeking a Software Engineer - API Integrations responsible for developing API integrations between financial software and ServiceNow. Responsibilities: * Collaborate with a team of fellow developers to implement API integrations * The Software Engineer will fix bugs based on priority defined by your team lead * Maintain updates on your active user stories within ServiceNow * Build and update flows and modules in ServiceNow * Atten
Posted 10 days ago | Updated 2 hours ago

API Engineer

Kforce Technology Staffing

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Remote or Brooklyn, New York, USA

Contract

RESPONSIBILITIES: Kforce has a client that is seeking an API Engineer in Brooklyn, NY. Summary: We're looking for a skilled Backend Engineer to support the development of mobile shopping experiences. This role focuses on backend/API development and will be part of a cross-functional team that includes product managers, designers, mobile app engineers, and backend developers. Responsibilities: * Design and maintain backend services that power mobile applications * Collaborate with iOS and Andro
Posted 12 days ago | Updated 2 hours ago

API Operations Consultant

Information Technology Group

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Remote

Contract

3 Positions: API Operations Consultant Could the duration be extended? Yes, possibly it depends on demand Is there potential for permanent hire? Yes Is specific industry experience required? Not an absolute, but highly preferred to have insurance domain experience JOB DESCRIPTION: Please review the job description in Fieldglass. If your job differs, please provide an accurate and complete job description. Please take time to review the job description in FG and highlight the differences below:
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Posted 14 days ago

Sr. API Developer - ServiceTitan, Paylocity

SYSTEM SOFT TECHNOLOGIES LLC

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Remote

Contract, Third Party

Remote Must have APIs: ServiceTitan, Paylocity Authentication: OAuth 2.0, API tokens Backend: Node.js, Python, .NET (flexible based on experience) Frontend: React or Angular (light UI development) Data: JSON, REST, control totals, validation schemas Dev Tools: Postman, Git, Jira, VS Code (or preferred IDE) Required Skills & Experience: Experience in API design and systems integration.Strong knowledge of RESTful APIs, OAuth 2.0, and secure data transfer.Proven experience integrating third-party s
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Posted 3 days ago

Platform Business Analyst (SQL/Snowflake/API)

AFLAC

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Remote

Full-time

Salary Range: $81,000 - $115,000 Job Posting End Date: July 31, 2025 We've Got You Under Our Wing We are the duck. We develop and empower our people, cultivate relationships, give back to our community, and celebrate every success along the way. We do it all The Aflac Way . Aflac, a Fortune 500 company, is an industry leader in voluntary insurance products that pay cash directly to policyholders and one of America's best-known brands. Aflac has been recognized as Fortune's 50 Best Workplaces f
Posted 9 days ago | Updated 10 hours ago

API & Kafka Automation Engineer (Python Backend)

Nous Infosystems

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Remote

Contract

Job Title: API & Kafka Automation Engineer (Python Backend) NYC - Remote Job Description: We are seeking an Automation Engineer with expertise in API testing, Kafka, and Python backend development. The role involves building automated test frameworks, validating Kafka data streams, and ensuring the performance and reliability of APIs and backend systems. Key Skills: Strong experience in API automation and Kafka (producers/consumers).Proficient in Python for scripting and backend logic.Hands-on w
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Posted 4 days ago

SDET with Strong HL7 Standards & API Postman Experience; Healthcare Industry Background- No C2C via third party

Wise Equation Solutions Inc.

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Remote

Contract

Job Title: Software Development Engineer in Test (SDET) Location: Remote (USA Only) Job Type: Contract - 3 Months About the Role We re seeking a Software Development Engineer in Test (SDET) for a short-term contract opportunity. This remote position requires a highly skilled and experienced QA professional with a strong background in test automation, HL7 message validation, API testing, and data validation. Key Responsibilities Develop, automate, and maintain tests for HL7 integration (e.g., DFT
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Posted 4 days ago

Senior Business Analyst ( API OR CRM)

IT Associates, Inc.

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Chicago, Illinois, USA

Third Party, Contract

Sr. Business Analyst ( API / CRM) 6-12+ Month ContractLocation - Rosemont, IL (must be able to be onsite 2-4 times a month)Experience with (API or CRM) based projectsProficiency in SQL-Proficiency in data analysis, with a solid understanding of relational databases, data management, and solid SQL skills.No. of Openings - 2Our client is looking to add a Sr Business Analyst drives change by collaborating with business stakeholders and technology teams to deliver impactful solutions. The role invol
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Posted 60+ days ago | Updated 11 days ago

Lead Software Engineer - Backend & APIs

ADDSOURCE

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Remote or US

Third Party

Title: Lead Software Engineer - Backend & APIs Position Type: Contract Location: Remote across USA/ Canada Location: Canada (Ideal) but also open for USA candidates too. Highlights/Mandatory: An expert in designing and scaling distributed, event-driven backend architectures using TypeScript, NestJS, and PostgreSQL. Extensive experience designing and optimizing PostgreSQL schemas and queries. Mastery of ORM tools (TypeORM, Prisma) and event-driven programming (Kafka, RabbitMQ, or similar). Stro
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Posted 25 days ago | Updated 3 hours ago

Remote Cybersecurity Engineer (API/Web App Security)

Software Guidance & Assistance

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Remote or Jacksonville, Florida, USA

Contract

Software Guidance & Assistance, Inc., (SGA), is searching for a Remote Cybersecurity Engineer (API/Web App Security) for a CONTRACT assignment with one of our premier Healthcare Services clients for a Remote position. Top Skills Needed: Azure/Entra ID Scripting (Powershell or Python) API Security frameworks OWASP top 10 Responsibilities: We are seeking an experienced Cyber Security Engineer to join our team, responsible for ensuring the security of our applications and APIs. This role w
Posted 24 days ago | Updated 11 hours ago