43 api test engineer jobs at 39 companies in McHenry, IL
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Software Engineer, API
Chicago, Illinois, United States
$108k-$110k/yrHybridFull Time
Supernova Technology: Provides cloud-based digital software for securities-based lending.
3+ YOEBachelor's in CS/Engineering, 3+ years software development with API design, experience with Java, Spring Boot, AWS, OAuth/JWT, REST, Git, CI/CD, and testing frameworks.
RESTful Services, OAuth, JWT, Java, Spring Boot, AWS, Git, CI/CD
The Aspen Group: Provides comprehensive business support for retail healthcare practices.
5+ YOEDesign, develop, and maintain automated tests; API/SQL testing; CI/CD; strong programming in Java/Python; experience with API testing and SQL Server.
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
7+ YOE7+ years in software testing or quality engineering with experience in web/mobile/API testing, test automation, CI/CD, leadership, and Agile/DevOps practices; bachelor’s degree in CS/Engineering/IT or equivalent.
ITility: Providing professional engineering, IT, and mission support to government agencies.
8+ YOEUS citizen able to pass IT-II background; 8+ years software testing,5+ years Java+Selenium automation; experience with API, performance and CI/CD testing; familiarity with Jenkins,AWS,JMeter,POSTMAN; strong communication and Agile experience.
CboeBATS: CBOE: Operates global market infrastructure and provides tradable financial products.
2+ YOEBachelor's degree or equivalent; 2+ years QA experience with automation; experience with Cucumber, Selenium/Playwright, Java, Python, API testing, Docker/Kubernetes, SQL and CI tools.
Senior Software Development Engineer in Test (SDET) (Remote)
Chicago, Illinois, United States
$120k/yrRemoteFull Time
HyattNYSE: H: Global hospitality providing luxury hotel and resort accommodations.
5+ YOEBachelor's in CS or equivalent, 5+ years in software or test automation, strong programming in Java/Kotlin/Python/TypeScript, experience with test automation for services/APIs in AWS, and CI/CD integration.
Braven: Provides career mentorship and skills training to college students.
3+ YOE3+ years QA or 2+ years software engineering with 1+ year test automation; experience with Playwright/Cypress, API and database testing, Git/GitHub and CI, accessibility (WCAG); authorized to work in the U.S.
Frontline EducationNYSE: ROP: Provides administrative and management software for K-12 school districts.
7+ YOE2+ Mgmt7+ years QA experience with hands-on test automation, 2+ years leading QA, experience with web apps, API and performance testing, strong SQL, and demonstrated use of AI to improve QA.
JLLNYSE: JLL: Global commercial real estate and investment management services.
Strong Python and engineering skills, REST API experience, familiarity with document parsing libraries and Microsoft 365 integrations, Git workflows, hands-on LLM/AI engineering, and experience designing validation and testing frameworks. Must be authorized to work in the U.S.; no visa sponsorship.
Python, pytest, PyMuPDF, python-docx, openpyxl, pandas, Git, REST API, Microsoft 365, Microsoft Graph, Microsoft SharePoint, Microsoft OneDrive, LLM APIs, Model Context Protocol (MCP)
Federal Home Loan Bank of Chicago: Provides liquidity and funding to member financial institutions.
10+ YOE5+ Mgmt10+ years in quality engineering with automation-first test framework design, CI/CD integration, API/web/database testing, performance testing, and 5+ years mentoring or supervisory experience.
5+ YOE5+ years with Microsoft stack (.NET 6/7/8+, ASP.NET Core, Web API, EF Core), SQL Server, Azure services, CI/CD and Git; bachelor\u0002s degree or equivalent experience; strong API, security, testing, and mentoring skills.
.NET, .NET 6, .NET 7, .NET 8, ASP.NET Core, Web API, Entity Framework Core, ASP.NET MVC, Angular, React, TypeScript, JavaScript, SQL Server, Microsoft Azure, App Service, Functions, Azure SQL, Application Insights, CI/CD, Git, Azure DevOps, GitHub Actions
Columbus or Boston or Chicago or Austin or Los Angeles or United States or Canada or United Kingdom or Australia
$125k-$165k/yrHybridFull Time
Loop Returns: Software platform automating e-commerce returns and post-purchase experiences.
2+ YOE2+ years building web applications, backend services, or APIs. Experience using AI agents in engineering workflows, testing and CI/CD, and familiarity with PHP/Laravel, Vue.js, AWS Serverless, MySQL, or DynamoDB is a plus.
Grand Rapids or Denver or Chicago or Massachusetts or New Hampshire or New York or North Carolina or Oregon or Texas or Utah or Vermont or Virginia or United States or Canada
$120k-$160k/yrRemoteFull Time
Campspot: Software for booking and managing campgrounds and RV parks.
3+ YOE3+ years professional software development; experience with Claude Code and Anthropic API; strong TypeScript and React; knowledge of prompt engineering, REST APIs, async patterns; ability to review AI-generated code and write tests.
Claude Code, Anthropic API, TypeScript, React, REST APIs
Vivid SeatsNASDAQ: SEAT: Online marketplace for buying and selling event tickets
4+ YOE4+ years professional software engineering experience, strong Java (Spring Boot preferred), REST API and event-driven service experience, familiarity with relational databases/MyBatis, CI/CD and automated testing, and strong communication skills.
Revantage: Provides corporate services for real estate investment companies.
7+ YOE7+ years software engineering experience, bachelor's in CS or related, leadership skills, experience with Python or .NET, cloud (Azure or AWS), serverless and event-driven architectures, REST APIs, EM/monitoring, and testing practices.
R1 RCM: Provides revenue cycle management and automation for healthcare providers.
3+ YOE3+ years building cloud-native solutions on Azure using .NET, C#, ASP.NET Core and Web API; proficiency with Microsoft SQL Server, front-end frameworks (Angular/React), source control, unit testing, and Agile practices. BE/B.Tech/MCA or equivalent required.
Pleasant Prairie or Milwaukee or Waukegan or Glenview or Kenosha
OnsiteFull Time
Uline: Distributes shipping, industrial, and packaging materials across North America.
4+ YOEBachelor's in IT/CS,4+ years QA automation scripting with 2+ years Playwright,proficiency with JavaScript/Typescript,SQL,API testing,GIT,Aazure DevOps,critical thinking and communication skills.