- System One (Springfield, IL)
- …**Job Number:** JO-2511-2773 **Primary Function** We are seeking a skilled App Developer to design, build, and maintain high-quality mobile applications. The ... Application (App) Developer **Employment Type:** Contract/Temp **Date Posted:** 11/21/2025 **Location:**...as RxJava, Google Analytics, and Retrofit + Experience in Java , Android UX, and the Mobile framework… more
- Cognizant (Springfield, IL)
- …reusable datasets. **Nice to Have:** + Experience with automated test frameworks for mobile and web apps (Appium, Selenium, Playwright). + API test automation ... using Postman, RestAssured, Karate. + Proficiency in Java , TypeScript, JavaScript, or Kotlin. + Performance testing of databases using JMeter or Gatling. + Knowledge… more
- Coinbase (Springfield, IL)
- …production conditions. * *Technology Exploration:* Research and evaluate emerging testing technologies ( web , mobile , AI/ML, backend) and integrate them into our ... in software engineering, with experience in languages such as Python, Java , JavaScript, Go, or similar. * *Infrastructure Knowledge:* Familiarity with infrastructure… more
- Capital One (Springfield, IL)
- … Experience Tooling and workflows that powers cross-platform user experiences across mobile and web . This high-leverage role involves crafting the full-stack ... 10+ years of professional experience coding in commonly used languages like Java , Python, Go, JavaScript/TypeScript, Swift, Kotlin. + 10+ years of professional… more
- Coinbase (Springfield, IL)
- …on building cutting-edge crypto technologies, scalable infrastructure and UI surfaces across web , mobile and browser extensions in a fast-paced industry with ... turn our vision into a tangible deliverables every quarter * Improving developer efficiency, engineering excellence, and operational excellence * Provide support to… more