More jobs:
Sr Software Engineer
Job in
Town of Texas, Marathon County, Wisconsin, USA
Listed on 2026-10-14
Listing for:
Springbokit
Full Time
position Listed on 2026-10-14
Job specializations:
-
Software Development
Backend Developer
Job Description & How to Apply Below
We’re looking for two highly skilled backend engineers to help lead a full backend refresh and rewrite effort. The team recently completed a major front-end migration to Svelte and is now focused on modernizing the backend for scale, reliability, and long-term maintainability.
What You’ll Do
- Lead backend development using Java and Spring Boot to refactor and rebuild existing services and modules.
- Design, build, and maintain responsive single-page applications (SPAs) using React or Svelte, delivering fast, intuitive user experiences across desktop and mobile.
- Architect reusable, well-structured component libraries that keep the UI consistent and speed up feature development.
- Work hands-down on performance optimization — threading, async processing, scaling servers, and improving overall architecture.
- Build and maintain automated unit, integration, and end-to-end testing frameworks.
- Collaborate closely on site reliability, uptime, and debugging critical issues such as memory leaks and performance bottlenecks.
- Help shape technical direction for the final iteration of the product as the company moves toward a potential exit.
- Contribute to decisions on refactoring strategy, infrastructure improvements, and architectural planning.
What We’re Looking For
- Deep experience with Java performance tuning, Spring Boot async tasks, and distributed server infrastructure.
- 3+ years of professional front-end development experience building production SPAs.
- Strong proficiency in React (hooks, context, component lifecycle) or Svelte/Svelte Kit (reactivity, stores, component composition), with willingness to work across both.
- Strong background in automated testing (unit/integration/e2e).
- Experience improving system reliability, uptime, and debugging complex production issues.
- Hands-on experience refactoring or rewriting large, complex backends.
- Ability to execute independently while communicating clearly and contributing to architectural decisions.
- Bonus: experience with large-scale codebase modernization, module-based refactoring, or migrations from Hibernate to jOOQ.
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