Senior Backend Engineer (AI-First, Kotlin/Spring Boot)
New
J
JakdojadePublic transport
Workplace type: remoteFull-TimeSenior
Salary15,000 - 21,000 PLN per month
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Job Details
- Experience
- 3-year experience as a Backend Developer on the JVM (Kotlin or Java) with Spring Boot
- Required Skills
- PostgreSQLJavaJVMKotlinSpring BootMicroservices
Requirements
- Have 3 years of experience as a JVM Backend Developer using Kotlin or Java with Spring Boot.
- Know Kotlin through professional work or personal projects.
- Have experience with Clean Code, Software Craftsmanship, TDD, DDD, hexagonal architecture, microservices, and event sourcing.
- Use AI agents for coding at work or in personal projects, and know when not to trust them.
- Write meaningful tests, including integration tests with a real database.
- Know PostgreSQL and HTTP API design.
- Understand user needs and business context.
- Work independently and effectively with incomplete information.
- Prefer turning repetitive work into a rule, test, or automation rather than doing it manually.
- Value collaboration and feedback.
Responsibilities
- Write production-quality code with AI agents, mainly Claude Code; specify work, guide the agent, review its output, and own the production change.
- Develop and maintain backend services in Kotlin and Spring Boot.
- Turn recurring errors into linter rules, tests, and automations.
- Create instructions and prompts for agents, review practices, and recurring automations for the team.
- Evaluate whether improvements work by tracking rollbacks and deployment time, rather than token usage.
- Share knowledge and good practices for working with AI.
- Occasionally make changes to the internal dashboard frontend.
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