Senior Java/Kotlin Engineer (Freelancer)
Posted Updated
Summary
Freelance senior engineer to help build a stable, scalable Kotlin/Spring Boot back-end from the ground up, integrating with CI tooling and bringing an architectural perspective. Requires 3+ years in the Java ecosystem, Kubernetes, cloud (preferably AWS), and SQL/NoSQL databases; ~3-month full-time contract with one on-site day per week in Budapest.
- Supporting the development of a stable and scalable Kotlin and Spring Boot back-end from the ground up
- Crafting code that adheres to the highest industry standards while ensuring seamless integration with our Cl tools
- Collaborating effectively within a dynamic team environment on exciting, cutting-edge tech initiatives while working closely with fellow engineers and supporting Tech Leads and Architects
- Bringing an architectural perspective to the planning process
- 3+ years of experience in Java ecosystem
- Familiarity with Java 17, 21
- Deep understanding of Spring Boot
- Experience with an observability platform (Grafana / LGTM or ELK stack or NewRelic)
- Proven ability to troubleshoot under pressure, quickly identify root causes, recommend impactful solutions, and ensure thorough follow-through
- Hands-on experience with SQL or NoSQL databases (Postgres, Redis)
- Experience with Kubernetes
- Familiarity with at least one public cloud provider (preferably AWS)
- A strong OOP mindset and a commitment to upholding SOLID principles
- A passion for writing clean, maintainable code, adhering to best practices
- At least an intermediate level of English language skills
- Familiarity with IaC, such as Terraform, Helm
- Kotlin experience
- Full-time (40 hours/week) contract for approximately 3 months
- On-site presence required once a week at Budapest office
- High-quality engineering environment focused on clean code and modern technologies
- Strong team and friendly atmosphere