Java Engineer

O projekcie:
You will independently design, develop and deliver reliable backend services within a self-organized, cross-functional, distributed team. This includes building robust APIs and event-driven integrations for our internal tools, with a strong focus on internal user needs. You will also help drive backend architecture decisions and contribute to technical quality across teams through code reviews and close collaboration.

Our backend stack:

- Java with Spring Boot- AWS- Kafka- Kubernetes- Terraform for IaC- GraphQL- PostgreSQL- GitLab CI

Wymagania:
- You have 3 to 5 years of experience building backend applications, from which a couple of years building backend applications in Java or another JVM language such as Kotlin
- You have worked in cloud environments (ideally AWS)
- You have practical experience with at least one of the following:

- Building and running on AWS
- Designing, building and maintaining event-driven systems with Kafka
- Deploying and operating workloads on Kubernetes
- Managing infrastructure as code, ideally with Terraform

- You write automated tests as a natural part of your development process and care about code quality and maintainability
- Understanding of event-driven systems and how to work with them
- Solid written and spoken English skills
- Experience working in an Agile setup
- Curiosity about the business domain. Interest in transportation, logistics or similarly complex domains is a good signal, as is the ability to explain such a domain clearly

Nice to have

- Experience building services with Spring Boot
- Experience working with databases, relational and/or NoSQL
- Experience with CI/CD pipelines (GitLab CI or GitHub Actions)
- A DevOps mindset: you are willing to own pipelines, infrastructure and quality, not just the application code
- Experience with agentic or AI-assisted coding

Codzienne zadania:
- Design, build and maintain backend services and APIs that automate and simplify FlixTrain Network Planning workflows 
- Develop and evolve data models and integrations, including asynchronous, event-driven communication between services 
- Work with internal users, product and other engineers to understand their needs and turn them into practical technical solutions 
- Write and maintain automated tests to ensure the reliability and maintainability of the services you deliver 
- Collaborate with other engineers across a distributed architecture within an Agile environment 
- Document technical decisions, solutions and ways of working