[Hiring] Senior Java Developer @ITRex Group

Role Description

We are looking for a senior Java engineer to join a team in the middle of a serious AI transformation, building a Spring Boot microservices backend on Kubernetes and bringing AI into the whole development process.

• Design, build and own Spring Boot microservices and the Web APIs around them, from the data model through to what runs in Kubernetes.
• Take end-to-end responsibility for the features you ship: schema, service, API contract, tests, pipeline and the behaviour in production.
• Use AI assistance deliberately across the development cycle - design exploration, implementation, refactoring, tests, review - and stay accountable for everything that gets merged.
• Help establish the team's AI-assisted engineering practice: what works, what to avoid, where a human review gate belongs, and how new joiners get up to speed with it.
• Pair with other engineers on hard problems and share context instead of hoarding it.
• Contribute to architectural decisions on service boundaries, communication patterns and data ownership, and argue your position clearly when you disagree.
• Keep the build pipeline healthy: GitLab and Jenkins stages, test suites, container builds and Terraform-managed infrastructure.
• Review other people's code with the same care you want applied to your own.
• Work directly with product, QA and DevOps to turn ambiguous requirements into something shippable, rather than waiting for a fully specified ticket.
• As a lead, set technical direction on your part of the system and mentor the engineers around you.

Qualifications

• Core Java: Java 11 and Java 17, the concurrency model, collections, memory behaviour and the language features that actually changed how modern services are written.
• Solid, production-grade experience with the Spring Framework and Spring Boot: dependency injection, configuration, Spring Data, Spring Security, REST controllers and the testing support.
• Web API development: designing, versioning, documenting and evolving HTTP APIs that other teams depend on.
• Microservice architecture: service decomposition, inter-service communication, resilience patterns, data ownership, and an honest sense of when a microservice is the wrong answer.
• SQL and relational data modelling with PostgreSQL and MySQL - schema design, indexing, query tuning and migrations.
• Automated testing as a habit: JUnit, Mockito, integration tests and the judgement to know what deserves coverage.
• Maven for build and dependency management.
• Docker, and Kubernetes at the level of someone who deploys onto it and debugs on it - how workloads, services, config, secrets and resource limits fit together.
• Terraform and infrastructure as code.
• CI/CD with GitLab and Jenkins: pipelines you can read, extend and fix.
• Practical experience with AI-assisted software development, and genuine interest in driving that practice forward inside the team.
• Willingness to work in pair programming.
• Strong communication skills and a track record in cross-functional teams; you enjoy solving problems together rather than working through tickets alone.
• English at B2 level or above.

Requirements

• Observability in practice: Grafana dashboards, Kibana and the ELK stack, Sentry for error tracking.
• Structured logging and alerting design - deciding what a service should say about itself and when someone should be woken up.
• Performance testing and profiling of JVM services under load.
• Experience introducing AI-assisted workflows to a team: prompt and context practices, review discipline, guardrails for generated code.
• Prior work in a lead or tech-lead capacity on a distributed backend.

Benefits

• Remote flexibility: Work where and how you work best - we trust you to deliver.
• Fair compensation: Competitive salary + benefits that matter (medical, wellness, learning).
• Ownership opportunities: See a problem worth solving? Own it. We back smart risks over bureaucratic safety.
• AI enhancement: We leverage AI to make you faster and stronger - complementing your abilities, not replacing them.
• Learning investment: English classes, professional development, well-being support.
• Career progression: Real paths up, not just sideways shuffling.
• Responsive teammates: No ignored Slacks, no "not my problem" attitudes.
• Supportive culture: When you're stuck, people help. When things break, we fix them together.
• Human connections: Regular meetups, tech talks, and actual relationships beyond work.