Senior Java Developer
Antal Sp. z o.o. · Kraków, Małopolskie, Polska ·
- Seniority
- Senior
- Employment
- Contract
- Category
- Software engineering
Antal Sp. z o.o. · Kraków, Małopolskie, Polska ·
Location: Kraków (2 times per week from the office)
B2B | 220–240 PLN netto/hour
We are looking for a skilled and motivated Senior Java Developer to join the AI‑Enabled Delivery Programme within the Global Collateral & Facility Management area.
In this role, you will develop and integrate production‑grade Java microservices, contribute to solution design, and work across multiple workstreams. You will collaborate closely with Tech Leads, architects, QA, platform teams, and engineering partners to deliver secure, well‑tested, and reliable services.
Build, test, release, and support Java microservices
Contribute to solution design aligned with architecture and non‑functional requirements
Identify and resolve technical risks, dependencies, and delivery blockers
Follow engineering standards (coding, branching, CI/CD quality gates, test strategy)
Deliver unit, integration, and contract tests with measurable coverage
Participate in design, code, and security reviews
Use AI‑assisted tooling (e.g., Copilot) responsibly to accelerate delivery
Apply guardrails for AI‑generated code (reviews, secure coding, traceability)
Use GenAI techniques where appropriate (LLMs, prompt engineering, validation)
Contribute to GenAI‑enabled patterns (LLMs, RAG, agent workflows)
Embed security‑by‑design and vulnerability management
Build production‑ready services with observability and performance readiness
Support release activities, integration, and environment preparation
Collaborate with Tech Leads, QA, SRE, architects, and platform teams
Strong hands‑on experience building Java microservices (Spring Boot)
Solid experience with RDBMS (Oracle/PostgreSQL)
Strong unit and integration testing practices (JUnit, Mockito, Testcontainers)
Experience with CI/CD pipelines and quality gates (Jenkins/GitLab, Sonar, SAST/DAST)
Good understanding of integration patterns (REST, messaging/eventing)
Experience contributing to technical design and making pragmatic trade‑offs
Hands‑on experience with GCP
Practical exposure to GenAI concepts and engineering tooling
Familiarity with RAG/agent patterns and governance
Experience delivering regulated financial services platforms
Exposure to cloud‑native patterns (containers, Kubernetes, service mesh)
Experience with performance engineering and resilience testing
Experience implementing AI‑enabled SDLC practices
Hands‑on experience with GenAI integrations (RAG pipelines, evaluation, prompt/versioning)
Opportunity to work on strategic, high‑impact engineering initiatives
Exposure to modern AI‑enabled SDLC practices
Flexible working model
Supportive, international engineering environment
Benefits package: Multisport Card, Luxmed