Senior Java Engineer - hybrid (m/f/n)

Your responsibilities:

Engineering

- Design and implement high-performance microservices in Java / Spring Boot - Build and maintain event-driven integrations using Apache Kafka - Own the data layer: schema design, query optimisation, migrations (PostgreSQL) - Work within a containerised cloud-native environment: Docker, Kubernetes, GCP - Hold the bar on code quality through reviews, testing standards, and CI/CD discipline - Mentor team members and advocate for a culture of quality and continuous improvement

Ownership & Delivery

- Take full ownership of features end-to-end - from requirements to production and beyond - Work directly with business stakeholders to challenge assumptions and align on solutions - You understand your product deeply - the business context, the customer impact, the why behind every feature - Working across a large organisation with many teams is complex. You navigate that complexity, build bridges, and push things over the finish line - Write clear technical documentation: System Design docs, RFCs, and ADRs - Identify and address technical debt proactively - before problems become incidents - Participate actively in architecture discussions with well-reasoned proposals

- 5+ years of commercial Java development (Java 11/17+, Spring Boot, Spring Security, JPA/Hibernate) - Strong experience with distributed systems - microservices, event-driven patterns, inter-service communication - Deep JVM internals: memory model, GC tuning, concurrency, performance profiling - Apache Kafka - producers, consumers, consumer groups, offset management, error handling - PostgreSQL - relational modelling, indexing strategy, query plans, schema migrations - Docker + Kubernetes - day-to-day production usage - Maven/Gradle, Git, JIRA, Confluence, Code Reviews, CI/CD - Proven ability to work with non-technical stakeholders and write design documents others want to read - English B2+ - team and stakeholder communication - Proficiency in leveraging AI tools and large language models (e.g., GitHub Copilot, ChatGPT, Claude) to enhance productivity, accelerate development, and solve complex problems. - Ability to critically evaluate AI-generated outputs and apply them responsibly within professional workflows.

Nice-to-have

- Kotlin development experience - Domain-Driven Design (DDD), CQRS, Event Sourcing - gRPC, GraphQL - GCP: Cloud Functions, Pub/Sub, GKE, Cloud Spanner - MongoDB - Experience with high-throughput, low-latency systems - Background in e-commerce, logistics, or fintech

Why Join InPost?

- Opportunity to work in a diverse, international, and cross-functional environment, along with leading experts. - You work and learn from a senior leader and their leadership team, expanding your experience and exposure in the e-commerce and logistics industries. - InPost is a growing company that offers its people an increasing number of opportunities in several locations in Europe. - Fulfilling careers with a range of benefits and investing in providing training opportunities for people development. - You will feel a part of the InPost community that makes an impact on sustainability, convenient deliveries, and the circular economy every day. - Excellent working environment and flexible hours - We offer B2B type of Contract