We’re looking for an experienced Senior Java Developer, in Warsaw, Krakow OR Wroclaw, to take a hands-on role in the development of large-scale, distributed web applications. This position offers the opportunity to work within a modern engineering environment, guiding a team through all phases of the development lifecycle - from architecture and implementation to delivery and optimisation.

Key Responsibilities:

• Lead the design and development of backend systems built on modern Java frameworks.
• Support a small engineering team, translating requirements into deliverable components and maintaining high technical standards.
• Contribute to the design of scalable, distributed architectures and microservices-based solutions.
• Oversee code quality through refactoring, performance optimisation, and robust testing practices.
• Manage CI/CD workflows and build automation processes using common Java build and deployment tools.
• Ensure effective API design and integration practices across services.
• Collaborate within an agile framework, contributing to sprint planning and continuous improvement.

Skills and experience:

• At least 5+ years of experience developing web applications with modern Java and related frameworks.
• Proven experience leading or mentoring other engineers in an agile team environment.
• Strong understanding of distributed systems, cloud-based deployment, and containerisation (Docker/Kubernetes).
• Hands-on experience with CI/CD, build automation, and version control best practices.
• Proficiency in database design (SQL and NoSQL) and data consistency principles.
• Familiarity with asynchronous and reactive programming.
• Experience with messaging systems (e.g., Kafka, MQ) and API-first development approaches.
• Knowledge of modern engineering tools and AI-assisted development platforms is advantageous.

This role offers the chance to contribute to complex, high-impact engineering projects while shaping technical direction and mentoring a skilled development team.