Senior Java Architect / Lead Developer

• Location: Kraków, Poland
• Work Model: Hybrid (3 days per week from the Kraków office)

Join an international team and play a key role in building and maintaining high-performance, cloud-native solutions. This position offers the opportunity to work on large-scale, business-critical applications, contributing to both strategic architecture decisions and hands-on development.

Key Responsibilities

• Take over responsibilities and knowledge from the current vendor.
• Design, develop, and implement new application functionalities.
• Maintain, enhance, and optimize existing applications.
• Collaborate with business stakeholders and technology teams to deliver scalable solutions.
• Support the development of real-time, high-throughput data platforms.
• Leverage AI-assisted development tools to improve software delivery and productivity.

Required Skills & Experience

• 12+ years of professional experience in software development with Java.
• Strong hands-on experience with:
• Java
• Spring Boot
• Flowable
• JPA / iBatis
• Kafka
• PostgreSQL
• Cosmos DB
• Redis
• REST APIs
• Azure Cloud
• Docker
• Kubernetes
• Maven
• Gradle
• Proven expertise in microservices and data streaming architectures.
• Strong knowledge of security technologies, including Azure AD and OAuth.
• Experience with AI-assisted software development practices.
• Deep understanding of Computer Science fundamentals and the Software Development Lifecycle (SDLC).
• Excellent communication skills with the ability to translate business requirements into technical solutions and collaborate across global teams.

Nice to Have

• Experience designing and delivering high-performance, high-throughput platforms.
• Expertise in real-time streaming systems and time-series data processing.
• Experience working in large-scale enterprise environments.

What We Offer

• Opportunity to work on innovative, large-scale international projects.
• Influence on architectural and technical decisions.
• Exposure to modern cloud-native technologies and data-driven solutions.
• Collaborative environment with highly skilled engineering teams.
• Long-term engagement with challenging and impactful work.