Senior Full Stack Tech Lead – Java/Spring & React

Project overview

Unleash Innovation & Lead the Future of Financial Technology

Krakow-based opportunity with hybrid work model (up to 3 days remote per week).

As a Senior Full Stack Tech Lead – Java/Spring & React, you will be working for our client, a leading player in the banking and financial services industry. You will contribute to the development of resilient enterprise applications within Group Functions Technology, focusing on Risk & Compliance, Model Risk Management, and Operational Risk Management. Join a forward-thinking team and drive impactful solutions that elevate organizational resilience and compliance standards.

Responsibilities

You're ideal for this role if you have:

It is a strong plus if you have: (optional)

Language Required for the role:

Eligibility to work in this role:

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Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

• Lead and mentor a technical team, providing expert guidance and ensuring successful delivery of complex projects.
• Design, build, and support backend microservices and APIs using Java, Spring Boot, Data, REST, and Security best practices.
• Create comprehensive solution architecture diagrams and documentation (e.g., UML).
• Deliver end-to-end features including React + TypeScript UI components when needed.
• Implement microservice architectures with clear API contracts and event-driven integration patterns.
• Develop workflow-driven capabilities using BPMN, integrating workflow components into services.
• Engineer for production readiness, incorporating logging, error handling, resilience, and observability.
• Build and maintain batch processing workloads where applicable.
• Drive software quality through automated testing, code scanning, and remediation activities.
• Containerize applications using Docker and deploy via Kubernetes, supporting cloud environments.
• Collaborate within Agile Scrum teams using JIRA, Confluence, and Wiki, ensuring continuous delivery.
• Provide day-to-day technical guidance to team members, fostering a culture of excellence and innovation.
• At least 8 years of enterprise application development experience, with strong backend engineering expertise.
• Proven leadership experience of 2+ years managing delivery, mentoring, and technical ownership.
• Hands-on experience with microservices and micro-database architecture.
• Strong knowledge of event-driven systems design.
• Expertise in Java and Spring Framework (Boot, Data, REST, Security).
• Front-end experience with ReactJS and TypeScript.
• Experience drafting API specifications using Swagger/OpenAPI.
• Strong automated testing skills (JUnit, mocking frameworks, H2, HttpUnit or similar).
• Experience supporting batch processing programs.
• Expertise in logging, error handling, and production system resilience.
• Hands-on experience with Docker, Kubernetes, and cloud services development.
• Familiarity with code scanning tools and security/quality standards.
• Comfortable working within Agile/Scrum environments using JIRA and Confluence.
• Knowledge of Risk & Compliance domains, especially Model Risk Management.
• Experience with Spring Integration and/or Spring Batch.
• WebSockets, SSE, or binary protocol expertise.
• Workflow engines/libraries: BPMN, Flowable, Activiti, Drools.
• Micro-frontends development experience.
• Communicative English (good command required).
• Only candidates with an existing legal right to work in Europe will be considered for this role.

Project details

• Start: flexible
• Remote: hybrid
• Location: Krakow, PL
• Rate: 30-330 EUR/h