Software Security Backend Engineer (Java)

O projekcie: At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.  We’re looking for a highly skilled backend engineer with both strong hands-on coding expertise and deep security knowledge to shape next-generation security solutions. You will design and build secure, scalable services using modern Java, Spring Boot, and cloud-native technologies, contributing to a Zero Trust platform for one of the world’s leading financial institutions. This is more than just coding — you’ll drive industry best practices, mentor other engineers, and influence technology direction across a broad engineering community.  Sounds like your kind of challenge?  What you get in return - Flexible cooperation model – choose the form that suits you best (B2B, employment contract, etc.) - Hybrid work setup – remote days available depending on the client’s arrangements  - Collaborative team culture – work alongside experienced professionals eager to share knowledge  - Continuous development – access to training platforms and growth opportunities  - Comprehensive benefits – including Interpolska Health Care, Multisport card, Warta Insurance, and more  - High quality equipment – laptop and essential software provided Wymagania: - Expert knowledge of Java 21+ (including JVM internals, memory management, Project Loom) and modern Spring ecosystem - Solid experience with secure coding practices and building authentication/authorization flows using OAuth2/OpenID Connect - Proven experience with Google Cloud Platform components (particularly GKE, Cloud Spanner, Cloud SQL) - Strong practical experience in event-driven architecture with Kafka or Pub/Sub - Demonstrated ability to think strategically about risk, security, and future technology adoption - Influential leadership skills: capable of transferring expertise and guiding teams across the organization - Hands-on problem-solving mindset, adaptable across multiple domains (not just a network or back-end specialist, but a generalist who thrives on complex challenges) - Demonstrated thought leadership via technical blogs, open-source contributions, or community engagement is a plus Joining this project you’ll become part of Mindbox – a tech-driven company where consulting, engineering, and talent meet to build meaningful digital solutions. We’ll back you up every step of the way, accelerate your development, and ensure your skills make a difference. Codzienne zadania: - Design, build, and deploy secure backend services leveraging Java 21 (Virtual Threads/Project Loom) and Spring Boot 3.x - Implement Zero Trust architecture principles and OAuth2/OpenID Connect at the code level - Build solutions optimized for Google Kubernetes Engine (GKE) and databases such as Cloud Spanner or Cloud SQL (Postgres) - Develop event-driven architectures using Pub/Sub or Kafka - Automate from the outset: reduce manual toil and accelerate secure delivery pipelines - Apply best practices for software security across SDLC - Research new technologies, guide adoption, and set the technical direction for the platform - Mentor engineers and foster a culture of technical excellence and knowledge sharing - Actively contribute to engineering communities and “raise the bar” in delivering secure, high-quality solutions - Stay ahead of industry trends and communicate changes effectively to influence adoption