Software Security Backend Engineer (Java) @ Mindbox Sp. z o.o.
Summary
Build and secure scalable backend services in Java 21/Spring Boot for a Zero Trust platform, deploying on Google Cloud and Kafka, while mentoring engineers and driving security best practices.
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
- 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.
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