Backend Engineer (Java)

Technologies we use

Expected

• Java
• Spring Boot
• Kubernetes
• Docker
• Micronaut
• AWS
• Kafka

Operating system

• Windows

About the project

We’re looking for a Backend Engineer passionate about building innovative solutions using cutting-edge technologies.

We are on a mission to become the leading Banking-as-a-Service (BaaS) provider in the UK. Our solutions are powered by innovative technology and backed by strong financial stability. We’re building a team of visionaries who want to transform the financial industry landscape.

Sounds like your kind of challenge?

This is how we organize our work

This is how we work

• agile
• scrum

Your responsibilities

• Work as part of a core cross-functional team to develop next-generation core banking technology.
• Deliver and enhance an innovative banking platform product.
• Support and mentor junior engineers, acting as a subject matter expert.
• Write clean, reusable, and well-tested code that’s easy to maintain and extend.
• Collaborate with stakeholders to shape the direction of platform engineering and ensure customer needs remain central to key decisions.
• Uphold standards, follow best practices, and promote innovation across the backend chapter.
• Resolve complex technical issues through team collaboration and knowledge sharing.
• Note: Full project details will be provided during the recruitment process.

Our requirements

• Strong practical and theoretical knowledge of Java software development.
• Proven experience with Spring Boot or Micronaut.
• Understanding of Kubernetes and Docker.
• Excellent knowledge of AWS (deployment and configuration).Experience with message-driven architectures (Kafka, event sourcing).
• Success delivering in an agile environment.
• Experience working in a highly secure application environment.
• Ability to act as a subject matter expert and communicate clearly with both technical and non-technical audiences.
• Understanding how to translate business objectives into data-driven insights.

What we offer

• Flexible cooperation model – choose the form that suits you best (B2B, employment contract, etc.)
• Hybrid work setup – 2 days per month required on-site in Warsaw
• 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

This is how we work on a project

• Continuous Deployment
• Continuous Integration

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of professional training & courses
• life insurance

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.

Mindbox Sp. z o.o.

At Mindbox, we connect top IT talents with technology projects for leading enterprises across Europe.

Our focus is on matching your skills with work that matters – projects that use modern tech stacks, solve real business challenges, and give you space to grow. By joining us, you’ll deliver technology solutions for well-known brands, supported by the Mindbox team that values knowledge-sharing and continuous development. We make sure you have the tools, flexibility, and guidance to do your best work – and to keep moving forward in your career.