API Developer @ Mindbox Sp. z o.o.

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

We’re seeking an API Developer with strong Java expertise to work within a cross-functional engineering team, responsible for delivering secure, high-performing services at scale. You’ll be working with modern Java, Spring Boot, and cloud-native patterns including API-first design and event-driven architecture on AWS.

Sounds like your kind of challenge?

#LI- Hybrid – 8 days per month from the office in Kraków

What you get in return

• Flexible cooperation model – choose the form that suits you best
  (B2B, employment contract, etc.)
• Hybrid work setup – 8 days per month from the office in Kraków
• 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

• Proven back-end development experience in Java
• Strong hands-on expertise with Spring Boot and build tools (e.g., Maven)
• Solid knowledge of API architecture and integration patterns (REST, GraphQL, SOAP)
• Experience with common API tools like Postman, Swagger/OpenAPI, SoapUI
• Familiar with data formats (JSON, XML) and backend fundamentals (caching, resilience, service design)
• Ability to diagnose issues, optimize performance, and deliver reliable solutions
• Great collaboration skills and clear technical communication

Nice to Have

• Experience with event-driven architecture and Kafka at scale
• Familiarity with AWS cloud services (Kubernetes/EKS, Fargate, Redis, RDS, S3, Route 53)
• Understanding of modern CI/CD pipelines, security practices, and observability tools
• Strong analytical mindset with a pragmatic, delivery-focused approach

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 seeking an API Developer with strong Java expertise to work within a cross-functional engineering team, responsible for delivering secure, high-performing services at scale. You’ll be working with modern Java, Spring Boot, and cloud-native patterns including API-first design and event-driven architecture on AWS.

Sounds like your kind of challenge?

#LI- Hybrid – 8 days per month from the office in Kraków

What you get in return

• Flexible cooperation model – choose the form that suits you best
  (B2B, employment contract, etc.)
• Hybrid work setup – 8 days per month from the office in Kraków
• 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

,[Design, build, and maintain scalable APIs and backend services using Java, Spring Boot, Maven, Collaborate closely with product owners, architects, and testers to deliver high-quality, business-aligned solutions, Design APIs following industry standards (REST, plus GraphQL/SOAP where applicable) ensuring versioning, backward compatibility, and resilience, Integrate internal and third-party APIs with robust error handling and observability, Build event-driven services with Kafka or similar: manage topics, schema evolution, and message reliability, Deploy on AWS using EKS/Kubernetes, Fargate, Redis, RDS, S3, Route 53, Maintain quality through automated testing, performance tuning, and production support in line with the “you build it, you run it” principle, Produce API documentation using OpenAPI/Swagger and update runbooks as needed, Contribute to security-by-design practices and continuous improvement] Requirements: Java, Spring Boot, Maven, API, REST API, GraphQL, SOAP, Postman, Swagger, OpenAPI, SoapUI, JSON, XML, Service design, Kafka, AWS Cloud, Kubernetes, Amazon EKS, AWS Fargate, Redis, Amazon RDS, AWS S3, Route, CD pipelines, Security