Backend Engineer

At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe. Are you passionate about shaping cutting-edge architecture and delivering innovative solutions? We’re looking for a Backend Engineer to join our client’s team and be part of a transformative journey towards next-generation payment capabilities. You will play a critical role in delivering Future State Architecture (FSA) for payment processing, introducing a lean and reusable payment processing engine. This engine will become the core of future payment capabilities, providing high-speed, cost-effective, and high-quality product delivery. Sounds like your kind of challenge? #LI - Hybrid: 2x/week from the office in Kraków What you get in return Flexible cooperation model Hybrid work setup – 2x/week 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 Daily tasks: - Deliver engineering expertise for Future State Architecture and create best-in-class payment processing capabilities. - Produce high-quality code artifacts, ensuring quality gates are met and robust testing is included. - Design and develop highly available and resilient software in a distributed environment. - Partner with DevOps teams to implement automated infrastructure delivery, CI/CD pipelines, and DevSecOps practices. - Provide technical solutions to complex problems, perform feasibility studies, and deliver architecture guidance in alignment with global standards. - Stay current on emerging technologies and compliance requirements, including cybersecurity and data privacy regulations. 8+ years of applied experience as an API engineer with solid understanding of architectural design (gap analysis, data models, etc.). Strong engineering background in back-end microservices development , application security, authentication, caching, and middleware. Advanced programming skills in Java (Go and Rust are a plus). Familiarity with Spring Boot and distributed systems design. Knowledge of Kafka, Docker, Kubernetes , and experience with observability tools (Grafana, Prometheus, Jaeger). Expertise in cloud environments , networking, identity and access management, and DevOps methodologies. Experience working in financial institutions , preferably in payment systems. Strong leadership abilities to mentor and inspire the team, coupled with critical thinking and problem-solving skills. Excellent English communication skills , both written and verbal. Bachelor’s degree in Computer Science, Engineering or related field. 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. Must have: API, Backend, Microservices, Security, Java, Go, Rust, Spring Boot, Kafka, Docker, Kubernetes, Grafana, Prometheus, Cloud, Networking, DevOps, Communication skills, Degree