At Mindbox we connect top IT talents with technology projects for leading enterprises across Europe.
Are you passionate about building next-generation payment processing systems? We are looking for an experienced Senior API Engineer to join our team and help design and deliver innovative, high-performance solutions that enable fast, secure, and cost-effective payment capabilities.
Sounds like your kind of challenge?
What you’ll be doing
- Deliver engineering expertise for Future State Architecture, producing best-in-class payment processing capabilities.
- Develop high-quality code artefacts, ensuring quality gates and robust test scripts.
- Design, code, test, debug, and document programs as required.
- Provide architecture guidance to developers based on best practices and global standards.
- Lead and mentor team members, fostering technical excellence and innovation.
- Partner with DevOps teams to enable automated infrastructure delivery and CI/CD pipelines.
- Resolve architectural and development blockers, ensuring timely delivery.
- Conduct feasibility studies, cost/benefit analyses, and prepare technical specifications.
- Ensure compliance with all relevant controls and standards.
- Stay up-to-date with emerging tools, technologies, and cybersecurity regulations.
Note: Detailed project information will be shared during the recruitment process.
What you get in return
- Flexible cooperation model – choose the form that suits you best
(B2B, employment contract, etc.) - Hybrid work setup – 3 days / week from 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
Who we’re looking for
- Bachelor’s degree in Computer Science, Engineering, or related field.
- 8+ years of applied experience as an API engineer.
- Strong expertise in API design, architectural artefacts, and low-level designs.
- 5+ years of engineering experience in back-end microservices, application security, and middleware.
- Proficiency in Java (Go and Rust are a plus), JVM tuning, and performance optimization.
- Expertise in microservices, Spring Boot, Docker, Kubernetes, service mesh.
- Experience with Kafka, cluster configuration, and data streaming.
- Knowledge of monitoring tools (Splunk, Grafana, Prometheus) and DevOps practices.
- Familiarity with cloud environments, VPC, identity and access management, and Linux-based infrastructure.
- Strong SQL and distributed database knowledge.
- Experience in financial services or payment systems is an advantage.
- Excellent leadership, mentoring, and communication skills.
- Ability to work independently, manage priorities, and thrive in a dynamic environment.
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.
