Senior Software Engineer

• Strong software engineering fundamentals with a polyglot mindset • Hands-on development experience with Java (Spring/Spring Boot preferred) • Knowledge of functional, asynchronous, and non-blocking programming models • Familiarity with modern concurrency models and reactive programming approaches • Experience with CI/CD pipelines , version control, and best coding practices • Sound understanding of secure engineering practices • Excellent communication skills with business-level English • Experience in cloud environments (AWS/Azure/GCP) and working with distributed systems • Exposure to security-focused tools and experience securing high-volume APIs • Familiarity with API security concepts : authentication, authorization, and threat mitigation • Strong background in test architecture , including end-to-end and performance testing • Understanding of performance optimization , profiling, and automated testing frameworks 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 building enterprise-grade platforms and security services that define technology standards across HSBC. As a Senior Software Engineer , you will be working in a hands-on development role , designing and delivering secure, cloud-native applications and libraries that drive cross-cutting capabilities. Your contributions will set engineering benchmarks within the bank, ensuring excellence in development, security, and scalability.   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 - 6 days a 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  Java, Spring Boot, CD pipelines, Communication skills, Cloud, AWS, Azure, GCP, API, Security, Testing, Automated testing