Senior Software Engineer

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

Join Us as a Senior Software Engineer!

Are you passionate about building secure, scalable, and high-quality solutions? Do you enjoy working on modern cloud platforms and enabling developers with efficiency tools? This is your opportunity to make an impact at a global financial leader.

Sounds like your kind of challenge?

#LI- Hybrid – 6 days a 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 – 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

Daily tasks

• Design, develop, and maintain cloud-based applications using Java and related technologies.
• Champion excellent coding practices, security principles, and maintainability across projects.
• Implement comprehensive automated testing strategies (unit, integration, regression).
• Collaborate across teams and approach technical challenges with an open, solution-oriented mindset.
• Drive initiatives to enhance developer experience and efficiency.
• Mentor and provide technical guidance to less experienced engineers.

Requirements

Essentials:

Strong communication skills in English.

Solid software engineering fundamentals with a polyglot mindset.

Hands-on experience designing, building, and operating cloud workloads.

Familiarity with modern concurrency models and reactive programming.

Strong testing strategy and application of appropriate techniques.

High attention to detail and commitment to quality and security.

Java and Spring/Spring Boot 

Desirable Skills:

Exposure to security engineering and API security at scale.

Performance testing experience.

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: Communication skills, Java, Spring, Spring Boot

Nice to have: security engineering, API security, performance testing