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Software Engineer II - Java/Kotlin

Poland, Łódź · Job Posted March 03, 2026
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Job Description

Join our Payments Engineering team and continue to build your expertise! We're looking for a collaborative Software Engineer to help build and improve a world-class payment platform that impacts millions of users. This is your opportunity to take ownership of your work, support your team, and grow your skills in a supportive environment.

Job Responsibility

  • Team Collaboration: Proactively collaborate with your team, communicating progress and helping to remove obstacles
  • Give and graciously receive direct, useful feedback to improve both your work and the team's processes
  • Mentor junior engineers and help them grow their technical skills while contributing to a supportive team culture that adopts company values
  • Design & Development: With guidance, design small systems or processes, making design choices that consider maintainability and scalability
  • Actively participate in design reviews and improvement efforts, anticipating how your work affects upstream and downstream systems
  • Take ownership of the reliability of your deliverables and ensure quality and efficiency in your own work while supporting others to do the same
  • Quality & Operations: Plan and execute validation for your systems, ensuring repeatable and traceable practices while understanding common failure points
  • Design and implement secure processes, recognize and mitigate potential security risks, and contribute to documentation
  • Identify recurring operational issues, propose improvements, monitor performance within your area, and take part in on-call or support activities

Requirements

  • 4-5 years of professional software development experience
  • Technical ownership: accountability for decisions, active participation in Agile ceremonies, comfortable deploying to production and solving technical issues
  • Domain knowledge: strong grasp of domain, understanding of interactions with other systems, active work to improve documentation and knowledge sharing
  • Collaborative spirit: team player who takes ownership of initiatives, helps guide them to completion, proactively addresses issues, shares learnings with the team
  • Growth mindset: challenge to learn more about business issues, interest in industry trends, focus on continuing to learn and support those around you
  • Quality & security focus: active responsibility for quality and security, understanding of testing coverage, ability to implement secure, reliable systems
  • Familiarity with DevOps practices: Continuous integration / continuous deployment (CI/CD), containerization (Docker, k8s)

Nice to have

Experience with billing or financial systems

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