Requirements:

• Ability to pragmatically solve security issues for maximum effectiveness
• Experience in writing and reviewing code in at least one language: JavaScript (NodeJS), Python, Go, Erlang, Java, or Scala
• Security Expertise (in at least one area): web/mobile app security, network security, OS internals, applied cryptography, or cloud computing
• Effective communication skills
• Fluency in English

Job description

Join our team in Warsaw, where we’re collaborating on a cutting-edge fintech venture with a global industry leader. Together with our Partner – Klarna, we’re building an IT hub designed to drive innovation in digital payment solutions. We’re on the lookout for top-tier engineers who thrive in dynamic, forward-thinking environments. Spyrosoft is leading the recruitment process, facilitating a seamless experience for candidates who are ready to shape the future of online shopping and payments.

This opportunity is ideal for engineers who value independence, proactiveness, and flexibility. Our engagement begins with a B2B contract through Spyrosoft, transitioning to a direct contract with our Partner.

We offer a hybrid work model in Warsaw’s vibrant Wola district. English fluency and eligibility to work in Poland are essential, as is the successful completion of a background check to meet the rigorous standards of the financial domain.

Our process:

• CV selection
• Initial recruitment screening
• Technical interview
• Online logic test
• Cultural fit interview

Main responsibilities

• Conduct threat modeling and architecture/design reviews for secure applications and services.
• Make architectural decisions to enhance security in collaboration with engineering teams.
• Develop and improve security tooling, automation, and processes.
• Perform code reviews and penetration testing on Klarna services.
• Participate in and contribute to the internal engineering security community.

Nice to have

• Security Practices: Experience in penetration testing, code/design review, threat modeling, or security tooling development.
• Community Engagement: Participation in BugBounty programs and Capture the Flag (CTF) competitions.