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Senior Application Security Engineer @

2 weeks ago

Warszawa, Mazovia, Czech Republic Winged IT Full time
  • 6+ years of experience in web/mobile app security, network security, OS internals, applied cryptography, or cloud computing. Expertise in at least one area is expected;
  • 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;
  • Strong educational background in Computer Science, Information Technology, or a related field;
  • Language proficiency: Advanced English (minimum B2 level).

Nice to have:

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

Do you want to play a key role in revolutionizing the future of finance? Join our Client - a global leader in deferred payments, with over 85 million active users and 2.5 million transactions processed daily As a pioneer in modern payment solutions, our Client is developing innovative methods that streamline the shopping experience, enhance transaction security, and expand the availability of purchasing options. 

We're seeking individuals eager to achieve remarkable results and share their bold vision to redefine the future of payments and fintech. Send us your CV - we can't wait to meet you

,[ To conduct threat modeling and architecture/design reviews for secure applications and services;, To make architectural decisions to enhance security in collaboration with engineering teams;, To develop and improve security tooling, automation, and processes;, To perform code reviews and penetration testing on Klarna services;, To participate in and contribute to the internal engineering security community.] Requirements: Python, JavaScript, Go, Erlang, Java, Scala