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nexos.ai careers

Security Engineer | Mid-Senior | Web & Mobile

Warsaw/Gdansk/Krakow/Poznan/Wroclaw, PL

Full Time/remote

Engineering & Product

Join the AI revolution. We’re building an all-in-one AI platform to help teams do their best work and automate every routine task you can think of. We’re looking for problem-solvers to turn powerful AI into an easy, no-code tool for teams everywhere.

Main Responsibilities

  • Secure AI systems, web applications, networking components, and mobile applications. White, grey box or black box penetration testing – you name it!
  • Show your reverse engineering skills on finding bugs in cutting-edge security solutions.
  • Design and create solutions to complex security issues from scratch.
  • Develop scripts, security automation tools to enhance penetration testing processes.
  • Closely collaborate with backend application developers and other tech geeks to validate, assess, understand the root cause and mitigate vulnerabilities.
  • Spread your security knowledge with hundreds of your colleagues!

Core Requirements

  • Proven experience in application security assessment planning, testing, and vulnerability reporting.
  • Proficiency using security scanners, static code analyzers, and debuggers.
  • Networking knowledge, SSL/TLS knowledge, ability to explain what ciphers, PFS, keys, PKI, certificates are and what they do.
  • Demonstrated ability to perform manual security code audit.
  • Previous experience with fuzzing, reverse engineering, and exploit development.
  • Experience working with application developers to validate, assess, understand the root cause and mitigate vulnerabilities.
  • Experience integrating security practices into the Secure Software Development Lifecycle (SSDLC) — including code reviews, threat modeling, and security testing automation.
  • Bonus points for community contributions like public CVEs, bug bounty recognition, open-source tools, blogs, etc.
  • Bonus points for experience with securing large language models (LLMs), generative AI, or ML pipelines.

Salary Range

Monthly gross salary is 17200 - 33000 pln/month

What we offer

  • Professional growth. Internal and external events, online training, conferences, books - everything you need to reach full potential. 
  • Health benefits. Private health insurance, sports access card, online workouts, consultations to feel and be your best.
  • Team spirit. Team buildings and parties with games, shows, tastings, food coupons, gifts, and it’s on us. 
  • More free time. Stay with us and additional vacation days will be added to your calendar.
  • Additional paid leave. Additional days are covered by us in cases of illness or special occasions. 
  • Flexibility. Flexible working time arrangement.
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Security Engineer | Mid-Senior | Web & Mobile · Warsaw/Gdansk/Krakow/Poznan/Wroclaw

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