Application Security Engineer

RemoteSalary not specified
Kyiv, Ukraine · Lviv, Ukraine

Job Description, Responsibilities & Requirements

Description language:

About the Position

🇺🇦 We bring our capabilities to all institutions that help protect Ukraine across critical infrastructure, defence, and government.

Join Cossack Labs as an Application Security Engineer to review and improve software security in a remote-friendly environment.

Responsibilities

  • Reviewing and improving software security

Requirements

  • Cryptography

Work Location

  • Kyiv, Ukraine
  • Lviv, Ukraine
  • Flexible Remote

About Cossack Labs

We help ambitious companies innovate securely: innovate while preserving user privacy, innovate in peace of mind that their innovation is protected.

We build security libraries, developer tools, custom solutions and collaborate with development teams as a security engineering team. In essence, we do whatever is necessary to efficiently build practically secure systems without draining developers time and minds.

We Offer

  • Remote-friendly work environment

About the Company

Cossack Labs is pushing the boundary of what’s possible in data and software products security with research, products, solutions, and services. We build unique cryptographic tools and custom solutions to protect the data & peace of mind of millions of people and aid innovators in their hefty research.

Would you like to join?

Contact Us

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Our team will review your resume and provide feedback within 5 business days

Job Details

Company name:
Cossack Labs
Location:
Kyiv, Ukraine · Lviv, Ukraine
Employment Type:
Full-time
Work Mode:
Remote
Posted on TheJob:
Mar 27, 2026
Last checked:
Jun 29, 2026
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