Diverse perspectives
We operate as a core team supported by a diverse network of experts and value individuals who bring different skills and perspectives to achieve the best result.
Career at
Cossack Labs
We help organisations build and run the systems that nations depend on.
Would you like to join?
About us
We design, build, and secure critical systems that must remain operational in high-risk environments across the sectors where failure isn't an option: defence, critical national infrastructure, finance, healthcare, and GovTech.
Our team builds protection for IIoT and AI/ML systems, robotics, navigation, power grids, payment processing systems, financial and legal platforms, and applications used by millions.
If you want your work to have real-world impact, this is the place.
Our team builds protection for IIoT and AI/ML systems, robotics, navigation, power grids, payment processing systems, financial and legal platforms, and applications used by millions.
If you want your work to have real-world impact, this is the place.
Working principles
Expert authority
Our projects are driven by engineering excellence, so engineers are involved in decision-making at both tactical and strategic levels.
Purposeful processes
We keep schedules, reporting, and bureaucracy to a reasonable minimum, focusing on outcomes.
Autonomy
We support flexible, remote-friendly work, giving people the space to care for their wellbeing.
Open positions
We hire software developers, security engineers, SREs, cryptography engineers, and many more.
If you are a veteran, we’d be proud to welcome you — the skills and experience from your military service are highly valued.
If you are a veteran, we’d be proud to welcome you — the skills and experience from your military service are highly valued.
Application Security Engineer
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Golang developer (middle)
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Junior Application Security Engineer
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Project / Portfolio Manager for Security Engineering Services
Kyiv, Lviv, Ukraine
Hybrid
Full time
Project Manager for complex IT solutions
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Rust Developer (middle)
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Security Solutions Architect
Kyiv, Lviv, Ukraine
Flexible Remote
Full time
Looking for a position that’s not listed? Tell us how you could contribute
Internship
We mentor and train STEM students, giving the most promising among them the opportunity to gain their first industry experience in cybersecurity with us.
Many of our team members have recognised academic experience in teaching and mentoring early-career engineers.
Many of our team members have recognised academic experience in teaching and mentoring early-career engineers.
Grow with us
You’ll work alongside PhDs in information security and cryptography, contributors to infosec community standards, specialists in rare security topics, and business-centric security engineers with broad experience. Some have worked in infosec since the 1990s, helping shape the industry and write the standards it relies on today.
For newcomers, we offer detailed onboarding during the first weeks. At Cossack Labs you’ll discover what works for you and what you need to learn next, developing through hands-on work on challenging problems, mentoring, and continuous learning with personal development plans to guide your growth.
For newcomers, we offer detailed onboarding during the first weeks. At Cossack Labs you’ll discover what works for you and what you need to learn next, developing through hands-on work on challenging problems, mentoring, and continuous learning with personal development plans to guide your growth.