The Fourth Law  is a leading Ukrainian manufacturer of autonomy technologies for drones. Our solutions are codified according to NATO standards and are currently utilized by over 50 units of the Security and Defense Forces of Ukraine, as well as 20+ drone manufacturers.

Our products are named after prominent Ukrainian figures of the “Executed Renaissance” and the “Sixtiers” movement—Vasyl Stus, Olena Teliha, Mykola Zerov, and Anatoliy Lupynos.

In 2026, the company was recognized by DOU as the most promising project in the defense tech sector.

Requirements:

• 5+ years of experience in game development or simulation systems, with at least 2 years in a leadership role.
• Extensive experience with programming languages such as C++, Python, or C#.
• Strong hands-on experience with Unreal Engine and/or Unity tools.
• Deep understanding of physics, particle systems, and real-time dynamics.
• Proven ability to optimize performance and solve complex technical challenges.
• Experience leading and mentoring a team of engineers.

Nice to Have:

• Expertise in fluid, rigid, or soft body simulations.
• Knowledge of procedural content generation and behavioral AI.
• Experience with cloud-based or distributed simulations.
• Familiarity with autonomous systems or robotics applications.

Responsibilities:

• Lead the development and maintenance of simulation tools for robotics and drone systems.
• Debug, test, and optimize simulations for performance, reliability, and real-time dynamics.
• Build and improve simulation systems for physics, AI, and dynamic environments.
• Drive the exploration of innovative technologies such as procedural generation and AI-driven simulations.
• Collaborate with cross-functional teams to integrate simulation capabilities with other system components.
• Provide leadership and mentorship to a team of simulation engineers, ensuring high standards of code quality, collaboration, and innovation.

Why Choose Us?

• Work that has a real impact. We build products that directly strengthen Ukraine’s defense capabilities.
• Opportunity to work alongside top-tier engineers in MilTech and autonomous systems.
• Official employment under the Diia.City legal framework.
• The possibility of reservation (deferment) for conscripts in accordance with the requirements of current legislation.
• Annual paid leave — 24 calendar days.
• Additional paid leave for veterans — 14 calendar days.
• Paid sick leave in accordance with the law.
• Possibility of reimbursement for training costs according to internal company policies.

We are not just looking for employees, but for like-minded individuals who share our values and are ready to build the future of Ukrainian MilTech.