Control Engineer

About the Position

The Fourth Law (Четвертий Закон) - a leading Ukrainian manufacturer of drone autonomy technologies. The company’s solutions are codified to NATO standards and are used by more than 50 units of the Defense Forces of Ukraine and 20+ drone manufacturers. Our products bear the names of Ukrainian figures of the Executed Renaissance and the Sixtiers - Vasyl Stus, Olena Teliha, Mykola Zerov, and Anatolii Lupynos.

In 2026, the company received an award from DOU as the most promising project in the defense technology sector.

Role mission: To build a bridge between mathematical control theory and the real behavior of a drone in flight. Your task is to develop, validate in simulation, and test on real drones the control algorithms that determine how The Fourth Law’s flight platforms respond and stabilize in combat conditions.

Responsibilities

• Mathematical modeling: Building models of flight platform dynamics.
• Control algorithm development: Creating and tuning control algorithms, working with stability, filtering, and controller response.
• Simulation validation: Verifying solutions in a simulator before moving to real-world testing.
• Data analysis: Working with sensor data and analyzing system behavior in real-world conditions.

Requirements

• Strong practical command of linear algebra and its application in work. Good understanding of calculus.
• Basic understanding of differential equations.
• Practical experience applying mathematics in engineering work (for example, computer graphics, game physics, robotics, simulation, physics engineering).
• Strong command of Python or C++.
• Willingness to actively study control theory independently - the company will train you, but your own initiative is required. Willingness to learn to fly a drone and take part in real flight testing.

Nice to Have

• Practical experience with control systems or robotics.
• Experience with drones or flight-controller ecosystems (PX4, ArduPilot, Betaflight).

We Offer

• Work that makes a real impact.
• We create products that directly strengthen Ukraine’s defense capabilities.
• Work with top engineers in MilTech and autonomy.
• Official employment in Diia City.
• Possibility of reserving military-obligated employees in accordance with current legislation.
• Annual paid leave - 24 calendar days. Veterans are entitled to additional paid leave - 14 calendar days.
• Paid sick leave in accordance with the law.
• Voluntary health insurance after completing the probation period.
• Possibility of reimbursement of training expenses in accordance with the company’s internal policies.

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

About the Company

The Fourth Law / TFL / Четвертий Закон - We work for those who protect us. Also visit our sister company Odd Systems. They produce thermal cameras and FPV drones.