Software Engineer

About the Position

Autonomy in Every Drone

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.

A Software Engineer works on the full autonomy stack - from low-level interaction with the flight controller and sensors to high-level guidance logic and computer vision. You will work in a team of engineers on one of the products in the lineup, implementing integration, algorithmic and architectural solutions in existing systems.

Responsibilities

• Developing guidance and control algorithms in C++ and Python
• Integrating flight controllers and peripherals - MAVLink / MSP, distance sensors, IMU, video cameras; working with UART, I2C, SPI, GPIO
• Working with GStreamer/FFmpeg video streaming: supporting video pipelines, streaming (RTP/RTSP)
• Maintaining code quality and reliability - writing unit and integration tests, performance profiling
• Deploying builds to target hardware (Raspberry Pi and similar ARM Cortex platforms): Yocto images, GitHub Actions.

Requirements

• Strong command of C++ and Python.
• Experience with Embedded Linux and Git.
• Experience with video streaming: GStreamer, FFmpeg.
• Experience with the ARM Cortex series (Raspberry Pi or equivalents).

Nice to Have

• Knowledge of hardware interaction interfaces: GPIO, I2C, SPI, UART.

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.

About the Company

The Fourth Law (Четвертий Закон) is dedicated to developing cutting-edge drone autonomy technologies. Our solutions are used by the Defense Forces of Ukraine and various drone manufacturers. We are proud to contribute to Ukraine’s defense capabilities and have been recognized as a promising project in the defense technology sector.

Join our team and make a real impact!

Also visit our sister company Odd Systems. They produce thermal cameras and FPV drones.