Hardware Design Engineer

3+ years of experience

Sofia, Bulgaria

Full-time, Onsite

Our client is a deep-tech aerospace startup developing intelligent airborne remote sensing systems for autonomous and remotely piloted aircraft.
Their mission is to equip next-generation aerial platforms with advanced sensing technologies, enabling safer skies, more effective missions, and a new era of intelligent airborne awareness and data-driven operations.

As an emerging startup, our client is building a focused, high-caliber engineering team to develop next-generation airborne sensing technologies. We are currently looking for a Hardware Design Engineer to support the development of one of their first products.

Key Responsibilities

Translate system-level requirements into hardware specifications.
Perform schematic capture and electrical simulations.
Design high-speed mixed-signal PCBs (ADC/DAC, FPGA/SoC, power supply).
Conduct signal integrity and power integrity analysis.
Select and validate electronics components.
Bring-up and debug prototype boards.
Work closely with RF, Software and Mechanical design teams.
Support EMI/EMC pre-compliance testing.
Contribute to DFM and production readiness reviews.
Document designs in line with Quality and System engineering processes.

Required Qualifications

MSc or BSc in Electronics, Electrical Engineering or related field.
3+ years experience in hardware design (mixed-signal and digital).
Strong PCB design skills, including high-speed interfaces and impedance control.
Experience with FPGA/SoC-based systems.
Solid lab debugging skills (oscilloscope, spectrum analyzer, logic analyzer).
Experience with Altium Designer (or similar EDA tools).
Understanding of EMI/EMC fundamentals.
Upper-intermediate level of English.

Nice to Have

Experience in radar, RF, aerospace or defense electronics.
Familiarity with DO-254 or structured hardware development in regulated environments.
Experience with environmental qualification testing.

We offer