Senior EGSE System Engineer Verified today

About the role

ReOrbit is looking for an experienced EGSE and AIT engineer to take ownership of the systems that validate and support spacecraft and payload integration from development through launch readiness. This role is central to ensuring that ground systems accurately reflect real flight hardware behavior, enabling reliable testing, efficient integration, and the discovery of mission-critical issues before they reach orbit.

As Senior EGSE Engineer, you will lead the design, implementation, and evolution of end-to-end EGSE architectures across hardware, software, and operational layers. Working closely with avionics, payload, flight software, and AIT teams, you will drive system-level testing, debugging, and anomaly resolution in a fast-moving environment where hands-on problem solving and engineering ownership are essential.

Responsibilities

• Own the end-to-end EGSE system to support spacecraft and payload AIT, ensuring it truthfully represents flight hardware, interfaces, and operational behavior.
• Translate system-level and subsystem requirements into executable EGSE architectures, covering electrical, data, timing, software, and operational layers.
• Design, implement, and maintain robust EGSE hardware and software, including power interfaces, data buses, simulators, emulators, and automated test frameworks.
• Enable discovery of real flight-relevant failure modes on the ground, including interface mismatches, timing issues, power sequencing faults, and operational edge cases.
• Support AIT execution and anomaly resolution, taking direct ownership of debugging, root-cause analysis, and corrective actions across teams (payload, avionics, FSW, AIT, ground).

Requirements

• 10+ years of hands-on experience with spacecraft EGSE, system-level test, or AIT, with direct responsibility for EGSE design and execution.
• Direct involvement in at least one spacecraft mission that reached orbit, where you personally owned or built EGSE used for flight hardware validation.
• Proven experience designing EGSE that interfaces with real flight hardware, not simulations only.
• Strong practical experience with spacecraft electrical and data interfaces (power, discretes, SpaceWire, Ethernet, CAN, UART, RS-422 or equivalent).
• Software proficiency for test systems (Python, C/C++, or similar), including test automation, logging, and reproducibility.
• Experience with payload EGSE, high-rate data paths, or RF communications subsystem testing.
• Familiarity with ground segment or mission control interfaces used during EGSE-based testing.
• Experience defining or improving AIT processes, regression testing, or test infrastructure scalability.
• Prior work in small or fast-moving space organizations, where ambiguity and rapid iteration are normal.
• Exposure to fault injection, stress testing, and margin testing at system level.

About ReOrbit

ReOrbit builds software-enabled satellites for secure communications, transforming satellites into intelligent, interconnected platforms. The company designs flexible architectures where networking and inter-satellite communication are integrated from concept through implementation. ReOrbit is headquartered in Helsinki, Finland, with subsidiaries in Bristol, UK and Bariloche, Argentina.

What we offer

• Challenging and rewarding environment where your ideas are heard.
• Ambitious, supportive team with expertise from both classic and new space.
• Lunch vouchers, occupational health care, additional health insurance, and social events.
• Team activities including runOrbit, climbOrbit, and games.
• Relocation and integration support for Finnish society.

The Company may require a security clearance for certain positions in accordance with applicable law and Company policy.