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About the Role

Reflex Aerospace is seeking an Embedded Software Engineer to join the Satellite Equipment Engineering department, focusing on the development of actuators and sensors for high-performance satellite technology.

Responsibilities

Implement low-level drivers for ARM-based MCUs and external chips in real-time operating system and bare-metal environments.
Implement software for satellite subsystems such as reaction wheels, GNSS receivers, star trackers, and sun sensors.
Collaborate with the hardware and electronics team on board handover, bring-up, and validation.
Work with the Flight Software team to define and test interfaces between subsystems.
Assist with on-orbit flight operations.
Configure peripherals (timers, GPIO, ADC, DMA, communication buses) from datasheets and reference manuals.
Write and test drivers for sensors and actuators, verifying hardware performance.
Debug on real hardware using a debugger, logic analyzer, and oscilloscope.
Write unit and integration tests to specify firmware behavior.
Write Python tools for testing, calibration, and automating repetitive tasks.
Update documentation, including setup notes, standard operating procedures, and bring-up documentation.

Requirements

Degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field.
Up to 3 years of hands-on embedded development experience in domains such as robotics, real-time control systems, or low-level systems software.
Solid grasp of C, including understanding of volatile, interrupts, and safe data sharing between ISR and main loop.
Working knowledge of Python for scripting and test tooling.
Experience building a microcontroller project with working firmware (clocks, GPIO, timer interrupt, serial peripheral).
Experience reading data from an I²C or SPI device and verifying its accuracy.
Comfortable using a hardware debugger (SWD/JTAG) for code stepping, breakpoint setting, and memory inspection.
Familiarity with git, code review, and working on Linux with a GCC-style toolchain.
Ability to read schematics to identify components and connections.

Skills

C
Python
Embedded development
ARM-based MCUs
Real-time operating systems
Bare-metal environments
Low-level drivers
Microcontroller projects
I²C
SPI
Hardware debugging
Git
Linux
GCC toolchain
Schematic reading
RTOS (FreeRTOS, Zephyr)
ARM Cortex-M
CAN
Unit testing
Rust

Location

Germany

Work Type

Hybrid
Flexible working hours
Permanent employment

Experience Level

Up to 3 years

Education Level

Degree in Computer Science, Computer Engineering, Electrical Engineering, or a related field

Benefits

30 days of paid vacation
Company holiday on April 12th
Annual training budget of 1.500€
Contribution to Urban Sports membership
Discount on public transportation
20% contribution to private pension plan
Access to Corporate Benefits platform

About the Company

Reflex Aerospace is a NewSpace startup founded in 2021, headquartered in Munich and Berlin.
The company leads in providing advanced dual-use satellite technology at unparalleled speed.
Reflex Aerospace leverages the latest techniques to modernize payload-centric satellite development and production.
The company achieves significantly faster delivery times and enhanced reliability.
By applying algorithmic engineering and streamlined system design processes, Reflex accelerates satellite delivery for lightning-fast innovation.