Embedded Software Engineer (M/F)

Exotrail; Massy; On-site; EUR 45,000 - 65,000; Full time

Job summary

Exotrail is hiring an Embedded Software Engineer at their Massy site to support the development of propulsion systems for small satellites. The role involves designing and maintaining software for real-time systems, ensuring compliance with space industry standards, and collaborating with various technical teams.

The ideal candidate has 3-5 years of experience in embedded software, strong skills in C/C++ and Python, and the ability to work effectively in multidisciplinary teams. Fluency in French and English is required.

Qualifications

• 3-5 years of experience in Embedded Software.
• Familiarity with ECSS, DO-178C, IEEE, and MISRA standards.
• Strong communication skills in French and English.

Responsibilities

• Design, develop, test, and maintain embedded software for real-time constrained systems.
• Develop software tools for test benches, verification, and validation activities.
• Ensure traceability between software requirements, code, and tests.

Skills

Embedded C/C++

Python

Communication protocols (CAN, RS422, RS485, UART)

Analytical skills

Problem-solving abilities

Multicultural teamwork

Tools

GitLab

Static analysis tools

Debugging environments

Job description

About Exotrail

Born from a strong ambition to reach for the stars, Exotrail is a fast‑growing scale‑up founded in 2017. Its mission is to develop and commercialize propulsion systems for small satellites on a global scale.

Job Description

We are looking for an Embedded Software Engineer at our Massy site to support the rapid growth. Attached to the System Engineer Team, you will contribute to the design, development, verification, and validation of embedded software dedicated to propulsion systems. You will also develop ad hoc software tools supporting testing and V&V activities.

Working closely with multidisciplinary teams, you will help ensure the quality, reliability, and compliance of software deliverables in accordance with space industry standards (ECSS, DO‑178C, IEEE, MISRA) and internal development processes.

You will collaborate with System, Electronics, Software, Test, Plasma, Mechanical & Thermal, Industrial, Quality, and Project teams in a highly technical and fast‑paced environment.

Main Responsibilities

• Design, develop, test, and maintain embedded software for real‑time constrained systems.
• Develop software tools for test benches, verification, and validation activities.
• Contribute to software requirements definition and ensure traceability between requirements, code, and tests.
• Define and execute automated test campaigns and support software qualification activities.
• Collaborate with multidisciplinary teams on software architecture, technical reviews, and documentation.

Preferred Experience

• 3‑5 years of experience in Embedded Software.
• Strong proficiency in embedded C/C++ and Python for test automation tools.
• Experience with communication protocols such as CAN, RS422, RS485, and UART.
• Knowledge of RTOS, low‑level drivers, and embedded software architectures.
• Familiarity with ECSS, DO‑178C, IEEE, and MISRA standards and development tools.
• Experience with GitLab, static analysis tools, debugging environments, and software configuration management.

Soft Skills

• Strong analytical, organizational, and problem‑solving abilities.
• Autonomous, rigorous, and detail‑oriented mindset.
• Ability to work effectively within multidisciplinary and multicultural teams.
• Clear written and verbal technical communication skills.
• Professional proficiency in French and English.

Equal Opportunity Statement

We are committed to recruiting the right people for the right job regardless of your private background.