Senior Embedded Software Test Engineer (m/f/d), Safety & Security Platform

The role

You will shape the testing strategy and infrastructure for safety- and security-critical products in the defence sector. You will develop and maintain SIL and HIL systems, build automated test tooling, and create objective evidence for embedded products.

What you will do

• Develop end-to-end verification strategies, test specifications, test plans, and acceptance criteria.
• Build automated SIL and HIL test systems, simulation environments, and test tooling integrated into CI pipelines.
• Create automated component, integration, and system test suites for embedded real-time systems.
• Design fault-injection, fuzzing, and stress-testing harnesses.
• Develop data-collection, metrics-tracking, and automated reporting toolchains.
• Collaborate with software, hardware, and systems engineers to model and analyze products.
• Act as a technical point of contact for embedded testing.
• Establish efficient, repeatable test practices across multidisciplinary teams.

Required qualifications

• Bachelor's or master's degree in computer science, Electrical Engineering, Software Engineering, or a related technical discipline.
• Strong hands-on experience in embedded software verification and building SIL/HIL infrastructure within regulated, high-assurance environments.
• Strong Python scripting capabilities for test automation.
• Experience with writing software in C and/or Modern C++.
• Experience with embedded debugging and hardware/communication protocols (e.g., CAN, network stacks).
• Practical experience with real-time performance and timing analysis, safety/security standards, static analysis, and virtualized targets.
• Proactive, evidence-driven engineering approach.
• Clear technical communication skills.
• Professional fluency in English.

Nice to have

• Linux-based environments
• German language proficiency

Benefits

• Competitive compensation package including a bonus opportunity
• 27 vacation days to start, increasing with tenure up to 30 days
• Employer-supported pension contribution
• Learning & development support and team events budget
• Employee discounts and flexible benefits budget via Probonio
• Hybrid working setup depending on role and team needs
• Structured salary bands, levelling framework, and bi-annual development conversations
• Referral bonus program
• Dog-friendly office
• Relocation support where applicable

About the company

ARX is a dual-use technology company that specializes in developing autonomous unmanned systems and sensors for the European defence sector. The company develops unmanned ground systems and sensors to assist NATO Armies and civilian first responders.