Senior Embedded Systems Test Engineer (All genders)

ABOUT US KONUX is a dynamic and fast-growing technology company that is transforming the way the railway industry works. Our AI-powered solutions empower our customers to make smarter, data-driven decisions, and our culture is fueled by grit, ingenuity, and credibility - we believe that these values are essential to unlocking the potential of technology and making a real impact. At KONUX, we are passionate about driving innovation in the fields of IoT and AI, and we are looking for like-minded individuals to join our team. JOB DESCRIPTION We are looking for an Embedded Software Engineer (m/f/x) to develop, test, and maintain firmware for industrial IoT devices. You will work closely with hardware, electronics, mechanical, cloud, and product teams to bring robust embedded systems from prototype to production. The role covers low-level firmware, sensor interfaces, power management, communication modules, production testing, and long-term device reliability in the field. YOUR IMPACT  * Developing and maintaining embedded firmware for microcontroller-based devices * Implementing and testing drivers for sensors, memory devices, power-management ICs, and communication modules * Working with interfaces such as I²C, SPI, UART, GPIO, ADCs, and timers * Supporting board bring-up, hardware tests, and firmware debugging * Writing clean, structured, and well-documented C/C++ code * Creating and maintaining test tools and scripts in Python * Supporting power optimization for battery-powered devices * Helping with data acquisition, device diagnostics, logging, and configuration * Debugging issues using serial logs, debuggers, oscilloscopes, and logic analyzers * Working with Git, issue tracking, code reviews, and documentation * Supporting production test, verification, and field troubleshooting activities TO BE SUCCESSFUL IN THIS ROLE, YOU’LL NEED TO HAVE: * Degree in Electrical Engineering, Computer Engineering, Computer Science, Embedded Systems, or a comparable technical background * First experience with embedded software development, either through work, university projects, internships, or personal projects * Basic programming skills in C and/or C++ * Basic understanding of microcontrollers and common embedded interfaces such as I²C, SPI, UART, GPIO, ADC * Willingness to learn hardware-related debugging and embedded development tools * Ability to read basic schematics or willingness to learn * Structured and careful working style * Good problem-solving skills and curiosity for technical details * Good English communication skills (German language skills are a plus)   WHY JOIN US 💸 Competitive salary (65,000 - 80,000 EUR p.a. depending on experience) 📉 Equity (all permanent KONUX employees have equity!) 📖 Dedicated Learning & Development budget of 3.600€ p.a. 🏠 Comprehensive relocation support if this opportunity at KONUX requires you to move 👨‍💻 Hybrid working model: Meet your colleagues in the office minimum 2 days per week 🏢 Modern workspace with cool rooftop with mountain view 💻 Flexible working conditions, home office equipment and free choice between a Windows or Apple laptop ❤️‍🩹 Health benefits supporting your physical and mental well-being, e.g wellpass/gym membership and mental health app license 🍒Fruits, snacks and beverages for energy and our very own Oma cooking in office every Thursday 👴 Company pension scheme 🙌 Access to Corporate Benefits and Future Bens 🌴 27 vacation days (+1 day on every work anniversary for 3 years) 💁 Volunteering activities (2 additional days off) 🍻 Company and team events  🐶 We are a pet-friendly company, so your four-legged friend can join you in the office! EQUAL OPPORTUNITY At KONUX, we believe that a diverse team achieves better results faster. So here’s the deal: You bring in your very own perspective. We promise to judge your qualifications and performance, not your age, sex, religion, skin color, gender identity, family status or disability.

ABOUT US STARK is a new kind of defence technology company revolutionising the way autonomous systems are deployed across multiple domains. We design, develop, and manufacture high-performance unmanned systems that are software-defined, mass-scalable, and cost-effective — providing operators with a decisive edge in contested environments. We are focused on delivering deployable, high-performance systems — not future promises. In a time of rising threats, STARK is bolstering the technological edge of NATO Allies and their Partners to deter aggression and defend Europe, today. ABOUT THE TEAM We are the architects of the physical experience. As part of our R&D-driven Electronics Department our Hardware Team turns visionary ideas into high-performance technology. In our enthusiastic and high-energy environment, we have the tools, the talent and the passion to engineer first-class products that lead the global market. YOUR MISSION As a Senior Hardware Engineer, you will architect and design advanced electronics by translating complex system requirements into high-performance hardware solutions. Serving as the primary module owner, you will drive the hardware lifecycle from initial concept and cross-functional integration — collaborating closely with mechanical, embedded software and system teams — through to rigorous design verification and successful mass production.  RESPONSIBILITIES * Support system engineers during concept design phase * Review the requirements from the system perspective and derive them to the next level * Design complex PCBs in Altium for advanced drone and aerospace platforms in coordination with mechanical engineers as well as embedded software engineers * Support internal prototyping department and verify your design according to test requirements  * Be ready for test campaigns on system level and support field-engineers in terms of maintenance QUALIFICATIONS * Bachelor’s or Master’s degree in Electrical Engineering, Electronics Engineering, Mechatronics, Aerospace Engineering or a related field * 5-10 years of hardware/electronic design experience * Strong multilayer PCB, high-speed digital and mixed-signal design expertise * Advanced Altium Designer experience * Strong debugging and verification skills using lab equipment * Experience in aerospace, defense, robotics, automotive, or other safety-critical industries * Capability of providing best solutions by having limited amount of time * Ability to independently lead hardware development from concept to production * High flexibility to work with changing requirements NICE TO HAVE * Experience in developing systems according to the Safety Integrity Levels, DIN EN 61508 / 61511, ISO 26262, IEC 61508 or similar * Experience of designing for EMI/EMC compliance of PCB as well as on system level * German language skills for collaboration with customers and procurement stakeholders