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Responsibilities
Firmware Engineer
Location: Hybrid - 2 days remote
Contract: Permanent
Tinental is a pioneering energy efficiency company leveraging AI-powered IoT technology to optimize industrial machinery. We are seeking curious, passionate and results-driven Firmware Engineers to design and develop high-impact embedded firmware for smart pumps and fans, helping make industrial systems more efficient and sustainable.
We currently have openings for Mid & Senior Firmware Engineer's to join our growing team and contribute directly to innovative, real-world solutions. Senior Engineers typically take ownership of architecture and mentor others, while Mid-Senior Engineers focus on key feature delivery and system optimization.
What You’ll Do
• Modulation Algorithms: Develop and optimize automatic modulation algorithms for pumps/fans (flow, head, power calculations, PID pressure/flow control, energy efficiency via affinity laws).
• Industrial Protocol Integration: Implement and manage Modbus RTU/TCP (multi-slave register handling), Profibus (inverter communication), and dynamic dictionaries for multiple inverter brands (ABB, Danfoss, Siemens, Wilo, Vacon, etc.).
• Real-Time Firmware Development: Build FreeRTOS modules for data acquisition, task synchronization (semaphores/queues), health monitoring, and watchdog management.
• Memory & Performance Optimization: Optimize stack, heap, and dynamic memory (ESP32 PSRAM); profile and debug using ESP-IDF tools.
• Mathematical Computation: Parse and evaluate runtime functions (e.g., tinyexpr), perform binary searches for inverse solutions, handle multi-dimensional efficiency curves.
• Collaboration: Work closely with hardware teams on integration and low-level debugging (JTAG, oscilloscope, logic analyzer).
Required Skills
• 3+ years of embedded firmware development in C
• Deep knowledge of FreeRTOS and multi-threaded programming
• Experience with at least one industrial protocol (Modbus/Profibus/CANopen)
• Understanding of pump/motor control systems
• Low-level debugging, real-time system problem-solving, and rigorous testing mindset
• Optimization for constrained memory (<4 MB flash, ~520 KB RAM)
• Ability to read and interpret technical inverter datasheets
What We Offer
• Permanent contract (salary range: €45,000 - €55,000 depending on experience and level) + bonus
• 2 days per week remote work
• Free company canteen
• Be part of a diverse, dynamic, and innovation-driven team
• A clear and progressive career plan
• A real opportunity to work on a proprietary product with direct impact on energy efficiency and industrial sustainability
We’re building a high-performance team of thinkers and builders who value autonomy, depth, and excellence. At Tinental, your growth is central to our mission. We believe in transparency, meritocracy, and continuous learning - where contribution matters more than credentials. You’ll have clear paths to mastery, mentorship, and structured career levels across technical, managerial, and specialist tracks. If you want your skills stretched,
your ideas sharpened, and your teammates to push you further, this is the place.
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