Senior Embedded Software Engineer - HVAC & Climate Control

• Rotterdam Area, Netherlands
• Hybrid-Remote Flexibility (in-country)
• ZZP / Freelance Contract
• Initial 12-months + extension likely
• Rate Up To 100 EUR Per Hour - Depending on Experience

A leading industrial automation company is searching for someone to take a vital role in building the embedded control features that run critical HVAC and environmental control operations.

These include fans, heaters, vents, screens, lighting, dosing, weather strategies, and secure connectivity into a modern cloud ecosystem.

If you’ve built mission-critical embedded control systems where software drives real-world physics and failure is not an option, this mission is for you!

What you’ll work on...

• Design and implement embedded control features for climate & process automation (multi-zone control, sequencing, interlocks, safe states).
• Develop and improve control algorithms and models (e.g., PID/advanced control concepts, constraint handling, feed-forward using weather data, scheduling logic).
• Engineer for high availability and resilience including watchdogs, fault handling, fallback strategies, backup/restore, safe degradation, deterministic behavior.
• Work across modern components and legacy systems, with careful refactoring and backwards compatibility.
• Collaborate with cloud/digital services teams and full-stack product teams from edge to cloud.
• Design automated testing strategies, integration testability, runtime observability/telemetry, CI-friendly architectures.

What we’re looking for...

• Strong track record building embedded systems that control physical processes (industrial automation, HVAC, robotics, energy, motor-control, automotive ECUs, etc.)
• Experience guiding architecture decisions
• Excellent C/C++ skills (architecture and hands-on implementation)
• Strong Embedded Linux experience in the field
• Comfort with control systems thinking (timing, determinism, feedback loops, tuning, modelling mindset)
• “Quality-first” engineering habits: defensive design, testability, clear interfaces, reliable releases

Bonus Skills...

• Experience with safety-/mission-critical systems (fail-safe/fail-operational design)
• Multi-protocol device integration (sensors/actuators, industrial networking, secure remote access patterns)
• Edge-to-cloud integration experience (telemetry, device identity, secure messaging, remote diagnostics)

5V Tech are acting as an Employment Agency for the purposes of this position. We offer a reward scheme if you can recommend someone for this position - €250 for you and €250 to a charity of your choice. 5V Tech are recognised talent solutions experts within IoT and Deep Tech, working across Europe, the UK, and North America