Embedded Systems Engineer

Submer - Datacenters That Make Sense

Submer - Datacenters That Make Sense

Software Engineering
Rubí, Barcelona, Spain
Posted on Wednesday, June 19, 2024
Location & work modality: Rubí / Barcelona

Start: ASAP

Type of Contract: Full Time / Permanent

About Submer

The best way to introduce you to Submer is undoubtedly through our values: Sustainable, Unique, Bold, Making Sense, Empathetic and Reliable. If these resonate with you we're sure you will find your place here in no time.

At Submer, we believe that our digital world can be more sustainable, more efficient and more environmentally friendly. Submer is solving the biggest problems of datacenter, supercomputer, hyperscale and edge applications to make that future possible.

Our multinational talented team has a huge passion in reducing IT environmental footprint and expertise in datacenter design and day-to-day operations. We’re scaling our team and operations worldwide to meet growing international demand.

What Impact You Will Have

We are seeking a highly skilled Embedded Systems Engineer to play a critical role in the development of our advanced cooling system. The ideal candidate will have a strong background in STM32 microcontrollers firmware and expertise in designing and implementing embedded solutions for complex control systems. Your work will directly impact the efficiency and reliability of our cutting-edge cooling technology.

What You’ll Do

Firmware Development:

  • Design, develop, and maintain embedded firmware for our cooling system using STM32 microcontrollers.
  • Implement control algorithms for managing the cooling process, including temperature regulation, fan control, and fluid management.
  • Develop and integrate communication protocols for interaction with sensors, actuators, and other system components.
  • Manage the full firmware lifecycle: development, testing, release, deployment, and updates.

Hardware Integration

  • Interface with various digital and analog sensors (e.g., temperature, pressure, flow) and actuators (e.g., fans, pumps, valves) used in the cooling system.
  • Collaborate with hardware engineers on PCB design, providing input and feedback from a firmware perspective.
  • Collaborate with hardware engineers on PCB design, understanding at high level and giving feedback.
  • Coordinate with PCB manufacturers to ensure designs meet firmware requirements and specifications.

System Optimization

  • Analyze system performance data and optimize control algorithms to maximize cooling efficiency and energy savings in coordination of HW engineering teammates.
  • Implement fault detection and diagnostics mechanisms to ensure system reliability.

Testing And Debugging

  • Develop and execute comprehensive test plans for firmware and hardware integration.
  • Troubleshoot and resolve issues related to system performance, reliability, and communication.


  • Maintain clear and concise documentation of firmware architecture, design decisions, and test results.

What You’ll Need

To perform in this job, you’ll likely have:

  • Bachelor's or Master's degree in Electrical Engineering, Computer Engineering, or a related field.
  • 3+ years of hands-on experience with STM32 microcontroller programming.
  • Demonstrated expertise in developing embedded solutions for control systems.
  • Proven ability to understand PCB schematics and layouts and provide constructive feedback.
  • Experience managing the full firmware lifecycle, from development to deployment and updates.
  • Experience with communication protocols like Modbus or similar.
  • Proficiency in C/C++ programming languages.
  • Familiarity with embedded development tools and debugging techniques.

What We Offer

  • Attractive compensation package reflecting your expertise and experience.
  • Restaurant Pass.
  • Private Health Insurance.
  • Languages classes (English).
  • A healthy work environment with fresh fruits to energise and an on-site gym for active breaks.
  • A great work environment characterised by friendliness, international diversity, flexibility, and a hybrid-friendly approach.
  • You'll be part of a fast-growing scale-up with a mission to make a positive impact, offering an exciting career evolution.

Our Inclusive Responsibility

Submer is committed to creating a diverse and inclusive environment and is proud to be an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, veteran status, or any other protected category under applicable law.

"Submer was born in 2015 from two brilliant and original minds, Daniel Pope and Pol Valls, to make operating and constructing data centers more sustainable and efficient.

Our Mission is to build sustainable and future-proof digital infrastructures to create a better and fairer world with sustainable technology."