Senior Firmware Developer - F/M/X

Job Description

We are seeking a Senior Firmware Developer in Luxembourg to design and develop low-level embedded software running on microcontroller-based systems. The focus is on highly resource-constrained environments supporting real-time control, signal processing, and embedded communication systems.

The role involves close collaboration with cross-functional engineering teams, including electronics, mechanical, optical, and system architecture teams.

📍 Location: Luxembourg

🧠 Experience Level: Senior (6+ years)

🗣 Languages: English (Fluent)

Key Responsibilities

• Translate system-level requirements into detailed firmware specifications and software design requirements
• Collaborate with system architects and adjacent engineering teams to define and validate implementation approaches
• Adapt and integrate existing software components, including internally developed modules and open-source libraries
• Develop bare-metal firmware for MCU-based systems, including bootloaders, drivers, and low-level service layers
• Implement real-time application logic such as control state machines, signal processing algorithms, timing systems, and waveform generation
• Develop application-level test benches and support validation activities
• Debug embedded systems in collaboration with electronics engineers (PCB designers) using lab equipment
• Maintain clean, readable, and well-structured code under version control (Git)
• Produce and maintain technical documentation throughout the project lifecycle
  
  
  

Experience & Skills

• Bachelor’s or Master’s degree in Electronic Engineering, Computer Science, or a related field
• Minimum 6 years of experience in firmware and embedded software development
• Experience in defense
• Strong proficiency in C and C++
• Hands-on experience with ARM-based microcontrollers (e.g., STM32 family) and embedded processors (e.g., NVIDIA Orin or similar platforms)
• Proven experience in bare-metal development for ARM architectures
• Strong understanding of embedded communication protocols: I2C, SPI, UART, CAN (from PHY to application layer)
• Experience collaborating with electronics engineers on prototypes, hardware bring-up, and debugging using lab instruments (oscilloscope, logic analyzer, etc.)
• Solid understanding of version control systems, particularly Git
• Ability to lead technical tasks or small projects independently
• Strong collaboration skills across multidisciplinary engineering teams
• Ability to align technical solutions with mechanical, optical, and system-level constraints
  
  
  

Nice to Have

• Experience in real-time operating systems (RTOS)
• Exposure to safety-critical or regulated development environments
• Knowledge of signal processing or control systems
• Experience working in complex embedded product development cycles
  
  
  

What We Offer

• An international community bringing together 110+ different nationalities
• An environment where trust has a central place: 70% of our key leaders started their careers at the first level of responsibilities
• A robust training system with our internal Academy and 250+ available modules
• A vibrant workplace that frequently gathers for internal events (afterworks, team buildings, etc.)
• At Mantu, sustainability is part of everything we do. You’ll have the opportunity to turn your ideas into action and make a tangible impact. Every day, our teams bring our ESG commitments to life, from reducing our footprint to driving positive change within our communities. Through our WeCare Together program, you’ll be empowered to design and lead projects that create real social or environmental impact, with the company’s full support.
  
  
  

Amaris Consulting is proud to be an equal-opportunity workplace. We are committed to promoting diversity within the workforce and creating an inclusive working environment. For this purpose, we welcome applications from all qualified candidates regardless of gender, sexual orientation, race, ethnicity, beliefs, age, marital status, disability, or other characteristics.

Who are we?

Amaris Consulting is an independent technology consulting firm providing guidance and solutions to businesses. With more than 1,000 clients across the globe, we have been rolling out solutions in major projects for over a decade – this is made possible by an international team of 7,600 people spread across 5 continents and more than 60 countries. Our solutions focus on four different Business Lines: Information System & Digital, Telecom, Life Sciences and Engineering. We’re focused on building and nurturing a top talent community where all our team members can achieve their full potential. Amaris is your steppingstone to cross rivers of change, meet challenges and achieve all your projects with success.

At Amaris, we strive to provide our candidates with the best possible recruitment experience. We like to get to know our candidates, challenge them, and be able to give them proper feedback as quickly as possible. Here's what our recruitment process looks like:

Brief Call: Our process typically begins with a brief virtual/phone conversation to get to know you! The objective? Learn about you, understand your motivations, and make sure we have the right job for you!

Interviews (the average number of interviews is 3 - the number may vary depending on the level of seniority required for the position). During the interviews, you will meet people from our team: your line manager of course, but also other people related to your future role. We will talk in depth about you, your experience, and skills, but also about the position and what will be expected of you. Of course, you will also get to know Amaris: our culture, our roots, our teams, and your career opportunities!

Case study: Depending on the position, we may ask you to take a test. This could be a role play, a technical assessment, a problem-solving scenario, etc.

As you know, every person is different and so is every role in a company. That is why we have to adapt accordingly, and the process may differ slightly at times. However, please know that we always put ourselves in the candidate's shoes to ensure they have the best possible experience.

We look forward to meeting you!