Principal Software Engineer

Mercury Mission Systems Spain is specialized in the design, manufacturing and maintenance of complex high-performance safety and mission critical avionics and defense computers. We are part of Mercury Systems Inc., a US based company.

We are looking for a new talent to join our Software team in Getafe (Madrid), Spain:

Principal Software Engineer

Are you an experienced embedded software engineer looking to lead complex software activities within the avionics sector?

Mercury is looking for a Principal Software Engineer to combine hands‑on software development with technical leadership across avionics projects. You will help shape software plans, coordinate activities across internal teams and subcontractors, and ensure software delivery aligns with project and certification requirements.

What you'll be doing

• Leading software activities across avionics projects
• Specifying, designing, coding and testing embedded avionics software
• Developing and integrating software modules in C/C++
• Working with Linux kernel drivers, VxWorks 653, RTOS BSPs and application software
• Establishing software plans and tracking project delivery against them
• Supporting software verification and developing verification scripts in Python
• Coordinating internal teams and subcontractors responsible for verification activities
• Providing technical software support to customers and supporting DO-178C audits
• Preparing basis-of-estimate inputs for software activities

What we're looking for

• A Master's degree in Information Technology, Electrical Engineering or a related discipline
• Proven industrial experience as an embedded software engineer
• Strong knowledge of DO-178C and DO-330
• Experience with avionics RTOS BSPs and software lifecycles
• Linux kernel driver development experience
• Software project management skills, including task definition, planning and progress tracking
• Fluent English

If you are ready to combine technical depth, hands‑on development and software leadership within a highly specialised avionics environment, we would love to hear from you.

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Why Join Us?

• Be part of a team developing advanced electronic systems
• Collaborate with cross‑functional and international teams
• Grow your career in a high‑impact engineering role
• Contribute to products that must meet strict regulatory and quality standards

If you're ready to take your software engineering career to the next level , we'd love to hear from you.

We are offering:

• Flexibility to work from home.
• Social benefits as tickets restaurant, health insurance.
• Flexible working hours.
• Parking at the office.
• Free coffee and fruit.
• Projects with high level of complexity.
• Continuous learning and development opportunities.
• Well‑being platform.
• Inclusive culture.
• Mentorship program.
• High responsibility and autonomy to make an impact.

Why should you join Mercury Systems?

Mercury Systems is leading Commercial Provider of secure sensor and mission processing subsystems. We are pioneering a next generation defense electronics business model specifically designed to meet the current industry's current and emerging technology needs. The size and makeup of our organization enable forward thinking, entrepreneurial professionals thrive and prosper.

Mercury Mission Systems International SA (MMSI), based in Geneva and Getafe is part of Mercury Systems (USA), and is specialised in the design, manufacturing and maintenance of complex high-performance safety and mission critical avionics and defense computers.

Our Culture

We are committed to making Mercury a great place to work, no matter where our employees are located. We offer a casual and enjoyable atmosphere that allows employees to learn and grow. We help and care for one another and work as one to achieve results for us and for our customers. We value communication, transparency, and strive to foster two‑way dialogue at all levels of the organization. We are committed to lifelong learning, offering comprehensive skills training and tuition reimbursement. Whether you're just starting out on your career journey or you are an experienced professional, it's important to us that you feel recognized and rewarded for your contributions.

DETAILS OF THE MISSION

• Occupancy: 100%
• Beginning of the activity : As soon as possible
• Location: Getafe (Madrid), Spain