Our projects become technology that protects, connects and drives strategic sectors forward: our sectors. At Grupo Oesía , we work to ensure that innovation has a real impact , and we are looking for people who want to be part of this challenge.

WHAT WILL YOUR MISSION BE? You will be part of a multidisciplinary team where you will design, develop and integrate technological solutions that become part of high-value projects for our clients.

WHAT WILL YOU DO IN YOUR DAY-TO-DAY? As Software Expert , you will be the key figure in defining and developing the system’s software architecture, ensuring its robustness, maintainability and regulatory compliance throughout its entire lifecycle.

You will lead software development for high-security critical systems , in an environment where code quality, traceability and reliability are paramount.

- Provide technical leadership to the software development team.
- Define and evolve the system’s software architecture.
- Make key design decisions (frameworks, partitioning, communications, RTOS, etc.).
- Ensure software quality: design, coding, testing and documentation.
- Coordinate the development, integration and validation of the software with other disciplines (HW, systems, V&V;).
- Manage the complete software lifecycle (requirements → design → implementation → verification → certification).
- Ensure compliance with standards and regulations applicable to critical software.
- Participate in technical reviews and audits (PDR, CDR, TRR, etc.).
- Act as the technical point of contact for software matters with clients and assessors.
- Lead the resolution of complex technical problems at the software level.
- Ensure the traceability and consistency of the software with system requirements.
- Promote good development practices (clean code, testing, automation, CI/CD).

WHAT ARE WE LOOKING FOR?

- A degree in Computer Science, Telecommunications or equivalent.




- Over 10 years’ experience in software development in critical environments (preferably embedded).
- Experience leading software development teams from a technical perspective in complex environments.
- Solid experience in software architecture and systems design.
- Experience in development under formal standards and models in critical systems, such as: PECAL 2210 (or equivalent) DO-178B/C
- Experience in managing the full software life cycle (V-Model).
- Technical leadership skills: decision-making, managing uncertainty and results-oriented approach.
- Architectural vision and ability to understand the system at an end-to-end level (with a focus on software).

Nice To Have

- Experience in development in C/C++ and/or other languages in critical environments.
- Experience in embedded systems and RTOS.
- Knowledge of secure software architectures (cybersecurity, hardening, isolation, etc.).
- Experience in lifecycle technical reviews (PDR, CDR, TRR, QR, etc.).
- Experience in requirements management tools (DOORS, Visure) and software traceability.

WHAT WILL YOU FIND AT GRUPO OESÍA?

- Projects with real technological impact.
- Teams where sharing knowledge is part of the way we work.
- Continuous professional development tailored to each profile and individual.
- An environment where engineering and people move forward together.

If you are motivated by new technological challenges and want to be part of projects that make a difference, we would love to meet you. About Grupo Oesía Develop your career where technology has a purpose . At Grupo Oesía, we develop dual-use digital and industrial engineering projects across strategic sectors,



strengthening key capabilities for Spain and Europe from our technology centres and alongside a team of more than 3,800 professionals across Spain, Brussels, Latin America and Asia.

Grupo Oesía is a Spanish multinational company dedicated to dual-use digital and industrial engineering, developing and implementing projects worldwide.

At Grupo Oesía we believe in diversity and equal opportunities as drivers of innovation, and in inclusion as the foundation for growth. We foster an environment where everyone, without any distinction, can develop their talent and contribute to building a better future.

Cipherbit-Grupo Oesía is the first Spanish brand specifically dedicated to cybersecurity and the development of secure communication products (encryption) , certified by the CCN and NATO.

This division of Grupo Oesía is focused on the national and international environment of Armed Forces, Public Administrations, and critical infrastructures, thereby reinforcing Europe's strategic autonomy in cyber defense .

With nearly 50 years of experience, we have developed products and services that already benefit millions of people across healthcare, security and defence, space, telecommunications, finance, logistics and the agri-food sector. But what truly sets us apart are the people who make each of these projects possible.

We want you to reach your full potential . That is why we build professional environments based on equal opportunities, inclusion and recognition of each person’s talent. We foster an environment where talent can learn, collaborate and continue to grow, contributing new ideas and developing its full potential.

Because innovation happens when different perspectives work towards a shared purpose. If you are looking for a place to develop your career, take on new challenges and be part of projects with impact, we would love to meet you.

We Engineer It Together.

📌 Software Expert (Defense) - Global Opportunity (Rivas-Vaciamadrid)
🏢 Cipherbit-Grupo Oesía
📍 Rivas-Vaciamadrid