Our projects become technology that protects, connects and drives strategic sectors: our own. At Grupo Oesía, we work to ensure innovation delivers real impact, and we are looking for people who want to be part of that challenge. WHAT WILL YOUR MISSION BE?
You will be part of a digital team where you will design, develop and enhance solutions already operating in production environments, tackling real-world challenges alongside a multidisciplinary team.
WHAT WILL YOU DO IN YOUR DAY-TO-DAY ROLE?
Solid experience as a Backend Developer.
Advanced knowledge of Golang.
Hands-on experience with Kubernetes, including basic deployment and service management within clusters.
Knowledge of microservices architectures and REST API design.
Familiarity with version control systems (Git) and agile collaborative workflows.
Understanding of software development best practices, including testing, Continuous Integration, and Continuous
Deployment (CI/CD).
Strong teamwork and communication skills.
WHAT ARE WE LOOKING FOR?
Design, develop, and maintain backend services and APIs that support the platform.
Participate in the full software development lifecycle, including technical design, implementation, testing, deployment, and monitoring.
Collaborate with cross-functional teams to define scalable and secure architectures.
Optimize the performance and reliability of existing systems.
Contribute to the continuous improvement of processes, best practices, and code quality standards.
Participate in code reviews and technical documentation activities.
Collaborate in the deployment and management of services on containerized infrastructure.
What will you find at Grupo Oesía?
Projects with real technological impact.




Teams where sharing knowledge is part of everyday work.
Continuous professional development tailored to each profile and individual.
An environment where engineering and people grow together.
If you are motivated by tackling new technological challenges and being part of projects that leave a lasting impact, we would be delighted to meet you.
Build your career where technology has a purpose. At Grupo Oesía, we develop dual-use digital and industrial engineering projects in strategic sectors, strengthening key capabilities for Spain and Europe through our technology centres and alongside a team of more than 3,800 professionals across Spain, Brussels, Latin America and Asia.
Cipherbit-Grupo Oesía is Spain’s leading brand fully dedicated to cybersecurity and the development of secure communications (Encryption), certified by the Spanish National Cryptologic Centre (CCN) and NATO.
We work alongside Armed Forces, Public Administrations and critical infrastructure operators, both in Spain and internationally, strengthening Europe’s strategic autonomy in cyber defence.
But what truly sets us apart are the people who make each of those projects possible.
We want you to develop your full potential. That is why we build professional environments based on equal opportunities, inclusion and the recognition of every individual’s talent.
We foster an environment where talent can learn, collaborate and continue growing, contributing new ideas and reaching its full potential. Because innovation thrives when different perspectives work towards a shared purpose.
If you are looking for a place to grow your career, take on new challenges and be part of impactful projects, we would love to meet you.
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📌 Remote Golang Developer (Rivas-Vaciamadrid)
🏢 Oesía Group
📍 Rivas-Vaciamadrid