Company Description At ESTEL, we design and manufacture advanced optical transceivers in Europe for high-speed communication in supercomputers, HPC, telecommunications, and aerospace/defence systems. Our experienced R&D; team and in-house production line enable us to deliver custom solutions tailored to demanding network applications. As a key industry player, we focus on building a resilient ecosystem that supports sovereignty, sustainability, and competitiveness in the optical communication market. Role Description This is a full-time, on-site Software Engineer role based in Málaga. ESTEL is seeking a Software Engineer to develop, maintain and improve software for automated testing and manufacturing of high-speed optical transceivers. Your primary focus will be test automation, equipment integration and reliable production data. Working alongside test, optical, R&D; and operations specialists, you will also contribute to prioritised ERP, MES and robotics-related software projects. Optical-transceiver experience is an advantage, not a prerequisite. You will be required to travel to ESTEL's production line and HQ in Belgium and our R&D; facility in Stockholm, Sweden on a regular basis to support on projects. Responsibilities will span across:
• Test Software & Equipment Integration
• APIs, SQL Databases & Traceability
• ERP & MES Integration
• Robotics-Related Software & Automation
• Engineering Support & Continuous Improvement
• Quality Management Minimum

Requirements:
• Bachelor's degree in Computer Science,



Software Engineering, Electrical Engineering or a related field, or equivalent practical experience.
• 3+ years of software development experience for industrial equipment, automated test systems or manufacturing environments.
• Strong .
NET development skills using C# and/or VB.
NET, with the ability to develop and maintain modular applications.
• Experience developing and testing RESTful APIs and working with SQL databases.
• Practical experience integrating software with equipment or external systems, with strong debugging and problem-solving skills.
• Working knowledge of version control, software testing, documentation and controlled deployment.
• Ability to collaborate with engineering and production teams, work independently on agreed tasks and learn new technical domains. Preferred Qualifications (Not Mandatory):
• Experience with optical transceivers or photonics test applications, including BER, optical power, eye diagrams or PAM4 measurements.
• Familiarity with high-speed optical communication standards, such as IEEE 802.3, OIF or MSA specifications.
• ERP or MES integration experience; familiarity with Odoo or Python for targeted internal developments.
• Experience with robotics interfaces, industrial communication or automation equipment.
• Experience with CI/CD pipelines, reporting dashboards or production-software deployment. Check the full

job description
here: https://www.e-s-tel.com/jobs/software-engineer-51

📌 Software Engineer (Málaga)
🏢 Estel
📍 Málaga