At Sener Aerospace and Defence , our passion for technology has positioned us as a trusted partner in the space sector, delivering innovative solutions for leading institutional customers such as ESA, NASA, and JAXA. We work across a wide range of space systems, including communications, RF, navigation (CNG/AOCS), power supply, and electromechanical solutions for satellites in Earth orbit and interplanetary missions.

To reinforce our activity in the institutional space market, we are looking for a Tender Engineer to join our team at the Tres Cantos work center , with a strong focus on institutional tenders, bid preparation, and technical-commercial proposals for European space programs.

Mission

As a Tender Engineer, your mission will be to support and strengthen Sener’s position in the institutional space market , contributing to the preparation of competitive and compliant proposals for ESA, EC, and national space agencies.

You will play a key role in the analysis of calls for tenders, coordination of technical inputs, and preparation of proposals , working closely with engineering, project management, and finance teams. This role combines technical understanding with a strong commercial and proposal-oriented focus .

This position is well suited both for professionals with experience in tendering, bid management, or proposal engineering , and for engineers with a technical background who are motivated to transition towards tender and business development activities within the space sector.

What you will do

- Analyze institutional calls for tenders and requests for proposals (ESA, EC, national programs).

- Coordinate and prepare technical and commercial proposals , ensuring compliance with customer requirements and evaluation criteria.

- Act as a key interface between engineering teams and commercial stakeholders during the bid phase.

- Contribute to the definition, structuring, and continuous improvement of offer and tender management processes .





- Support the commercial positioning of Sener’s RF, antennas, and communication-related solutions .

- Participate in clarification phases, proposal reviews, and customer interactions during the tender process.

- Support the identification of new opportunities within institutional and technology development programs.

What we expect from you

We are looking for motivated professionals with a technical background and strong interest in tendering and proposal activities . The adecuado candidate will have:

- An engineering or technical degree , preferably related to space, telecommunications, RF, electronics, or similar fields.

- Experience or strong interest in tender engineering, bid management, or proposal preparation , ideally in institutional or public-sector environments.

- General familiarity with ESA, EC, or national space programs and procurement processes (deep expertise is not mandatory).

- Ability to understand complex technical content and translate it into structured, high-quality proposals .

- Strong coordination, communication, and organizational skills.

- Proactive attitude and willingness to develop a career at the intersection of technology and commercial activities .

- Fluency in English (written and spoken).

What we offer

At Sener , we believe people are the key to our success. We offer:

- Participation in high-impact international institutional space programs .

- A role that combines engineering knowledge with tendering and commercial activities , with clear development opportunities.

- Flexible working conditions, including remote work options and adaptable schedules.

- A comprehensive benefits package, including flexible remuneration, private medical insurance, and life and accident insurance.

- Well-being initiatives and continuous professional development programs.

- A strong commitment to diversity, inclusion, and equal opportunities, recognized by our efr certification .

If you are an engineer interested in tendering and pro

📌 Tender Engineer – Space Institutional Market (Tres Cantos)
🏢 Sener
📍 Tres Cantos