Sales Engineer FSO, Delft

Sales Engineer FSO

Are you a proactive team player with experience in the domain of sales and optics for space who likes to work in multidisciplinary teams on a variety of different projects? Then you are the engineer we’re looking for!

Imagine a world where data flows instantly between earth and space, providing real-time access to life‑saving services and strengthening global security with unbreakable communication lines. This is the future we are building.

About Demcon FSO Instruments is at the forefront of developing advanced laser satellite communication technology. Together with our partners and shareholders we are committed to strengthening the Dutch space industry and pushing the boundaries of communication systems to enable faster, more reliable, and secure connections between satellites, airplanes, drones and ground stations. By pushing the boundaries of what is achievable, we are shaping the future of space communication, both locally and globally.

FSO Instruments is a Joint Venture between DEMCON and VDL that develops and manufactures optical‑communication components, sub‑systems, and terminals. FSO Instruments combines the strengths of DEMCON and VDL ETG, inspired by TNO technologies, to let laser satellite communication take the step towards industrialization. We have strong heritage in Semiconductor and Aerospace, and bring thisto optical communications:

Developing and engineering of laser communication terminals

Modular and Standardized functional (sub-)systems for laser communication

High tech contract manufacturing expertise for cost‑effective high‑volume production

At FSO Instruments we work closely with dedicated partners for development and supply, as well as with our parent companies to ensure we achieve the most competitive products for the market for optical communications in space.

As a Sales Engineer, you will bridge the gap between our cutting‑edge technology and customer needs. You’ll work closely with engineering and commercial teams to translate technical capabilities into compelling value propositions and help shape product‑market fit.

What are you going to do?

Deliver technical presentations and product demonstrations to prospective clients.

Collaborate with engineering teams to tailor solutions to customer requirements.

Translate complex technical specifications into clear commercial messaging.

Support proposal development for tenders, subsidy projects, and custom offers.

Maintain strong relationships with clients, acting as a technical advisor throughout the sales cycle.

Identify market trends and customer feedback to inform product development.

Assist in contract negotiations, ensuring alignment between technical scope and commercial terms.

Represent FSO Instruments at industry events, conferences, and customer meetings.

Translate market needs into product requirements and take product ownership.

Answer first‑line technical questions from customers.

What do you bring to the table?

Bachelor’s or Master’s degree in Engineering, Physics, Optics, or related field.

Strong technical understanding of optical systems, satellite communications, or semiconductor technologies.

Proven experience in technical sales, business development, or customer‑facing engineering roles.

Excellent communication skills in Dutch and English.

Ability to work independently and collaboratively in a startup‑like environment.

Commercial awareness and a passion for technology‑driven innovation.

What do we offer you?

At FSO Instruments we have a‘flat’ organization where people can easily find and help each other. We value a comfortable and inclusive workplace. There is a lot of emphasis put on personal needs and we discourage overtime, because we know how important work‑life balance is.

Furthermore, you can count on, among other things:

A good, market‑based salary

31 days off and 8% vacation allowance

Possibility to work from home, maximum 2 days a week

A good pension plan at Zwitserleven

The opportunity to follow training and courses, or externally, so you can further develop your knowledge

A laptop and mobile phone from work

Bicycle plan





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