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Sales Engineer Back-office

Posted 19 May 2026
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Work experience
5 to 10 years
Full-time / part-time
Full-time
Job function
Salary
€3,500 - €4,700 per month
Degree level
Required languages
English (Fluent)
Dutch (Fluent)

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Do you get excited about technology and sales?

Are you technically minded, well-organized, and energized by supporting the sales process? At WTT in Oldenzaal, we are looking for a Sales Engineer who plays a key role in translating international customer requests into technically and commercially strong solutions.

At WTT, we build high-tech installations all over the world to process organic waste.

Your Role

As a Sales Engineer at WTT, you support the entire sales process from A to Z: from the initial customer request through to the preparation of tenders, quotations, and the handover to project execution. You will work closely with the Sales & Marketing team, engineering, operations, and our technical knowledge center.

You ensure that quotations are technically sound, complete, and feasible. Thanks to your combination of technical knowledge, analytical skills, and communication abilities, you act as an important link between sales, engineering, and project execution.

Your Main Responsibilities

  • Supporting the preparation, development, and follow-up of tenders, quotations, and commercial proposals
  • Translating customer requests and technical specifications into concrete and feasible solutions
  • Preparing and developing technical documentation, layouts, and drawings
  • Creating calculations and technical cost analyses
  • Coordinating customer requirements with engineering and operations
  • Managing and updating customer and quotation data
  • Supporting order processing and project handovers
  • Maintaining contact with customers, suppliers, and partners
  • Collaborating with the technical knowledge center for process expertise and technical validation
  • Identifying improvement opportunities and contributing to the standardization of solutions

What do we Expect from you?

  • Technical education at Bachelor’s or Master’s level, or equivalent working and thinking level
  • Affinity with industrial installations and process technology
  • At least 5 years of experience in a similar role
  • Strong analytical skills and attention to detail
  • A team player who can easily switch between commercial and technical topics
  • Technical insight and affinity with industrial/technical products
  • Good communication skills in Dutch and English (German, French, Italian, or Spanish is considered a plus)
  • Experience with drawing software, calculation software, or technical documentation is considered a plus

What we offer?

At WTT you will work in a collegial, informal and pleasant enviroment. We offer:

  • 30 vacation days, with the possibility to extend this to 40 days
  • Good employment conditions, including a profit-sharing scheme.
  • An enthusiastic team and enjoyable company outings.
  • Plenty of room for your own input and personal development.
  • The opportunity to make a real impact within a growing international organization.

Working at WTT

At WTT, it is not just about work. We believe fun and connection are just as important. That is why you can enjoy darts or table football in the cafeteria, a delicious lunch is provided every Monday, and we regularly organize sports and social activities. Hybrid working is possible, but there is always a place for you at the office.

We are true specialists in organic waste, and innovation is part of our DNA. At WTT, you will have the opportunity to develop yourself and grow within the organization. Your job satisfaction and personal development are our priority.

Waste Treatment Technologies (WTT) is a renowned and experienced supplier of high-tech waste treatment solutions. Founded in 1996, we’ve been designing, constructing, building and maintaining facilities all over the world. With offices in the Netherlands, Germany and Spain, we are able to offer our clients – a significant group of well-known international waste management companies – a comprehensive range of…


Waste Treatment Technologies (WTT) is a renowned and experienced supplier of high-tech waste treatment solutions. Founded in 1996, we’ve been designing, constructing, building and maintaining facilities all over the world. With offices in the Netherlands, Germany and Spain, we are able to offer our clients – a significant group of well-known international waste management companies – a comprehensive range of services using leading technologies and products. Successfully combining the latest mechanical and biological techniques (MBT) in turnkey projects gives us a unique position in the market. Our facilities vary from sorting stations for domestic and industrial waste to complete installations for recovering reusable materials in combination with the use of biological processes.

Energy
Almelo
30 employees