NelissenAI
A private AI workspace for the whole firm
A fully private AI workspace, trained on Nelissen's own project history and documentation, that helps 70+ engineers find knowledge in seconds and draft winning tenders in a fraction of the time.
- Year
- 2025
- Platform
- Cloud web app
- Sign-in
- Microsoft login
- Hosting
- EU servers
Shown anonymized, NDA-protected
What it does
Ask anything about past projects
Type a question in plain language and get a sourced answer drawn from years of project history and documentation, instead of digging through shared drives.
Tender & quote writer
Automatically pulls in the most relevant reference projects and drafts a compelling proposal, turning days of writing into a focused review.
One hub for the whole team
A single place everyone can use from day one, designed so colleagues without a technical background are productive immediately.
Private and secure by design
Built around GDPR from the start. Everything runs inside Nelissen's own environment, sensitive data never leaves the building, and nothing is used to train external models.
Grows with the firm
A modular setup means new AI assistants can be added as needs evolve, without rebuilding what already works.
Built for everyday adoption
Rolled out in phases with pilot teams and ongoing guidance, so all 70 engineers actually use it, not just the tech-savvy ones.
70+ engineers each worked in their own way, with hard-won knowledge locked inside individual experts rather than a shared system. Writing project quotes took days, tracking down the right documentation was a constant struggle, and public AI tools were off the table given how sensitive their data is.
NelissenAI is a future-proof AI platform where 70 engineers strengthen their daily work with AI. The modular system combines enterprise-grade data security with intuitive accessibility, and new AI assistants are added seamlessly as needs evolve. The general chat delivers ChatGPT-level performance while all data stays safely inside the organisation, trained on decades of engineering expertise and company-specific knowledge.
The advanced tender writer transforms the entire tendering process through active dialogue. It asks targeted questions, automatically matches relevant reference projects, and synthesises technical documentation from past tenders. Staff with no AI experience now create compelling tender proposals that win bids, simply by sharing what they know about the project.
40% less time spent across the team
Echovise built an AI solution for our engineering firm. The result is a central hub that everyone can use right away, including colleagues without a technical background. The tender writer in particular helps us: it automatically links relevant reference projects and helps draft compelling proposals. This saves our staff a great deal of time and increases our success rate in tenders. Echovise makes AI practical and accessible. No jargon, just demonstrable results.
Branco Schot
General Director & Partner, Nelissen ingenieursbureau
More of our work
What if the software adapted to you?
Not adapted from a template. A fully bespoke AI workspace designed around your workflows, your team, and your data, built to last.
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