Up to seventy percent of your project is procurement.

The unit price is optimized. That is rarely the biggest issue. Where is the material, when will it arrive, and is it certified? Dundir is building a mathematical procurement solver and a jobsite digital twin.

One euro of project cost, divided Donyavi et al. 2024, in Hamppi 2025
Procurement is not a back office function It is the cost structure

The triple crisis

The bill is already running.

31.7%
of estimator working hours lost to clerical data entry rather than cost analysis. Calculating a single formal quotation takes a median of 42 labor hours.
50 min
idle wait time at the jobsite gate for 70% of material delivery trucks. 95% of delivery tickets failed data quality criteria in an audit of 831,206 records. Handover delays of 4 to 6 weeks under the Dutch Quality Assurance Act (Wkb) are reported.
<5%
of staff see a 500 to 600 million euro Dutch infrastructure project through from start to finish, one interviewee in a TU Delft study estimates. Procurement intelligence evaporates with staff turnover. At one contractor studied, cleansing more than 1,000 historical projects left 54 usable.

Laryea & Hughes 2011 · EIB 2014 · Aldeeb 2024 · Qflow 2025 · Eerste Kamer 2026 · VNG 2024 · Rockx 2023, TU Delft · Steuer et al. 2023

The platform

Three complementary engines.

A language model writes an answer. An optimization engine calculates one. Dundir is being built to connect mathematical procurement optimization with verification at the gate and an accumulated contract memory.

  1. 01Specificationdesign
  2. 02Solverresearch and design
  3. 03Gate checklab prototype
  4. 04Wkb dossierdesign
  5. 05Contract memorydesign
The design in five steps. None is built yet; the first edge hardware for step 03 runs on the bench.

The design has three interconnected modules, meant to run locally on your own infrastructure. Each is at its own stage:

1. Deterministic Procurement Engine (research and design): Combinatorial optimization across unit price, delivery schedule, transit miles, and carbon intensity. Deterministic by design: identical inputs must yield identical outputs every time, without the numerical drift of generative AI (up to 8,354 euro on one subcontractor total in Hamppi 2025).

2. Jobsite Digital Twin & Smart Gate (lab prototype): The goal: OCR at the gate reads delivery tickets and license plates on arrival, matches purchase orders, delivery receipts, and invoices, and builds the Dossier Bevoegd Gezag under the Dutch Wkb as it goes. Today the first edge hardware runs on the bench: two linked boards with a small language model on the chip, no internet needed. Camera and smart glasses come next.

3. Forecasting & Institutional Memory (design): Actual delivery punctuality, defect rates, and schedule variances are meant to feed the scoring parameters for future tenders, so operational knowledge stays when staff leave.

Designed to keep your data in your network. The system is designed to run on-premise, so a public body can stay inside its own security frameworks (such as the Dutch BIO). The design trains no one else’s models on your data.

Where we stand

Not finished, and we would rather say so ourselves.

Dundir is a research initiative with a company around it, not a finished off-the-shelf product with a marketing story around it. The optimization theory is established; its application to Dutch construction procurement and jobsite logistics is new.

The fundamental question remains open: what does optimal mean when balancing price, delivery time, certification, gate logistics, and carbon footprint simultaneously, and at what data volume does this approach outperform an experienced buyer and jobsite superintendent?

That is why we seek design partners rather than software buyers. Partners who join at this stage help determine how the system is calibrated and what gets built first.

What the research does not claim Academic literature establishes the problem and the local deployment model. It does not prove that our solver buys more cheaply in practice than your senior estimator. That validation requires empirical pilot data, which we gather together.

Who it is for

Two buyers, one supply chain.

50 to 500
Mid-size contractors. Eliminate manual data entry and halt jobsite delays. The goal is to capture the Wkb handover record and CPR 2024 certificates at the moment of delivery.
342
Dutch municipalities. Every public award decision must be demonstrably defensible under Aanbestedingswet Article 2.130. Dundir is designed to give a mathematical audit trail at selection and to check contract compliance on delivery.

Regulatory drivers enforcing this

Aanbestedingswet art. 2.130CPR 2024/3110Wkb Handover DossierEU AI Act Dec 2027CSRD Scope 3