The operating system for construction subcontractor chains.
Every European job site runs on layers of subcontractors — and on the compliance, hours and invoices that flow between them. Werfvolt is the vertical SaaS that runs the chain: from onboarding a subcontractor by VAT number to a paid, Peppol-ready invoice.
The most regulated corner of EU construction runs on Excel
Subcontracting chains carry legal obligations at every link. Getting them wrong is not an inconvenience — it is joint liability, blocked payments and fines.
Chain liability (30bis)
Pay a subcontractor with social-security or tax debts without withholding, and the debt can become yours. Every invoice requires a debt check and the correct retention.
Presence registration
Checkin@work presence registration on regulated job sites — per worker, per day, across companies that share nothing but the site address.
Posted workers
Cross-border crews need A1 and LIMOSA declarations that match reality on site. Enforcement is tightening across the EU, and inspections happen on the werf, not in the office.
From werf registration to a paid, compliant invoice
One platform for clients, subcontractors and their crews — each org sees its own side of the same chain.
The loop the whole chain shares
Onboard a subcontractor by VAT number, keep every worker's compliance status current, and turn approved hours into Peppol e-invoices with the correct retention — automatically.
The chain onboards itself
Werfvolt is not sold seat by seat. A client onboards its subcontractors, because it needs their compliance status before anyone sets foot on site. Each subcontractor brings its own crews — and its other clients.
Every new organisation joins with its counterparties already on the platform. Distribution is a property of the product, not a sales team.
Regulation is the tailwind
Three forces push the whole market onto software at once.
E-invoicing is mandatory
Structured Peppol e-invoicing between Belgian businesses is required as of 2026. Paper and PDF invoices are no longer an option — every subcontractor needs tooling.
Enforcement is tightening
Site inspections, presence registration and posted-worker rules are converging across the EU. The cost of informal administration keeps rising.
Chains are getting longer
Labour shortage pushes construction toward cross-border subcontracting. More layers, more languages, more compliance surface — more need for one system of record.
Built by operators, live in production
Arcadian runs its own electrical job sites and subcontracting chain on Werfvolt — design partner, first customer and daily user in one. Every feature is field-tested before any client sees it. Key metrics are being audited and will be published here.
SaaS first, payments next
Recurring revenue from the chain today; the money that flows through it tomorrow.
Subscriptions
Per organisation and active worker — every layer of the chain is an account, and the chain keeps adding layers.
Payments layer
Retention-correct payouts between the links of the chain, on top of the invoices the platform already creates. Roadmap.
Compliance monitoring
Continuous debt checks and document expiry monitoring as a subscription upgrade for the whole chain. Roadmap.
Operators, not tourists
The team designs electrical systems, runs the job sites — and builds the software in between.
TONY K.
FounderElectrical design (KNX/DALI, AutoCAD Electrical), site measurements — and the product vision behind Werfvolt.
YURY K.
Manager (Poland)Operations in Poland: client coordination, procurement and material supply for site delivery.
ANASTASIYA P.
Manager (Germany)Legal, administrative and documentation matters — the compliance reality the product is built around.
Request the investor deck
Deck, metrics and a live product walkthrough — from the people who use it on their own werven every day.