Billing systems & revenue engineering
We design, build, integrate and operate billing systems — invoicing, approvals, pricing, metering and revenue reporting — built around the accounting, payment and ERP systems your business already runs on.
- Invoice Processing
- Approval Workflows
- Pricing Engines
- Quote Generation
- Usage Metering
- Rating & Aggregation
- Subscription Billing
- Reconciliation
- Tax & E-Invoicing
- Revenue Recognition
- Period Close
- Financial Reporting
Trusted by
- Engineering since
- 1992
- Technical specialists
- 200+
- European countries
- 6
- Quality management
- ISO 9001
What we do
Six services covering the full life cycle of a billing platform — from the pricing rules through the run itself to the close and the audit trail it leaves behind.
Billing platform development
Custom billing and financial systems for businesses whose pricing, contracts or usage model will not survive an off-the-shelf product.
Read moreInvoice processing and approvals
Capture, coding, approval routing and dunning, with committed spend visible at the moment of approval rather than at the close.
Read morePricing and quoting engines
Price books, contract rates, discount rules and quote generation held as data, so pricing stops being a release.
Read moreUsage metering and rating
Event pipelines that rate consumption and trace every invoice line back to the events that produced it.
Read moreBilling integrations
Payment gateways, accounting systems and ERPs connected and reconciled with the billing run.
Read moreRevenue reporting and close
Automated period close with checks, revenue and margin reporting, and traceability from figure to transaction.
Read more
The billing problems that don't fit a standard product
Pricing as special cases
Logic written as conditionals over years, that nobody will change the week before month end.
Usage that must be provable
Meter, log and billing run producing three different totals, and no way to say which is right.
Mid-term changes
Upgrades, downgrades and proration — where most billing disputes actually originate.
Approval chains
Routing by value, cost centre and role, with substitutes so absence never stalls a chain.
Reconciliation
Billing, the payment provider and the ledger agreeing without a spreadsheet in between.
Multi-entity, multi-country
Legal entities, currencies, VAT determination and European e-invoicing formats.
Manual period close
A close that depends on steps held in one person's head and therefore on their availability.
Deferred revenue
Recognition schedules for subscriptions and multi-period contracts, re-derivable from source.
Custom billing logic
Commercial models that no billing product will ever ship out of the box.
Don’t see your challenge here? Talk to us about your project
Billing that does not reconcile is a spreadsheet with extra steps
The integration and the reconciliation are the same piece of work. Matching rules decide what the integration has to carry — references, identifiers, settlement batches — so designing them separately guarantees rework.
- ERP
- Customers, contracts, cost centres and postings.
- Accounting ledgers
- Output posted in the dimensions finance reports on.
- Payment gateways
- Card, direct debit, bank transfer and invoice payment.
- Banks
- Statement import, payment matching and settlement files.
- Tax engines
- VAT determination across markets and legal entities.
- E-invoicing networks
- European formats, frequently a precondition to bill at all.
- CRM
- Contracts, entitlements and credit status on the customer.
- Product telemetry
- Usage events from the systems customers actually consume.
Billing and finance platforms we have delivered
Swipe to see all four projects.
Zahara: A purchase and invoice approval application
Spend approved by the right person, coded correctly and visible against budget before it becomes a commitment — with routing rules and an approval history that stays defensible.
Loral: A budgeting system owned by finance, not by code
Figures and rules that finance needs to change themselves, held as data with history, rather than assumptions buried in a spreadsheet or in code only one person will edit.
DLL: Consolidating operating-model apps into one platform
Several applications consolidated into a single scalable digital solution, which in reporting terms removed the ambiguity of each system holding part of the answer.
DLL: A mobile app on top of an established finance operation
Built to the constraints of the existing systems first — what they could expose, how often, and which figures had to agree — before any interface design began.
Industries we understand
Billing carries the commercial model of the business it serves. These are the sectors whose models we have already had to implement.
Energy & utilities
Metered consumption, tariffs, contracts and regulated invoicing.
Telecommunications
Subscriptions, overage, bundles and high-volume rating.
Financial services
Leasing, instalments, interest and audit-grade traceability.
SaaS & technology
Plans, seats, metered usage and hybrid pricing on one pipeline.
Manufacturing & B2B
Contract pricing, volume tiers and negotiated payment terms.
Retail & wholesale
Rebates, credit notes, settlement and supplier accounts.
Public sector
Budget control, approval hierarchies and statutory reporting.
Transport & logistics
Usage-based charging, surcharges and per-shipment billing.
Trusted by European enterprises since 1992
Microsoft Partner since 1998. ISO 9001:2015 certified quality management.
- 30+ years of engineering
- Software development since 1992 — from traditional enterprise systems to composable, headless commerce.
- Proven client base
- Serving enterprises across Scandinavia, the Baltics, Central Europe and the US.
- 6-country European presence
- Offices in Estonia, Denmark, Norway, Poland, Switzerland and Spain.
- 200+ technical specialists
- Developers, analysts, architects and project managers across multiple technologies.
- Deep tech stack knowledge
- .NET, Java, Node.js, React, Next.js, Vue.js, Angular, Python and the major cloud platforms.
- European regulatory expertise
- Direct experience with GDPR, EU accessibility rules, e-invoicing and emerging AI legislation.
From first analysis to long-term operation
Business analysis
Document the commercial model as it actually is — every plan, override and exception — and the close as it is actually run. Writing the close down is usually where the first savings appear.
You getA written picture of today and tomorrow, with the problems ranked by business impact.
Model & roadmap
Design the pricing model, the rating pipeline and the reconciliation rules, then a phased plan with a first release that removes a real month-end burden.
You getA phase-one scope and estimate, agreed before any build starts.
Build & integrate
Iterative delivery, with reconciliation and pre-bill checks built alongside the billing run rather than after the first disputed invoice.
You getWorking software running on your own data from the first weeks, shown in regular demos. No mock-ups.
Operate & evolve
Monitoring, exception queues, recalculation support and a continuous roadmap as the commercial model changes — because it will.
You getMonitoring, exception queues and a roadmap we keep together as the commercial model changes.
How we deliver — not what we sell
We are platform-agnostic by conviction rather than by slogan. Whether billing belongs in your ERP, in a billing product or in a system of its own depends on how much of the commercial model is genuinely yours — and we will say when it is not much.
Where a product fits, we integrate around it and keep pricing resolution as a service it can call. Where the pricing, rating or contract logic is the business, we build it properly and let the ledger stay a ledger.
Finance-facing interfaces are typically built in Next.js or React, designed around the operations that happen hundreds of times a day rather than around a demo.
Behind them we work across Node.js, .NET and Java, with event-driven pipelines for usage ingestion, idempotent processing so a retry never double-charges, and full traceability from reported figure back to source transaction.
Key questions answered
Do you replace our accounting system?
No. Billing sits in front of the ledger and posts to it. The accounting system stays authoritative for the ledger; we handle pricing, rating, approval and the audit trail around it.
Can you work with our existing billing product?
Often yes. Pricing resolution can run as a service the billing system calls, which avoids a replatform. Whether that works depends on how much pricing logic is currently embedded in the product itself.
How do you handle usage disputes?
By making every invoice line expandable back to the events that produced it, and by showing customers their consumption during the period rather than first revealing it on an invoice.
Can you automate our month-end close?
Most of it, usually. The realistic target is that routine matching runs itself and exceptions arrive in a queue with enough context to resolve quickly — not that nobody looks at it.
Do you handle multi-country VAT and e-invoicing?
Yes, either through a tax engine or through rules where the scope justifies it. We are explicit about which we are proposing and what it costs to maintain as rates change.
Let's talk about your billing platform
Tell us what your commercial model looks like today and where billing is holding it back. We will come back with an honest read on the pricing model, the reconciliation work involved, and what a realistic first phase looks like.
