Entry point
Feasibility proof, 2 weeks
We build the riskiest piece of your system as a working proof. You leave with a yes, a no, or a different architecture.
Solutions
Solutions for the part of the system that carries the risk.
We build and operate software for fintech, compliance, e-commerce and real estate, where a mistake is a reportable event.
On this page
Four things we are hired for.
Every engagement starts with a fixed-scope entry point, so you know the cost and the outcome before committing to a build.
01
Regulated platforms
For products where the regulator is a stakeholder.
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Exchange and market integrations
EUREX, real-time data, multi-currency settlement.
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Compliance automation
KYC and AML workflows, public register checks, audit trails by design.
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Marketplaces with legal weight
Property, financial products, gated contact data.
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Payment flows that survive an audit
PSD2, SEPA, reconciliation.
Proof: boxtrades.de, wb-check.de, we-home.pe.
02
EU market entry
For US products launching in Germany and the EU.
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Regulatory mapping
Which rules apply to your product, and which do not.
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Data residency and hosting
EU infrastructure, GDPR architecture, processor agreements.
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Local payment rails
SEPA, PSD2 strong authentication, German payment habits.
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Launch readiness
The technical checklist a German counterparty will ask for.
Proof: four US platforms launched in the EU, compliant in under eight weeks.
Entry point
Compliance gap assessment, 5 days
A written map of what your product needs to change before it can operate in the EU, with effort estimates.
03
Enterprise commerce and integration
For businesses where the ERP is older than the team.
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ERP bridges
SAP and legacy systems connected to modern storefronts and pricing.
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B2B and B2C in one system
Contract pricing, tiered catalogues, consumer checkout.
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Data migration without downtime
Versioned, reversible, tested against production data.
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Pricing and inventory engines
Rules that finance can read and audit.
Proof: twelve custom platforms with full ERP synchronisation.
Entry point
Integration audit, 2 weeks
Every system, every interface, every point where data is retyped by hand, documented with a sequence for fixing it.
04
Embedded senior engineering
For regulated teams that need senior capacity without a hiring round.
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Technical lead inside your team
Architecture decisions, code review, delivery discipline.
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Technical due diligence
For investors, acquirers or boards that need an independent read on a codebase.
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Architecture review
A second opinion before a rebuild, a migration or an audit.
Proof: embedded in a German fintech from architecture to daily delivery.
Entry point
Architecture assessment, 2 weeks
A written review of your system’s structure, risks and options, in language both engineering and the board can use.
The four phases
How we work.
Four phases, priced per phase. Each entry point above is the first step of Assess.
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01 2 to 4 weeks
Assess
We find the real problem, the regulatory constraints and the architectural debt before anyone writes a proposal.
→ About Assess -
02 4 to 8 weeks
Architect
A technical blueprint with compliance built into the structure.
→ About Architect -
03 3 to 12 months
Build
Production systems delivered in reviewable increments, with decisions and tests documented as we go.
→ About Build -
04 Ongoing
Evolve
Rules change and markets move; we keep the system current and the documentation with it.
→ About Evolve
Inside every phase we work with the Cross-Proof method.
Next step
Start with the hard part.
Tell us the piece of the system you are least sure about, and you will know whether it can be built, and how.