Money systems are judged on the day they disagree.
Every financial system is fine until two records disagree about a balance. What separates a serious build from a fragile one is entirely in how that case is handled: whether the ledger is append-only, whether an operation can be replayed safely, whether you can reconstruct what a balance was at a point in the past. None of that is visible in a demo, and all of it decides whether the product survives its first year.
The problems that are specific to this sector.
Correctness is not a feature
A double-entry ledger, idempotent operations, and reconciliation that runs on a schedule rather than when someone notices. Bolting these on after launch means migrating live balances, which is the worst migration there is.
Onboarding is where users are lost
KYC and AML checks are non-negotiable and they are also the highest-drop-off screen in the product. The engineering problem is passing the check while asking as little as possible, as late as possible.
Fraud arrives before scale does
Rules and monitoring are needed from launch, not from the point where losses are material. By then the patterns are established and the chargebacks are historical.
What we build for fintech
- Payment flows on Stripe, Adyen or direct rails, with idempotency and retries designed in
- Double-entry ledgers, reconciliation jobs, and reporting that ties out to the penny
- KYC, AML and onboarding flows integrated with the providers you already use
- Fraud rules, monitoring and case management for the team that reviews flagged activity
- Customer, partner and back-office portals with real permissions and a full audit trail
What shapes the build
Requirements we design against in this sector. These describe obligations that apply to systems like yours — they are not claims that we hold a certification.
- PCI DSS scope, which is mostly reduced by never touching card data directly, since tokenisation and hosted fields keep the scope small deliberately
- KYC and AML obligations, which shape onboarding, record retention and what has to be reviewable years later
- SOC 2 and enterprise security review, which enterprise customers ask about long before any regulator does
- Strong Customer Authentication and PSD2 where you operate in Europe or take European cards
The engagements this usually begins with.
Each says who it is for and, more usefully, who it isn't.
Custom SaaS Development
Multi-tenant platforms built to hold up under real customers, real load, and real compliance requirements.
What this involves ›Cybersecurity Services
Finding what an attacker would find first, fixing it, and leaving you with the evidence your customers ask for.
What this involves ›ML & Data Science
Forecasting, scoring and segmentation on your own data, with the pipeline that keeps it accurate after launch.
What this involves ›IT Infrastructure
Cloud that is sized for what you run, backed up in a way that has actually been restored, and cheaper next quarter.
What this involves ›Work we've done in fintech.
When two systems disagree about a balance
A payments business grows until the month end reconciliation between its own records, its processor and its bank stops fitting into a spreadsheet. A double entry ledger with scheduled reconciliation turns that from a monthly investigation into an exception queue.
Read the case study ›The compliance screen people give up on
Identity and anti money laundering checks are not optional, and the screen that runs them is reliably the biggest drop off in a financial product. Reordering what is asked, and when, recovers a meaningful share of applicants without weakening a single control.
Read the case study ›The ones this sector actually asks.
Do you handle card data directly?
We design systems so that you do not have to, which is the single largest reduction in PCI scope available. Tokenisation and hosted payment fields keep raw card numbers out of your infrastructure entirely, and the architectures that require otherwise are rare and specialist.
Can you build on an existing ledger?
Often, and we read it before quoting. If the honest answer is that the current ledger cannot represent the cases you need, we will say so. That is a bad thing to discover during a reconciliation dispute.
Are you a regulated entity?
No. We are an engineering partner, not a licence holder, and the regulatory permissions stay with you or your sponsor bank. What we do is build systems that meet the technical obligations those permissions carry.
What is the most expensive thing your team still does by hand?
Tell us, and we'll tell you honestly whether software can fix it, and roughly what it would cost. No pitch deck.