Fintech Software Development Company

overview

We build software for banks, payment companies, wealth and insurance platforms — and for teams whose product happens to move money and now needs to survive an audit.

Double-entry ledgers, idempotent payment flows, reconciliation, KYC/AML orchestration and hardened operational tooling: the parts that quietly decide whether a fintech product scales or leaks.

Financial systems fail on edge cases: a duplicate webhook, a partial refund, a timezone boundary at month end. We model those states explicitly and prove the behaviour with reconciliation harnesses and property-based tests before launch.

Ledger modelDouble-entry

Payment operationsIdempotent + reconciled

Security posturePCI-DSS aligned

Reconciliation coverage100% of flows

Payment success rate upliftMeasured & tuned

Audit findings on delivered systemsClean track record

case studies

Financial platforms we've built

Investment, payments and ledger projects documented in our case studies, each with security and compliance requirements built in.

Stockosaurus

Equity crowdfunding platform for Canadian investors

A Canadian equity crowdfunding platform with investor registration, KYC identity verification, issuer pages and a secure backend for transactions.

Read the Stockosaurus case study →

Arena Casino

Mobile and web platform for online gaming

Web and native mobile apps with secure payment gateways for deposits and withdrawals across multiple methods, plus backend systems for accounts and transactions.

Read the Arena Casino case study →

VeChain

Blockchain supply chain platform

A blockchain supply chain platform with smart contracts, IoT data capture and an immutable transaction history that speeds up compliance audits.

Read the VeChain case study →

what's included

Payments & ledgers

Double-entry ledger design, PSP integrations, payouts, reconciliation and dispute handling.

Onboarding, KYC & AML

Identity verification, screening, risk scoring and case-management workflows.

Customer & advisor platforms

Banking, wealth and insurance portals, plus internal operations consoles.

Trading & data interfaces

Low-latency dashboards, market data pipelines and reporting.

Digital assets

Custody integrations, on-chain settlement and smart-contract work where it genuinely adds value.

Risk & fraud tooling

Rules engines, ML scoring and analyst workbenches with full decision audit trails.

where it's applied

Typical financial services engagements

Embedded payments

Accepting, splitting and paying out money inside your existing product.

Ledger replacement

Migrating from spreadsheet-and-database accounting to an auditable ledger.

Compliant onboarding

KYC/KYB, sanctions screening and risk scoring with analyst review queues.

Operations consoles

Internal tooling for refunds, disputes, reconciliation and support with strict permissions.

Tokenised assets

Custody, settlement and reporting where on-chain infrastructure earns its place.

Fraud & risk scoring

Real-time rules and ML scoring with analyst workbenches and full audit trails.

why teams pick us

Correctness first

Property-based tests and reconciliation harnesses prove the money maths, every release.

Audit-ready by construction

Immutable logs, segregation of duties and evidence your auditors can read.

Scope-reducing security

We architect card and PII flows to keep you out of the riskiest compliance scope.

Pragmatic on blockchain

We use it where it adds value and say so plainly when a database is the better answer.

Fintech-specific delivery experience

Teams who have shipped ledgers, PSP integrations and KYC flows before, not for the first time.

Load-tested for peak

Payment and trading systems proven under realistic peak-volume scenarios.

buyer guide

How to choose a fintech software development company

Financial software fails on edge cases and audits, not on happy paths. These questions help you compare any fintech software development company, including us.

Ask how they model money

Correct balances depend on design choices made early: a double-entry ledger, idempotent payment handling so duplicates can't double-charge, and reconciliation against provider statements. Ask the vendor to explain how they handle these, in plain language.

How do you prevent a duplicate webhook from moving money twice?
How do you reconcile our records against the bank or payment provider?
How are partial refunds, chargebacks and reversals handled?

Plan compliance scope early: PCI DSS, KYC and AML

Card data, identity checks and anti-money-laundering screening each bring obligations. A good team designs the product to keep card data out of your systems where possible, and builds KYC and AML workflows around specialist verification and screening providers rather than reinventing them. Your compliance team and advisers stay in charge of policy; the software should make that policy enforceable and auditable.

Payment gateway integration is more than an API call

Taking a payment is the easy part. Payment gateway integration services also need to cover webhooks, retries, refunds, disputes, payouts, multiple providers and reporting. Ask how the vendor tests these flows before launch.

Banking and trading platforms need operations tooling

Behind every customer app sits an operations team handling refunds, disputes, reviews and support. Banking software development and trading platform development should include internal consoles with strict permissions and full audit logs, not just the customer-facing screens.

Agree audit evidence and ownership

Ask what documentation and evidence the vendor produces for audits and certifications, and make sure you own the code, infrastructure and data from day one.

tooling

Core

TypeScriptJavaGoPostgreSQLKafkaKubernetes

Payments

StripeAdyenSEPAACHOpen Banking3-D Secure

Compliance

PCI-DSSKYC/AMLSOC 2 readinessGDPRAudit logging

Digital assets

EVM chainsSolidityCustody APIsOn-chain settlement

Risk & fraud

Rules enginesML scoringSanctions screeningCase management

Data & reporting

SnowflakedbtLookerRegulatory reporting

industries served

Banking
Payments & fintech
Wealth management
Insurance
Digital assets

how we run it

01
Money-flow modelling
Every flow, state and failure mode written down before implementation.
02
Controls & architecture
Ledger, audit logging, segregation of duties and compliance requirements designed in.
03
Build & prove
Property-based tests, reconciliation harnesses and load testing against peak scenarios.
04
Launch & operate
Runbooks, alerting, ops tooling and support for audits and certifications.
05
Reconcile & monitor
Continuous reconciliation and anomaly alerting once live.
06
Scale & certify
Capacity growth alongside audits, certifications and new product lines.

questions we get asked

What does a fintech software development company do?

It builds software that moves, records or manages money: payment integrations, ledgers, banking and investment platforms, onboarding with KYC and AML checks, and the operations tools behind them — designed for correctness, security and audits.

Do you build KYC and AML software?

Yes. We build onboarding, identity verification, screening, risk scoring and case-management workflows, integrating specialist verification and screening providers, with every decision logged for review.

Do you build banking software?

Yes. Customer portals, account and transaction views, internal operations consoles and ledger systems, working within your existing compliance program and change management.

Can you build a trading or investment platform?

Yes. We build trading and investment interfaces, market data pipelines and reporting — see our Stockosaurus equity crowdfunding case study for an example of investor onboarding and verification.

Do you still do blockchain?

Yes, as one tool inside financial infrastructure — custody, settlement, tokenised assets — not as a headline. If a database is the right answer, we'll say so.