GODELIAN

Service — fintech app development

Fintech app development, secure by architecture.

Fintech app development means building software that moves or tracks money — payments, payouts, lending intake, financial dashboards, or ledgers — where security, accuracy, and an audit trail are non-negotiable. Godelian builds fintech MVPs on Next.js and Supabase with Stripe (including Connect payouts and webhook-driven reconciliation), server-side handling of sensitive data, row-level security, and append-only audit records — scoped to a provable first version and shipped in weeks.

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100%
Job Success Score on Upwork
Top 1%
Expert-Vetted on Upwork
5.0★
Average rating
$1.5M
VC funding raised

Fintech is unforgiving about two things: correctness and trust. A referral payout system, a lending intake desk, or a trust ledger can't afford silent data loss or a permission that leaks the wrong account's balance. That's an architecture problem, not a feature you add later.

Godelian builds these with the guardrails in from day one: idempotent, event-driven handling so a failed webhook is recoverable without double-paying; deterministic calculation code (not AI guesswork) for anything involving money; append-only ledgers where corrections are offsetting entries, never deletions; and row-level security so each party sees only their own financial data.

The deterministic arithmetic stays in code; where AI helps — extracting figures from documents, drafting correspondence — it produces drafts a human approves, with every call logged. Secure server-side handling of bank and payment details is the default, never client-exposed.

What clients say

We initially wanted to build our commercial real estate lending MVP with a no-code platform, but Andrew recommended a fully coded solution — and it made all the difference. The product runs fast, scales better, and we fully own the code.

Founder, CRE lending platform — 5.0★ Upwork review

Relevant work

Creaitivly

Commercial-real-estate lending intake — structured submission queue, document processing, and export workflows for a regulated financing process.

Darkmist

Insurance underwriting from document intake to risk decision — OCR pipelines and risk scoring built for an accountable, auditable workflow.

Nexus Medical Network

Stripe billing and payouts across independent organisations, with role-based access and multi-tenant isolation.

fintech app development — questions

How much does fintech app development cost?

A secure fintech MVP at Godelian typically costs $15–30k. Payments, payout logic, and audit trails are scoped into a first version that handles the core money movement correctly, then extended as volume and compliance needs grow.

How do you keep a fintech app secure and compliant?

Sensitive data is handled server-side only and never exposed to the browser; permissions are enforced at the database with row-level security; every money movement, document access, and login is logged to an append-only audit trail; and financial calculations run as deterministic code, not AI inference. The architecture is built to be defensible from day one.

Can you integrate Stripe payments and payouts?

Yes — Stripe Billing for subscriptions and Stripe Connect for onboarding and routing payouts, with idempotent, webhook-driven reconciliation so the platform's records stay correct even when a webhook fails. This has been shipped across several client platforms.

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