Bank API, AEPS & fintech integration developer
Bank and payment APIs are strict: encrypted payloads, signed requests, UAT certification and no room for silent failures. This is work I do regularly.
What you can hire me for
Bank batch APIs
Beneficiary registration, enquiry and bulk payout flows.
AEPS platforms
Owner dashboards, agent flows and transaction backends.
Encryption layers
AES-256-GCM payloads, HMAC-SHA256 signatures and key handling.
Reconciliation
Status enquiry jobs, logs and reports that match bank records.
Built by one developer, end to end
Fintech integrations fail in the details: byte encodings, IV handling, timestamp formats and error codes the documentation barely explains. I have worked through these with banks in UAT and know where they usually break.
I have been building production software for more than ten years for legal, HR, fintech, healthcare and media businesses. You speak directly with me from the first call to launch, and the code, servers and accounts stay in your name.
- Free 30-minute discovery call
- Written scope and fixed quote or hourly estimate
- Weekly demo links while I build
- Full source code and documentation at handover
Projects using this service
Bank batch-payment integration
Beneficiary request and enquiry flows with AES-256-GCM encryption and HMAC-SHA256 signing, from UAT to go-live.
Read case study →FintechAEPS & payments dashboard
Platform-owner dashboard and backend for a payments product, containerised and deployed with Coolify.
Read case study →Common questions
Do you sign an NDA for banking work?
Yes, always, before any documents are shared.
Can you work with our bank's UAT environment?
Yes. I build and test against UAT first, then help with production go-live.
Which languages do you use for bank integrations?
Mostly PHP and Node.js, matching whatever your platform already runs.
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