Founder Experience
ProductionDiba Fintech Platform
Backend engineering for Diba's production fintech platform, covering wallet transactions, payment processing and real-time customer support.
Industry
Fintech
Role
Backend Engineer
Period
2025-Present
Services involved
This is founder experience, not a CharisForge client engagement. Andrew worked on this as backend engineer, before or during CharisForge’s formation.
01 · Context
What the platform needed.
Diba operates a live fintech platform handling customer wallets and transactions. Fintech systems carry a different bar than most software: transaction handling has to be correct every time, APIs need to be predictable for the teams and partners building on them, and customer-facing functionality like support needs to work in real time.
02 · Engineering challenge
What made the work meaningful.
Wallet operations and payment workflows needed secure, consistent handling under real usage, authentication and API design had to hold up for other teams integrating against them, and the platform needed real-time in-app support so customers could get help without leaving the product.
03 · Contribution
What Andrew worked on.
Andrew worked as a backend engineer on Diba's platform, contributing to wallet transaction handling, payment workflows, secure API design and authentication, and a real-time in-app support chat feature. The engagement went well enough that the same team brought him back for a second, larger platform, the 10Billion NGO backend described below.
04 · Engineering approach
How it was built.
Wallet and transaction logic was built with Django and PostgreSQL, with Redis backing the real-time support chat so messages stayed fast under concurrent load. API endpoints were secured with JWT-based authentication, and payment workflows were integrated against external payment APIs with an emphasis on predictable, well-defined request and response contracts other engineers could build against.
05 · Key capabilities delivered
What shipped.
- Wallet transaction system and transaction processing
- Payment workflow implementation and payment API integration
- Secure API design with JWT authentication
- Real-time in-app customer support chat, backed by Redis
- PostgreSQL data modeling for financial records
06 · Technologies
07 · Outcome
What it delivered.
- Wallet and transaction workflows running in production.
- Secure, predictable APIs for internal and partner integration.
- Real-time in-app support live for customers.
- The relationship continued onto a second, larger engagement (10Billion).
08 · Experience brought forward
What this experience brings to CharisForge.
Fintech doesn't forgive sloppy transaction handling or unpredictable APIs, and that standard is exactly what CharisForge applies to every backend, fintech or not: treat correctness-critical paths as correctness-critical, and design APIs the way you'd want to consume them yourself.
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