Production fintech platform

CASH Super App

A production fintech super app supporting electronic money, digital payments, card-related services, accounts, transfers, and secure financial operations.

FlutterDartKotlinAndroidBackend Services

My role

Full Stack Engineer at OCTA, working within a lean team of three engineers and contributing across product features, backend services, architecture, deployment decisions, and technical trade-offs.

Contributions

  • Build and evolve production workflows involving sensitive financial data and money movement.
  • Contribute to secure and reliable features across accounts, transfers, payments, cards, and service integrations.
  • Take ownership of high-impact functionality in a small engineering team where product and technical decisions are closely connected.

Production context

Production platform developed for real financial operations, where reliability, security, usability, and correct data handling are critical.

Some commercial source code is confidential. This case study describes responsibilities and technical contributions without exposing proprietary implementation details.

Discuss this work

I can provide more context about product constraints, architecture decisions, and delivery responsibilities.