Backend Development

Mara Okafor

Staff backend engineer — payments, ledgers and edge infrastructure

Lisbon, Portugal Europe/Lisbon

01

Profile

I design boring, correct money systems. Ten years shipping payment rails, double-entry ledgers and the observability that keeps them honest.
02

Experience

2021–now · Principal engineer, Lattice Pay — rebuilt settlement on Workers + D1, cut reconciliation from 6h to 4m. 2017–2021 · Senior engineer, Northwind Bank — led the ledger migration to event sourcing.
03

Projects
- ledger-core ↗ Github repo
  
  Double-entry ledger engine for D1 with idempotent postings.
  
  github.com
- Settlement dashboard ↗ Live app
  
  Live reconciliation view processing 2M transactions a day.
  
  settle.example.com
04

Skills
- Data Engineering 8y
- Design Systems 6y
- Docker / Kubernetes 5y
- AWS / Cloud Architecture 4y
- Cloudflare Workers 4y
05

Contact
- LinkedIn linkedin.com/in/mara-okafor-demo
- GitHub github.com/mara-okafor-demo
- Email mara@mycv.im
- Telegram @mara_demo
Direct contact · zero commission

Profile