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Double-entry ledger service for escrow payments
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Project basics
Project title
*
Category
Design
Frontend Development
Backend Development
Mobile Development
Data Science
DevOps
Writing
Motion Design
Marketing
Product Management
Description
We need an experienced backend engineer to design and build an immutable, double-entry ledger that records escrow funding, milestone releases, refunds, and platform fees. The service must be idempotent, auditable, and reconcilable. Deliverables include the schema, transaction APIs, idempotency handling, and a reconciliation report. Strong PostgreSQL and payments background required.
Required skills
Product Design
Figma
Design Systems
Data Visualization
UX Research
Node.js
TypeScript
React
Next.js
PostgreSQL
GraphQL
Tailwind CSS
Flutter
Dart
Swift
iOS
Firebase
Python
Machine Learning
MLOps
Budget & timeline
Project type
Fixed price
Hourly rate
Min budget ($)
Max budget ($)
Expected duration
Less than 1 week
1–4 weeks
1–3 months
3–6 months
6+ months