Sutraq - FinTech Microservices Platform

At Sutraq Technologies, we served as a key backend engineer leading the design and implementation of a comprehensive FinTech solution focused on SME finance and micro-savings for the Middle East market.

Building financial systems requires absolute reliability — transactions cannot fail silently, every action must be traceable, and security is non-negotiable. This experience gave us deep appreciation for mission-critical system design.

We delivered a production-grade platform in a 6-month timeline, with systems designed to handle high-concurrency financial transactions.

What We Built

• Node.js microservices managing financial workflows: loan creation, approval, disbursement, repayment
• Micro-savings modules with real-time contribution and withdrawal tracking
• Robust RESTful APIs integrating with third-party financial services
• Scalable MongoDB clusters for high-concurrency financial transactions

Key Achievements

• Delivered production-grade FinTech platform in 6-month timeline
• Achieved 99.9% uptime for financial transaction processing
• Designed high-concurrency system handling simultaneous transactions
• Implemented robust data security meeting financial compliance standards

Technical Challenges Solved

• Transaction reliability — idempotency keys and MongoDB transactions for atomic operations
• Audit compliance — comprehensive logging for regulatory requirements
• Security hardening — encryption and role-based access control throughout

Backend

• Node.js
• Express
• REST APIs

Data

• MongoDB
• Transactions
• Audit Logging

Frontend

• React

Infrastructure

• AWS EC2
• AWS S3
• AWS Lambda
• Docker
• CI/CD