Olakunle I.

Own the end-to-end backend, cloud architecture, and data integrity infrastructure, powering Naira-to-USD conversions, digital savings wallets, settlement flows, and transaction lifecycle management.

Designed and implemented a financial-grade double-entry ledger system using Node.js (Fastify) and TypeScript, ensuring atomic transactions, idempotency, and complete audit traceability across all financial operations.

Architected secure conversion and settlement pipelines handling thousands of daily transactions, with deterministic state transitions and automated reconciliation guarantees.

Built and operated Redis-backed asynchronous processing systems for scheduled savings, auto-conversions exchange-rate updates, and transaction reprocessing, reducing processing latency by 35%.

Designed PostgreSQL data architecture with strict consistency constraints, advanced indexing, and integrity enforcement mechanisms, improving query efficiency by 40% under peak load.

Implemented distributed locking, concurrency control, and transactional safeguards to eliminate race conditions and prevent balance inconsistencies or double-spend scenarios.

Led cloud deployment and infrastructure reliability strategy, ensuring high availability (99.9%+ uptime), observability, and zero-loss transaction guarantees.

Converted the monolithic Laravel backend into a secure, scalable microservices architecture using NestJS and Fastify, significantly improving maintainability and performance.

Designed and implemented an AI-powered media transcoding system to automatically process, compress, and

optimize uploaded images, audio, and videos for performance, storage efficiency, and multi-device delivery.

Developed an intelligent recommendation system that personalizes content, communities, and services for users

based on behavior, engagement patterns, interests, and interaction history.

Implemented advanced wallet system that’s used for transactions and payments of services

Transformed the media system into a well architected and robust media engine to meet up to the social media

industry standard

Moved the whole database architecture from MySQL to PostgreSQL

Improved product speed and performance by implementing Redis Elastic cache system on the codebase

Integrated a secure and robust streaming server to include live streaming as well as audio and video calls using Ant Media Server

Implemented a well secure and scalable WebSocket server using AWS API Gateway for real-time interactions throughout the app

Leveraged on AWS SQS Product and Consumer Service for heavy jobs to be run in the background

Led the mobile team to make use of recent technologies for both the Android and IOS versions

Implement a third-party payment infrastructure to enable seamless payment for users