Looking for a job

Jonathan Farinloye

@jonathanfarinloye

Message

I build resilient, high-volume backend and billing systems with Golang, Python, Temporal, AWS, and PostgreSQL.

Nigeria

Message

What I'm looking for

I'm looking to lead and build scalable, reliable backend systems, especially distributed and revenue-critical infrastructure, while driving technical direction and engineering execution.

At FairMoney, I lead billing infrastructure for revenue-critical financial transactions. I've built distributed Golang and Temporal workflows processing 40K daily transactions at a 98% success rate, while redesigning execution into concurrent, dependency-aware pipelines that reduced latency by 40–50% under load.

I've also built fault-tolerant provider switching, modular billing and refund workflows, and PostgreSQL indexing strategies that reduced latency by 60%. My work focuses on keeping payment systems reliable through outages, high concurrency, retries, and fallbacks.

Previously, I built healthcare platform backends at Heva Health, REST APIs and AWS infrastructure at Onion Inc, real-time game systems at ChessGuru, and backend services across Bookateria and Gourmeal. I also bring DevOps experience from Airtel Nigeria, including CI/CD, disaster recovery, and business continuity systems.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer (Backend) / Team Lead

Current

FairMoney

Feb 2025 - Present (1 year 7 months)

Promoted to Team Lead to stabilize and scale billing infrastructure supporting daily financial transactions. Built and scaled distributed billing workflows using Golang and Temporal, processing 40K daily transactions with 98% success rate.

Go Temporal PostgreSQL Distributed Systems System Design Microservices AWS Redis DynamoDB Terraform Docker GitHub Actions

Backend Engineer

Heva Health

Jun 2024 - Sep 2025 (1 year 3 months)

Designed and built internal healthcare platform backend from scratch in Python, now supporting 1000 active users and daily operational workflows. Architected scalable backend systems handling 5-figure monthly transaction volumes with 99.9% uptime.

Python AWS EC2 S3 VPC IAM Terraform REST APIs System Design Microservices

Backend Engineer

Onion Inc

Sep 2022 - May 2024 (1 year 8 months)

Built and maintained RESTful APIs that improved application performance and supported faster feature delivery. Reduced deployment time by 50% by implementing CI/CD pipelines using GitHub Actions.

REST APIs GitHub Actions AWS EC2 S3 VPC IAM Terraform SQL PostgreSQL

Backend Engineer

ChessGuru

Jun 2022 - Dec 2022 (6 months)

Built real-time backend systems to track game state and notify subscribers within 300ms latency. Integrated Stripe payment systems supporting thousands of dollars in transactions while ensuring accurate tracking and reconciliation.

Real Time Systems Stripe Redis Distributed Cache Framework REST APIs

Backend Engineer

Gourmeal

Mar 2022 - Dec 2022 (9 months)

Developed and deployed REST APIs using Golang, MySQL, and DynamoDB; structured database schemas to optimize data retrieval and improved web app response times by 30%. Implemented Clean Architecture significantly improving modularity and testability.

Go MySQL DynamoDB REST APIs Clean Architecture SQL

Backend Engineer

Bookateria

Oct 2018 - Oct 2021 (3 years)

Built backend APIs using Python, Golang, and PostgreSQL, reducing average response times by 30%. Managed AWS infrastructure EC2, S3, optimizing resource usage while maintaining reliability and security.

Python Go PostgreSQL AWS EC2 S3 Testing Automation Unit Testing Integration Testing

DevOps Engineer

Airtel Nigeria

Sep 2020 - Aug 2021 (11 months)

Built CI/CD pipelines that kept system performance within top-90th-percentile KPI targets. Built disaster recovery and business continuity systems with 10-minute recovery time objectives (RTO) and automated system operations, reducing downtime by 18%.

CI CD Disaster Recovery Automation System Operation