Open to opportunities

Mr Mboya

@mrmboya

Message

I build production backend systems for payments, multi-tenant SaaS, and real-time operations.

Kenya

Message

What I'm looking for

I'm looking for a full-time remote backend role with an async-first distributed team, building reliable production systems for EU, UK, or global customers.

I've built production backend systems for fintech, e-commerce, and SaaS clients through ELS Software Solutions, handling real-time financial transactions from schema design through deployment and incident response.

I build high-concurrency APIs with Python, FastAPI, Go, and Gin, and have delivered idempotent M-Pesa payments, multi-tenant RBAC, PostgreSQL performance improvements, Redis caching, and secure JWT/OAuth2 authentication. On StylerStack, Redis cache-aside reduced average API latency by approximately 40% under peak load while idempotency keys and atomic upserts prevented duplicate charges.

I'm currently building Mezani, a multi-tenant Restaurant OS for QR ordering, kitchen queues, staff management, and multi-location reporting. Its Zuri assistant uses Groq-powered LLM services to turn live order data into operational summaries and menu recommendations, while WebSockets and Redis Pub/Sub deliver kitchen events in under 200ms.

I've also built cloud-native analytics and ETL systems on GCP, including Cloud Run, Cloud SQL, Pub/Sub, BigQuery, Cloud Storage, Airflow, and Spark. I work comfortably in async, remote-first teams, using clear API contracts, structured handoffs, and reproducible incident documentation.

Experience

Work history, roles, and key accomplishments

Current

Backend Engineer & Founder

Current

ELS Software Solutions

Jan 2022 - Present (4 years 7 months)

Architected and owned production backend systems processing real-time financial transactions across fintech, e-commerce, and SaaS verticals. Built high-concurrency REST APIs in Go and Python, optimized PostgreSQL performance, and designed multi-tenant data isolation with JWT/OAuth2 and Row Level Security.

Python Go fastAPI Gin PostgreSQL Redis GCP Docker JWT RBAC REST APIs OpenAPI Webhooks

Freelance Backend Engineer

Independent Clients

Jan 2018 - Dec 2022 (4 years 11 months)

Delivered backend systems for fintech, logistics, and SaaS clients remotely, owning the full lifecycle from API contract to production handoff. Integrated M-Pesa Daraja, Google Maps, Firebase Auth, and FCM across multiple projects.

Python Go fastAPI PostgreSQL Redis M Pesa Google Maps

Backend Engineer

StylerStack

Built a microservices backend for a fashion e-commerce platform, handling order catalogue, cart state, fulfilment, and vendor management. Integrated M-Pesa Daraja with idempotency keys and webhook validation, and implemented Redis caching to reduce API latency by ~40%.

fastAPI PostgreSQL Redis Docker GitHub Actions JWT RBAC M Pesa OpenAPI

Backend Engineer

Restaurant Analytics Platform

Designed and deployed a cloud-native analytics platform on GCP, including a Go REST API on Cloud Run, event-driven analytics with Pub/Sub and BigQuery, and AI-generated operational insights. Implemented CI/CD with GitHub Actions and secure cloud storage access.

Go Gin PostgreSQL Cloud Run Cloud SQL Pub Sub BigQuery Cloud Storage GitHub Actions OpenAI API Docker

Data Engineer

Retail Data Pipeline

Built an end-to-end ETL pipeline for a retail client using Airflow, Spark, and BigQuery, eliminating manual reporting. Containerized Spark jobs with Docker and scheduled daily Airflow DAGs with alerting and retry logic.

Airflow Apache Spark BigQuery GCS Docker GCP ETL

Backend Engineer

Mgari

Developed a car rental and fleet booking engine with atomic vehicle reservations using SELECT FOR UPDATE locking. Implemented Redis rate limiting and session caching, and integrated Google Maps API for live vehicle geo-tracking.

fastAPI PostgreSQL Redis Google Maps APIs

Backend Engineer

Mezani

Building a production multi-tenant Restaurant OS covering the full order lifecycle, including QR ordering, kitchen display queues, and multi-location reporting. Integrated LLM for operational summaries and real-time kitchen updates via WebSockets and Redis Pub/Sub.

Go PostgreSQL Redis WebSockets fastAPI LLM Docker Render Supabase JWT RBAC

Backend Engineer

Health Insurance Disbursement System

Built a multi-party payment disbursement backend for county-level health insurance with RBAC across four roles. Implemented QR-code eligibility verification using short-lived RS256-signed JWTs to prevent replay attacks.

fastAPI PostgreSQL JWT RBAC