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Fredrick Wambua

@fredrickwambua

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Site Reliability Engineer at HydroIQ maintaining 99.99% availability for a smart water billing and payments platform.

Kenya

Message

At HydroIQ, I operate cloud infrastructure for a smart water billing and IoT platform that connects M-Pesa, card payments, and online banking. I maintain approximately 99.99% service availability and helped reduce critical downtime by more than 40% through incident management and reliability improvements.

At Airtel Networks Kenya Limited, I managed Airtel Money and sustained 99.95% availability for a platform serving more than 6 million active subscribers. I led more than 200 integrations, including the Government of Kenya Hustler Fund and Airtel Money–M-Pesa interoperability. I’m also building Cheche Technologies, a serverless M-Pesa statement-to-Excel product on AWS provisioned with Terraform.

Experience

Work history, roles, and key accomplishments

Current

Founder & Cloud Engineer

Current

Cheche Technologies

Jan 2026 - Present (10 months)

Building and operating chechetech.co.ke, a serverless M-Pesa statement-to-Excel converter for Kenyan individuals and SMEs. Designed and deployed the production stack on AWS entirely with Terraform, including S3, CloudFront, Lambda, API Gateway, and DynamoDB.

AWS Terraform Lambda API Gateway S3 Amazon Cloudfront DynamoDB Python M PESA Daraja API Compliance

Current

Site Reliability Engineer

Current

HydroIQ

Aug 2023 - Present (3 years 3 months)

Designing and operating cloud infrastructure for a smart water billing and IoT platform integrating M-Pesa, card payments, and online banking across multiple African markets. Maintains ~99.99% service availability and reduced critical service downtime by 40%+ through a 24/7 incident management framework.

AWS Terraform Docker Kubernetes Nagios Prometheus Grafana IoT M Pesa REST APIs Incident Management SRE

IT Manager – Mobile Money

Airtel Networks Kenya Limited

Sep 2016 - Feb 2023 (6 years 5 months)

Owned the architecture, operational management, and strategic evolution of Airtel Money Kenya, serving 6M+ active subscribers and processing 50M+ monthly transactions. Sustained 99.95% platform availability over 6.5 years and led 200+ third-party integrations with banks, merchants, utilities, and government bodies.

Mobile Money API Integration ISO 8583 REST APIs USSD SMPP Oracle Python Incident Management SLA Governance Team Leadership

Lead Implementations & Support Engineer

Comviva Technologies Limited

Nov 2014 - Sep 2016 (1 year 10 months)

Led client-facing implementation delivery for Airtel Money Kenya at Mahindra Comviva, managing merchant and organisation integrations onto mobile money platforms. Coordinated end-to-end integration project delivery including API configuration, testing cycles, defect resolution, and post-launch support.

Mobile Money API Integration Project Management Testing Defect Resolution Client Management

Operations & Support Engineer

Comviva Technologies Limited

Nov 2013 - Nov 2014 (1 year)

Monitored servers, databases, and payment application layers, maintaining high uptime and rapid incident response across mobile money production environments. Translated business requirements into SQL queries and managed database backups and performance tasks.

SQL Database Management Monitoring Incident Response Mobile Money

Level 1 VAS Support Engineer

Comviva Technologies Limited

Mar 2013 - Nov 2013 (8 months)

Configured SMSC/SMPP accounts, SMS routing, MMSC/WAPGW, and USSD services for value-added services across mobile network infrastructure. Conducted system health checks and operational monitoring, handling ticketing and customer issue resolution.

SMSC SMPP USSD MMSC WAPGW Monitoring Ticketing