Hi, I'm Eugene Odhiambo
I aim to spend more time working on systems rather than in systems.
Introduction
Overview.
Software Engineer with 5+ years of experience architecting scalable health-tech platforms, microservices, and event-driven systems across fintech, insurtech, and telecommunications. I specialize in Java and Spring Boot backends, GraphQL and Kafka pipelines, and cross-platform delivery with Flutter and React. I have a strong track record of building high-concurrency transaction systems, integrating complex healthcare and payment APIs, and accelerating release cycles through CI/CD and infrastructure-as-code. I care deeply about engineering quality, observability, and mentoring teams to do their best work.
Backend & Microservices
Web Development
Cloud & DevOps
System Architecture
What I have done so far
Work Experience.
Software Engineer
Safaricom PLC
- Architected and developed secure healthcare financing integration layers for national public health platforms, enabling seamless digital health insurance collections and disbursements for millions of citizens.
- Optimized high-concurrency transaction processing pipelines to handle critical medical care and ensuring atomic operations and sub-second latency for high-volume ecosystem touchpoints.
- Enhanced digital health platform observability by configuring monitoring to track service health across distributed healthcare microservices, drastically reducing transaction failure rates for citizens accessing care.
- Collaborated with regulatory bodies and public sector health stakeholders to ensure all data and pipelines complied with strict medical confidentiality frameworks and national data privacy mandates.
Senior Software Engineer
GRIFFIN Global Technologies
- Established CI/CD pipelines and infrastructure as code using Terraform, reducing deployment time by 50%, improving application stability, and having our infrastructure documented.
- Championed cross-functional collaboration between development, QA, and operations teams, streamlining the SDLC, leading to more efficient and effective software delivery.
- Drove software quality initiatives by designing and implementing automated test suites, increasing test coverage by 37% and reducing manual testing efforts, significantly boosting release confidence.
Senior Software Engineer
Savannah Informatics Limited
- Designed and implemented a high-performance GraphQL federated API gateway to unify decoupled clinical and pharmacy microservices, eliminating data silos and achieving sub-second latency for frontend health applications.
- Led the architectural design and development of a scalable, high-performance digital healthcare provider marketplace, driving 80% growth in system adoption by onboarding 200+ specialized medical clinics and pharmacies.
- Engineered a scalable, low-latency USSD platform to engage 10,000+ oncology and diabetes patients with medication reminders, health tips, and care subscription renewals.
- Co-architected an automated healthcare financing and patient ledger system integrating banking and identity verification APIs, resulting in an 80% reduction in processing errors and claim defaults.
- Authored and executed a comprehensive microservices development and code-quality playbook, mentoring cross-functional engineering teams to enforce clean architecture, strict testing frameworks, and secure data handling standards.
- Collaborated with health data engineers to aggregate distributed event telemetry, creating actionable operational dashboards for clinical and business stakeholders.
Mobile Developer
Octagon Africa
- Developed Android and Flutter applications supporting insurance services and digital onboarding.
- Implemented unit and UI testing, reducing manual testing efforts by 50%.
- Resolved critical crash issues, reducing production failures by 95% and improving application stability.
My work
Projects.
The following projects reflect my work building scalable systems for real-world platforms — from event-driven microservices to multi-tenant marketplaces — with a focus on performance, reliability, and clean architecture.
Jipamba
A beauty booking marketplace built with Java microservices using Spring Boot and Kafka to support multi-tenant, real-time booking workflows.
#spring-boot
#kafka
#java
#microservices