Danson Omondi Abuya

Full Stack Developer

Over 4 years delivering end-to-end enterprise applications. Strong in Java Spring Boot, Node.js, React, Next.js, and React Native—building API-driven, secure, and high-performance solutions.

DA

Quick facts

Nairobi, Kenya

4+ years experience

Technical Lead · Zimasa Health

About Me

Background and expertise

Full Stack Developer with over 4 years of experience delivering end-to-end enterprise applications. Strong expertise in Java Spring Boot, Node.js, React, Next.js, and React Native—building API-driven, secure, and high-performance solutions.

Skilled in Agile methodologies, DevOps pipelines, SIT/UAT testing, and enterprise system support. Proven ability to lead teams, conduct code reviews, and deliver business-impacting solutions. Fluent in English and Kiswahili.

I focus on security best practices, code quality, and end-to-end project ownership—from requirements and design through deployment and production support.

Expertise

  • Frontend: React, Next.js, React Native, Angular, Flutter, JavaScript, jQuery, HTML5, CSS3, Bootstrap, Tailwind CSS, Ajax, Capacitor, Jetpack Compose
  • Backend: Java Spring Boot, Node.js, ExpressJS, PHP, Firebase, RESTful API design & integration
  • Databases: SQL Server, MySQL, PostgreSQL, database design
  • DevOps: Git, GitHub Actions, Jenkins, Docker, Agile workflows, Google Analytics

Featured Projects

Selected work and side projects

BiasharaHub

Most SMEs tend to sell through social media (e.g. WhatsApp), but operations remain manual. BiasharaHub transforms WhatsApp into a fully automated commerce platform: orders, payments, inventory, and delivery are handled in one system—so businesses can operate smarter, serve customers faster, and scale with confidence.

ReactNext.jsJavaJava Spring BootPostgreSQLM-PesaWhatsApp
View Project

RentalHub

Property rental management system with booking management, tenant coordination, payment tracking, maintenance scheduling, M-Pesa integration, and WhatsApp notifications.

Next.jsJavaJava Spring BootPostgreSQLM-PesaWhatsApp
View Project

Zimasa Payer Solution

Comprehensive insurance solution system enabling seamless interactions between Insurance/TPA, Providers, and Employees. Features claims processing, policy management, real-time transaction monitoring, and integrated financial reporting for efficient healthcare ecosystem management.

ReactJavaJava Spring BootMySQL
Proprietary

Zimasa Engagement Solution

Employee wellness engagement platform promoting health and well-being. Enables individuals and employees to access wellness resources, participate in health challenges, track wellness activities, and receive personalized recommendations for improved work-life wellness.

Next.jsJavaJava Spring BootMySQLTailwind CSSWebSocket
Proprietary

Zimasa Member App

Mobile-first member management application with profile management, membership tracking, benefits access, and personalized member experiences.

React NativeViteJavaScriptJavaJava Spring BootMySQL
Proprietary

TakaTrack

Waste collection and management system enabling efficient scheduling, route optimization, real-time tracking, and reporting for municipal and private collection services.

ReactNode.jsJavaJava Spring BootPostgreSQLGoogle Maps APIFCMWhatsAppSMS
View Project

Mkulima Pro

Smart farming platform connecting smallholder and commercial farmers with agricultural advisory, financing, market access, and logistics solutions—all in one place.

Next.jsReactTypeScriptTailwind CSSJavaJava Spring BootAI
View Project

LedgerHive

Smart Credit & Collections Platform for SMEs. Enterprise-grade collections management with credit scoring, payment tracking, and streamlined recovery workflows.

ReactNext.jsTypeScriptPostgreSQLJavaJava Spring BootAIWhatsAppSMS
View Project

Skills & Expertise

Technologies and practices

Frontend

  • React
  • Next.js
  • React Native
  • Angular
  • Flutter
  • JavaScript
  • jQuery
  • HTML5
  • CSS3
  • Bootstrap
  • Tailwind CSS
  • Ajax
  • Vite
  • Capacitor
  • Jetpack Compose

Backend

  • Java
  • Java Spring Boot
  • Node.js
  • ExpressJS
  • PHP
  • Firebase
  • RESTful API design
  • MySQL
  • PostgreSQL
  • SQL Server

Tools & DevOps

  • Git
  • GitHub Actions
  • Jenkins
  • Docker
  • Agile workflows
  • AWS
  • Vercel
  • Google Analytics
  • SIT/UAT Testing

Other

  • Code reviews
  • Security best practices
  • System deployment
  • End-to-end project ownership
  • Team leadership
  • Mentoring

Work Experience

Roles and responsibilities

Technical Lead & Full Stack Developer

Current

Zimasa Health

Delivering end-to-end solutions for three applications: Zimasa Payer Solution (client-facing, in use by a client and three networks), Zimasa Member App (companion for client networks), and Zimasa Engagement Platform (in demo for providers, payers, and consumers). Tech stack: Java Spring Boot (backend), React & Next.js (web), React Native (mobile). Built API-driven architectures for fast, reliable, secure communication. Conduct peer code reviews; lead SIT/UAT testing, deployment, and production support. Collaborate with cross-functional teams on requirements, design, and implementation aligned with business goals.

Software Engineer

Previous Position

Turnkey Africa

Developed full-stack features using React, Angular, and backend services. Worked on database queries, API integration, and production-ready applications. Collaborated with internal IT teams to resolve technical dependencies and ensure smooth delivery.

ICT Intern

Previous Position

Kenya Revenue Authority (KRA)

Assisted in the development and maintenance of enterprise IT systems. Participated in asset tagging of IT and office assets using specialized software and devices, ensuring accurate inventory tracking. Gained exposure to structured development processes and enterprise-grade systems.

Software Development Intern

Previous Position

Sedatech Company Limited

Participated in software development projects and strengthened full-stack technical skills.

Education & Certifications

Academic and professional development

Bachelor of Science in Computer Science

Chuka University · 2018 – 2022 · Second Class Honours (Upper Division)

Professional Certifications & Training

  • CCNA 1, 2, 3 · Google Project Management · Google IT Support
  • AWS re/Start · Cisco DevNet · Cisco CyberOps · ALX Cloud Computing

Get in touch

Nairobi, Kenya. Open to new opportunities and collaborations.