AI / Machine Learning
AI Resume Analyzer
Resume-scoring web app with automated skill extraction and real-time AI feedback
ReactZustandTailwindNode.jsOpenAI GPT4
available for hire
Davies
Wabuluka
7+ years designing production-grade platforms serving 10,000+ users across fintech, ridesharing, and audit management. Expert in React, TypeScript, Node.js & AWS — delivering measurable impact.
7+ years
10K+ users
$500K+ txns/mo
ReactTypeScriptNode.jsAWSGraphQLReact Native
About Me
Building products that make a real difference
Davies Wabuluka
Dracut, MA
Full-stack engineer with 7+ years designing production-grade platforms serving 10,000+ users across fintech, ridesharing, and audit management. Expert in real-time systems, payment integrations, and AWS architectures with WCAG 2.2 AA standards.
35%
Faster delivery
10+
Devs mentored
99.9%
Uptime
Core Technologies
ReactReact NativeTypeScriptRedux ToolkitApollo ClientTanStack QueryTailwind CSSNode.jsExpress.jsGraphQLWebSocketsMicroservicesAWSDockerKubernetesPostgreSQLMongoDBFirebaseJestTDDCI/CDWCAG 2.1 AA
Education
M.S. Computer Science
Maharishi International University
B.S. Computer Science
Makerere University
Technical Skills
The tools and technologies I use daily
Frontend
12 modules
ReactReact Native (Expo)TypeScriptJavaScript (ES6+)Redux ToolkitZustandApollo ClientTanStack QueryTailwind CSSStyled ComponentsChakra UIShadcn
Backend & APIs
10 modules
Node.jsExpress.jsGraphQL (Apollo Server)REST APIsWebSocketsSocket.IOMQTTMicroservices ArchitectureJWTOAuth
Databases & Real-time
6 modules
PostgreSQLMongoDBMySQLRealmFirebase Realtime DatabaseGraphQL Subscriptions
Cloud & DevOps
5 modules
AWS (EC2, Lambda, S3, CloudFront, RDS, SNS, VPC)DockerKubernetesCI/CD (GitHub Actions, Expo EAS)Terraform
Testing & QA
6 modules
JestReact Testing LibraryTDDStorybookA/B TestingWCAG 2.2 AA Compliance
Work Experience
Companies where I've made an impact
- Led engineering of CPA Audit Tool serving 1,000+ auditors across Uganda, supervising 3 junior developers through structured code reviews.
- Architected Pre-Engagement, Planning, Fieldwork, and Execution modules with AI-powered validation using DeepSeek integration.
- Built ISA-compliant reporting engine with multi-format exports and Regulatory Dashboard for real-time compliance tracking.
- Integrated AWS S3 cloud storage, RBAC security model, and offline-sync capabilities reducing data loss incidents by 90%.
- Delivered 35% faster feature delivery through React best practices and mentoring across the engineering team.
- Engineered accessible, WCAG 2.2 AA-compliant UIs with React, TypeScript, and Styled Components boosting mobile conversion by 28%.
- Re-engineered Node.js file-upload services with AWS S3 pre-signed URLs, improving upload success by 40% for 500MB files.
- Migrated from Context API to Redux Toolkit across 12 feature modules, reducing state-management bugs by 30%.
- Implemented TanStack Query caching and GraphQL query batching, reducing API calls by 35% and saving $2,400/month in server costs.
- Mentored junior developers on design patterns and GraphQL optimization, accelerating team productivity by 45%.
- Scaled mobile platform to 5,000+ active users maintaining 4.6-star rating through performance-optimized React Native architecture.
- Reduced bandwidth consumption by 45% architecting GraphQL API layer with Apollo Server for efficient data fetching.
- Processed $500K+ monthly payments with 20% higher success rate integrating Mastercard Payment Gateway SDK.
- Cut app latency by 35% implementing offline-first caching strategy with Redux Persist and Apollo Client.
- Increased user engagement by 25% building real-time WebSocket notifications with GraphQL subscriptions and AWS SNS.
- Built ride-sharing platform handling 3,000+ concurrent users and 15,000+ MAU with 99.9% uptime using React Native.
- Improved ETA accuracy by 20% integrating Google Maps SDK and Firebase real-time location tracking.
- Reduced executive reporting time by 50% delivering analytics dashboards with React and D3.js visualizations.
- Boosted customer satisfaction scores by 18% implementing Socket.IO real-time chat for driver-rider communication.
- Decreased server response time by 40% optimizing Node.js API endpoints through query optimization and caching strategies.
- Enhanced site performance by 50% customizing WordPress themes with optimized JavaScript and asset compression techniques.
- Enabled 1,000+ concurrent listeners by implementing WebRTC live-streaming functionality with 99% stream reliability.
- Increased organic traffic by 40% redesigning mobile-responsive site with SEO optimization and reduced bounce rate by 25%.
- Improved content delivery speed by 35% implementing CDN integration and lazy-loading strategies across media-heavy pages.
Featured Projects
Products I've built and shipped to real users
Mobile / Education
Kids Learning App
Offline-first education app with context-aware learning paths serving 200+ students
React NativeRealmReduxNode.js
Full-Stack / E-Commerce
Discount Grab
Full-stack e-commerce platform with 40% improved order-processing performance
ReactNode.jsMongoDBAWS
Get In Touch
Available for full-time W-2 roles · Authorized to work in the U.S. without sponsorship · Open to relocate
Ready to build something great?
I'm always interested in new projects and opportunities. Let's discuss how I can help your team.
Send me an emailDracut, MA · Remote, hybrid & on-site · Open to relocate