Samson Gicheru Njuguna
Nairobi, Kenya
Summary
Senior Frontend Engineer with 6+ years building scalable React/TypeScript applications. Expert in remote collaboration, cloud infrastructure (AWS, Google Cloud), and delivering high-performance solutions. Proven track record leading distributed teams and optimizing applications serving 10,000+ daily users.
Overview
7
7
years of professional experience
Work History
Frontend Engineering Lead
Leta
01.2024 - Current
- Led a distributed frontend team of 5 engineers to build Africa's logistics operating system, delivering 12+ major features across React, TypeScript, and Next.js applications while maintaining 95% sprint completion rate.
- Architected and implemented scalable micro-frontend architecture that improved page load times by 40% and reduced bundle size by 35%, handling 10,000+ daily active users.
- Designed and integrated 15+ RESTful and GraphQL APIs with backend teams, automating 60% of manual logistics workflows and reducing order processing time from 4 hours to 45 minutes.
- Built comprehensive delivery zone management system with MapBox integration, enabling real-time polygon drawing and zone calculations that increased delivery accuracy by 28%.
- Developed driver management dashboard with bulk operations handling 500+ drivers, reducing administrative overhead by 3 hours daily.
- Established code quality standards and CI/CD pipelines using GitHub Actions, reducing production bugs by 45% and deployment time from 2 hours to 15 minutes.
- Deployed and managed frontend infrastructure on AWS (S3, CloudFront, Lambda@Edge) and monitored application performance using Google Cloud Console, maintaining 99.7% uptime.
- Mentored 3 junior engineers through pair programming and code reviews, improving team velocity by 25% within 6 months.
- Collaborated asynchronously with cross-functional teams via Slack and Google Workspace, maintaining clear documentation and reducing meeting time by 30%.
- Optimized React component library with 50+ reusable components, reducing development time for new features by 40%
Frontend Engineer
Ramtons
01.2023 - 12.2023
- Built and launched Ramtons Marketplace e-commerce platform using React.js and TypeScript, achieving 15,000+ monthly active users within 6 months.
- Implemented responsive UI components that improved mobile conversion rates by 22% and reduced cart abandonment by 18%.
- Optimized product catalog pages with lazy loading and code splitting, improving load times by 50% (from 4.2s to 2.1s).
- Developed reusable component library of 30+ components, accelerating feature delivery by 35%.
- Integrated with backend APIs and payment gateways, processing 5,000+ transactions monthly with 99.9% success rate.
- Deployed frontend assets to AWS S3 with CloudFront CDN, reducing page load times by 60% for international users.
- Collaborated with remote product and design teams via Slack and Google Meet, delivering 8 major releases on schedule.
- Maintained development documentation in Google Workspace, improving team knowledge sharing and onboarding efficiency by 40%
Frontend Engineer
Sky Garden
01.2019 - 11.2022
- Developed and launched marketplace platform serving 2,000+ African SMEs, facilitating $500K+ in monthly transactions.
- Implemented Redux.js state management architecture supporting 50+ interconnected components, reducing state-related bugs by 65%.
- Built Next.js-based seller onboarding flow that decreased time-to-first-sale from 7 days to 2 days, improving seller retention by 30%.
- Optimised mobile-first experience achieving 4.2/5 user satisfaction score and 85% mobile traffic conversion.
- Developed 40+ responsive React components with cross-browser compatibility (Chrome, Safari, Firefox, Edge), ensuring consistent experience for 95% of users.
- Collaborated with remote engineering teams across 3 time zones using Slack, Jira, and Google Workspace, maintaining sprint velocity of 85%.
- Implemented performance optimizations including code splitting and lazy loading, improving Core Web Vitals scores by 45%.
- Utilised AWS services (EC2, S3, CloudWatch) and Google Cloud Console for deployment monitoring and debugging, reducing incident response time by 50%.
- Conducted code reviews for 5 team members, maintaining 90% code coverage through Jest and React Testing Library.
- Managed version control via Git with GitFlow workflow, handling 200+ pull requests with zero critical production incidents.
Education
Bachelor - Business Information Technology
KCA University
Nairobi, Kenya11.2014
Skills
- Reactjs
- React Hooks
- TypeScript
- JavaScript (ES6)
- Nextjs
- Vuejs
- Vuex
- Vue Router
- HTML5
- CSS3
- Reduxjs
- State Management
- Responsive Web Design
- Component Libraries (Ant Design, Material-UI, Vuetify)
- Styled-components
- Mobile-First Development
- Cross-Browser Compatibility
- Design Systems
- UI Pattern Libraries
- RESTful APIs
- GraphQL
- API Design
- Asynchronous Data Handling
- Real-time Data Updates
- Payment Gateway Integration
- AWS (S3, CloudFront, Lambda@Edge, EC2, CloudWatch)
- Google Cloud Console
- CI/CD Pipelines (GitHub Actions)
- Docker
- Version Control (Git, GitFlow)
- Deployment
- Monitoring
- Code Splitting & Lazy Loading
- Bundle Size Optimization
- Performance Monitoring
- Web Vitals Optimization
- Caching Strategies
- Lighthouse Audits
- Jest
- React Testing Library
- Unit Testing
- Integration Testing
- Code Review Best Practices
- Test-Driven Development
- TDD
- Slack
- Google Workspace (Docs, Sheets, Meet)
- Jira
- Agile
- Scrum
- Asynchronous Communication
- Technical Documentation
- Team Leadership
- Mentorship
- Cross-functional Collaboration
- Technical Architecture Design
- Code Quality Standards
- Stakeholder Communication
- Problem Solving
- Debugging
Timeline
Frontend Engineering Lead
Leta
01.2024 - Current
Frontend Engineer
Ramtons
01.2023 - 12.2023
Frontend Engineer
Sky Garden
01.2019 - 11.2022
Bachelor - Business Information Technology
KCA University
Core Skills
- Frontend Architecture & System Design.
- UI/UX & Design Implementation.
- API Integration & Data Management.
- Cloud & DevOps.
- Performance & Optimization.
- Mapping & Geospatial Tools.
- Testing & Quality Assurance.
- Remote Collaboration & Project Management.
- Leadership & Soft Skills.