Hi there, I'm
Samuel Munyi
Senior Full-Stack Engineer
5+ years building and scaling production web applications with React, TypeScript, Node.js, and cloud infrastructure. Passionate about clean code, great UX, and solving real-world problems.
Portfolio
Featured Projects
2021Morning Dew
Stripe-integrated room booking platform with responsive frontend and robust backend. Implements user authentication, authorisation, and a seamless booking flow.
2023DocBooker
Full-stack doctor appointment booking app. REST APIs, Redux state management, and an accessible UI backed by a Ruby on Rails API with PostgreSQL.
2022ZIDI
A code-sharing platform providing clean, universally acceptable backend code snippets in all major languages. Productivity tool built for backend developers.
2023Crypto Metrics
Mobile-first app showing live cryptocurrency pricing and market activity. Focused on performance, accessibility, and real-time data from the Blockchain API.
2024Rental Property Manager
Multi-tenant property management platform for Kenyan landlords. Features tenant management, automated lease tracking, M-Pesa STK push rent collection, maintenance requests, and a revenue analytics dashboard.
2025Kazi Resume Builder
AI-powered resume builder with 4 professional templates including an East African CV. Features AI skills tailoring, PDF import, direct AI editing via Claude Haiku, job application tracker, and Paddle + M-Pesa billing.
2024Lending System
Microfinance lending management system supporting loan origination, repayment schedules, and M-Pesa disbursements. Serves multiple institutions across Kenya.
Expertise
Skills & Technologies
My Journey
Experience & Education
Work Experience
Senior Software Engineer
Oct 2023 – PresentSimplepay Capital Ltd · Onsite
- ›Rebuilt legacy lending system using TypeScript, Hono, and Next.js, improving performance and maintainability.
- ›Enhanced Uganda Customer ID Verification by integrating Airtel & MTN KYC and AI-powered OCR for national ID extraction.
- ›Implemented AI-assisted duplicate image detection using Hamming distance, reducing fraud-related submissions.
- ›Built and deployed a scalable B2C loan disbursement service with smart retry logic, fully resolving double-disbursement issues.
- ›Automated pending-loan handling workflows, significantly reducing administrative intervention.
- ›Integrated MTN and Airtel interactive shortcodes in Uganda for fast repeat-loan requests.
- ›Engineered a high-capacity bulk SMS service for large-volume customer communications.
- ›Designed cross-regional backend infrastructure for disaster recovery across multiple geographic locations.
- ›Enforced production access controls: MFA for all server access, secure SSH key management, and TOTP/email-based 2FA.
- ›Assisted in setting up CI/CD using GitHub Actions, streamlining deployments and reducing manual intervention.
- ›Developed customer-facing cross-platform mobile application using Flutter (iOS & Android).
System & Software Developer
Jul 2021 – Oct 2023Truweb Solutions · Remote
- ›Improved lending SaaS reliability, performance, and security across multiple microfinance companies, reducing incident reports by 30%.
- ›Engineered and implemented monitoring solutions for backend services using Node.js, improving system uptime.
- ›Managed deployments and troubleshot production issues to ensure seamless system updates with minimal downtime.
- ›Collaborated with cross-functional teams to diagnose and resolve critical production issues in real-time.
Software Developer
Aug 2022 – Apr 2023Microverse · Remote
- ›Honed advanced troubleshooting and code quality through 800+ hours of intensive pair programming and peer code reviews.
- ›Built and deployed several full-stack applications using React and Ruby on Rails.
IT Support & Assistant Accountant
Feb 2019 – Aug 2019Raven Property Management · Nairobi, Kenya
- ›Network troubleshooting, computer configuration, and IT support.
- ›Data entry and record management for rental and accounting data.
- ›Filling monthly and annual returns.
Education
DevOps Training — AWS Certification
Nov 2025Geek for Geeks
Cloud infrastructure and DevOps practices on AWS.
Professional Full-Stack Software Development
2023Microverse Training Program
JavaScript, React, Ruby on Rails, PostgreSQL, Git, TDD — 800+ hours of pair programming.
B.Sc Computer Science
Sept 2014 – Sept 2018Kenyatta University
Graduated with Second Class Upper Division.
More About Me
- ›Familiar with Linux tools and desktop environments (Ubuntu)
- ›Open source contributor and personal project builder
- ›Interested in Vanilla CSS frameworks and DX tooling
- ›Remote-first · EMEA timezone (Nairobi)
Who I Am
About Me
Senior Full-Stack Engineer · Nairobi, Kenya
A results-driven full-stack engineer with over five years of experience building and scaling production web applications, specialising in React, TypeScript, Node.js, and cloud infrastructure. Highly adept at owning features from database to UI, making proactive product decisions, and refactoring legacy code for high-output startup environments.
I've delivered freelance projects for startups, contributed to open-source tools, and continuously sharpen my skills through real-world challenges. I enjoy working across the entire stack — from pixel-perfect UIs to robust, scalable backend services.
Ubuntu user · Remote-first · EMEA timezone · Open to global opportunities.
5+
Years Experience
10+
Projects Built
15+
Technologies
🌍 Nairobi
Based In