Maxwell Cofie
Full Stack Engineer & Solutions Architect
Professional Summary
Full Stack Engineer with 5+ years of experience building scalable web and mobile applications serving 10,000+ active users. Specialized in architecting SaaS platforms, event technology solutions, and mobile-first applications across Africa and beyond. Proven track record of reducing development cycles by 40% through strategic technology choices and implementing CI/CD pipelines. Expert in React/Next.js, Flutter, Node.js, and cloud infrastructure with a strong focus on user experience, performance optimization, and agile methodologies.
Key Achievements
- Designed and deployed 15+ production applications with 99.9% uptime across web and mobile platforms
- Led technical architecture for event management platform processing $500K+ in annual transactions
- Optimized database queries reducing API response times from 800ms to <100ms (87.5% improvement)
- Implemented real-time features serving 1,000+ concurrent users using WebSockets and Supabase
- Mentored 5+ junior developers and established code review processes improving code quality by 60%
Professional Experience & Projects
2024 - Present
Lead Engineer & Solutions Architect
First video-powered event discovery and ticketing platform in West Africa, revolutionizing how
people find and attend events.
- Architected and deployed full-stack Next.js application with Supabase backend serving 5,000+ active users
- Built real-time ticketing system with QR code validation processing 10,000+ tickets with zero fraud incidents
- Integrated Paystack payment gateway handling $100K+ in monthly transactions with 99.8% success rate
- Implemented video-first event feeds using adaptive streaming, reducing load times by 65%
- Designed multi-tenant database schema supporting organizers, attendees, and staff with role-based access control
- Deployed CI/CD pipeline with Vercel reducing deployment time from 30 minutes to 3 minutes
2024 - Present
Full Stack Developer
AI-powered decision-making tool helping users instantly choose movies, restaurants, and activities.
- Developed React-based Progressive Web App (PWA) with offline-first architecture reaching 3,000+ monthly users
- Integrated TMDB and Yelp APIs with intelligent caching reducing external API costs by 70%
- Implemented machine learning recommendation engine improving user engagement by 45%
- Achieved Google Lighthouse score of 95+ for performance, accessibility, and SEO
2023 - 2024
Mobile Engineer
Business management platform for tailors to digitize operations, from measurements to delivery
tracking.
- Built cross-platform mobile app using Flutter serving 2,000+ tailors across Ghana and Nigeria
- Implemented offline-first architecture with local SQLite storage and background sync reducing data loss by 95%
- Designed custom measurement input UI achieving 60% faster data entry compared to manual forms
- Integrated Firebase Cloud Messaging for push notifications with 70% open rate
- Published app to Google Play Store and Apple App Store with 4.5+ star average rating
2022 - 2023
Full Stack Developer
AI-powered travel planning assistant generating personalized itineraries for African destinations.
- Developed React SPA with Node.js backend generating 5,000+ custom itineraries for travelers
- Integrated OpenAI GPT-3.5 API for intelligent destination recommendations and trip planning
- Built RESTful API with Express.js handling 50,000+ requests monthly with <200ms average response time
- Implemented Google Maps and Places APIs for location search and route optimization
- Designed PostgreSQL schema with complex queries optimizing for budget-based filtering
Additional Projects Portfolio
2020 - 2022
Freelance Developer
- Amigo Lease - Roommate matching platform built with React and Firebase, connecting 1,000+ users
- Motor Ambos - On-demand mechanic marketplace using location-based services and real-time chat
- Stage & Bloom - Event vendor discovery platform with booking system and payment integration
Technical Skills
Frontend Development
React
Next.js
TypeScript
JavaScript (ES6+)
HTML5 / CSS3
Tailwind CSS
Framer Motion
Redux / Zustand
React Query
Backend & Databases
Node.js
Express.js
PostgreSQL
Supabase
Firebase
MongoDB
REST APIs
GraphQL
WebSockets
Mobile Development
Flutter
Dart
React Native
PWA
iOS / Android
SQLite
Provider / BLoC
DevOps & Tools
Git / GitHub
Docker
Vercel
AWS (EC2, S3)
CI/CD
Figma
Postman
Linux
Additional Competencies
Architecture & Design: Microservices, RESTful APIs, Database Design, System
Architecture, Agile/Scrum Methodologies
Performance: Code Optimization, Caching Strategies, Lazy Loading, Bundle Optimization, Database Query Optimization
Security: OAuth 2.0, JWT, CORS, Input Validation, SQL Injection Prevention, XSS Protection
Payment Integration: Paystack, Stripe, Webhook Implementation, Transaction Management
AI/ML: OpenAI API Integration, Prompt Engineering, Recommendation Systems
Performance: Code Optimization, Caching Strategies, Lazy Loading, Bundle Optimization, Database Query Optimization
Security: OAuth 2.0, JWT, CORS, Input Validation, SQL Injection Prevention, XSS Protection
Payment Integration: Paystack, Stripe, Webhook Implementation, Transaction Management
AI/ML: OpenAI API Integration, Prompt Engineering, Recommendation Systems
Education & Certifications
Computer Science & Engineering
2018 - 2022
Self-taught through online courses, bootcamps, and hands-on project
development
Continuous Learning: Active on freeCodeCamp, Udemy, Frontend Masters • Regular attendee
at local tech meetups and hackathons