🏆100% job success score. 🏆TOP RATED PLUS ( 3% of talent on Upwork) specializing in Mobile Applications Development targeting iOS and Android platforms using Native and Hybrid (React Native, Cordova & Flutter) approach.
Node.js
JavaScript
Hybrid App Development
React Native
Objective-C
Swift
Android App Development
iOS Development
Mobile App Development
User Profile Creation
Java
Kotlin
Flutter
RxSwift
Git
Norbert G.
Nairobi, Kenya
$40/hr
4.6
59 jobs
I’m a Senior Full-Stack Engineer with extensive experience building reliable, scalable web applications from the ground up. I help clients turn complex ideas into production-ready systems that are fast, maintainable, and built to last.
I specialize in working across the stack — from well-designed backend APIs and data models to clean, responsive front-end interfaces — with a strong emphasis on code quality, performance, and real-world reliability.
What I bring to your project:
1. Backend expertise: Node.js, TypeScript, REST APIs, background jobs, data synchronization, third-party integrations
2. Frontend expertise: modern JavaScript frameworks, clean UI architecture, responsive and user-friendly interfaces
3. System design: scalable architectures, clear API contracts, and maintainable codebases
4. Problem-solving: breaking down ambiguous requirements, handling edge cases, and delivering practical solutions
5. Ownership: I take responsibility for features end-to-end, not just isolated tasks
I’m particularly strong at projects that require:
- Integrating multiple services or APIs
- Handling complex business logic or data flows
- Improving or stabilizing existing systems
- Building MVPs that are ready to scale
Clients appreciate working with me because I communicate clearly, think ahead, and deliver dependable results without constant hand-holding.
If you need a senior engineer who can quickly understand your product, make solid technical decisions, and execute with precision — I’d be glad to help.
Node.js
ExpressJS
JavaScript
MongoDB
React
Ember.js
MySQL
Google Analytics
Amazon Web Services
MeteorJS
Vue.js
Google Cloud Platform
Software Architecture & Design
Socket.io
React Native
John O.
Nairobi, Kenya
$30/hr
5.0
9 jobs
I am an AI enabled Senior Developer who bridges the gap between complex Full-Stack engineering and conversion-focused E-commerce. Whether it’s architecting a custom RAG pipeline or AI workflow for your SaaS, or building a headless Shopify store that loads in under 2 seconds, I ship production-ready code that drives measurable growth.
PROVEN IMPACT
The New York Times Store & JR Dunn: Engineered high-traffic production solutions.
Performance: Delivered 40% Core Web Vitals improvement and 25% faster page loads.
Efficiency: Reduced AI token costs by 30% through optimized prompt engineering and RAG caching.
WHAT I DELIVER
AI & Intelligent Systems
Custom LLM integrations (OpenAI/Claude)
RAG pipelines with LangChain
AI agents that automate customer workflows and data processing
Shopify & Headless Commerce
Custom Liquid themes
Hydrogen (Next.js) builds
Complex API integrations (Stripe, Klaviyo, ERPs) designed for high-volume scale
Full-Stack SaaS Development
End-to-end platforms using React/Next.js and NestJS/Node.js or Java springboot/Python Flask
Clean, type-safe architectures (TypeScript) that don't accrue technical debt
CORE TECH STACK
Frontend:
React, Next.js, Remix/ReactRouter, TypeScript, Tailwind CSS, Figma-to-Code
Backend:
Node.js, Python, Java, NestJS, Laravel, PostgreSQL, Prisma
AI/Automation:
LangChain, OpenAI API, Anthropic,N8N
Vector DBs (Neo4j/Pinecone), n8n
I take full ownership of the lifecycle, from technical discovery to deployment. Invite me to your project , I’m available now and can provide a technical roadmap within the hour.
KEYWORDS
Full Stack Developer | Shopify Developer | Shopify Liquid Developer | Headless Commerce | Shopify Theme Development | E-Commerce Developer | React Developer | Next.js Developer | NestJS Developer | Node.js Developer | Laravel Developer | PHP Developer | TypeScript Developer | AI Integration Developer | LangChain Developer | OpenAI API | Anthropic Claude API | GraphRAG | Magento Developer | React Native Developer | Mobile App Developer | API Developer | REST API | GraphQL | SaaS Developer | Web Application Developer | Frontend Developer | Figma to Code | Performance Optimization | Core Web Vitals | Docker | AWS | Vercel | PostgreSQL | MongoDB | Firebase
Node.js
React
TypeScript
PHP
PostgreSQL
MySQL
Jest
Next.js
NestJS
Python
Neo4j
LangChain
Shopify
Shopify Development
Shopify Plus
Java
AI Development
Wayne A.
Naivasha, Kenya
$15/hr
4.6
5 jobs
I help startups, SaaS companies, and growing businesses build scalable web applications, AI-powered software, cloud-native platforms, and enterprise solutions using React, Next.js, Node.js, TypeScript, Python, Go, AWS, Docker, and Kubernetes.
Whether you need an MVP, a production-ready SaaS platform, custom APIs, AI automation, cloud infrastructure, or ongoing product development, I can take ownership of the entire software development lifecycle from architecture and backend development to frontend implementation, deployment, and long-term scaling.
What I Can Build
🚀 SaaS Applications
Multi-tenant SaaS platforms
Subscription and billing systems
Admin dashboards
Customer portals
Role-based access control (RBAC)
User authentication & authorization
SaaS architecture and scaling
💻 Full Stack Web Development
React.js & Next.js applications
TypeScript & JavaScript development
Node.js, Express.js & NestJS backends
Python (FastAPI & Django)
Go (Golang) backend services
REST APIs & GraphQL APIs
Microservices architecture
Real-time applications with WebSockets
Responsive and high-performance web applications
🤖 AI & Automation
OpenAI & GPT integrations
AI chatbots
AI agents
Retrieval-Augmented Generation (RAG)
LangChain applications
Vector databases
AI workflow automation
Document processing
Intelligent search systems
☁️ AWS Cloud & DevOps
AWS architecture and deployment
Docker containerization
Kubernetes orchestration
CI/CD pipelines
GitHub Actions
Infrastructure as Code
Nginx configuration
Monitoring, logging & performance optimization
Production deployments
Cloud cost optimization
🔗 API Development & Integrations
Stripe & PayPal integrations
Payment gateways
Third-party API integrations
OAuth & JWT authentication
Firebase & Supabase
Data synchronization
Webhooks
Enterprise API development
Technical Skills
Frontend: React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3, Tailwind CSS, Redux
Backend: Node.js, NestJS, Express.js, Python, FastAPI, Django, Go (Golang)
Databases: PostgreSQL, MySQL, MongoDB, Redis
Cloud & DevOps: AWS (EC2, S3, RDS, Lambda, CloudFront, IAM), Docker, Kubernetes, GitHub Actions, CI/CD, Nginx, Linux
AI & Machine Learning: OpenAI API, LangChain, RAG, Vector Databases, AI Agents, Prompt Engineering
Why Clients Hire Me
✔ Full-stack expertise—from frontend to cloud infrastructure
✔ Clean, scalable, and maintainable code
✔ Fast MVP development without compromising quality
✔ Strong communication and transparent project updates
✔ Production-ready deployments with DevOps best practices
✔ Long-term maintenance and feature development
✔ Focus on performance, security, and scalability
If you're looking for a Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, TypeScript Developer, Python Developer, Go Developer, AWS Developer, DevOps Engineer, or AI Developer who can deliver reliable, scalable software from concept to production, I'd be happy to discuss your project.
Tags
Full-Stack Developer (React / Node.js) | React / Next.js / Nest.js Developer | Node.js Backend Developer | MERN Stack Developer | Full Stack Laravel Developer | Supabase Full Stack Developer | Full Stack JavaScript Developer | Full Stack SPA Developer | Full Stack Real-Time Web Applications Developer | Full Stack Dashboard Development Expert | Full Stack Custom SaaS & MVP Developer | Full Stack DevOps Engineer | Full Stack Database Management Expert | Responsive Web Design Specialist | Enterprise SaaS, Admin Dashboards, Role-Based Analytics, Reporting, Internal Workflow Automation | Senior Software Developer | SaaS Developer | Nest.js Framework Expert | Node.js Web Development | React Lifecycle Expert | Full Stack Development Specialist,Nuxt.js,Vue.js,Nuxt.js,Vue.js,Nuxt.js,Vue.js,Nuxt.js,Vue.js
React.js, React Native, Next.js, Node.js, Nest.js, JavaScript, TypeScript, Python, Django, Laravel, Supabase, PostgreSQL, MySQL, Firebase, Expo, Flutter, iOS, Android, RESTful API, API Integration, Payment Gateway Integration (Stripe), User Authentication, Cross-Platform App Development, Progressive Web Apps (PWA), AI Development, AI Agent Development, Website Redesign, Mobile App Development, Custom SaaS Development, Full Stack DevOps,Nuxt.js,Vue.js
#WebDevelopment #FullStackDevelopment #WebApplication #JavaScript #NodeJS #ReactJS #Python #Django #APIIntegration #RESTfulAPI #AIDevelopment #PostgreSQL #SaaSDevelopment #UserAuthentication #DatabaseArchitecture #PaymentGatewayIntegration #MobileAppDevelopment #iOS #Android #Flutter #CrossPlatform #ReactNative #Firebase #Expo #TypeScript #ProgressiveWebApp #CustomSaaS #DevOps
Node.js
ExpressJS
JavaScript
Web Application
Web Development
React
React Native
Mobile App
Responsive Design
Amazon Web Services
Cloud Computing
System Deployment
Kubernetes
CI/CD
Next.js
Patrick A.
Kakamega, Kenya
$15/hr
5.0
1 jobs
I am NodeJS developer with a solid qualification in BSc. Mathematics And Computer Science. I incorporate HTML,CSS and JS with MySQL in my development process to build custom Web-based Systems for business.
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