โก Senior Full Stack Developer | 9 Years | MERN Stack, Next.js, React Native, Node.js
๐ฏ Real Products, Real Users, SaaS Platforms, MVPs, Websites & Mobile Apps
๐ React, Node.js, MongoDB, PostgreSQL, TypeScript, Stripe, OpenAI, AWS, Docker
๐ Startups & Founders Trust Me With Their Most Sensitive Products
Let me tell you how this usually goes.
A founder comes to me with an idea and a few screenshots saved on their phone. Either they haven't started, or they started with someone who left things half-built and fully confusing. Somewhere in there they stopped trusting the process. That's when I get the message.
I'm Anas. 9 years building what a product actually needs, SaaS platforms, startup MVPs, websites, backend systems, mobile apps. Not demos. Not "works on my laptop." Real platforms built with React, Next.js, Node.js, MongoDB, PostgreSQL and React Native, handling real data, opened by real people every day.
Here's how I work: I don't touch code until I understand what you're building and why. Sounds obvious, but most delays trace back to someone skipping that step. I ask questions first, then build, whether that's a Next.js frontend, a Node.js backend, or a React Native app for iOS and Android.
And something I'm proud of: clients don't come to me because I'm the cheapest name on the list. They come because someone told them the work holds up.
๐ THE KIND OF WORK I'VE DONE
AI-powered SaaS platforms, including an EHR for mental health practitioners trusted by real therapists. HIPAA, HITRUST, PCI and PIPEDA compliant, with AI-generated clinical notes through the OpenAI API, encrypted telehealth video, scheduling, and Stripe billing, all working as one product.
School management platforms with Next.js, TypeScript and Node.js, enrolment, classes, attendance, grading, with separate role-based access for admins, teachers, students and parents, on a MongoDB schema built to hold up under daily use.
React Native apps live on Google Play and the App Store, fintech wallets, escrow platforms, coaching apps and more, each running off one shared codebase so nobody paid twice for the same work.
Beyond that: websites, backend systems, admin dashboards, APIs. If it's React, Next.js, Node.js, or deployed on AWS, Vercel or Docker, it's work I do regularly, not occasionally.
๐ ๏ธ WHERE I ACTUALLY ADD VALUE
SAAS, MVPS & FULL WEBSITES
From a founder's first MVP to a scaled SaaS platform, React, Next.js, Node.js, MongoDB or PostgreSQL, built to launch fast and hold up once real users arrive. Websites, dashboards, internal tools: if it needs a frontend and backend working together, I build it end to end.
SENSITIVE DATA? I'VE BEEN THERE
Health records, student information, payment details. If your product touches any of it, compliance isn't optional and I know it. Role-based access, encryption, proper Node.js and database architecture, built in from day one, not bolted on later.
ONE BACKEND, EVERY PLATFORM
Web and mobile don't need two teams building the same thing twice. I build the Node.js backend once, properly, then connect your Next.js site and React Native app to it. Your budget goes to growth, not duplication.
AI THAT ACTUALLY DOES SOMETHING
I don't bolt on AI so a product can say it "has AI." Using the OpenAI API I've built AI that turns real therapy sessions into structured clinical notes automatically. Useful, not decorative.
APIS AND BACKENDS THAT DON'T FALL APART
Node.js and Express APIs, MongoDB or PostgreSQL schemas designed properly the first time, REST or GraphQL depending on what fits. Built to last, not to be rebuilt in six months.
๐ฌ WHAT A CLIENT TOLD ME
"He understood the requirements quickly, suggested practical improvements where needed, and handled both the frontend and backend efficiently. The code was clean, well structured, and the project was delivered on time."
โ Upwork Client โญโญโญโญโญ
โ WHAT I BRING
โ๏ธ SaaS Platform & Startup MVP Development
โ๏ธ Websites with React & Next.js
โ๏ธ Backends with Node.js, Express, MongoDB & PostgreSQL
โ๏ธ React Native Apps for iOS & Android
โ๏ธ Compliance-First Builds (HIPAA, HITRUST, PCI, PIPEDA)
โ๏ธ REST & GraphQL API Development
โ๏ธ AI Features with the OpenAI API
โ๏ธ Role-Based Access & Data Security
โ๏ธ Stripe Subscription Billing
โ๏ธ Deployment on AWS, Vercel & Docker
๐ FIELDS I'VE WORKED IN
๐ฉบ Healthcare & Mental Health ยท ๐ Education & School Management ยท ๐ณ Fintech Wallets & Escrow ยท ๐ง Voice, Coaching & Reading Apps ยท ๐คฒ Non-Profit & Crisis Support ยท ๐ Content Publishing ยท ๐ผ๏ธ Arts Organisations ยท ๐ SaaS & Subscription Platforms
๐งฐ TECH I WORK WITH
Frontend: React, Next.js, TypeScript, Tailwind CSS
Backend: Node.js, Express, REST APIs, GraphQL
Database: MongoDB, PostgreSQL, Firebase
Mobile: React Native, Expo
AI: OpenAI API ยท DevOps: Docker, AWS, Vercel ยท Payments: Stripe
๐ฌ WANT TO TALK ABOUT YOUR PROJECT?
Tell me what you're building, a SaaS platform, website, backend, or mobile app. I'll actually listen before I say a word about timel
MERN Stack
Mobile App Development
Web Development
SaaS Development
iOS Development
AI App Development
React Native
Node.js
Next.js
MongoDB
TypeScript
React
JavaScript
Tailwind CSS
ExpressJS
Front-End Development
Back-End Development
Firebase
Expo.io
API Integration
Yosef W.
Addis Ababa, Ethiopia
$25/hr
5.0
4 jobs
I build and ship production software โ not prototypes. As a founder, I run multiple live SaaS products serving 110,000+ users, and as a Lead Software Engineer I've spent 4+ years turning complex business needs into fast, scalable systems.
What that means for you: I've been on the client side of my own products. I think about uptime, server costs, data integrity, and user retention โ because my own revenue depends on them.
๐ Products I've Built and Operate:
----------------------------------------
๐ฑ Mezgebe Tselot โ native Android app with 110,000+ active users, built from scratch (Java/Kotlin, Firebase App Checkโsecured API)
๐ MotifQR โ a dynamic QR code SaaS with branded designs, scan analytics, smart pages, and subscription billing. Built end-to-end with Next.js, Node.js, and Postgress โ live in production (link in Portfolio)
๐ AffCollect โ multi-tenant affiliate earnings SaaS aggregating 50+ networks, with Stripe subscription billing, two-way Xero invoicing sync, and Kubernetes deployment with KEDA autoscaling. Clustered Node.js scraping boosted throughput by 400%
๐ผ What I Do for Clients:
----------------------------------------
๐ป Full-Stack Development (MERN + Next.js): from concept to deployment, TypeScript throughout
๐ค AI & LLM Integration: production-grade LLM features โ structured outputs, tool calling, RAG over your documents, and agent workflows. I use these daily in my own products
โก High-Performance Backends: scaled real-time WebSocket apps with Redis Pub/Sub; MongoDB aggregation optimization. I'm a MongoDB Certified Associate Data Modeler with the Advanced Schema Design badge
๐ฑ Mobile Development: React Native cross-platform + native Android (Java/Kotlin). Shipped IoT/Bluetooth (BLUFI) apps for Upwork clients โ all rated 5 stars
๐ง DevOps: Docker, Kubernetes (KEDA autoscaling), GitLab CI/CD, VPS deployment (GCP, Digiral Ocean, Hetzner), PostgreSQL & MongoDB migrations
๐ ๏ธ Tech Stack:
----------------------------------------
โจ Backend: Node.js, Express.js, TypeScript, WebSockets, Redis, Vercel AI SDK
โจ Frontend: React.js, Next.js, Redux, Tailwind CSS
โจ Mobile: React Native, Android, Java, Kotlin
โจ Databases: MongoDB, PostgreSQL, MySQL, Firebase
โจ DevOps & Tools: Docker, Kubernetes, GitLab CI/CD, Puppeteer, Stripe, REST APIs
If you want a developer who has actually operated software at scale โ not just written it โ let's talk.
MongoDB
Java
Kotlin
TypeScript
Node.js
ExpressJS
React
React Native
Android App Development
Socket.io
JavaScript
Next.js
MERN Stack
Docker
Redis
Firebase
PostgreSQL
AI Agent Development
API Integration
Web Scraping
George M.
Cairo, Egypt
$19/hr
5.0
2 jobs
I help startups and businesses build scalable SaaS applications, backend APIs, AI-powered features, and cloud infrastructure.
With experience across frontend, backend, cloud, DevOps, and system architecture, I can take ownership of the entire product lifecycle, from planning and architecture to development, deployment, and production operations.
My primary stack includes Next.js, React, React Native, NestJS, TypeScript, Python, FastAPI, PostgreSQL, MongoDB, Docker, AWS, and Azure.
I can help with:
โข Full-stack SaaS application development
โข Backend API development and integrations
โข AI integrations (OpenAI, Azure OpenAI, Azure Speech, TTS, STT, Assistants, Agents, LLM APIs, and self-hosted AI workflows and deployment)
โข Authentication, authorization, and RBAC systems
โข Cloud deployment and infrastructure setup
โข Dockerization and CI/CD pipelines
โข Performance optimization and production troubleshooting
โข System architecture and technical planning
Core Technologies & Skills:
Languages:
โข TypeScript
โข JavaScript / ES6+,
โข Python
โข SQL
โข Bash
Frontend & Mobile:
โข Next.js / App Router
โข React
โข React Native / Expo
โข HTML5, CSS3, Tailwind CSS
Backend:
โข Node.js
โข NestJS
โข Express.js
โข FastAPI
โข REST APIs
โข tRPC
โข WebSockets
โข Socket IO
โข JWT
โข RBAC
โข Authentication & Authorization
โข Secure API Design
โข OWASP
โข Prisma
AI & Real-Time Systems:
โข OpenAI
โข Azure OpenAI
โข LiveKit
โข LiveKit Agents
โข Multi-Agent Systems
โข LLM Orchestration
โข Prompt Engineering
โข Azure Speech
โข Speech-to-Text & Text-to-Speech
โข Voice AI
โข Conversational AI
โข WebRTC
โข Self-hosted Models
Databases:
โข PostgreSQL
โข MySQL
โข MongoDB
โข Redis
โข TypeORM
โข Prisma
โข Drizzle ORM
โข SQLAlchemy
โข Data Modeling
โข Query Optimization
โข Data Encryption
Cloud & DevOps:
โข Microsoft Azure
โข AWS (EC2, ECS, ELB, S3, RDS, IAM, Cognito, DynamoDB)
โข Docker
โข Docker Compose
โข Terraform
โข Ansible
โข Jenkins
โข CI/CD
โข Linux
โข Nginx
โข HAProxy
โข Infrastructure as Code (IaC)
โข Monitoring
โข Logging
โข MLOps
Architecture & Engineering:
โข Clean Architecture
โข SOLID Principles
โข Microservices
โข Event-Driven Architecture
โข Distributed Systems
โข High Availability
โข System Design
โข Design Patterns
โข API Integration
โข Unit Testing (Jest, Pytest)
โข Test-Driven Development (TDD)
โข Agile
โข Observability
โข Performance Optimization
What clients value most when working with me:
โข Building scalable, production-ready applications
โข Clean, maintainable, and well-documented code
โข Strong system design and architecture expertise
โข Reliable communication and transparent progress updates
โข Efficient debugging and problem-solving skills
โข Performance optimization and scalable solutions
โข End-to-end ownership from planning to deployment
โข Delivering high-quality software on time
Whether you need a new SaaS product built from scratch, a backend system designed correctly, an AI feature integrated into your platform, or infrastructure deployed reliably, I can help deliver a solution that is scalable, maintainable, and production-ready.
Next.js
React
TypeScript
NestJS
PostgreSQL
Amazon Web Services
Docker
SaaS
Full-Stack Development
JavaScript
Python
DevOps
React Native
Web Development
Front-End Development
Back-End Development
Mobile App Development
MongoDB
Microsoft Azure
AI App Development
Sachindeep S.
Mohali, India
$20/hr
4.6
117 jobs
Senior Full-Stack Developer | React, Next.js, React Native | AI & SaaS Expert
I help startups and founders build scalable web and mobile products that are secure, maintainable, and ready for real-world growth.
With 10+ years of experience, I specialize in taking products from idea to production. I have delivered SaaS platforms, AI-powered applications, healthcare systems, fintech products, and enterprise solutions used by thousands of users worldwide.
What I Bring to Your Project
Full-Stack Expertise: End-to-end development from frontend (React, Next.js) to backend (Node.js, AWS) and mobile (React Native).
AI Integration: Building AI agents, RAG systems, and automation workflows using OpenAI, Claude, and Base44.
Scalable Architecture: Clean code, reliable delivery, and long-term technical ownership.
Industry Experience: Healthcare, FinTech, Marketplaces, Delivery, Gaming, and Social Platforms.
Core Tech Stack
Frontend:
React.js, Next.js, Vue.js, Angular, TypeScript, Tailwind CSS
Mobile:
React Native, Expo, iOS & Android Deployment
Backend:
Node.js, Express, Firebase, Supabase, PostgreSQL, MongoDB, AWS
Payments & APIs:
Stripe, RevenueCat, GraphQL, REST APIs, Webhooks
Selected Projects
TradeBulls: Trading platform supporting equities, derivatives, and commodities.
Vuukle: Community platform serving millions of users globally.
Store To Door: Same-day delivery platform with driver and dispatch workflows.
iPass: Identity verification solution with OCR and liveness detection.
Why Clients Work With Me
- 10+ Years of Professional Experience
- Production-Ready, Maintainable Code
- Clear Communication & Reliable Delivery
- Comfortable Taking Ownership of Existing Codebases
- Long-Term Partnership Mindset
Whether you need an MVP, AI-powered SaaS platform, or an experienced engineer to improve an existing product, I can help deliver a scalable solution that supports your business goals.
NativeScript
React Native
React
Next.js
Angular
Vue.js
Firebase
WebRTC
AWS Application
CI/CD
Stripe
Google Maps
AI Chatbot
AI Development
Claude 3.5 Sonnet
Dame A.
Addis Ababa, Ethiopia
$5/hr
5.0
3 jobs
If you are building a SaaS product, startup MVP, or custom web application, I help you ship a scalable, production-ready product without wasting time or budget.
I work with founders and businesses to turn ideas into working products that are actually usable, testable, and ready for real users. No unnecessary complexity. No rewrites. Just clean, fast, production-ready development.
The difference: my systems have served 600,000+ real users. 30% faster backend. 50% less processing time. These are not portfolio pieces. They are live systems running right now.
Full-stack engineer specializing in Next.js, React, NestJS, and Node.js API development, building scalable SaaS platforms, AI-powered web applications, and production-ready MVPs designed for performance, growth, and long-term reliability.
REAL RESULTS
โข 30% backend boost on a platform serving 600,000+ active users
โข 50% faster order processing through SaaS workflow automation
โข 70% faster product management in a live e-commerce SaaS platform
โข 25% less operator workload through React and Next.js UI optimization
Real systems. Real users. Real impact.
WHAT GETS BUILT
โข SaaS platform development: multi-tenant architecture, subscription billing, role-based access
โข MVP development: full-stack SaaS MVPs delivered fast
โข AI integration: OpenAI API, Claude API, LLM features, AI chatbots
โข Next.js development: App Router, SSR, SSG, ISR, API routes
โข React development: dashboards, SPAs, admin panels, TypeScript, Tailwind CSS, shadcn/ui
โข NestJS development: REST API, GraphQL API, microservices
โข Node.js development: scalable, secure backend systems
โข Full-stack development: end-to-end Next.js, React, Node.js, NestJS apps
โข Angular development: enterprise UI, RxJS, NgRx
โข ASP.NET Core development: C#, Entity Framework Core
โข Flutter development: cross-platform iOS and Android apps
โข Stripe integration: subscriptions, Stripe Connect, webhooks
โข Admin dashboard development: data-heavy, high-performance interfaces
โข Real-time app development: WebSockets, Socket. io
โข Figma to code: pixel-perfect UI
โข Performance optimization: fix slow APIs and unstable systems
โข Cloud and DevOps: AWS, Docker, Vercel, CI/CD, GitHub Actions
HOW WORK IS DONE
โข Clean TypeScript code using SOLID principles
โข Fully tested with Playwright and Jest (unit, integration, end-to-end)
โข Clear communication and consistent updates
โข Reliable delivery with no surprises
TECH STACK
Frontend: Next.js ยท React.js ยท Angular ยท TypeScript ยท Tailwind CSS ยท shadcn/ui ยท Material UI
Backend: Node.js ยท NestJS ยท Express.js ยท ASP. NET Core ยท C# ยท REST API ยท GraphQL ยท Microservices
Database: PostgreSQL ยท MongoDB ยท Redis ยท Prisma ยท TypeORM ยท Supabase
Mobile: Flutter ยท Dart ยท Firebase
Cloud: AWS (EC2, S3, Lambda) ยท Docker ยท Vercel ยท CI/CD ยท GitHub Actions
Testing: Playwright ยท Jest ยท unit testing ยท integration testing ยท end-to-end testing
Tools: Stripe ยท WebSockets ยท Socket. io ยท OpenAI API ยท Claude API ยท Git ยท GitHub
Next.js developer ยท React developer ยท Node.js developer ยท NestJS developer ยท full-stack developer ยท full-stack React developer ยท SaaS developer ยท MVP developer ยท AI developer ยท TypeScript developer ยท Angular developer ยท ASP. NET Core developer ยท Flutter developer ยท Stripe developer ยท GraphQL developer ยท PostgreSQL developer ยท MongoDB developer ยท API developer ยท web app developer ยท admin dashboard developer ยท full-stack Next.js developer
Based in Addis Ababa, Ethiopia (UTC+3, strong overlap with European clients). Available now. Send a message to start building.
React
Next.js
ExpressJS
Full-Stack Development
Amazon Web Services
TypeScript
Node.js
AngularJS
ASP.NET
NestJS
Flutter
SaaS Development
REST API
PostgreSQL
Supabase
SaaS
Minimum Viable Product
Imran F.
Islamabad, Pakistan
$20/hr
5.0
1 jobs
I build scalable SaaS products, business applications, and modern web platforms using Next.js, React, Node.js, TypeScript, and API-driven architectures.
I am a Full Stack Next.js Developer with 3+ years of experience designing, developing, deploying, and maintaining production-ready web applications. I help startups, businesses, and teams transform ideas into secure, high-performance digital products with clean architecture and maintainable code.
My expertise includes:
โ Full Stack Web Development (Next.js, React, Node.js, Express.js, TypeScript)
โ SaaS MVP Development & Business Applications
โ Custom Web Applications & Dashboards
โ REST API Development & Third-Party Integrations
โ Authentication, Authorization & Role-Based Access Control
โ Database Design with MongoDB and scalable backend systems
โ Responsive UI Development with Tailwind CSS
โ Performance Optimization, SEO-Friendly Applications & Deployment
I have built real-world applications across multiple industries, including SaaS platforms, healthcare systems, government management portals, e-commerce platforms, booking systems, educational platforms, and AI-powered applications.
Some of my key projects include:
โข Full-stack Sports Ticketing & E-Commerce Platform
โข Hospital Management REST API with Authentication, Messaging & Scheduling
โข District Government Management System with Role-Based Access
โข Business Websites and SaaS-style platforms
โข AI-powered Financial Intelligence Application
My development approach focuses on:
โ Clean and scalable architecture
โ Secure backend systems
โ Reusable frontend components
โ Performance optimization
โ Long-term maintainability
โ Clear communication and reliable delivery
I work with modern technologies including Next.js, React, TypeScript, Node.js, Express.js, MongoDB, REST APIs, Tailwind CSS, Vercel, and cloud deployment environments.
If you need a developer who can handle both frontend and backend development and build a reliable product from idea to deployment, let's discuss your project.
Next.js
React
TypeScript
Node.js
Full-Stack Development
API Integration
REST API
ExpressJS
MongoDB
SaaS Development
Tailwind CSS
Web Application
JavaScript
User Authentication
Web Application Development
Front-End Development
Back-End Development
RESTful API
Vercel
SaaS
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