๐ Senior Full-Stack Developer | React, Node.js, Python | Scalable Web Apps That Deliver Results ๐
5+ years of Fullstack development experience helping startups, growing businesses, and enterprises build high-performance, user-focused digital products. I write clean, maintainable, and scalable code while solving real-world problems through robust software engineering practices.
As a full-stack developer, I specialize in modern web application development using tools like React, Node.js, Django, Python, and AWS. From architecting cloud-based systems to building responsive front-ends and RESTful APIs โ I bring end-to-end software solutions that drive real results.
๐ง What I Can Help You With:
- Full-Stack Web Development
Responsive UIs and scalable backends using React, Node.js, Django, Express, and Next.js.
- Software Architecture & Design
Design efficient system architecture, scalable data models, and modular codebases using industry best practices.
- Mobile Development (React Native)
In addition to my full-stack expertise, I specialize in mobile development using React Native. Whether you're looking to build a cross-platform mobile app for iOS and Android or need seamless integration with your existing web app, I can help bring your vision to life. With a focus on performance optimization and user-friendly interfaces, I ensure your mobile app delivers an exceptional experience across devices.
- API Development & Integration
Secure, performant RESTful and GraphQL APIs with proper versioning and documentation.
- Cloud Infrastructure & DevOps
Deploy and scale apps on AWS, Heroku, or Vercel using Docker, Kubernetes, CI/CD pipelines, and infrastructure-as-code.
- Agile Software Development
Collaborate in Agile/Scrum teams, write unit/integration tests, and manage code with Git.
MVPs for Startups
Quickly turn your product idea into a flexible, production-ready codebase.
๐ก Why Clients Love Working With Me:
โ Clear, proactive communication and regular updates
โ Deep understanding of software engineering principles (SOLID, DRY, OOP, TDD)
โ Business-minded โ I align technical solutions with your goals
โ Fast, dependable delivery without compromising quality
โ Proven success across freelance, agency, and in-house teams
Letโs bring your next app, platform, or product to life with world-class code and a smooth development process.
๐ฉ Message me today to get started!
#SoftwareEngineer #FullStackDeveloper #WebDeveloper #ReactDeveloper #Nodejs #PythonDeveloper #Django #Nextjs #FrontendDeveloper #BackendDeveloper #CloudDeveloper #APIEngineer #AWS #Docker #MVPDevelopment #AgileDeveloper #DevOps #UpworkFreelancer #RemoteSoftwareEngineer #CleanCode #ScalableArchitecture #CI/CD #SystemDesign
Software Architecture
CSS 3
React
HTML5
JavaScript
Node.js
React Native
Bootstrap
Django
Docker
Kubernetes
Git
Postman
SQL
API Integration
Golang
Python
Rust
Fola O.
Akure, Nigeria
$17/hr
5.0
1 jobs
With 3 years of mobile engineering experience and 5 years in the tech space, I bring a wealth of expertise encompassing embedded systems, robotics, web, backend, and mobile development. As your go-to developer, I ensure swift delivery of high-quality solutions tailored to your needs.
๐ก Do you dislike?
๐น Slow Development Speed: My 10x dev approach ensures rapid yet top-notch development, delivering complete and polished work within tight deadlines.
๐น Unfinished Apps or bugs?: I excel in rescuing unfinished projects and bug bounty hunting, transforming them into your disfunctional project, fully functional, market-ready applications!
๐น Incomplete Work: Rest assured, as a perfectionist, I prioritize completeness and perfection in every project, leaving no loose ends.
๐น Poor communication and lack of reliability: Expect swift communication and weekly progress reports, as I value transparency and collaboration.
๐น Poor work ethics: With a commitment to excellence, I safeguard my reputation by consistently delivering exceptional work, even if it means sacrificing pay.
๐ Benefits You'll Get From Working With Me:
๐น Effective Communication: I prioritize clear and prompt communication, ensuring alignment throughout the project lifecycle.
๐น Speed of Delivery: Experience swift turnaround times without compromising on quality, as I'm dedicated to meeting deadlines efficiently.
๐น Completeness: Count on me to deliver comprehensive solutions, meticulously crafted to meet your specifications and expectations.
๐น Ease of Handover: I write clean, reusable, well tested code with thorough documentation, facilitating smooth transitions for future development.
๐น Versatility: I work well with literally any tool and have built and currently maintain many complex open-source developer tools, ensuring adaptability to your project's unique requirements.
๐ซ Clients I Don't Want to Work With:
I prefer not to engage with clients who struggle to pay promptly or fail to appreciate freelancer input and contributions. I strongly believe mutual respect and collaboration are key to a successful partnership.
๐จโ๐ผ About Me:
I am a highly intelligent, effective, and innovative developer known as dartgod in the flutter/dart community, reflecting my expertise and passion for Dart language. With a keen eye for building products that drive brand growth, I've successfully led mobile engineering teams and collaborated with startups to bring their visions to life. From complex UI implementations to scalable architectures, rigorous security expectations and large codebase maintainance, I'm committed to delivering excellence and fostering success. Let's work together to bring whatโs in mind to life!
๐ง Skills:
* State Management: flutter_bloc, bloc, Stacked, Riverpod, VanillaState, Provider, Getx.
* App Architecture: MVVM, MVC, MVP, BLoC.
* Local Storage: Sqlite, Hive, shared_prefs, flutter_secured_storage.
* Specializations: Cryptography (AES, P256, etc), architecture, attestation/integrity test, Bluetooth, offline Wi-Fi communication, platform-specific code.
* Backend: Nest.js, Firebase, Appwrite, Express.js, dart shelf, Angel3 dart.
* Frontend: Flutter, Angular, Angular Dart, HTML, CSS, SCSS.
* Deployment Platforms: Android, iOS, tablet, web.
๐ Keywords:
bug fix, chat, image upload, firebase, animation, cross-platform mobile applications, secure authentication, senior flutter developer, platform-specific code, RESTful APIs, live streaming, code refactoring, Xcode, Testflight, pointycastle, go_router, open-source, figma, streaming, real-time chat, Websocket, GraphQL, G-RPC, RPC, REST.
Architecture
Flutter
Dart
TypeScript
ExpressJS
Back-End Development
Back-End Development Framework
Mobile App Bug Fix
Mobile App Development
Mobile App Development Consultation
Mobile App
Mobile App Design
Desktop Application
Web Application Development
Software Architecture & Design
Israel A.
Lagos Island, Nigeria
$10/hr
5.0
12 jobs
๐ AI SaaS Developer | Lovable.dev Expert | Supabase & OpenAI Integration Specialist
I help startups, founders, and growing businesses turn AI ideas into production-ready SaaS products, mobile apps, and scalable web applications fast.
Whether youโre building a new AI-powered MVP, improving an existing Lovable app, fixing AI-generated code, or preparing for launch, I can help you move from concept to a polished, launch-ready product quickly and efficiently.
I specialize in Lovable.dev, Supabase, React/Next.js, OpenAI integrations, and AI-assisted development workflows, helping founders build, optimize, and scale SaaS platforms with clean architecture and fast execution.
What I Build
โ AI SaaS platforms & MVPs
โ Lovable.dev applications & AI-generated app optimization
โ AI chatbots & AI agents
โ Supabase backend systems & authentication flows
โ OpenAI-powered apps & workflow automation
โ Marketplace & booking platforms
โ Subscription-based SaaS products
โ Automation dashboards & internal tools
โ Mobile-ready SaaS products
โ iOS & Android app deployment support
My Tech Stack
โข Lovable.dev โ rapid AI SaaS and web app development
โข Supabase โ database architecture, authentication, RLS, edge functions, backend systems
โข React / Next.js / TypeScript / Vite โ scalable, production-ready applications
โข OpenAI API โ AI agents, chatbots, assistants, automation workflows
โข Stripe โ SaaS subscriptions, billing systems, payment integrations
โข API integrations & Webhooks โ third-party platforms, automations, server-side workflows
โข Vercel / Cloud Deployment โ production hosting and launch optimization
What I Can Help You With
๐น Build a Lovable.dev SaaS MVP from scratch
๐น Review, fix, and optimize existing Lovable or AI-generated applications
๐น Convert Lovable prototypes into production-ready, scalable products
๐น Audit and improve existing codebases for performance, UX, and launch readiness
๐น Fix Supabase backend issues, authentication, database schema, RLS, and edge functions
๐น Build AI chatbots, AI agents, and OpenAI-powered workflows
๐น Develop marketplace, booking, dashboard, and SaaS platforms
๐น Integrate APIs, webhooks, Stripe payments, CRM tools, and automation systems
๐น Deploy web apps and prepare products for App Store & Google Play submission
๐น QA testing, bug fixing, and pre-launch optimization
Why Clients Work With Me
โ Fast MVP development & rapid execution
โ Production-ready implementation, not just prototypes
โ Strong experience with Lovable.dev + Supabase workflows
โ Clean, scalable, and developer-ready architecture
โ Detail-oriented execution with pixel-perfect improvements
โ Proactive communication and startup-focused collaboration
โ Ability to work with minimal hand-holding and fast iterations
โ Strong understanding of both technical execution and business requirements
๐ก Recent Project Types I Work On
โข Lovable.dev SaaS applications
โข AI-powered SaaS products
โข Supabase backends & authentication systems
โข AI chatbot and automation platforms
โข Marketplace & booking platforms
โข Subscription and membership systems
โข Workflow automation tools
โข Production optimization for AI-generated apps
โข Mobile app deployment & launch support
โข Startup MVP development
๐ฉ If you're building an AI SaaS product, Lovable app, mobile app, chatbot, automation platform, or Supabase-powered application or need help fixing, optimizing, or launching an existing project send me a message and letโs bring it to life.
Core Expertise:
Lovable.dev | Claude | Claude Code | OpenAI API | AI | Artificial Intelligence | AI App Development | AI Agent Development | AI Model Integration | AI Integrations | AI-powered Website | AI-powered SaaS | Prompt Engineering | AI-assisted Development | Vision AI | React | React Native | Next.js | JavaScript | TypeScript | HTML | HTML5 | CSS | CSS3 | Tailwind CSS | Responsive Design | Responsive Web Design | UI | UX | UI/UX Design | Web Design | Frontend Development | Component Architecture | Node.js | Python | PHP | Laravel | SQL | PostgreSQL | PostgreSQL Programming | Database Design | Database Relationships | Backend Development | Full-Stack Development | Full-Stack Developer | Supabase | Authentication | RBAC | Realtime Updates | File Storage | Edge Functions | Database Structure | User Roles | Permissions | Admin Dashboard | Client Dashboard | REST API | API Integration | Shopify Admin API | Google APIs | Zoom API | Teams Integration | Transactional Email | Stripe API | PayPal Integration | Facebook Pixel | Meta Events Manager | Google Analytics | Google Tag Manager | Klaviyo | Amazon MCF | Square Appointments | UTM Tracking | Triple Whale | Capacitor | Android App Development | iOS Development | Cross-Platform Mobile Development | Progressive Web App (PWA) | Git | GitHub | GitHub Pages | Vercel | Netlify | Cloudflare | Cloudflare Workers | DNS | SSL | HTTPS | Web Hosting | Deployment | Production Deployment | Domain Configuration | Custom Domain | Stripe | PayPal | Shopify | Shopi
Web Development
AI Development
AI App Development
Supabase
React
Next.js
Full-Stack Development
SaaS Development
OpenAI API
AI Agent Development
API Integration
PostgreSQL
TypeScript
Stripe API
n8n
Replit
Database Design
Web Application Development
React Native
Android App Development
Mike O.
Ijebu Ode, Nigeria
$10/hr
5.0
15 jobs
Many startups, founders, and growing businesses know what they want to build. The challenge is finding a Mobile & Web App Developer who can transform an idea into a scalable digital product, from product strategy and MVP planning to UI/UX design, frontend development, backend architecture, API integration, cloud deployment, automation, testing, and ongoing product evolution.
๐ฆ๐ฒ๐ป๐ฑ ๐บ๐ฒ ๐ฎ๐ป ๐๐ป๐๐ถ๐๐ฒ ๐ผ๐ฟ ๐ ๐ฒ๐๐๐ฎ๐ด๐ฒ ๐ณ๐ผ๐ฟ ๐๐ฅ๐๐ ๐๐ข๐ก๐ฆ๐จ๐๐ง๐๐ง๐๐ข๐ก
I help startups, SaaS companies, agencies, and established businesses build scalable web and mobile applications that streamline operations, improve customer experiences, and accelerate business growth. From SaaS platforms, AI-powered products, CRM systems, and customer portals to marketplaces, booking platforms, admin dashboards, automation solutions, Chrome extensions, and custom business software, I deliver production-ready solutions built for performance, scalability, and long-term success.
My primary expertise includes React.js, Next.js, TypeScript, JavaScript, Node.js, Express.js, NestJS, PostgreSQL, MongoDB, Supabase, Firebase, AWS, Docker, Vercel, Tailwind CSS, Stripe, REST APIs, AI Integration, Workflow Automation, and Cloud Infrastructure.
As a Full Stack Developer specializing in React.js, Next.js, Node.js, SaaS development, API integration, and AI-powered applications, I build secure, scalable, and high-performance software that delivers exceptional user experiences, reliable backend systems, and cloud-ready infrastructure. Every solution is designed with scalability, maintainability, security, and long-term business growth in mind.
Whether you're validating an MVP, building a SaaS platform, modernizing an existing application, integrating AI, automating complex business workflows, or scaling enterprise software, I deliver production-ready solutions that are secure, scalable, high-performing, and built to support long-term business growth
What I Build
โ SaaS Platforms & Multi-Tenant Applications
โ Startup MVP Development
โ AI Applications & AI Integration
โ AI Chatbots & AI-Powered Business Tools
โ CRM Systems & ERP Solutions
โ Business Software & Internal Platforms
โ Customer Portals & Admin Dashboards
โ Marketplace Platforms & B2B Marketplaces
โ Booking & Reservation Systems
โ Financial Platforms & FinTech Applications
โ Healthcare & Telehealth Platforms
โ Real Estate Platforms
โ Mobile Applications (React Native & Flutter)
โ Chrome Extensions & Browser Extensions
โ Web Automation & Workflow Automation
โ API Integration & Third-Party Integrations
โ Payment Systems (Stripe, PayPal, Webhooks)
โ Cloud Deployment & DevOps
Core Technical Expertise
Frontend Development
React.js โข Next.js โข TypeScript โข JavaScript โข HTML5 โข CSS3 โข Tailwind CSS โข Redux โข React Query โข Responsive UI Development โข Front-End Development
Backend Development
Node.js โข Express.js โข NestJS โข REST API Development โข API Architecture โข Authentication โข Authorization โข JWT โข OAuth โข Backend Infrastructure โข Serverless Functions
Database Development
PostgreSQL โข MongoDB โข Supabase โข Firebase โข MySQL โข Database Design โข Database Optimization
AI Development & Automation
AI Development โข AI Integration โข OpenAI API โข Claude API โข AI Applications โข AI Platform Development โข AI Chatbots โข Workflow Automation โข Business Process Automation โข AI-Powered SaaS
Cloud & DevOps
AWS โข Docker โข Vercel โข Cloudflare โข CI/CD โข GitHub Actions โข Deployment โข Cloud Infrastructure โข Performance Optimization
Payments & Integrations
Stripe Integration โข PayPal โข Third-Party APIs โข REST APIs โข Webhooks โข API Integration
Industries I've Worked With
SaaS โข FinTech โข Healthcare โข Telehealth โข E-commerce โข Education โข Manufacturing โข Real Estate โข CRM โข ERP โข Recruitment โข Marketplace Platforms โข Booking Systems โข Marketing Platforms โข Business Automation
Why Clients Hire Me
I don't just build features, I help build products that are scalable, secure, maintainable, and ready for growth.
Clients value working with me because I provide:
โข Clean, production-ready code
โข Scalable software architecture
โข Strong frontend and backend engineering
โข Reliable API integration
โข Secure authentication and authorization
โข Optimized PostgreSQL and MongoDB database design
โข AI integration and automation expertise
โข Cloud deployment and infrastructure support
โข Clear communication and transparent progress updates
โข Long-term technical partnership
Whether you already have Figma designs, an existing codebase, or just an idea on paper, I can help you build a modern web application, SaaS platform, CRM, AI product, automation system, marketplace, Chrome extension, or mobile application from concept to production.
If you're looking for a Senior Full Stack Developer, React Developer, Next.js Developer, Node.js Developer, Backend Engineer, SaaS Developer, AI Developer, API Integration Developer or long-term technical partner, I'd be happy to discuss your project and recommend the best technical approach.
Mobile App Development
App Development
React
JavaScript
Full-Stack Development
SaaS Development
Node.js
API Integration
Web Application Development
Next.js
TypeScript
Database Development
Supabase
PostgreSQL
User Authentication
Minimum Viable Product
Stripe
Tailwind CSS
AI Marketplace
REST API
Ibraheem A.
Offa, Nigeria
$25/hr
5.0
3 jobs
High-Performance Full Stack Solutions for Scalable Businesses
I don't just build websites; I build engines for growth. With a deep background in high-conversion eCommerce and a transition into Full Stack engineering, I bridge the gap between complex backend logic and pixel-perfect user experiences.
My Core Tech Stack:
Frontend: React.js, Next.js, Tailwind CSS, TypeScript
Backend: Node.js, Express, Python (Django/FastAPI)
Database: PostgreSQL, MongoDB, Redis
eCommerce: Custom Shopify Apps, Headless Commerce, WooCommerce
What I bring to your project:
Whether you're launching a new SaaS platform or migrating a complex legacy store to a modern stack, I ensure your application is secure, SEO-optimized, and built to scale. I specialize in API integrations, custom dashboard development, and database architecture.
Software Architecture
Full-Stack Development
Web Application
React
Node.js
API Integration
Database Design
Next.js
JavaScript
TypeScript
Ecommerce Website
Software Development
Git
PostgreSQL
MongoDB
RESTful API
Tailwind CSS
Performance Optimization
Responsive Design
Dorcas A.
Lekki Peninsula, Nigeria
$20/hr
4.9
71 jobs
Bringing and developing ideas to life!!!
Hello,
I am a versatile full-stack software developer with 5+ years of experience building high-performing solutions across mobile, web, and desktop platforms. I help businesses and startups turn ideas into fully functional applications; whether it's a cross-platform mobile app, modern web platform, or powerful desktop software.
I have years of experience in the creation and development of websites , desktop and mobile application. I deliver to suit your need and to bring your ideas to life. Be it desktop , mobile or web applications; I am capable of delivering the best product for you.
What I Offer:
1. Mobile Development: React Native & Blazor Hybrid Apps, Cross-platform builds (Android & iOS), API integration & authentication
2. Web Development: React, Next.js, Node.js, RESTful APIs & backend services, Responsive, performance-optimized UIs
3. Desktop & Automation: C# (WinForms/WPF) & .NET-based apps, Electron cross-platform desktop apps, Python scripting & automation tools.
Iโve built:
-Company websites (including one currently live for a client)
-Desktop applications for automation and monitoring
-Mobile apps published and stored on GitHub
-Full-stack solutions from frontend to backend APIs
I work as an individual freelancer and ensure:
Clean, maintainable code
On-time delivery
Long-term client support
Clear communication throughout the project
Why Work with Me?
1. Creative Excellence: Designs and edits that combine creativity with functionality.
2. Attention to Detail: Every project is handled carefully to ensure exceptional results.
3. Client-Centered Approach: Your vision and goals are my priority from start to finish.
4. Quick Turnaround: Reliable and timely delivery to keep your projects on track.
Letโs collaborate to create and develop software that set your brand apart.
If you need a reliable developer who can take on web, mobile, or desktop applications from concept to deployment, let's work together!
Ready to get started?
Send me a message; Iโd love to hear about your project!
Best Regards
Dorcas
TypeScript
Blazor
Electron
Python
API Integration
.NET Framework
C#
React Native
React
Node.js
Desktop Application
Web Application Development
Mobile App Development
AngularJS
SQL Programming
How it works
Post a job for freePost a job
Tell us what you need. Create your own job post or generate one with AI then filter talent matches.
Hire top talent fast
Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.
Collaborate easily
Use Upwork to chat or video call, share files, and track project progress right from the app.
Payment simplified
Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.
Don't just take our word for it
โUpwork provides an umbrella-level of security. I can see a talentโs work history and ratings. I can hold payments in escrow. I can communicate through Upwork Messages instead of working through my email address.โ
KD
Kim Darling
Emerald Tiger
โUpwork is the best platform to hire skilled professionals when we're not looking for a full-time employee. All the companies in our portfolio use Upwork to find talent across a wide range of fields.โ
DM
David Merry
Kinetic Investments
โOur very specific requirements can be a challengeโWith Upwork, weโre able to access a bigger community to ensure the success of our projects.โ
KK
Katja Krohn
Summa Linguae
How do I hire a Software Architecture Freelancer in Nigeria on Upwork?
You can hire a Software Architecture Freelancer in Nigeria on Upwork in four simple steps:
Create a job post tailored to your Software Architecture Freelancer project scope. We'll walk you through the process step by step.
Browse top Software Architecture Freelancer talent on Upwork and invite them to your project.
Once the proposals start flowing in, create a shortlist of top Software Architecture Freelancer profiles and interview.
Hire the right Software Architecture Freelancer for your project from Upwork, the world's largest work marketplace.
At Upwork, we believe talent staffing should be easy.
How much does it cost to hire a Software Architecture Freelancer?
Rates charged by Software Architecture Freelancers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Software Architecture Freelancer in Nigeria on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Software Architecture Freelancers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Software Architecture Freelancer team you need to succeed.
Can I hire a Software Architecture Freelancer in Nigeria within 24 hours on Upwork?
Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Software Architecture Freelancer proposals within 24 hours of posting a job description.
Find more freelancers
Top cities for Software Architecture Freelancers in Nigeria