Most startups, founders, and growing businesses already know what they want to build. The challenge is finding a Senior Full Stack Developer who can take ownership of the product, from architecture and MVP planning to frontend development, backend infrastructure, API integration, cloud deployment, automation, and long-term scalability.
I help startups, SaaS companies, agencies, and established businesses build modern web applications, SaaS platforms, AI-powered products, CRM systems, business software, marketplaces, customer portals, booking platforms, admin dashboards, automation platforms, Chrome extensions, and mobile applications using production-ready technologies.
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, React Developer, Next.js Developer, Node.js Developer, SaaS Developer, Backend Engineer, API Integration Developer, and AI Developer, I build scalable applications that combine exceptional user experiences with secure backend systems and reliable infrastructure.
Whether you need to build an MVP, modernize an existing application, automate business workflows, integrate AI into your product, or scale an enterprise platform, I can help transform your vision into production-ready software.
What I Build
✔ SaaS Platforms & Multi-Tenant Applications
✔ Startup MVP Development
✔ AI Applications & AI Integration
✔ AI Chatbots & AI-Powered Business Tools
✔ CRM Systems & ERP Solutions
✔ Business Software & Internal Platforms
✔ Customer Portals & Admin Dashboards
✔ Marketplace Platforms & B2B Marketplaces
✔ Booking & Reservation Systems
✔ Financial Platforms & FinTech Applications
✔ Healthcare & Telehealth Platforms
✔ Real Estate Platforms
✔ Mobile Applications (React Native & Flutter)
✔ Chrome Extensions & Browser Extensions
✔ Web Automation & Workflow Automation
✔ API Integration & Third-Party Integrations
✔ Payment Systems (Stripe, PayPal, Webhooks)
✔ Cloud Deployment & DevOps
Core Technical Expertise
Frontend Development
React.js • Next.js • TypeScript • JavaScript • HTML5 • CSS3 • Tailwind CSS • Redux • React Query • Responsive UI Development • Front-End Development
Backend Development
Node.js • Express.js • NestJS • REST API Development • API Architecture • Authentication • Authorization • JWT • OAuth • Backend Infrastructure • Serverless Functions
Database Development
PostgreSQL • MongoDB • Supabase • Firebase • MySQL • Database Design • Database Optimization
AI Development & Automation
AI Development • AI Integration • OpenAI API • Claude API • AI Applications • AI Platform Development • AI Chatbots • Workflow Automation • Business Process Automation • AI-Powered SaaS
Cloud & DevOps
AWS • Docker • Vercel • Cloudflare • CI/CD • GitHub Actions • Deployment • Cloud Infrastructure • Performance Optimization
Payments & Integrations
Stripe Integration • PayPal • Third-Party APIs • REST APIs • Webhooks • API Integration
Industries I've Worked With
SaaS • FinTech • Healthcare • Telehealth • E-commerce • Education • Manufacturing • Real Estate • CRM • ERP • Recruitment • Marketplace Platforms • Booking Systems • Marketing Platforms • 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:
• Clean, production-ready code
• Scalable software architecture
• Strong frontend and backend engineering
• Reliable API integration
• Secure authentication and authorization
• Optimized PostgreSQL and MongoDB database design
• AI integration and automation expertise
• Cloud deployment and infrastructure support
• Clear communication and transparent progress updates
• 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, CRM Developer, Automation Engineer, or long-term technical partner, I'd be happy to discuss your project and recommend the best technical approach
JavaScript
TypeScript
Mobile App Development
App Development
React
Full-Stack Development
SaaS Development
Node.js
API Integration
Web Application Development
Next.js
Database Development
Supabase
PostgreSQL
User Authentication
Minimum Viable Product
Stripe
Tailwind CSS
AI Marketplace
REST API
Marvellous A.
Lagos, Nigeria
$10/hr
4.2
31 jobs
IF YOU SEND ME AN INVITE I'LL SEND YOU A TEXT AND VIDEO WALKTHROUGH ON HOW I WOULD GO ABOUT YOUR PROJECT
Are you struggling to set up Claude Code, connect MCP servers, automate workflows, or fully understand how to use Claude AI for real business results?
“Marvellous helped me finally understand Claude Code and set up an AI workflow that saved me hours every week. Very knowledgeable and easy to work with.” Jose
Businesses and developers using Claude AI are scaling faster with automation, agentic workflows, and custom AI systems while others still waste time with manual processes and confusing setups.
My name is Adegoke Marvellous. I specialize in Claude Code, Claude AI, Claude Cowork, Anthropic API integrations, MCP Server setup, Custom MCP Server development, Model Context Protocol implementation, AI Agent Development, Multi Agent Systems, Multi Agent Orchestration, Agentic Loop systems, Agentic Workflows, CLAUDE md optimization, SKILL md configuration, and AI automation coaching.
I also tutor and coach individuals who want to properly understand Claude AI, Claude Code, Anthropic CLI, and advanced AI automation systems from beginner to advanced level.
If you need someone who can build, guide, troubleshoot, and simplify complex Claude AI systems for your business or project, send me a message and let’s discuss your workflow.
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Claude AI Claude Cowork Claude Code Claude AI Claude Cowork Claude md Anthropic CLI AI Automation OpenClaw Claude 3.5 Claude 3.5 Sonnet Claude Code Claude AI Claude Cowork Claude Code Claude AI Claude Cowork Claude Code Claude AI Claude Cowork Claude
Claude AI Claude Cowork Claude Code Claude AI Claude Cowork Claude md Anthropic
HTML
JavaScript
TypeScript
Claude
Web Development
Python
AI Agent Development
API Integration
Artificial Intelligence
Lead Generation
AI Development
English
Web Design
Content Writing
Automation
Shopify
React
API
Generative AI
Claude 3.5 Sonnet
Benjamin A.
Abuja, Nigeria
$45/hr
5.0
18 jobs
Full Stack Web Developer proficient in Front End Development (React, NextJS, AngularJs, Nuxt 3), Back End Development (NodeJS, Express, MongoDB)
Top-Rated Front-End & Full Stack Developer | Web Design | UX/UI Design ⭐️⭐️⭐️
"Benjamin's performance has been EXCELLENT. He consistently meets all deadlines and provides valuable contributions to the project. He attentively follows through on all tasks, executing and implementing them swiftly and effectively."
~Akash (UPWORK CLIENT)
"Benjamin was so patient with answering my questions, understood what my project needed, and was eager to help. I will certainly hire him again in the future!"
Hello, thanks for visiting my profile.
If you need scalable and efficient software, today is your lucky day.
With nearly a decade of technical development experience, I bring your ideas to life. My expertise includes:
✅ Front-End Development: Built subscription-based services with Nuxt.js and Node.js.
✅ Full Stack Development: Delivered end-to-end E-commerce systems in Agile environments.
✅ Web Design & UX/UI Design
Why Hire Me?
✅ Client-Centric Approach: Your business is my priority.
✅ Effective Communication: Clear and understanding project requirements.
✅ Diverse Expertise: Broad skill set providing all you need in one place.
If this sounds like what you're looking for, click the green button at the top right, and I will get back to you shortly.
Cheers!
Benji
MORE INFORMATION ABOUT MY TECHNOLOGY STACK
~ FRONTEND: ReactJS, React Native, NextJS, JavaScript, jQuery, Redux, CSS & Sass, HTML, Bootstrap, Tailwind CSS, JSX, Typescript and more.
~ BACKEND: NodeJS, Express, Strapi CMS, Rest API, and more.
- DATABASES: MongoDB, Firebase Services, and more.
- 3rd party API integration such as payment systems like Stripe, Paypal, Paystack, Flutterwave, Twilio, SendGrid, Zapier, Facebook, Instagram, Twitter, Google Maps and more
- DEPLOYMENT & CLOUD: AWS, Hostinger VPS, Github Heroku, Docker, Vercel, Firebase, Netlify, cPanel, Cloudinary, Digital Ocean and more.
Front-End Development
JavaScript
TypeScript
Web Development
React
Next.js
Node.js
ExpressJS
API Development
MongoDB
Back-End Development
Web Design
Amazon Web Services
Akinbode A.
Lagos, Nigeria
$35/hr
4.9
49 jobs
Are you building a web application, automating your business workflows, deploying an AI voice agent, or need a WordPress expert? I've got you covered across all four.
I'm a Senior Frontend Engineer with 7+ years of experience delivering production-grade digital systems from complex Angular SPAs to WordPress e-commerce sites, AI-powered automation pipelines, and voice agent deployments.
** Angular & Frontend Development
- Built TaxPadi from scratch: full tax filing platform (CIT, PAYE, VAT), MVP in 8 months, 40% faster feature delivery
- Reduced app load time from 5 minutes to under 5 seconds (99% improvement)
- Angular upgrades v8 → v15, NgRx, AG Grid, Tailwind CSS, CI/CD pipelines
** WordPress & E-commerce
- Built and maintained 15+ WordPress sites — static, one-page, WooCommerce, and LMS platforms
- Improved PageSpeed scores from 68% to 92% and reduced downtime by 40%
- Managed LMS platform for 1000+ students per course including plugins, permissions, and security
- Handled full lifecycle: builds, hosting, updates, performance optimization, and ongoing support
** n8n Workflow Automation & AI Tools
- Build multi-step n8n workflows connecting CRMs, APIs, email, Slack, and AI nodes
- Integrate OpenAI, Claude, and Gemini into real business pipelines
- Automate lead capture, content generation, notifications, and data routing
- Help businesses eliminate repetitive manual work with reliable, documented automations
** AI Voice Agent Development
- Design and deploy conversational voice agents for inbound/outbound use cases
- Build with Vapi, ElevenLabs, Retell AI + Twilio telephony integration
- Connect voice agents to CRMs and backend systems via webhooks and REST APIs
- Prompt engineering for natural, on-brand conversations
Across every service, I bring the same thing: clean architecture, clear documentation, and proactive communication. I don't disappear after delivery, I build systems you can maintain and grow.
Whether you need an Angular team lead, a WordPress developer, an automation architect, or a voice AI developer, let's talk about what you're building.
Angular
Front-End Development
TypeScript
WordPress
WooCommerce
REST API
n8n
Automated Workflow
OpenAI API
AI Agent Development
Conversational AI
Tailwind CSS
React
Chiemela E.
Aba, Nigeria
$10/hr
5.0
1 jobs
Hi there! 👋 Tired of developers who promise the world but deliver... meh?
I'm the guy who actually makes your Figma designs look EXACTLY like you imagined (yes, even that tricky hover animation you're worried about)
I help brands and startup build lightning fast modern website using React,Next.js and Tailwind CSS.
📘 𝗧𝗼𝗼𝗹𝘀 & 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀:
🔹 React.js & Next.js
🔹 TypeScript & JavaScript
🔹 Tailwind CSS & ShadcnUI
🔹 Redux, Context API, GraphQL
🔹 Vercel, AWS, Git, Lighthouse Audits
➡️ 𝗠𝘆 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 𝗜𝗻𝗰𝗹𝘂𝗱𝗲𝘀:
✔️ Figma to Code Conversion – Pixel-perfect React & Next.js implementations.
✔️ Frontend Development – React.js, Next.js, Vue.js, Angular.js.
✔️ Performance Optimization – Lighthouse score 100, SEO-friendly builds.
✔️ Styling Frameworks – Tailwind CSS, ShadcnUI, Bootstrap, Styled Components.
✔️ UI/UX Enhancement – Responsive, cross-browser compatible, and mobile-first design.
✔️ API Integration – REST APIs, GraphQL, Redux, Context API.
➡️ 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲?
🔷I audit your designs - Catch potential issues before they become expensive problems.
🔷 Pixel-Perfect Developer – Figma to code with 100% accuracy.
🔷 Performance-Driven – Every project optimized for speed & scalability.
🔷30-day support - Because launch day shouldn't be scary
🤗 Finally, I’m here to help you turn your design into a live, interactive experience that performs beautifully across all devices. Let’s build something amazing together.
🔑 𝐊𝐞𝐲𝐰𝐨𝐫𝐝𝐬:
Front-End Developer, Senior Frontend Developer, React Developer, Next.js Developer, Vue.js Developer, Angular Developer, TypeScript Developer, Tailwind CSS Expert, ShadcnUI Developer, Figma to React, Figma to Next.js, Figma to Frontend, Responsive Front-End Development, Pixel-Perfect Front-End Developer, SaaS Frontend Development, Web3 Front-End Developer, UI/UX Frontend Developer, Bootstrap Developer, Styled Components Developer, GraphQL Developer, REST API Integration, Redux Expert, Context API Developer, JavaScript Developer, Modern Frontend Developer, High-Performance Frontend, Lighthouse Optimization, Cross-Browser Frontend Development, SPA Development, Landing Page Developer, Enterprise Frontend Solutions.
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