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$40/hr
100%
Job Success
$2K+ earned
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💼 Professional Summary
I'm a seasoned Full Stack Developer with 6+ years of experience crafting robust, scalable web solutions across diverse business environments. From secure content platforms to educational tech products and dynamic applications, I deliver comprehensive technical solutions that drive business success.
🛠️ Technical Expertise
🔄 Full Stack Mastery: End-to-end development with seamless frontend-backend integration
📚 MERN Specialist: MongoDB, Express.js, React.js, Node.js implementation and optimization
☁️ AWS Cloud Services: Lambda, API Gateway, DynamoDB, S3, CloudFront, IAM
🏗️ Architecture Design: Serverless, Microservices, Event-driven systems
🖥️ Frontend Development: React.js, Redux, Material UI, Responsive Design
⚙️ Backend Engineering: Node.js, GraphQL, REST APIs, Authentication systems
🔄 DevOps Integration: CI/CD pipelines, Docker, Kubernetes, Automated testing
📊 Database Management: Schema design, Query optimization, Data modeling
✨ What Sets Me Apart
🔹 End-to-End Delivery: Complete project management from concept to deployment
🔹 Performance Optimization: Solutions that enhance speed, efficiency, and user experience
🔹 Cost-Effective Architecture: Smart designs that minimize operational expenses
🔹 Collaborative Approach: Transparent communication and inclusive decision-making
🔹 Technical Excellence: Adherence to best practices and modern development standards
🏆 Notable Achievements
📈 Engineered serverless GraphQL backend for EdTech platform → 200% user base growth
🚀 Led backend optimization at CodeJunkie → 25% system performance improvement
🔌 Developed Chrome extension at NICKLPass → 40% increase in user access
💻 Architected AWS cloud solutions → 35% reduction in infrastructure costs
🔄 Implemented CI/CD pipelines → 70% faster deployment cycles
🤝 Working Philosophy
I thrive in collaborative environments where technical excellence and innovation drive success. My approach combines strong technical expertise with clear communication and adaptability, ensuring your project succeeds regardless of complexity or scale.
Looking for a developer who can transform your vision into reality? Let's connect and discuss how my comprehensive skill set can elevate your next project.
$20/hr
100%
Job Success
$200+ earned
Available now
Offers consultations
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🚀 Turning Complexity into Scalable AI Solutions
I don’t just write code; I build production-ready intelligent systems. Whether you are a startup needing a rapid MVP or an enterprise automating complex operations, I bridge the gap between robust Full-Stack architecture and cutting-edge AI.
🤖 AI & LLM Engineering Specialist
I specialize in Agentic Workflows systems that don't just "chat" but actually act.
AI Agents & Multi-Agent Systems: Building autonomous agents using LangGraph, CrewAI, and AutoGen.
Advanced RAG Pipelines: High-accuracy retrieval systems using Vector Databases (Pinecone, Weaviate, Milvus).
Custom LLM Integration: Fine-tuning and prompt engineering for GPT-4, Claude 3.5, and Llama 3.
Voice AI: Real-time conversational agents with ultra-low latency (STT/TTS).
💻 Full-Stack & Backend Excellence
Scalability is non-negotiable. I build backends that support millions of requests.
Backend: Node.js (NestJS), Python (FastAPI, Django).
Frontend: React.js, Next.js, TypeScript (focused on performance & UX).
Architecture: Microservices, GraphQL, RESTful APIs, and WebSockets.
Cloud/DevOps: AWS, Docker, Kubernetes, CI/CD (GitHub Actions).
⚙️ Business Automation (No-Code & Low-Code)
If a custom script isn't the fastest path, I use advanced automation:
n8n & Zapier: Complex multi-step workflows with AI nodes.
CRM Integration: Automating lead scoring and outreach in HubSpot/Salesforce.
🏆 Why Clients Choose Me
8+ Years Experience: I've seen the web evolve from simple sites to AI-first apps.
Clean Architecture: Code that is maintainable, documented, and ready for your next 10 developers.
ROI-Driven: I focus on features that either save you time or make you money.
United Kingdom
$60/hr
100%
Job Success
$20K+ earned
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Hi there! I'm Neil. I'm a Web Developer based in the UK.
I've been a developer for a number of years - all self taught. I've worked previously for dozens of clients, providing them top quality results. I bring a non tech approach to my clients. During our conversations, you'll notice I don't throw buzz words at you. I break things down in layman terms. All my communication is personally written, and not AI generated - this includes every proposal I send.
A vast majority of my work is WordPress, PHP, React and Python related, but once you've been a developer for this long, you soon realise there isn't much that can't be done! I'm not just a programmer to get paid, I love my job and I'm often working on my own personal projects when I'm not busy freelancing!
Checkout my portfolio here: neilmcnaught.dev
Neil M.
has worked
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$20/hr
100%
Job Success
$2K+ earned
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I’ve built browser and Chrome extensions across multiple industries, including SaaS, eCommerce, sports, news, and data-driven platforms. From simple workflow tools to complex scraping, parsing, and automation systems.
With over 7 years of hands-on development experience, I focus on building fast, reliable tools that solve real problems. Alongside freelancing, I also develop and run my own software products, so I approach every project with a strong product mindset.
What I specialize in:
• Chrome & browser extensions (Manifest V3, advanced UI, automation & data extraction)
• SaaS tools, dashboards, and API-driven features
• Automation workflows and custom-built utilities for online platforms
• eCommerce-focused tooling and data-driven systems
My goal is simple — create clean, efficient extensions and tools that feel solid, intuitive, and built to last.
If you’re looking for a developer who understands Chrome extensions, automation, and SaaS from a real-world product perspective, feel free to reach out.
Zak F.
has worked
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$15/hr
90%
Job Success
$700+ earned
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𝗦𝗲𝗻𝗶𝗼𝗿 𝗙𝘂𝗹𝗹 𝗦𝘁𝗮𝗰𝗸 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗪𝗲𝗯 𝗗𝗲𝘀𝗶𝗴𝗻𝗲𝗿
As a Full Stack WordPress Developer with over 12 years of experience, I have a proven track record of designing and developing engaging and responsive websites for clients across various industries. I am highly skilled in programming languages such as HTML, CSS, JavaScript and PHP, as well as in designing custom WordPress themes and developing custom plugins. Additionally, I am experienced in integrating third-party plugins to enhance website functionality and deliver a seamless user experience.
Throughout my career, I have worked with clients across various industries and have successfully completed numerous web development projects using WordPress. I have a passion for solving complex problems and delivering high-quality work that meets the needs of my clients and their users.
I look forward to the opportunity to work with you and bring your vision to life. If you have a web development project in mind, please feel free to contact me to discuss your needs and goals.
Ayaz B.
has worked
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$40/hr
100%
Job Success
$20K+ earned
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I’m a Full-Stack Developer with several years of hands-on experience building web applications from scratch and bringing existing projects to a production-ready state. I build real products using AI-assisted low-code tools like Bolt, Lovable, and Replit, while keeping full control over architecture and code quality. I work across both frontend and backend, and I also handle deployment setup and DevOps tasks, including environment configuration, security basics, and monitoring (logs and alerts), to ensure applications are reliable, performant, and run smoothly in production.
Selected work samples are available in the Portfolio section below, including SaaS platforms, AI-assisted web apps, payment flows, dashboards, and production-ready MVPs.
🔹 What I Offer:
✅ Full-Stack Development: Expertise in Node.js, React.js and Next.js to build modern, robust web applications.
✅ Deployment & Production Setup: Setting up deployments, environments, basic security, and monitoring (logs and alerts) to ensure applications run smoothly in production.
✅ API Development & Third-Party Integrations:
RESTful API integrations and third-party services including Stripe, Google OAuth authentication, Zapier automations, and email marketing tools like Flodesk.
✅ Performance Optimization & Security: Implementing best practices for scalability, security, and stable behaviour in production environments.
🛠 Key Skills & Technologies:
🚀 Frontend: React.js, Next.js, JavaScript, Redux, Tailwind CSS, responsive UI, component-based design
🚀 Backend: Node.js, Express.js, REST APIs, API integrations, serverless functions
🚀 Databases: Supabase, Firebase, PostgreSQL, MongoDB
🚀 Deployment & DevOps: Deployment setup, environment configuration, security, monitoring (logs & alerts), webhooks
🚀 Tools & Platforms: Git, GitHub, Stripe, Supabase, Firebase, Zapier, Clerk
🚀 Low-Code: Bolt.new, Lovable.dev, Replit, Firebase Studio
💡 Why Work With Me?
🔹 Scalable Solutions: I build high-performance, secure, and scalable applications tailored to your business needs.
🔹 Low-Code & Full-Stack Expertise: I combine low-code platforms (Lovable, Bolt, Replit) with custom frontend and backend development to deliver fast without sacrificing quality.
🔹 Reliable & Transparent: You can expect clear communication and on-time project delivery with best practices in agile development.
If you're looking for a skilled, reliable developer who can bring your vision to life, let’s connect and discuss your project!
📩 Let’s build something amazing together!
Mariia O.
has worked
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$20/hr
100%
Job Success
$5K+ earned
Offers consultations
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𝟓+ 𝐲𝐞𝐚𝐫𝐬 | 𝐓𝐨𝐩 𝐑𝐚𝐭𝐞𝐝 | 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯 (𝐒𝐚𝐚𝐒, 𝐀𝐈, 𝐁𝐢𝐥𝐥𝐢𝐧𝐠)
I build scalable SaaS apps and complex backend systems, with a strong focus on Stripe billing (subscriptions, metered usage, webhooks) and real-world integrations that need to be reliable.
𝐖𝐡𝐚𝐭 𝐈 𝐰𝐨𝐫𝐤 𝐨𝐧
• Full-stack apps using Next.js and Node.js
• SaaS platforms and internal tools
• AI integrations like chatbots and workflows
• Payment systems including subscriptions and usage-based billing
• E-signature flows and document systems
𝐑𝐞𝐜𝐞𝐧𝐭 𝐟𝐨𝐜𝐮𝐬
• Built and handled complex billing logic using Stripe (subscriptions, schedules, invoices, metered usage, webhooks, edge cases)
• Worked on e-signature systems using ApiSign
• Structured backend modules for better scalability and separation
• Handled real-world edge cases and production issues
𝐓𝐞𝐜𝐡 𝐬𝐭𝐚𝐜𝐤
• Frontend: Next.js, React, TypeScript, Tailwind
• Backend: Node.js, Express
• Database: PostgreSQL, MongoDB
• ORM: Drizzle ORM
• Security: RLS (Row-Level Security)
• Integrations: OpenAI, Stripe, REST APIs
𝐇𝐨𝐰 𝐈 𝐰𝐨𝐫𝐤
• I keep things simple and clear
• I don’t over-engineer, but I don’t cut corners either
• Comfortable working solo or with a team
𝐖𝐡𝐚𝐭 𝐦𝐚𝐭𝐭𝐞𝐫𝐬 𝐭𝐨 𝐦𝐞
• Performance (fast apps)
• Stability (things don’t randomly break)
• Clean UX without unnecessary complexity
𝐋𝐞𝐭’𝐬 𝐜𝐨𝐧𝐧𝐞𝐜𝐭
If you’re building something or improving an existing system, feel free to reach out.
Portfolio: hemn.vercel.app
Hemn B.
has worked
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United Kingdom
$25/hr
100%
Job Success
$100+ earned
Start of list.
End of list.
100% Job Success · Recently built a full Stripe → Supabase credits pipeline for a UK media studio — React frontend, Node.js backend, Squarespace-embedded, delivered 5-star and on time.
I’m a full-stack JavaScript developer building production web apps with React, Next.js, Node.js, and Express. I specialise in SaaS MVPs, payment and auth integrations (Stripe, Supabase), and scalable REST APIs — from first commit to Dockerised deployment.
What I deliver:
– Full-stack web apps (React / Next.js + Node.js / Express)
– REST API development & third-party integrations (Stripe, Supabase, OpenAI, Anthropic)
– TypeScript-first, clean and maintainable code
– Dockerised, cloud-ready production deployments
– Database design & optimisation (PostgreSQL, Supabase, MongoDB)
– Web scraping & automated data pipelines in Node.js
Whether you need a custom SaaS MVP, a scalable API backend, or a payments/auth integration rescued, I deliver solutions that are secure, well-documented, and built to grow. I communicate clearly, hit deadlines, and take full ownership — from first commit to live deployment.
Let’s build something that lasts.
$22/hr
100%
Job Success
$71 earned
Available now
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I build AI-powered SaaS products, MVPs, and custom web applications for startups and businesses.
7+ years of experience with React, Next.js, Node.js, Python, PostgreSQL, and AI integrations. 200+ project successfully completed.
AI SaaS Developer | Full-Stack Engineer specializing in AI Agents, OpenAI, Claude, RAG, React, Next.js, Node.js, Python, and Startup MVPs. I help founders launch scalable AI-powered products, SaaS platforms, and mobile apps from idea to production.
I help startups and SaaS companies ship AI-powered mobile apps and full-stack MVPs, fast, clean, and production-ready. 3 apps launched with 5★ ratings and 50K+ combined downloads; now bringing the same execution standard to AI integration, LLM-powered products, and SaaS platforms.
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AI & Automation Services :
- AI chatbot & agent development (LangChain, OpenAI API, RAG pipelines)
- LLM integration into existing SaaS and web apps
- AI workflow automation with n8n and Python
- Custom GPT tools, voice AI, and document AI
- Multi-agent systems (CrewAI, AutoGen)
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Mobile App Development :
- React Native (iOS + Android) — single codebase, 40% cost saving
- MVP to App Store launch in 4–6 weeks
- FinTech budgeting app: 15K downloads, 4.9★ rating
- Health tracking app: React Native + Node.js backend
- E-commerce app: Stripe + Shopify API integration
- App Store & Play Store publishing included
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Full-Stack & SaaS MVP :
- React, Next.js, Node.js, Laravel, Python (FastAPI/Flask)
- SaaS architecture, subscription billing, multi-tenancy
- REST & GraphQL APIs, Firebase, PostgreSQL, MongoDB
- AWS, Docker, scalable backend deployment
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Best fit for:
→ Startup founders building an AI-powered product or mobile MVP
→ SaaS companies adding AI features or a mobile companion app
→ Businesses automating workflows with AI agents and LLMs
→ Teams needing a senior dev who owns the full product cycle
UK-based. Available for long-term contracts and dedicated engagements.
Let's build something worth shipping. Invite me to your project.
Thanks,
Sarpreet
Tags : AI Integration | AI Chatbot Development | OpenAI API Integration | LangChain Developer | RAG Pipeline Development | LLM Engineer | AI Agent Developer | Generative AI Developer | AI Workflow Automation | n8n Automation | AI SaaS Development | Autonomous AI Agent | Custom GPT Development | AI Automation Expert | Voice AI Agent | Multi-Agent Systems | Full Stack Developer | React Native Developer | Mobile App Developer | SaaS MVP Developer | MVP Development Next.js Developer | Node.js Developer | Python Developer | FastAPI Developer | REST API Development | TypeScript Developer | iOS Android Developer | SaaS Backend Developer | API Integration Expert | React Developer | Shopify API Developer | GraphQL Developer | MongoDB Developer | Laravel PHP Developer | Expo React Native | Push Notifications | Frontend Developer | Backend Developer | NLP Engineer | AI Copilot Development Document AI | Agent |
SaaS, PHP, React, Node.js, Claude, ChatGPT API, MERN Stack, React, Next.js, Node.js, NestJS, ExpressJS, React Native, TypeScript, JavaScript, MongoDB, MySQL, PostgreSQL, Supabase,
OpenAI API, AI Development, Node.js, RESTful API, ChatGPT API, DALL-E API, OpenAI API, GPT-4 API, AI Model Integration, Java, JavaScript
#AIDeveloper #AISaaS #GenerativeAI #OpenAI #ClaudeAI #AIAgents #RAG #LangChain #LLM #AIAutomation #MCP #PythonDeveloper #FastAPI #NextJS #ReactJS #NodeJS #ReactNative #MobileAppDevelopment #SaaSDevelopment #MVPDevelopment #FullStackDeveloper #APIIntegration #AWS #StartupDevelopment #SoftwareEngineer
Associated with
Upcode Studio
United Kingdom
$25/hr
$100+ earned
Start of list.
End of list.
Full Stack Developer with over 8 years of experience designing, developing, and maintaining secure, scalable applications across both front-end and back-end systems. Strong proficiency in React, JavaScript, Node.js, PHP, and SQL/NoSQL databases, with a track record of delivering reliable solutions in complex, high-ambiguity environments. Skilled in building RESTful APIs, implementing secure development practices, and collaborating with cross-functional teams, including UX, PMs, and non-technical stakeholders.
Summary
* Client communication to gather the requirements.
* Understand and analyze the requirements and convert the requirements from business language to technical language for developers understanding.
* Developed and architected B2B SaaS enterprise platform using Laravel, Snowflake & Power BI integration.
* Hands on experience in React JS, Node JS, PHP frameworks, jQuery, JavaScript, UI, MSSQL, Snowflake, MySQL.
* Good knowledge of Python.
* Power BI & Tableau embedded analytics.
* Experience with Agile Development.