Talent badge filter
Skills filter
$35/hr
$1K+ earned
Start of list.
End of list.
I help businesses turn their raw data into powerful insights and intelligent solutions. With over 8 years of experience in data engineering, AI, and automation, I design and build scalable pipelines, optimize databases, automate workflows, and develop machine learning models that improve decision-making. From ETL processes, big data systems, and predictive analytics to workflow automation with n8n, Zapier, and Make, I make sure your data works for you, not against you. I build AI-powered applications such as predictive models, chatbots, recommendation systems, and real-time analytics tools that allow companies to automate tasks, integrate APIs, and stay ahead of the competition. I also create interactive dashboards and visualization systems that give teams a clear and actionable view of business performance. My focus is always on delivering practical, future-proof solutions that are easy to use, cost-effective, and aligned with business goals. I specialize in: ◾ Data Engineering: ETL pipelines, data cleaning, data transformation, real-time data processing, and database design (SQL, NoSQL, PostgreSQL, MongoDB). ◾ Big Data Tools: Spark, Hadoop, Kafka, Airflow, AWS, GCP, Azure. ◾ Automation & Integration: n8n, Zapier, Make, API automation, workflow orchestration. ◾ AI & Machine Learning: Predictive modeling, NLP, chatbots, computer vision, recommendation engines, and deep learning. ◾ Analytics & Visualization: Power BI, Tableau, Python (Pandas, NumPy, Matplotlib). 💡 What I do for clients: Build scalable data pipelines that turn raw data into actionable insights. Automate workflows and connect apps/APIs to save time and reduce costs. Develop AI/ML models that improve decision-making and user experience. Create dashboards that give clear visibility into business performance. I’ve worked with startups, enterprises, and growing businesses to unlock the power of data, AI, and automation, delivering projects and scaling existing systems. If you’re looking for someone who can design, build, and deploy data-driven, AI-powered, and automated solutions that actually solve problems, I’m here to help. ✅ On-time delivery ✅ Clear communication ✅ Scalable, future-proof solutions Let’s talk about how I can help you make the most of your data.
Rafique Adam C.
$15/hr
100% Job Success
$2K+ earned
Available now
Offers consultations
Start of list.
End of list.
Backend Developer helping SaaS startups, agencies, and growing businesses build fast, secure, and scalable backend systems, secure APIs, fix performance issues, integrate third-party services, or turn your MVP into a scalable product. Whether you need a new API, a complete backend from scratch, bug fixes, database optimization, AI integration, or ongoing development support, I focus on delivering software that's built to perform today and scale with your business tomorrow. I look at the bigger picture - performance, maintainability, security, scalability, and the user experience behind every technical decision. MY CORE SERVICES: Backend Development: • Build scalable Node.js backends from scratch • Develop secure Express.js and NestJS applications • Design backend architecture for SaaS products • Build server-side logic for custom web applications • Develop microservices and modular backend systems • Optimize backend performance and reduce server response times REST API & GraphQL Development: • Build custom REST APIs for web and mobile applications • Design scalable API architecture • Connect React, Next.js, Flutter, or mobile apps to backend APIs • Develop GraphQL APIs for modern applications • Document APIs with Swagger/OpenAPI • Fix broken APIs, authentication errors, and integration issues API Integration: • Integrate Stripe, PayPal, Twilio, SendGrid, Google Maps, Firebase, and other third-party APIs • Connect OpenAI and ChatGPT APIs to existing applications • Build webhook integrations and automation workflows • Resolve API authentication and data synchronization issues Performance Optimization & Bug Fixing: • Fix Node.js, Express.js, React, and Next.js bugs • Optimize PostgreSQL and MongoDB queries • Improve API response times • Reduce application load times • Refactor legacy codebases • Troubleshoot production issues and deployment errors Full Stack Development: • Build full-stack web applications using React and Next.js • Convert Figma designs into responsive web applications • Build dashboards, admin panels, and customer portals • Add new features to existing products • Maintain and improve legacy applications AI Integration: • Integrate OpenAI APIs into web applications • Build AI-powered chatbots and assistants • Add AI automation to existing products • Develop intelligent workflow automation features TOOLS & TECHNOLOGIES: Backend: Node.js • Express.js • NestJS • JavaScript • TypeScript • Python • FastAPI Frontend: React.js • Next.js • HTML • CSS • Tailwind CSS • Bootstrap Databases: PostgreSQL • MongoDB • MySQL • Redis • Firebase Cloud & DevOps: AWS • Docker • Vercel • Railway • Render • GitHub Actions • CI/CD Tools: Git • GitHub • Prisma • Sequelize • TypeORM • Postman • VS Code • Jira • ClickUp • Slack • Notion WHAT YOU GET: ✔ Clean, scalable, and maintainable code ✔ Clear and proactive communication ✔ Reliable delivery and realistic timelines ✔ Well-documented solutions ✔ Security-first development ✔ Long-term support after launch ✔ Strong problem-solving mindset If you're looking for Backend Developer who can build a scalable Node.js backend, develop secure REST APIs, fix performance bottlenecks, integrate third-party APIs, optimize PostgreSQL or MongoDB databases, build or improve your SaaS application or maintain and scale your existing application, I'd love to help. Click the "Invite to Job" button or send me a quick message. I'll review your requirements, suggest the best technical approach, and help you build a reliable, scalable solution that supports your business goals.
Rafique Adam C. has worked .
$25/hr
100% Job Success
$500 earned
Start of list.
End of list.
I’m a professional Full-Stack Developer with extensive experience in building modern, scalable, and secure web applications using MERN Stack (MongoDB, Express, React.js, Node.js) and Laravel/PHP. I combine technical expertise with practical business insight to deliver solutions that not only work perfectly but also help your business grow. I have a proven track record in developing high-performance web apps, SaaS platforms, dashboards, e-commerce sites, admin panels, and custom applications. I specialize in full-stack development, frontend with React.js, backend with Node.js and Laravel, and API integrations that are reliable, maintainable, and scalable. Here’s what I can do for your project: 1. Build full-stack web applications from scratch or upgrade existing ones. 2. Develop dynamic, responsive, and user-friendly frontends using React.js and modern JavaScript frameworks. 3. Design and implement robust backend systems with Node.js, Express, or Laravel. 4. Create RESTful APIs and GraphQL endpoints for seamless communication between frontend and backend. 5. Integrate third-party APIs like payment gateways (Stripe, PayPal), SMS/Email services, Firebase, and cloud services. 6. Implement secure authentication and authorization using JWT, OAuth, and Laravel Sanctum/Passport. 7. Optimize database design and queries in MySQL or MongoDB for fast, scalable applications. 8. Build admin dashboards, analytics panels, and SaaS platforms for data-driven decision making. 9. Debug, refactor, and improve performance of existing applications. 10. Deploy applications to AWS, DigitalOcean, cPanel, Heroku, or VPS environments. I am committed to writing clean, modular, and scalable code while following industry best practices. My focus is on delivering projects on time without compromising on quality. I thrive on collaboration, problem-solving, and creating solutions that exceed expectations. Why clients choose me: Expert in Full-Stack Development, MERN, React.js, Node.js, Express, MongoDB, Laravel, PHP, REST APIs, SaaS platforms. Fast, clear, and reliable communication. Strong problem-solving mindset with attention to detail. Focused on long-term results and maintainable solutions. If you are looking for a trusted, experienced Full-Stack Developer who can transform your ideas into high-quality, scalable, and modern web applications, let’s connect and bring your project to life!
Zohaib Z. has worked .
$10/hr
100% Job Success
$5K+ earned
Available now
Start of list.
End of list.
🕒 3+ 𝐲𝐞𝐚𝐫𝐬 𝐨𝐟 𝐩𝐫𝐨𝐟𝐞𝐬𝐬𝐢𝐨𝐧𝐚𝐥 𝐞𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 🕒 679+ hours on Upworks ✅ 25+ projects delivered (Websites, Backend Servers) 🔥 Skilled in scalable, secure, and high performing applications Hi there! I'm a Senior Full Stack developer, expert on Upwork, with a proven track record of delivering high impact solutions for companies. I specialize in building custom Websites based on (MVPs, SaaS, Web3). I work as a hands on technology partner, supporting every stage of the development lifecycle from concept and design to deployment and long-term maintenance. 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁: Full-Stack Development | WebDevelopment | Web Application | SaaS Development | MVP | Database Architecture | API Development | AWS | MERN | Whatsapp Bot 𝗧𝗲𝗰𝗵-𝘀𝘁𝗮𝗰𝗸: ⁃ Front-End Development: React.js, NextJs , JavaScript, TypeScript, Tailwind CSS, HTML ⁃ Back-End Development: Node.js, Express.js, NestJS ⁃ Database Management: MongoDB, MY SQL, MS SQL, DynamoDB ⁃ API Integration: RESTful APIs, REST, OpenAPI, WebSockets, Microservice ⁃ AI Integration: Open AI, Gemini , Claude ⁃ AWS Tools: EC2, S3, Sqs, Cloud Watch, DynamoDB. Lambda ⁃ Version Control: GitHub 𝗚𝗲𝘁 𝗮 𝗙𝗿𝗲𝗲 𝗪𝗲𝗯𝘀𝗶𝘁𝗲 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 + 𝗟𝗼𝗼𝗺 𝗩𝗶𝗱𝗲𝗼 𝗕𝗿𝗲𝗮𝗸𝗱𝗼𝘄𝗻 (𝘄𝗶𝘁𝗵𝗶𝗻 𝟰𝟴 𝗵𝗼𝘂𝗿𝘀)! 𝗟𝗲𝘁’𝘀 𝗱𝗶𝘀𝗰𝘂𝘀𝘀 𝘆𝗼𝘂𝗿 𝗶𝗱𝗲𝗮 𝗮𝗻𝗱 𝘁𝘂𝗿𝗻 𝗶𝘁 𝗶𝗻𝘁𝗼 𝗮 𝗽𝗲𝗿𝗳𝗲𝗰𝘁 𝗹𝗶𝘃𝗲 𝘄𝗲𝗯𝘀𝗶𝘁𝗲!
Vadym M.
$24/hr
100% Job Success
$20K+ earned
Available now
Offers consultations
Start of list.
End of list.
👋 𝗛𝗲𝗹𝗹𝗼! ✅ Full-Stack & Back-End Developer with 5+ years of experience ✅ Node.js · NestJS · Django/DRF · React · Next.js · TypeScript · PostgreSQL · Docker I build reliable, scalable web applications — from clean REST APIs and microservices to full-stack products with polished frontends. I work across the entire stack and take ownership of infrastructure too. ⚡️ 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗱𝗼 𝗳𝗼𝗿 𝘆𝗼𝘂: + Build or extend back-end APIs (NestJS, Express, Django/DRF) + Develop full-stack web applications (React, Next.js + Node.js/Django) + Set up and manage server infrastructure (Docker, VPS, Nginx, CI/CD) + Integrate third-party services and payment systems + Improve and refactor existing codebases 𝗖𝗼𝗺𝗽𝗲𝘁𝗲𝗻𝗰𝗶𝗲𝘀: ⚒️ Back-End: NestJS, Express.js, Django/DRF, Node.js, TypeScript, GraphQL, WebSockets, Celery (Beat & Worker), Redis, JWT, AWS Cognito ⚒️ Front-End: React, Next.js (SSR/SSG), Redux, Zustand, D3.js, Chart.js, styled-components, Material UI, Ant Design, SCSS/SASS ⚒️ Databases: PostgreSQL, MySQL, MongoDB, Supabase — TypeORM, Prisma, Sequelize ⚒️ DevOps & Infrastructure: Docker, Docker Compose, Nginx, PM2, GitHub Actions, GitLab CI, VPS setup & management, SSH, DNS, SSL certificates, Cloudflare ⚒️ Cloud & Storage: AWS (S3, EC2), Cloudflare R2, Firebase, Supabase, GoDaddy ⚒️ Monitoring: Sentry ⚒️ Third-Party Integrations: ❇️ Payments: Stripe, Monobank, PayPal, Webhook solutions ❇️ Messaging: SendGrid, Mailjet ❇️ Documents: PandaDoc ❇️ CMS: Strapi, Contentful ❇️ Auth: AWS Cognito, JWT, OAuth2 ❇️ AI: OpenAI API ❇️ Other: AWS Amplify, Firebase On the back end, I build production-grade REST APIs and microservices using NestJS (TypeORM, PostgreSQL, WebSockets, GraphQL, Redis) and Django/DRF (PostgreSQL, Celery for async tasks, background workers). I focus on clean architecture, performance, and maintainability — whether it's a greenfield project or extending an existing codebase. On the front end, I build responsive, performant UIs with React and Next.js — covering SSR/SSG, state management (Redux, Zustand), and third-party API integrations. For infrastructure, I handle the full DevOps cycle: Docker containerization, CI/CD pipelines (GitHub Actions, GitLab CI), Nginx reverse proxy with SSL, VPS provisioning, and cloud storage with AWS S3 or Cloudflare R2. I take pride in clear communication, clean code, and delivering work I'd be happy to put my name on. Looking forward to hearing from you! I'm ready to start 𝗔𝗦𝗔𝗣 🔥
Anna K.
$24/hr
100% Job Success
$30K+ earned
Available now
Start of list.
End of list.
React Next.js JavaScript TypeScript Node.js NestJS Flutter React Native OpenAI AWS PostgreSQL MongoDB Supabase Firebase AI SaaS Mobile Cloud MVP Development End-to-end software development for startups, SaaS companies, and growing businesses - from idea validation and MVP development to scalable platforms used by thousands of users. We are Incode Group, a software development company with 50+ engineers, 10+ years of experience, 500+ delivered projects, and long-term partnerships with startups and established businesses across the US, Europe, Australia, and the Middle East. Whether you need an MVP launched in weeks, AI-powered features, a mobile application, a dedicated development team, or a complex SaaS platform built from scratch, we provide full-cycle product development from discovery and architecture to deployment and long-term support. 🏆 𝐖𝐡𝐲 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐔𝐬 500+ successfully delivered projects 50+ engineers across web, mobile, AI, QA, UI/UX, and DevOps 10+ years of software development experience 95% of clients continue working with us beyond the initial engagement MVPs launched in as little as 4-8 weeks End-to-end ownership from planning and architecture to deployment and maintenance 💡 𝐖𝐡𝐚𝐭 𝐂𝐥𝐢𝐞𝐧𝐭𝐬 𝐇𝐢𝐫𝐞 𝐔𝐬 𝐅𝐨𝐫 ✔️ SaaS product development ✔️ AI applications, chatbots, copilots, and automation tools ✔️ Mobile app development (Flutter & React Native) ✔️ Scaling and modernizing existing platforms ✔️ Dedicated development teams and staff augmentation ✔️ Technical advisory and architecture reviews ✔️ Cloud infrastructure, DevOps, and CI/CD ✔️ Third-party API and payment integrations 📊 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐎𝐮𝐭𝐜𝐨𝐦𝐞𝐬 • Reduced infrastructure costs by up to 35% • Improved application performance by up to 60% • Automated workflows that reduced manual operations by up to 70% • Built AI-powered applications processing thousands of requests daily • Delivered MVPs that helped startups validate ideas and acquire early customers 🚀 𝐓𝐲𝐩𝐢𝐜𝐚𝐥 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲 𝐓𝐢𝐦𝐞𝐥𝐢𝐧𝐞𝐬 - MVPs & New Product Launches - typically 4-12 weeks depending on scope and integrations - Feature Development & Existing Product Improvements - usually 2-10 days per feature or 1-4 weeks for larger modules - AI-Powered Features, Chatbots & LLM Integrations - generally 1-4 weeks depending on complexity and data sources - Third-Party API & Payment Integrations (Stripe, Twilio, Shopify & more) - often 2-10 days per integration - Cross-Platform Mobile Apps (Flutter, React Native) - MVPs typically 6-16 weeks, production platforms 3-6+ months - Cloud Infrastructure, DevOps & CI/CD Setup - usually 3-10 days for initial setup - UI/UX Design, Figma Prototypes & Design Systems - commonly 1-4 weeks depending on the number of screens and flows - Legacy System Refactoring & Performance Optimization - typically 1-6 weeks depending on codebase size and technical debt 𝐈𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 𝐖𝐞 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 🏢 Real Estate - property management platforms, booking systems, rental marketplaces, CRM solutions 💰 FinTech & Financial Services - payment systems, financial dashboards, reporting platforms, internal tools 🩺 Healthcare - patient portals, healthcare management systems, telemedicine platforms, wellness applications 📚 EdTech - learning management systems, online training platforms, educational mobile applications 🤖 AI Products & Automation - chatbots, AI assistants, workflow automation, recommendation systems, AI-powered SaaS platforms 🏃 Fitness & Wellness - coaching platforms, activity trackers, fitness mobile apps, subscription-based products 🛒 E-commerce & Marketplaces - online stores, B2B marketplaces, checkout systems, payment integrations 🚚 Logistics & Transportation - fleet management, delivery platforms, route optimization, tracking systems 💼 SaaS & Business Platforms - internal tools, workflow automation, CRM systems, enterprise software ⚡ 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 Frontend React.js Next.js TypeScript JavaScript Redux Toolkit Tailwind CSS Material UI Shadcn UI Backend Node.js NestJS Express.js GraphQL REST APIs WebSockets Prisma TypeORM Drizzle ORM RabbitMQ Kafka Mobile Flutter React Native iOS Android AI & LLM OpenAI ChatGPT Anthropic Claude LangChain Pinecone RAG Systems AI Agents Prompt Engineering Databases PostgreSQL MongoDB MySQL Supabase Firebase Redis DynamoDB ClickHouse Cloud & DevOps AWS Docker Kubernetes CI/CD GitHub Actions GitLab CI Vercel Railway DigitalOcean 🤝 𝐄𝐧𝐠𝐚𝐠𝐞𝐦𝐞𝐧𝐭 𝐌𝐨𝐝𝐞𝐥𝐬 • Dedicated Developers • Dedicated Teams • Staff Augmentation • Full Product Development • Technical Advisory 🚀 𝐇𝐚𝐯𝐞 𝐚 𝐩𝐫𝐨𝐣𝐞𝐜𝐭 𝐢𝐧 𝐦𝐢𝐧𝐝? Send me your requirements, product idea, or current challenges, and we'll help you define the fastest and most reliable path from concept to launch.
Incode Group
Associated with
Incode Group
$900K+
earned
$23/hr
100% Job Success
$10K+ earned
Available now
Start of list.
End of list.
Skilled 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 Engineer. I work mainly with Microsoft tools. Create strong, growing, and fast web applications using 𝐂# and .𝐍𝐄𝐓, along with modern ways to build the front end, like 𝐀𝐧𝐠𝐮𝐥𝐚𝐫 and 𝐑𝐞𝐚𝐜𝐭. I know all parts of making an application, from how the data is stored and how it's shared, to making good-looking and easy-to-use interfaces. 𝐈 𝐡𝐚𝐯𝐞 𝐰𝐨𝐫𝐤𝐞𝐝 𝐰𝐢𝐭𝐡 𝐯𝐚𝐫𝐢𝐨𝐮𝐬 𝐟𝐢𝐞𝐥𝐝𝐬, 𝐢𝐧𝐜𝐥𝐮𝐝𝐢𝐧𝐠: 🛒 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞: I have made and improved online shops. This includes connecting payment systems (like Stripe, PayPal), making shopping carts work, and managing what is in stock. I have made these shops work better, so more people buy things. (Example: Increased average order value by 15% through personalized product recommendations.) 💳 𝐅𝐢𝐧𝐭𝐞𝐜𝐡: I have built safe money applications, like online banks, payment systems, and ways to see financial data. I made sure these followed the rules and were very secure. 🏥 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞: I have created applications that follow health rules for managing patients, booking appointments, and keeping health records. I focused on making these easy to use and keeping the data safe. 🚚 𝐋𝐨𝐠𝐢𝐬𝐭𝐢𝐜𝐬: I have designed applications for planning the best routes, tracking where things are, and managing how goods are moved. This has made deliveries much more efficient. (Example: Reduced delivery times by 20% with optimized routing algorithms.) In addition, I have built and looked after many 𝐒𝐚𝐚𝐒 applications using .NET. 🛠️ 𝐓𝐡𝐚𝐭’𝐬 𝐰𝐡𝐚𝐭 𝐈’𝐦 𝐬𝐤𝐢𝐥𝐥𝐞𝐝 𝐢𝐧: 𝐁𝐚𝐜𝐤𝐞𝐧𝐝: C#, .NET Framework, .NET Core, ASP.NET (MVC, Web API), Entity Framework, SQL Server, RESTful API design and development, Web API, gRPC, Dependency Injection, LINQ, ORM 𝐅𝐫𝐨𝐧𝐭𝐞𝐧𝐝: JavaScript, TypeScript, Angular, React, HTML5, CSS3, State Management (Redux, NgRx), UI/UX Design, Responsive Design, SPA 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞: SQL, NoSQL, Database Design, Stored Procedures, Optimization 𝐂𝐥𝐨𝐮𝐝: Azure, AWS, Docker, Kubernetes 𝐎𝐭𝐡𝐞𝐫: Git, Agile, CI/CD, Unit Testing, Microservices Architecture, WebSocket 𝐋𝐞𝐭'𝐬 𝐭𝐚𝐥𝐤 about what you need and how my skills can help you succeed. Please contact me to discuss your project! 𝐁𝐞𝐬𝐭 𝐰𝐢𝐬𝐡𝐞𝐬, 𝐎𝐫𝐞𝐬𝐭 Below are mentioned keywords so you could find me easier :) .NET Core, .NET Framework, .NET Web API, .NET to Laravel migration projects, AI App Development, AI design tools, API, API Development, API Integration, API microservices, ASP.NET, ASP.NET 4.8 Web Forms, ASP.NET Core, ASP.NET MVC, ASP.NET Web API, Angular, Angular 15+, AngularJS, Auth0, Blazor, Bootstrap, Bruno, C#, C++, CSS, CSS3, Database Design, Database Development, Database Optimization, Desktop Application, Docker, Domain-Driven Design, Entity Framework, Excellent communication and collaboration abilities, Figma, Sketch, or similar, Front-End Development, Full-Stack Development, GDPR, Google Calendar API, GraphQL, HTML, HTML5, JSON, Java, JavaScript, Microservice, Microsoft Azure, Microsoft IIS, Microsoft SQL Server, Microsoft SQL Server Programming, Microsoft Visual Studio, MongoDB, MySQL, Network programming, Node.js, Nuxt.js, PHP, PostgreSQL, Proven track record of large-scale platform redesign projects, Python, QWBC, QuickBooks Enterprise, RESTful API, React, React Native, Responsive Design, Salesforce App Development, Salesforce Lightning, SEO optimization, Software Architecture & Design, SQL, Strong analytical and problem-solving skills, Telerik, TypeScript, UX & UI, User Interface Design, VB.NET, Web Application, Web Design, Web Development, Web development principles, Windows App Development, XML, Adobe Photoshop, Amazon EC2, Amazon Web Services, Azure DevOps, jQuery, backend.
Inforce.digital
Associated with
Inforce.digital
$90K+
earned
Wasim S.
$100/hr
100% Job Success
Available now
Offers consultations
Start of list.
End of list.
𝗘𝘅-𝗝𝘂𝘀𝘁𝗘𝗮𝘁 | 𝗘𝘅-𝗦𝘁𝗮𝗽𝗹𝗲𝘀 | 𝗘𝘅-𝗙𝗶𝗻𝘇𝗹𝘆 | 𝗧𝗼𝗽 𝟭% 𝗨𝗽𝘄𝗼𝗿𝗸 𝗧𝗮𝗹𝗲𝗻𝘁 | 𝗕𝟮𝗕 & 𝗕𝟮𝗖 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲 𝗦𝗮𝗮𝗦 | 𝗖𝗹𝗼𝘂𝗱 & 𝗗𝗶𝘀𝘁𝗿𝗶𝗯𝘂𝘁𝗲𝗱 𝗦𝘆𝘀𝘁𝗲𝗺𝘀 | 𝗕𝘂𝗶𝗹𝘁 𝗦𝗼𝗳𝘁𝘄𝗮𝗿𝗲 𝗳𝗼𝗿 $𝟮𝗕+ 𝗘𝗻𝘁𝗲𝗿𝗽𝗿𝗶𝘀𝗲𝘀 I optimize backend architecture, infrastructure cost, database performance, and cloud security for high-growth SaaS platforms. Previously Senior Engineer at JustEat, Staples, and Finzly. 9+ years building production systems at scale, supporting 100k+ active users. I design systems that directly improve business margins through performance, reliability, and cost efficiency. Impact: -42% Cloud Spend | 94% Faster Data Pipelines | $2B+ processed on systems I helped design and operate. 𝐈𝐍-𝐇𝐎𝐔𝐒𝐄 𝐒𝐀𝐀𝐒 𝐌𝐈𝐍𝐃𝐒𝐄𝐓 & 𝐓𝐎𝐓𝐀𝐋 𝐎𝐖𝐍𝐄𝐑𝐒𝐇𝐈𝐏 I operate like a technical co-founder, not a ticket-based freelancer. I take end-to-end ownership of architecture, scalability, and delivery. You define the business goal, and I design and implement the backend system to achieve it with minimal operational overhead and long-term scalability. From MVP to millions of users, I make architecture decisions based on performance, cost efficiency, and maintainability. 𝐏𝐄𝐑𝐅𝐎𝐑𝐌𝐀𝐍𝐂𝐄 & 𝐃𝐀𝐓𝐀 𝐄𝐍𝐆𝐈𝐍𝐄𝐄𝐑𝐈𝐍𝐆 If your system is slow or your cloud bill is increasing, I refactor architecture for both performance and cost efficiency. ◆ At Staples, reduced a core data pipeline from 90 minutes to 5 minutes (94% improvement) ◆ Optimized backend systems using caching, indexing, Kafka, and Redis to achieve millisecond-level latency ◆ Refactored legacy systems into scalable event-driven architectures where needed 𝐑𝐀𝐏𝐈𝐃 𝐌𝐕𝐏 𝐃𝐄𝐕𝐄𝐋𝐎𝐏𝐌𝐄𝐍𝐓 (𝐀𝐈 𝐀𝐂𝐂𝐄𝐋𝐄𝐑𝐀𝐓𝐄𝐃) Need to launch fast? I combine AI-assisted frontend generation with production-grade backend architecture. Using tools like Lovable, Bolt.new, v0, Supabase, and Cursor to accelerate UI development, while I design and implement secure, scalable AWS backends underneath. 𝐈𝐍𝐕𝐄𝐒𝐓𝐎𝐑-𝐑𝐄𝐀𝐃𝐘 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 & 𝐂𝐎𝐌𝐏𝐋𝐈𝐀𝐍𝐂𝐄 Preparing for funding rounds or enterprise clients: ◆ Architecture audits to identify risks, bottlenecks, and cost inefficiencies ◆ Compliance-ready systems aligned with HIPAA, GDPR, SOC2, and PCI-DSS ◆ Clear technical documentation for investor and enterprise due diligence 𝐖𝐇𝐀𝐓 𝐈 𝐃𝐄𝐋𝐈𝐕𝐄𝐑 ◆ Cost-efficient backend systems optimized for real production workloads ◆ Scalable architectures designed for long-term product growth ◆ High-availability systems built for peak load reliability ◆ AI-integrated backend systems using OpenAI and AWS Bedrock 𝐑𝐄𝐂𝐄𝐍𝐓 𝐂𝐀𝐒𝐄 𝐒𝐓𝐔𝐃𝐘 A fintech platform was failing during traffic spikes, causing failed transactions and rising infrastructure costs. I re-architected their backend into a scalable event-driven system, optimized APIs, and removed database bottlenecks. Result: handled a 300% traffic surge with zero downtime and reduced AWS costs by 42% within one month. 𝐓𝐄𝐂𝐇 𝐒𝐓𝐀𝐂𝐊 𝐀𝐓 𝐀 𝐆𝐋𝐀𝐍𝐂𝐄 Languages: Java (Spring Boot), Node.js (NestJS), Python Cloud/Infra: AWS (Lambda, ECS/Fargate, DynamoDB, RDS, EventBridge, S3), Terraform, CDK etc... AI: OpenAI, AWS Bedrock, LangChain etc... Data: Redis, Kafka, Supabase etc... Tools: Lovable, Bolt.new, v0, Cursor base44, claude etc.. 𝐂𝐋𝐎𝐔𝐃𝐅𝐋𝐀𝐑𝐄 𝐄𝐃𝐆𝐄 & 𝐒𝐄𝐑𝐕𝐄𝐑𝐋𝐄𝐒𝐒 Cloudflare Workers (APIs), R2 (storage), D1/KV (data), Queues/Durable Objects (async), CDN/WAF etc... 𝐈𝐍𝐃𝐔𝐒𝐓𝐑𝐈𝐄𝐒 Fintech (PCI/GDPR), Healthcare (HIPAA), E-commerce, Logistics, Marketplaces 𝐑𝐄𝐀𝐃𝐘 𝐓𝐎 𝐓𝐀𝐊𝐄 𝐘𝐎𝐔𝐑 𝐀𝐑𝐂𝐇𝐈𝐓𝐄𝐂𝐓𝐔𝐑𝐄 𝐒𝐄𝐑𝐈𝐎𝐔𝐒𝐋𝐘? If you're building a serious SaaS product, you don’t just need code, You need architecture that scales, performs, and stays cost-efficient under real production load. Send 2–3 time slots, and I’ll review your system and suggest an architecture approach.
$15/hr
$400+ earned
Start of list.
End of list.
I bring industry-level, hands-on experience delivering production-ready full stack solutions, from backend architecture and infrastructure to frontend implementation and deployment. Currently at QuanTrust PKI, I build and maintain two live production systems: a digital signing server processing 5 million+ successful transactions, supporting cryptographic signing and verification of Word documents, PDFs, executables (EXE, DLL, JAR, APK), and JSON payloads, and a multi-tenant, licence-based mail server platform with hierarchical admin controls, domain provisioning, and user management. In parallel, I work as a DevOps Engineer at Aerdrya, owning end-to-end AWS infrastructure for a remote-first production environment, ECS, ECR, VPC, ALB, S3, Route 53, IAM, and Cognito — alongside CI/CD pipeline automation and frontend code reviews. What I bring to a project: - Designed scalable architectures and clean software design patterns across backend and infrastructure layers - Implemented secure, responsive web apps using modern UI/UX practices and Figma prototypes - Built and maintained robust codebases, handled bug fixes, and ensured high-quality delivery using Git and GitHub workflows - Automated CI/CD pipelines for seamless deployments using GitHub Actions and cloud-native tooling - Worked across AWS (ECS, ECR, Lambda, Cognito, DynamoDB, IAM, VPC, ALB) and Azure environments - Integrated OAuth2.0, AWS Cognito, Keycloak, and PKI-based authentication for secure, role-based access management - Delivered solutions using MongoDB, MariaDB, MySQL, and DynamoDB, with a strong focus on scalable database design and management - Dockerized full-stack apps for deployment across multiple environments - Built responsive frontends and cross-platform mobile apps using React.js, Next.js, TailwindCSS, and React Native - Debugged and resolved production incidents through systematic root-cause analysis, minimising downtime Portfolio Site — A Next.js portfolio with a working backend-integrated contact form, live at muhammad-mahdi.vercel.app. I'm not just building apps, I'm building systems that scale, heal, and evolve.
Gabriel D.
$16.73/hr
93% Job Success
Available now
Offers consultations
Start of list.
End of list.
𝔹𝕦𝕚𝕝𝕕𝕚𝕟𝕘 𝕒𝕟 𝕄𝕍ℙ 𝕚𝕤 𝕖𝕒𝕤𝕪. 𝔹𝕦𝕚𝕝𝕕𝕚𝕟𝕘 𝕠𝕟𝕖 𝕥𝕙𝕒𝕥 𝕨𝕠𝕟'𝕥 𝕟𝕖𝕖𝕕 𝕒 𝕔𝕠𝕞𝕡𝕝𝕖𝕥𝕖 𝕣𝕖𝕨𝕣𝕚𝕥𝕖 𝕤𝕚𝕩 𝕞𝕠𝕟𝕥𝕙𝕤 𝕝𝕒𝕥𝕖𝕣 𝕚𝕤𝕟'𝕥. I'm Gabriel, a Full Stack Developer specializing in React, Next.js, Supabase, PostgreSQL, Node.js, and AI-powered web applications. I help startups, founders, and growing businesses build secure, scalable SaaS platforms, AI products, customer portals, dashboards, and custom web applications that are ready for production from day one. Whether you're validating an idea, replacing legacy software, or scaling an existing platform, I build software that's fast, maintainable, and designed for long-term growth, not quick fixes that become expensive later. Many clients come to me after a previous developer disappeared mid-project, delivered code that nobody else could maintain, or built an MVP that started breaking as users increased. My approach is different. I understand the business first, design the architecture second, then build clean, production-ready software that your team can confidently grow. ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑾𝑯𝑨𝑻 𝑰 𝑩𝑼𝑰𝑳𝑫 ━━━━━━━━━━━━━━━━━━━━━━━ ➤ SaaS Platforms ➤ AI Applications & AI-Powered Workflows ➤ MVP Development ➤ Client Portals ➤ Admin Dashboards ➤ Internal Business Tools ➤ CRM Systems ➤ Marketplaces ➤ Booking Platforms ➤ Subscription-Based Applications ➤ Custom Web Applications ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑴𝒀 𝑫𝑬𝑽𝑬𝑳𝑶𝑷𝑴𝑬𝑵𝑻 𝑨𝑷𝑷𝑹𝑶𝑨𝑪𝑯 ━━━━━━━━━━━━━━━━━━━━━━━ Good software starts with good architecture. Before writing production code, I design the application's data model, authentication flow, permissions, billing logic, and scalability strategy. This prevents costly rewrites, security issues, and performance bottlenecks as your product grows. I write clean, maintainable code that another developer can confidently work with long after launch. ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑺𝑬𝑹𝑽𝑰𝑪𝑬𝑺 𝑰 𝑶𝑭𝑭𝑬𝑹 ━━━━━━━━━━━━━━━━━━━━━━━ ➤ Full Stack Web Development ➤ React.js Development ➤ Next.js Development ➤ Supabase Development ➤ PostgreSQL Database Design ➤ Node.js & NestJS Backend Development ➤ REST API & GraphQL Development ➤ AI Integration (OpenAI APIs) ➤ Authentication & Authorization ➤ Stripe Subscription Billing ➤ Multi-Tenant SaaS Architecture ➤ Real-Time Applications ➤ Third-Party API Integrations ➤ Performance Optimization ➤ Bug Fixing & Feature Development ➤ Deployment & CI/CD ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑻𝑬𝑪𝑯 𝑺𝑻𝑨𝑪𝑲 ━━━━━━━━━━━━━━━━━━━━━━━ Frontend: Next.js · React · TypeScript · JavaScript (ES6+) · Tailwind CSS · shadcn/ui · HTML5 · CSS3 · Redux · Zustand Backend: Node.js · NestJS · Express.js · REST API · GraphQL · WebSockets Database: PostgreSQL · Supabase · Prisma · MongoDB · Redis Auth & Security: OAuth 2.0 · JWT · Row Level Security (RLS) · RBAC AI & Integrations: OpenAI API · AI Chatbots · AI Automation · AI Workflows · Stripe · Twilio · SendGrid · Webhooks Payments & Integrations: Stripe · Twilio · SendGrid · OpenAI API · Webhooks DevOps & Deployment: Docker · Vercel · Railway · Render · AWS · CI/CD · Git/GitHub Architecture: Multi-Tenant Systems · Microservices · Serverless Functions · Edge Functions ━━━━━━━━━━━━━━━━━━━━━━━ 🔷𝑾𝑯𝑶 𝑰 𝑾𝑶𝑹𝑲 𝑾𝑰𝑻𝑯 ━━━━━━━━━━━━━━━━━━━━━━━ ➤ Startup Founders ➤ SaaS Companies ➤ Small & Medium Businesses ➤ Agencies ➤ Product Teams ➤ Entrepreneurs Launching MVPs Whether you're starting from an idea, improving an existing product, or rescuing an unfinished project, I can help you deliver software that's built for real users, not just demos. ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑾𝑯𝒀 𝑪𝑳𝑰𝑬𝑵𝑻𝑺 𝑾𝑶𝑹𝑲 𝑾𝑰𝑻𝑯 𝑴𝑬 ━━━━━━━━━━━━━━━━━━━━━━━ ➤ Clean, maintainable code ➤ Scalable architecture ➤ Clear communication ➤ Fast response times ➤ Security-first development ➤ Business-focused solutions ➤ Long-term thinking instead of short-term shortcuts I don't just build features, I build products that are easier to maintain, easier to scale, and easier for your business to grow around. ━━━━━━━━━━━━━━━━━━━━━━━ 🔷 𝑳𝑬𝑻'𝑺 𝑩𝑼𝑰𝑳𝑫 𝑺𝑶𝑴𝑬𝑻𝑯𝑰𝑵𝑮 𝑮𝑹𝑬𝑨𝑻 ━━━━━━━━━━━━━━━━━━━━━━━ If you're looking for a React, Next.js, Supabase, or Full Stack Developer who understands SaaS architecture, AI integrations, and scalable product development, let's talk. Send me your project details, and I'll review your requirements, identify potential technical risks, and recommend the most practical approach, even before we start working together.