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$22/hr
100%
Job Success
$20K+ earned
Available now
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🚀 I build production-ready SaaS platforms, internal tools, and AI-powered web applications that teams actually rely on, not prototypes that need a full rewrite six months later.
I'm Razi, a Senior Full Stack Developer with 8+ years of experience delivering scalable systems from database schema to deployed frontend. Currently serving as Director of Engineering and pursuing an MBA at LUMS, I bring both technical depth and product thinking to every engagement.
What I build:
As a Full Stack Developer I take ownership end-to-end. On the backend I design REST APIs, microservices, background workers, and database architectures using Node.js, NestJS, FastAPI, Python, and PostgreSQL. On the frontend I build clean, performant interfaces using React, Next.js, and TypeScript. I connect them through well-structured APIs, handle authentication, role-based access, Stripe payments, and deploy on AWS, GCP, or Vercel with proper CI/CD.
As a SaaS Developer I have built multi-tenant platforms, admin dashboards, CRM systems, booking platforms, and internal operations tools for startups and enterprise clients across healthcare, fintech, real estate, and logistics.
As an AI Integration specialist I add intelligent layers to existing products without rebuilding them from scratch. I integrate LLMs including GPT-4o and Claude API, build RAG pipelines for document intelligence and semantic search, and deploy multi-agent workflows that automate complex business processes. I treat AI as a production component, wrapped in validation, error handling, and cost controls, not a demo feature bolted on at the end.
How I work:
I use Claude Code daily as a force multiplier. I move fast without cutting corners on architecture or maintainability. My longest single client engagement ran over 5 years. I communicate clearly, surface blockers early, and take ownership of outcomes not just tickets.
Recent results:
Rebuilt a legacy SaaS backend reducing API response times by 40% and eliminating a recurring production incident
Built a multi-tenant operations dashboard serving enterprise clients with real-time data, role-based access, and audit logging
Integrated a RAG pipeline into an existing platform replacing a manual document review process with sub-second semantic search
Top Rated · 100% Job Success · Available full time · UTC+5
📌 Stack: React · Next.js · Node.js · NestJS · TypeScript · Python · FastAPI · PostgreSQL · MongoDB · Redis · Supabase · Flutter · AWS · GCP · Docker · Kubernetes · Stripe · OpenAI API · Claude API · LangChain · RAG · n8n
$15/hr
100%
Job Success
$100+ earned
Available now
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I’m an AI/ML Engineer with deep expertise in Python, NLP, LLM integration, and intelligent AI solutions. I design and deploy AI-powered systems such as custom chatbots, multi-agent frameworks, RAG knowledge platforms, and automated workflows that help businesses transform data into actionable insights, automate complex tasks, and improve operational efficiency.
I’m experienced in AI agent orchestration, conversational AI, NLP analytics, predictive modeling, recommendation engines, and end-to-end machine learning pipelines. I also specialize in workflow automation using n8n, Make, Zapier, GoHighLevel, and Python scripts for data processing, API integrations, and AI model deployment.
Services I Offer:
- LLM Integration with advanced models like OpenAI, Claude, Gemini, and Deepseek
- RAG Systems & Knowledge Graphs for actionable insights
- AI Agents & Multi-Agent Systems for automation and decision-making
- Custom Chatbots & Conversational AI for websites, apps, and support
- NLP & Text Analytics: summarization, sentiment analysis, entity recognition
Workflow & Automation
- Workflow Automation Platforms: n8n, Make, Zapier, GoHighLevel
- Python Automation: scripts, pipelines, API integrations, scheduling
- Data Expertise: preprocessing, feature engineering, model deployment
- Python Libraries: Pandas, NumPy, Scikit-learn, TensorFlow, PyTorch, LangChain
Why Clients Choose Me:
✅ Scalable, production-ready AI solutions
✅ Cross-domain expertise: AI + Data + Automation
✅ Fast delivery with maintainable, high-quality code
✅ Clear, proactive communication and strategic guidance
💬 Let’s build AI systems that solve real problems, automate your workflows, and deliver measurable results.
Muhammad Salal Q.
has worked
.
Ukraine
$60/hr
100%
Job Success
$30K+ earned
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Python(Django/Flask/FastAPI), JS/TS(React/Next.js), HTML5&CSS3, PostgreSQL/MySQL/Oracle(raw, SQLAlchemy/Django ORM), NumPy/(Geo)Pandas, Celery, Redis, WebSockets, Docker, git. Data structure and algorithms, designing, engineering best practice.
Technology is my craft and passion. The products that I implement are a combination of accumulated experience, innovative solutions and a pragmatic approach.
During communication with the client, I stick to the principles of high responsibility and strict following to agreements. Especially deadlines. Efficiently.
Volodymyr Z.
has worked
.
$80/hr
100%
Job Success
$500K+ earned
Available now
Offers consultations
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Need an AI pipeline or data platform built for production - not just a prototype? I ship end-to-end AI and data systems that handle real scale: 1M+ documents, 100+ production pipelines, 10x costs optimization.
12+ years building for DraftKings, DataRobot, Sift, and Sentra. Now I help companies turn AI proof-of-concepts into production systems that actually work.
Recent solutions & projects:
- Built QA framework and developer tooling for AI-powered lease extraction platform - test infrastructure for validating LLM extractions across 19 lease term categories (with 92+ test cases), plus an internal web tool for debugging, prompt reconstruction, and one-click test case generation.
- Built a custom EOR (Employer of Record) classification rules engine with LLM-generated rationales, and a conversational AI assistant in front of it that turns a plain-English scenario into a recommendation while the deterministic engine stays the source of truth.
- Built AI-powered search API with hybrid vector+semantic ranking (1M+ CV files across 6 brands)
- Re-engineered 100+ ETL pipelines - 10x infrastructure cost reduction
- Conversational analytics platform: natural language to business insights for logistics
What I Build:
1. RAG & Knowledge Systems
Production pipelines, vector database optimization (Azure AI Search), hybrid search with reranking, custom embeddings for domain-specific retrieval
2. LLM Integration
OpenAI, Anthropic, Azure OpenAI - function calling, structured outputs, agent orchestration, prompt engineering for consistent results. Frameworks: LangChain and Microsoft Agent Framework.
3. Backends & Data Platforms
FastAPI, async Python, cloud-native on AWS/Azure/GCP, data warehouses (Snowflake, BigQuery, Databricks), real-time and batch pipelines.
Tech Stack: Python, FastAPI, Docker, Kubernetes, Terraform, AWS/Azure/GCP, Databricks, Snowflake
Industries: Financial Services, Telecom, Data Security, Logistics, Legal, Recruitment
Dmytro O.
has worked
.
$16/hr
100%
Job Success
$5K+ earned
Available now
Offers consultations
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🔥 𝐅𝐮𝐥𝐥-𝐒𝐭𝐚𝐜𝐤 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐞𝐫 ⭐𝗙𝗨𝗟𝗟 𝗗𝗘𝗩𝗘𝗟𝗢𝗣𝗠𝗘𝗡𝗧 𝗖𝗬𝗖𝗟𝗘 ⭐ 𝟰+ 𝐘𝐞𝐚𝐫𝐬 𝐨𝐟 𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞 𝘂𝘀𝗶𝗻𝗴 𝗥𝗲𝗮𝗰𝘁 𝗷𝘀, 𝗝𝗮𝘃𝗮𝘀𝗰𝗿𝗶𝗽𝘁, 𝗧𝘆𝗽𝗲𝗦𝗰𝗿𝗶𝗽𝘁, 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗗𝗷𝗮𝗻𝗴𝗼, 𝗙𝗹𝗮𝘀𝗸🔥
☛ With 4+ years of extensive experience as a full-stack developer, I have successfully delivered high-performance, scalable, and user-centric applications across various industries. My expertise spans both front-end and back-end technologies, ensuring seamless development workflows and efficient API integrations.
🌐 𝐅𝐫𝐨𝐧𝐭-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐌𝐚𝐬𝐭𝐞𝐫𝐲
✅ React.js & Next.js: Used to focus on component-based architecture, state management, and server-side rendering for optimal performance.
✅ Tailwind CSS & Bootstrap: For crafting responsive, visually appealing UIs, ensuring pixel-perfect designs and mobile-first development.
✅ TypeScript & JavaScript: Proficient in using TypeScript for type-safe development, along with JavaScript for adding complex interactivity and enhancing the user experience.
✅ WebSocket Integration: Experience with Websockets for building real-time features like live chat, notifications, and streaming data, enhancing user engagement.
💻 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞
✅ Python, Django & Django Rest Framework:- Used to handle complex business logic.
✅ Flask & FastAPI: Developed lightweight, high-performance web applications using Flask and FastAPI, focusing on fast routing and minimal overhead.
✅ Database Management: Expert in PostgreSQL, MySQL, MongoDB, and Supabase. I use advanced features like query optimization, migrations, and data integrity checks.
✅ Version Control: Git, GitHub, GitLab
🔗 𝐀𝐏𝐈 𝐃𝐞𝐬𝐢𝐠𝐧 & 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧
✅ Restful APIs: I create and integrate RESTful APIs using Django Rest Framework, Flask, and FastAPI, providing efficient communication between the front-end and back-end.
✅ Third-Party API Integration: I have integrated various third-party services like payment gateways, cloud storage, and analytics tools into web applications, enhancing functionality.
✅ Real-Time Features: Leveraging WebSockets, I build real-time data streaming and communication features, from live dashboards to chat applications.
☁️ 𝐂𝐥𝐨𝐮𝐝 𝐚𝐧𝐝 𝐃𝐞𝐯𝐎𝐩𝐬 𝐏𝐫𝐨𝐟𝐢𝐜𝐢𝐞𝐧𝐜𝐲
✅ AWS | GCP | Azure: Proficient in cloud architecture, including deployment, scaling, and managing web applications on AWS, Google Cloud Platform, and Microsoft Azure.
✅ Docker & Kubernetes: I use Docker for packaging applications into lightweight containers, and I am familiar with Kubernetes for orchestrating containerized applications.
✅ CI/CD Pipelines: I build continuous integration and delivery pipelines for automatic testing, building, and deployment, ensuring fast iteration cycles and reduced downtime.
𝐖𝐡𝐲 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞?
☛ I am passionate about delivering high-quality, scalable applications that transform ideas into reality. I focus on performance optimization, security, and maintaining clean, maintainable code. With a solid understanding of the full development lifecycle, from conceptualization to deployment, I am committed to driving success for every project I undertake.
🤝 Let’s connect to bring your project to life with cutting-edge technology and industry-leading practices.
Best Regards
Vanchit
𝗧𝗲𝗰𝗵𝗻𝗶𝗰𝗮𝗹 𝗦𝗸𝗶𝗹𝗹𝘀 [𝗞𝗲𝘆𝘄𝗼𝗿𝗱𝘀]
React, React Js, React developer, React Expert, Redux, Firebase, Next.js, Next.js developer, TypeScript, TailwindCSS, Html, CSS, Javascript, Tailwind CSS, RESTful API, Redux Framework, API, front-end developer, back-end developer, full-stack developer, python developer, python expert, python django, python full stack developer, backend developer, django developer, django expert, django react, django rest framework, full stack django developer, python aws, aws
Vanchit K.
has worked
.
$35/hr
100%
Job Success
$5K+ earned
Available now
Start of list.
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I am Ali, a full-stack developer based in the UK with more than 5 years of experience building production software. Do you have an app idea that stalled because a previous developer could not finish it, or is your business still running on manual workflows, spreadsheets, and disconnected tools? That is exactly the kind of work I take on. As a full-stack developer, I ship products that are working, secure, and done right the first time, and I take a project from architecture to deployment, so you hire one engineer instead of stitching two freelancers together.
I am strong on the backend with Node.js and Python, and fully capable on the React and Next.js frontend with TypeScript. Recent production work includes PineTrader, a Next.js and Node.js trading SaaS that connects TradingView to MetaTrader 5 with Stripe billing; a Next.js LEGO buyback portal with live BrickLink pricing, automated Wise payouts, and AES-256 encryption; and custom Shopify Plus apps and themes for retailers in the US and UK, with Checkout UI Extensions, Cart Transform Functions, and Klaviyo automation.
One area where I add real value is AI. I build AI features with OpenAI and DeepSeek, including content generation, chatbots, document processing, and automation, along with custom WordPress plugins for cases where standard plugins do not fit. My core stack covers Node.js, Python (FastAPI, Flask), PHP, React, Next.js, TypeScript, Shopify Plus, Liquid, Stripe, and PostgreSQL, and I also build native mobile apps for Android and iOS.
Clients hire me when they need someone who understands the business goal behind the product, communicates clearly, and delivers software that is ready for users, investors, and growth. I hold an MSc in Cyber Security with Distinction, so every backend I build is secure by default, with prepared queries, encrypted secrets, and AES-256 encryption where it matters. Send me your brief, and I will reply with a clear scope, a realistic timeline, and any questions I have.
$20/hr
100%
Job Success
$70K+ earned
Available now
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I design and build AI-powered SaaS platforms, automation systems, and intelligent workflows that help businesses reduce manual work and scale efficiently.
My focus is on taking products from early-stage ideas to production-ready systems. I work closely with startups and product teams to build AI systems that are not just functional, but stable, maintainable, and aligned with real business use cases.
🔹 What I build
* AI SaaS platforms with structured user workflows and scalable backend systems
* RAG-based knowledge systems for internal tools, support, and data retrieval
* AI agents for automating repetitive operations and decision workflows
* Custom AI features integrated into existing web applications
🔹 Tech stack & architecture
AI / LLM
* OpenAI API, Claude, Gemini
* LangChain, LangGraph
* Retrieval-Augmented Generation (RAG)
* Vector databases and embeddings
Backend
* Python (FastAPI, Django)
* REST APIs, background jobs, async processing
Frontend
* React, Next.js, TypeScript
* Modern SaaS UI with real-time AI interactions
Infrastructure
* PostgreSQL, MongoDB, Redis
* AWS, Docker, CI/CD pipelines
🔹 Experience & work
I’ve worked on AI systems used by real users, including:
* Market intelligence platforms using RAG and vector search
* AI automation systems that significantly reduced manual workflows
* Scalable AI-backed applications handling continuous usage
My approach is always focused on building systems that work reliably in production, not just prototypes.
🔹 How I work
* Clear architecture planning before development
* MVP-first approach → then scaling and optimization
* Clean, maintainable code with proper documentation
* Transparent communication and realistic timelines
If you are building an AI product or integrating AI into your system, I can help you design and implement a solution that is stable, scalable, and production-ready.
Skills
Python, FastAPI, Django, React, Next.js, OpenAI API, LangChain, RAG, API Development, PostgreSQL, AWS, Docker
Abdul S.
has worked
.
$30/hr
100%
Job Success
$10K+ earned
Available now
Offers consultations
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I build AI agents and automation systems that run in production — not demos.
𝗥𝗲𝘀𝘂𝗹𝘁𝘀: Two completed Upwork contracts, ~$15,000 earned, 492 hours delivered across AI automation and LLM development.
𝗪𝗵𝗮𝘁 𝗜 𝘀𝗵𝗶𝗽:
→ Multi-agent systems (LangGraph, CrewAI)
→ RAG pipelines with vector databases
→ AI-powered SaaS applications
→ n8n / Make workflow automation
→ Chatbots (WhatsApp, Telegram, web)
→ Voice AI agents and computer vision systems
I handle the full stack — from Python backend (FastAPI, Django) to React/Next.js frontend, deployed on AWS with CI/CD.
𝗥𝗲𝗰𝗲𝗻𝘁 𝘄𝗼𝗿𝗸:
→ Built an end-to-end proof design automation system using computer vision, image processing, and custom APIs — 322 hours, 5-star review
→ Developed LLM and RAG systems with vector databases, fine-tuning, and production deployment on AWS — 170 hours, 5-star review
𝗠𝘆 𝘀𝘁𝗮𝗰𝗸: Python, Claude API, OpenAI API, LangChain, LlamaIndex, FastAPI, React, Next.js, Node.js, PostgreSQL, Supabase, Qdrant, Pinecone, n8n, Docker, AWS.
I work async-friendly, communicate proactively, and treat every project like a product — scoped, documented, tested, deployed. Available for both hourly contracts and fixed-price milestones.
Syed Faique A.
has worked
.
$25/hr
100%
Job Success
$50K+ earned
Available now
Offers consultations
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Need a production-ready AI system — RAG pipeline, LLM integration, or intelligent automation? I build full-stack AI applications with Python and Next.js that go live, not just demos. 6+ years, $44K+ earned on Upwork, Top Rated Plus.
I sit at the intersection of AI engineering and full-stack development — which means I don't just wire up an API call and call it an AI product. I design the data pipeline, the retrieval layer, the LLM orchestration, and the frontend interface as a single cohesive system. Most clients come to me after a previous developer delivered a fragile prototype. I deliver production systems.
My core stack: Python, FastAPI, LangChain, RAG, LLM fine-tuning, Next.js, React, Node.js, PostgreSQL, MongoDB, AWS, Azure.
Here is what I build:
Full-Stack Apps — Next.js + React frontends connected to AI-powered backends
AI Agents — WhatsApp bots, voice agents, inbound/outbound call agents, customer support automation
RAG Systems — document Q&A, PDF + SQL retrieval, enterprise knowledge bases
LLM Integrations — OpenAI, Anthropic, fine-tuning, prompt engineering, model evaluation
Backend APIs — FastAPI, REST, GraphQL, scalable Python microservices
AI Data Pipelines — ETL, scraping, clustering, vector search, resume parsing
Automations — n8n, Zapier-style workflows, social media automation
Proofs
Top Rated Plus on Upwork (top 3% of talent)
100% Job Success Score
Zapier Certified Expert | Make, n8n, Airtable integrations
Built an internal RAG chatbot at CION Investments — reduced document lookup time by ~60%
Built a voice booking platform at Yoderlay — cut booking time by ~40%
Delivered AI solutions across fintech, HR tech, hospitality, e-commerce, and recruitment
Send me a message describing your project. I respond within a few hours and can usually share a technical approach or a relevant portfolio example the same day.
EXPERTISE:
AI Automation | No-Code Development | Airtable | Zapier | Make | n8n | AI Agents | ChatGPT Integration | LLM Implementation | Workflow Automation | API Integration | Database Design | Digital Workers | Business Process Automation
$25/hr
100%
Job Success
Available now
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I build AI-powered web apps, mobile apps, and custom SaaS platforms for startups and businesses that need production-ready software — not just code. 10+ years full-stack, 100+ projects delivered, 50+ apps live on the App Store and Google Play.
✅ 100+ projects delivered across web, mobile, and SaaS
✅ 50+ apps live on App Store and Google Play
✅ 10+ years building full-stack and AI-powered products
✅ Clients across FinTech, healthcare, eCommerce, and real estate
Most clients arrive with an idea sitting in a doc or Figma file going nowhere fast — or a half-built product a previous developer left behind. Either way, I take it from there and deliver something production-ready.
— — —
📱 AI-POWERED MOBILE APPS | iOS · Android · Flutter · React Native
I build cross-platform mobile apps with AI features built into the product from day one — not bolted on at the end:
• Flutter and React Native apps deployed to App Store and Google Play
• AI-driven features: smart recommendations, natural language interfaces, conversational chatbots, and on-device intelligence
• OpenAI API and LLM integrations wired directly into your app's core functionality
• Real-time data processing, push notifications, and offline-capable architecture
• FinTech, healthcare, eCommerce, real estate, and on-demand app delivery
— — —
🌐 AI-POWERED WEB APPS | Next.js · React · Node.js · TypeScript
Scalable web applications with AI capabilities built into the architecture:
• Next.js and React frontends with server-side rendering and edge performance
• AI-powered dashboards, content generation, search, and workflow features
• ChatGPT and OpenAI API integrations as core product functionality — not demos
• Real-time features, webhooks, background jobs, and event-driven systems
• B2B portals, marketplace platforms, admin dashboards, and data-rich web products
— — —
⚙️ CUSTOM SAAS DEVELOPMENT | End-to-End Product Builds
Full-cycle SaaS development from architecture to production — not templates, not no-code:
• Multi-tenant architecture designed for scale from the first line of code
• Subscription billing with Stripe — plans, trials, upgrades, and dunning flows
• Role-based access control, team management, and granular permissions
• Admin dashboards, usage analytics, and customer-facing reporting
• SaaS MVPs taken from zero to paying customers in weeks, not months
• Existing SaaS products refactored, extended, or rescued from stalled development
— — —
🔧 TECH STACK
Frontend: React · Next.js · TypeScript · Tailwind CSS
Mobile: Flutter · React Native
Backend: Node.js · Python · REST APIs · GraphQL
AI/ML: OpenAI API · LangChain · LLM integrations · Retrieval-Augmented Generation
Database: PostgreSQL · MongoDB · Firebase · Supabase
Infrastructure: AWS · Azure · Docker · CI/CD pipelines
— — —
Every project includes 1 month of post-launch support — bug fixes, adjustments, and answers at no extra cost. I am immediately available and ready to start today.
Send me a message and let's talk through your project.
Associated with
Emizen Tech Private Limited