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$39/hr
100%
Job Success
$100K+ earned
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📌 I help companies design, build, and scale complex software products - from AI-powered MVPs to enterprise-grade platforms used by thousands of users.
I represent LITSLINK, a product-oriented development company with 10+ years on Upwork, $30M+ earned, and 800,000+ hours delivered across startups and enterprises worldwide.
We don’t just “write code.”
We solve business problems with technology, focusing on scalability, reliability, and long-term ROI.
What you can expect working with me:
✔ Clear technical ownership - from discovery to production
✔ Senior-level architecture decisions (not trial-and-error delivery)
✔ Transparent communication and predictable execution
✔ Dedicated engineering teams, not freelancers stitched together
✔ A strong focus on outcomes, not just features
Most clients come to us when:
- An MVP must be production-ready, not experimental
- AI features must actually work in real business workflows
- Existing systems need modernization without breaking operations
- Internal teams are overloaded or lack deep AI / DevOps expertise
Core Expertise:
🧠 AI & Data
- Generative AI (GPT-4 / GPT-4o / GPT-5 / LLMs)
- NLP, Computer Vision, Recommendation Systems
- RAG pipelines, vector databases, embeddings
- MLOps, model deployment & monitoring
- AI-powered automation and analytics
🧱 Backend & Architecture
- Python, Node.js, Ruby, Java, Go
- Microservices & monolith modernization
- REST / GraphQL APIs
- High-load & distributed systems
🖥 Frontend
- React, Angular, Vue, Ember
- Cross-platform apps (Flutter, React Native)
- Enterprise UI systems and dashboards
📱 Mobile
- iOS & Android (native)
- Cross-platform mobile solutions
- Performance-focused mobile architectures
☁️ DevOps & Cloud
- AWS, GCP, DigitalOcean
- Docker, Kubernetes
- CI/CD (GitLab, Jenkins)
🎨 UX / UI
- Figma, Adobe Suite
- UX research, MVP validation
- User journeys & conversion-driven design
I helped multiple clients launch AI-powered products from MVP to production, reducing time-to-market by 30–45% through clear discovery and architecture planning and enabled startups to scale engineering capacity quickly by assembling and managing dedicated teams of 3-20 engineers, without sacrificing code quality or delivery predictability.
Also, while having an experience of delivery for platforms with 100K+ active users, we can ensure stable performance, monitoring, and zero critical downtime at launch.
Improving infrastructure efficiency and cloud cost control (while achieving 20-35% reduction in operational costs through optimized cloud architecture and CI/CD pipelines) is LITSLINK expertise in their software products development.
If you’re looking for a reliable technology partner who can take ownership of complex software initiatives, LITSLINK is built exactly for that. We combine AI and full-stack software development expertise, strong engineering culture, and proven delivery processes to turn ambitious ideas into production-ready, scalable products.
Whether you’re validating an MVP, scaling an existing product, or modernizing critical systems, we focus on clarity, predictability, and measurable results.
Start with a conversation, and we’ll quickly assess your goals and opportunities, while suggesting a clear, practical path forward.
Olga Z.
has worked
.
$30/hr
93%
Job Success
$60K+ earned
Available now
Offers consultations
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What I have shipped:
GPT-4 AI scoring pipeline processing 52,000+ users with zero manual review, fully automated input to result (Do Something Else AI, live)
Agentic financial data platform with LangChain AI agents reconciling and closing records across 10+ enterprise systems (Safebooks AI, live)
eCommerce inventory automation SaaS eliminating manual stock management, fully integrated with Shopify API (Stratagem IMS, live)
AI recruitment matching system automating doctor-to-hospital scoring and interview scheduling (Medtrixo, live)
I replace manual business workflows with GPT-4 and LangChain automation pipelines that run in production permanently. 9+ years at the intersection of AI agent development, workflow automation, and full-stack delivery across FinTech, healthcare, and eCommerce.
No templates. No demos. Production-grade pipelines only.
My automation stack:
n8n, Zapier, Make, webhook architecture, multi-step pipeline design, API orchestration, trigger-based automation
AI and LLM engineering:
OpenAI API, GPT-4, LangChain, LangGraph, RAG pipeline design, Pinecone, AI agent development, structured outputs
Full-stack delivery:
React, Next.js, Node.js, Python, FastAPI, TypeScript, REST APIs, PostgreSQL, MongoDB
What I build for you:
n8n, Zapier, and Make automation pipelines mapped to your actual workflow, wired into production, not a template
GPT-4 and LangChain integrations: document extraction, classification, auto-routing, and response pipelines built into real business logic
AI SaaS platforms: auth, billing, dashboards, and LLM features, production-ready from day one
RAG and knowledge base systems: GPT-4 connected to your internal docs, CRM data, or product knowledge
How I work:
Process mapping before pipeline design. I document your workflow, tools, triggers, data flow, and failure points before writing a single node or line of code. Every automation I ship is tested on live data and handed off with a walkthrough so your team can maintain it without me.
Who I work with:
Operations managers and founders whose teams are still doing manually what should run automatically. Product teams adding AI automation to a live platform. Companies that have hit the ceiling on Zapier templates and need custom logic built properly.
If your team is still manually doing something that should run automatically, message me today. I will map your workflow and tell you exactly what to build, free, before we start anything.
Tahir M.
has worked
.
$25/hr
100%
Job Success
$30K+ earned
Start of list.
End of list.
⚡ I'm your guy - here's why:
𝐀𝐢𝐫𝐭𝐚𝐛𝐥𝐞 𝐄𝐱𝐩𝐞𝐫𝐭 | 𝗚𝗼𝗵𝗶𝗴𝗵𝗹𝗲𝘃𝗲𝗹 𝗘𝘅𝗽𝗲𝗿𝘁 | 𝗦𝗼𝗳𝘁𝗿 𝗘𝘅𝗽𝗲𝗿𝘁 | 𝗠𝗮𝗸𝗲 & 𝗭𝗮𝗽𝗶𝗲𝗿 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 𝗘𝘅𝗽𝗲𝗿𝘁 | 𝗧𝗼𝗽-𝗥𝗮𝘁𝗲𝗱 𝗼𝗻 𝗨𝗽𝘄𝗼𝗿𝗸
📊 𝟰𝟬+ 𝗖𝗹𝗶𝗲𝗻𝘁𝘀 | 𝟭𝟬𝟬+ 𝗔𝗽𝗽𝘀 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗲𝗱 | 𝟲+ 𝗬𝗲𝗮𝗿𝘀 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 | 𝟭𝟬𝟬% 𝗝𝗼𝗯 𝗦𝘂𝗰𝗰𝗲𝘀𝘀
🌟 Certified 𝗔𝗶𝗿𝘁𝗮𝗯𝗹𝗲 and 𝗦𝗼𝗳𝘁𝗿 🌟
🌟 Certified 𝗠𝗮𝗸𝗲 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 and Experts in 𝗭𝗮𝗽𝗶𝗲𝗿 🌟
🌟 Certified Web Developer ( 𝗦𝗵𝗼𝗽𝗶𝗳𝘆, 𝗪𝗼𝗿𝗱𝗣𝗿𝗲𝘀𝘀, 𝗪𝗲𝗯𝗙𝗹𝗼𝘄 ) 🌟
✨ Put Programmable Productivity to work for YOU!
✨ Expert in Automation + AI, APIs & Apps (no-code/low-code).
✨ Helping users save 'Millions of Minutes' with tips, tutorials & templates.
🌟𝗦𝗣𝗘𝗖𝗜𝗔𝗟𝗜𝗭𝗔𝗧𝗜𝗢𝗡𝗦🌟
• 🚀 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗲𝗱 𝗔𝗜: ChatGPT, OpenAI, Gemini AI
• ⚙️ 𝗢𝗽𝗲𝗿𝗮𝘁𝗶𝗼𝗻𝘀: APIs, Automation, Configs, Funnels, Integrations, Make (formerly Integromat), Low-Code, No-Code, Optimization, Processes, Troubleshooting, Webhooks, Workflows, Zapier
• 📊 𝗖𝗥𝗠 𝗖𝗼𝗻𝗳𝗶𝗴𝘂𝗿𝗮𝘁𝗶𝗼𝗻 / 𝗠𝗮𝗿𝗸𝗲𝘁𝗶𝗻𝗴 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 / 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗠𝗮𝗻𝗮𝗴𝗲𝗺𝗲𝗻𝘁: Airtable, Pipedrive, Mailchimp, ActiveCampaign, Trello, Twilio, Typeform, Jotform, Unbounce, ClickFunnels, Shopify, WordPress, Asana, ClickUp, HubSpot, Zoho, Notion, Fillout, miniExtensions + 100 more apps!
•🌐 𝗚 𝗦𝘂𝗶𝘁𝗲 / 𝗚𝗼𝗼𝗴𝗹𝗲 𝗪𝗼𝗿𝗸𝘀𝗽𝗮𝗰𝗲: Sheets, Docs, Forms, Slides, Drive, Calendar, Contacts, Tasks
• 📈 𝗠𝗶𝗰𝗿𝗼𝘀𝗼𝗳𝘁 𝗢𝗳𝗳𝗶𝗰𝗲 𝟯𝟲𝟱: Outlook, Word, Excel (formulas, formatting, functions)
𝗔𝗯𝗼𝘂𝘁 𝗠𝗲:
• 𝗧𝗲𝗰𝗵-𝗢𝗿𝗶𝗲𝗻𝘁𝗲𝗱: Always on top of the latest technology trends.
• 𝗜𝗻𝗾𝘂𝗶𝘀𝗶𝘁𝗶𝘃𝗲 𝗯𝘆 𝗡𝗮𝘁𝘂𝗿𝗲: Constantly seeking new knowledge and skills.
• 𝗠𝗲𝘁𝗵𝗼𝗱𝗶𝗰𝗮𝗹 𝗔𝗽𝗽𝗿𝗼𝗮𝗰𝗵: Thorough and organized in every project.
• 𝗕𝗮𝗹𝗮𝗻𝗰𝗲𝗱 𝗖𝗿𝗲𝗮𝘁𝗶𝘃𝗶𝘁𝘆 𝗮𝗻𝗱 𝗟𝗼𝗴𝗶𝗰: Combining creative and analytical thinking for optimal solutions.
• 𝗦𝗼𝗹𝘂𝘁𝗶𝗼𝗻 𝗦𝗲𝗲𝗸𝗲𝗿 𝗮𝗻𝗱 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝗼𝗹𝘃𝗲𝗿: Dedicated to finding smart solutions for any challenge.
💡 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲:
• 𝗣𝗿𝗼𝘃𝗲𝗻 𝗦𝘂𝗰𝗰𝗲𝘀𝘀: 6+ years of experience with a stellar 100% Job Success Score on Upwork.
• 𝗖𝗹𝗶𝗲𝗻𝘁-𝗖𝗲𝗻𝘁𝗿𝗶𝗰 𝗙𝗼𝗰𝘂𝘀: Committed to understanding your unique needs and exceeding expectations.
• 𝗩𝗲𝗿𝘀𝗮𝘁𝗶𝗹𝗲 𝗜𝗻𝗱𝘂𝘀𝘁𝗿𝘆 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲:Expertise across Fashion, Food, Health, Beauty, Jewelry, Sports, Electronics, and more.
• 𝗖𝗼𝗻𝘁𝗶𝗻𝘂𝗼𝘂𝘀 𝗜𝗻𝗻𝗼𝘃𝗮𝘁𝗶𝗼𝗻: Passionate about learning new skills and staying ahead of industry trends to provide cutting-edge solutions.
🎁 𝗖𝗼𝗺𝗽𝗹𝗶𝗺𝗲𝗻𝘁𝗮𝗿𝘆 𝗖𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻𝘀
𝙄 𝙤𝙛𝙛𝙚𝙧 𝙘𝙤𝙢𝙥𝙡𝙞𝙢𝙚𝙣𝙩𝙖𝙧𝙮 𝙘𝙤𝙣𝙨𝙪𝙡𝙩𝙖𝙩𝙞𝙤𝙣𝙨 𝙖𝙣𝙙 𝙖𝙢 𝙙𝙚𝙙𝙞𝙘𝙖𝙩𝙚𝙙 𝙩𝙤 𝙥𝙧𝙤𝙫𝙞𝙙𝙞𝙣𝙜 𝙨𝙢𝙖𝙧𝙩 𝙨𝙤𝙡𝙪𝙩𝙞𝙤𝙣𝙨 𝙛𝙤𝙧 𝙮𝙤𝙪𝙧 𝙗𝙪𝙨𝙞𝙣𝙚𝙨𝙨 𝙣𝙚𝙚𝙙𝙨. 𝙇𝙚𝙩'𝙨 𝙬𝙤𝙧𝙠 𝙩𝙤𝙜𝙚𝙩𝙝𝙚𝙧 𝙩𝙤 𝙚𝙣𝙝𝙖𝙣𝙘𝙚 𝙮𝙤𝙪𝙧 𝙤𝙥𝙚𝙧𝙖𝙩𝙞𝙤𝙣𝙨 𝙖𝙣𝙙 𝙖𝙘𝙝𝙞𝙚𝙫𝙚 𝙮𝙤𝙪𝙧 𝙜𝙤𝙖𝙡𝙨!
Thank you for visiting my profile 🙂
𝗔𝘃𝗲𝘀𝗵 𝗦𝗵𝗮𝗶𝗸𝗵
$30/hr
98%
Job Success
$80K+ earned
Available now
Offers consultations
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🚀 Top Rated Plus | 98%+ Job Success | $80K+ Earned | 3,000+ Hours | ✅ Available to start immediately.
⚡️I'm a dynamic Senior Full Stack AI Developer specializing in Next.js, React, Node.js, TypeScript, MERN, and scalable SaaS applications. Expert in Web and Mobile Development with over 5+ years of experience in React Native, Next, MERN stack. Dedicated to bringing your ideas to life with the latest and most efficient innovative technologies, I can offer my services to clients worldwide, focusing on innovation and user eye-catching user freindly experience.
Top Rated Plus Full Stack Engineer with 80k+ earnings specializing in scalable SaaS applications using Next.js, React, Node.js, AI integrations, and modern cloud architecture.
I help startups and businesses build fast, modern, high-performance web platforms that are designed for real-world scale, maintainability, and long-term growth.
I’ve worked on long-term production applications (600+ hours), SaaS platforms, AI-powered systems, dashboards, booking platforms, and scalable APIs used by real businesses and growing startups.
💼 What I can help you with:
• Full Stack Web Development (Next.js, React, Node.js, MERN)
• SaaS Application Development
• AI Integrations (OpenAI, ChatGPT, AI Agents)
• API Development & Third-Party Integrations
• Frontend Performance Optimization
• Backend Architecture & Scalability
• Bug Fixing, Refactoring & Maintenance
🔥 Recent Highlights:
• Built and maintained a large-scale booking platform (600+ hours)
• Successfully delivered multiple 5⭐ projects with excellent client feedback
• Developed scalable production applications for startups and businesses
• Long-term collaboration with multiple active clients
🤝 Why clients work with me:
• Clear communication and fast turnaround
• Clean, scalable, production-ready code
• Strong focus on performance and maintainability
• Reliable long-term technical support
• Ability to work independently and take ownership
🛠 AI-Powered Development Tools & Automation:
• Cursor, Claude Code, GitHub Copilot
• ChatGPT, v0.dev, Bolt.new
• n8n, Zapier, Make (Integromat)
• AI Agent & MCP Server Integrations
📩 If you’re looking for a senior developer who can build, optimize, and scale modern web applications efficiently, let’s connect.
#FullStackDeveloper #FullStackWebDeveloper #FullStackDevelopment #WebDeveloper #WebDevelopment #WebDesign #WebsiteDesign #WebApplications #Reactjs #ReactDeveloper #ReactNode #ReactRedux #ReactNative #ReactNativeDeveloper #JavaScript #JavaScriptDeveloper #JavaScriptExpert #JavaScriptReact #jQuery #ProfessionalEngineer #TypeScript #ReactTypeScript #AngularTypeScript #Nodejs #NodeDeveloper #HTMLDeveloper #HTML5 #HTMLCSS #HTMLCSSJavaScript #PSDToHTML #BackendDeveloper #BackendEngineer #Expressjs #MobileApp #MobileDeveloper #MobileAppDevelopment #MobileAppDeveloper #MobileDevelopment #AIDeveloper #AIDevelopment #SCSS #API #APIDevelopment #ExpertWebAndMobile #Nextjs #MERN #MERNStack #SoftwareEngineer #FrontendDeveloper #BackendDevelopment #ResponsiveWebDesign #CustomWebApps #CrossPlatformApps #RESTAPI #GraphQL #MongoDB #Express #Redux #TailwindCSS #SaaSDeveloper #AIIntegration
Hamza J.
has worked
.
$30/hr
100%
Job Success
$300K+ earned
Start of list.
End of list.
Hi,
I'm Pankaj. I'm a passionate Full-Stack Developer and AI Enthusiast with expertise in building high-quality software solutions. With a strong background in both front-end and back-end technologies, I specialize in creating powerful, scalable, and efficient applications tailored to meet your business needs.
Here’s what I bring to the table:
🔹 Ruby on Rails Development
I craft robust, maintainable, and high-performing web applications using Ruby on Rails. From database architecture to RESTful APIs, I ensure seamless backend functionality.
🔹 Node.js Expertise
As a Node.js developer, I build fast, scalable, and secure server-side applications. I can handle complex backend logic while ensuring optimal performance for your applications.
🔹 Front-End Proficiency with React
On the front end, I leverage React to build intuitive, responsive, and dynamic user interfaces. My goal is to deliver seamless user experiences across all devices.
🔹 AI & Chatbot Development with ChatGPT
Harness the power of AI with intelligent chatbot solutions! I design and implement AI-driven chatbots using ChatGPT to enhance user interaction and automate customer service.
🔹 Chatwoot Specialist
As a Chatwoot expert, I can help you set up, customize, and optimize your customer support solutions. Whether it’s integrating live chat or building custom workflows, I've got you covered.
What can you expect from working with me?
Clear and consistent communication
High-quality, scalable code
Timely delivery of projects
A results-driven approach to solving your problems
Let’s bring your ideas to life! Whether you need a robust web application, an AI chatbot, or an advanced customer support system, I'm here to help.
Let’s work together!
Pankaj S.
has worked
.
Associated with
Code Garage Tech Pvt. Ltd.
$50/hr
100%
Job Success
$500K+ earned
Available now
Offers consultations
Start of list.
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Most AI automations look great in a demo and quietly break in production. I build the ones that actually run your business, deployed in about a week and hardened from day one.
I'm an AI automation engineer who turns slow, manual business processes into reliable systems that pay for themselves fast. Using Claude Code, MCP, and modern AI tooling, I ship working automations in days, not quarters, then lock them down so they survive real traffic, security reviews, and 2 AM edge cases.
What I automate (and the payback that follows):
Lead-to-cash workflows: intake, qualification, CRM sync, and follow-up that recover hours every week and stop deals slipping through the cracks.
Document and data pipelines: contracts, invoices, reports, and records parsed, routed, and filed automatically with full audit trails.
Internal ops and back-office: onboarding, ticket triage, reporting, and approvals wired together across the tools you already use.
Custom AI agents: Claude-powered assistants and MCP integrations connected to your real systems, not a sandbox.
How I work:
1. Scope call: we pin down the one process costing you the most time or money.
2. Build sprint (days, not months): I ship a working automation fast, with you reviewing progress along the way.
3. Harden and hand off: secrets management, least-privilege access, encryption, and a written runbook so it keeps running after I'm gone.
4. Live in about a week: most projects deliver measurable payback within the first week or two of going live.
Why clients hire me over a cheaper option: speed and security usually come as a trade-off. I deliver both. Every build ships with non-root containers, isolated environments, secrets rotation (Vault or AWS Secrets Manager), and SOC 2, HIPAA, and GDPR-aligned practices baked in, so what works in week one still passes an audit in month six.
Stacks: Claude Code, MCP, OpenAI, Gemini. AWS, GCP, Azure, DigitalOcean, on-prem. Docker, Tailscale, Cloudflare Tunnel, WireGuard.
Best fit for: founders and ops or engineering leaders in legal, finance, healthcare, and compliance-bound SaaS who need automation that's fast to ship and safe to trust.
A quick first step: message me the one process eating the most time in your week. I'll send back a short, no-obligation plan for automating it, usually within a couple of hours during business hours.
Mikhail T.
has worked
.
Associated with
Valletta.Software: AI Care. Fix-price projects delivery commitment
$2M+
earned
$30/hr
100%
Job Success
$50K+ earned
Available now
Offers consultations
Start of list.
End of list.
YOU are losing 10–20 hours every week to manual workflows, fragmented tools, and inefficient processes. I design and deploy AI systems that eliminate this overhead, automate operations end-to-end, and deliver measurable business impact.
With 11+ years in AI engineering and 60+ AI PoCs delivered, I help startups and enterprises move from idea → production with clarity, speed, and technical depth.
PROVEN IMPACT
➤ AI solutions integrated into platforms with 35M+ downloads and 4.9★ ratings
➤ 400% efficiency gain AI agent for electrical blueprint analysis (CircuitLens)
➤ 95% reduction in email processing time multi-agent CRM and order automation (FlowGrid)
➤ Deployed in high-scale environments, systems supporting millions of users
➤ Scaled an e-commerce business from €50K to €4M annually through full automation
➤ Automated end-to-end operations for staffing companies (including operations and sales)
➤ Delivered $350K business impact with approximately 50% reduction in operational costs
WHAT SETS ME APART
➤ 11+ years of experience in AI engineering
➤ Delivered 60+ AI models and solutions
➤ 100% Job Success on Upwork
➤ Built and deployed systems serving 3M+ users
➤ Scaled a business from €50K to €4M through automation
➤ Rapid PoC delivery within 5–7 days
What I Build (End-to-End AI Systems)
Rapid validation using real data → working prototype → clear go/no-go decision
➤ AI Chatbots & Automation Systems: Intelligent agents that automate workflows across tools, APIs, and teams
➤ GenAI & RAG Applications: Production-ready LLM solutions with reliable retrieval, accuracy, and guardrails
➤ Voice AI Agents: Real-time, multilingual conversational systems for customer support and operations
➤ Data Analytics Solutions: Data mining, event mining, sales forecasting, and interactive dashboards
Who I Work Best With
➤ Startups building AI-powered products or SaaS platforms
➤ Companies looking to automate workflows and reduce manual operations
➤ Teams implementing AI chatbots, RAG systems, or copilots
➤ Organizations scaling AI solutions from prototype to production
TECH STACK
➤ AI & Agent Frameworks: LangChain, LangGraph, LangSmith, CrewAI, n8n
➤ LLMs & Platforms: OpenAI, Claude, LlamaIndex, Azure OpenAI, Google ADK, MCP Servers
➤ Cloud & Voice: AWS Bedrock, Vertex AI, Whisper, LiveKit
➤ Backend & APIs: Python, FastAPI, Django, Microsoft Graph API
➤ Data & Vector Databases: PostgreSQL, Pinecone, ChromaDB
➤ Data Engineering & BI: BigQuery, Snowflake, Power BI
➤ Automation & Processing: Document parsing, OCR, PO automation, ERP integration
If you're exploring AI and want clear direction, I can help you:
➤ Validate your idea quickly
➤ Avoid costly mistakes
➤ Build a scalable, production-ready system
Send me your use case; I’ll tell you exactly what’s feasible, what’s not, and how to move forward.
Mateen Ahmed
🔑 KEYWORDS:
AI agent developer | n8n expert | Python backend developer | LangChain | RAG system | AI automation | workflow automation | Agentic AI | LLM integration | openai api | FastAPI | vector database | multi-agent systems | production AI | LLM Engineering | SaaS Development | Data Analytics | Python | Claude |
Mateen A.
has worked
.
$20/hr
96%
Job Success
$100K+ earned
Available now
Offers consultations
Start of list.
End of list.
Profile Overview:
Are you seeking a reliable partner to transform your innovative ideas into robust IoT, mobile, or web applications? With over a decade of experience, I specialize in delivering end-to-end solutions that drive business growth and operational efficiency.
What I Offer:
• IoT & Embedded Systems:
Development of real-time dashboards for monitoring and analytics.
Integration of AI-driven insights for predictive maintenance and decision-making.
Expertise in firmware development using C, C++, and Python.
Proficient in communication protocols like Bluetooth and AWS IoT.
Implementation of automated alert systems for critical event notifications.
• Mobile & Web Development:
Creation of high-performance Android and iOS applications using Flutter.
Design of responsive web platforms utilizing React, HTML, CSS, and JavaScript.
Development of secure backend systems with Node.js.
Seamless integration of RESTful APIs for efficient system communication.
• AI Automation:
Design and deployment of intelligent automation workflows using machine learning and AI tools.
Integration of NLP, computer vision, and predictive models to optimize business processes.
Development of smart bots and AI agents for task automation and data processing.
Streamlining operations by combining AI algorithms with custom software solutions.
• Software Engineering & Cloud Solutions:
Full-stack development ensures cohesive front-end and back-end integration.
Deployment of scalable and secure cloud infrastructures on AWS.
Implementation of CI/CD pipelines adhering to Agile and DevOps methodologies.
Incorporation of AI & machine learning for enhanced application intelligence.
Robust cybersecurity measures to protect data integrity and privacy.
• Hardware & PCB Design:
Advanced circuit and PCB development using Altium, Eagle, and KiCAD.
Hands-on experience with microcontrollers like ESP32, Arduino, Raspberry Pi, and STM.
Integration of sensors for real-time monitoring of environmental parameters.
Design of energy-efficient hardware solutions for prolonged operational life.
Comprehensive prototype development and rigorous testing for reliability.
Proven Track Record:
Over the years, I've completed 500+ projects, delivering tangible results across various industries, including healthcare, manufacturing, and logistics. My commitment to excellence ensures that each solution is tailored to meet specific client needs, driving innovation and efficiency.
Let's Collaborate:
Whether you're looking to develop a new IoT platform, enhance your mobile application's performance, or design a scalable web solution, I'm here to bring your vision to life. Let's discuss how I can contribute to your project's success.
Skills:
• Programming Languages: C, C++, Python, JavaScript
• Frameworks & Tools: Flutter, React, Node.js
• Cloud Platforms: AWS IoT
• Communication Protocols: UART, SPI, I2C, CAN, USB, Ethernet
• Version Control: Git
Haris R.
has worked
.
$15/hr
100%
Job Success
Available now
Offers consultations
Start of list.
End of list.
🚀 Built Your SaaS with AI Tools but Now Need It Production-Ready?
If you used Lovable, Bolt , Base44 or any other full stack web app want to launch your MVP — but now the code is messy, slow, or hard to scale — I help turn it into a clean, secure, scalable SaaS application.
I’m a Top Rated Full-Stack Developer (100% Job Success, $60K+ earned) with 6+ years of experience building and scaling production-ready web apps using React, Next.js, and Supabase. I don’t just write code — I fix architecture, improve performance, and prepare your product for real users.
🎯 What I Specialize In
✅ AI-generated SaaS or MVP cleanup & refactoring
✅ AI-powered Web Applications like ( Lovable, Bolt, Base44 etc )
✅ Subscription & Stripe Integrations
✅ Dashboard & Admin Panels
✅ Performance Optimization (up to 60% faster load times)
✅ Long-term product scaling 🔐 Supabase Database Specialization
✅ Supabase Edge Functions (Serverless APIs & Logic)
✅ RLS (Row-Level Security) Policy Setup
✅ Secure Authentication & Authorization
✅ Role-Based Access Control (RBAC)
✅ Email Configuration (SMTP, Magic Links, OAuth)
✅ Supabase Database Design & Optimization
✅ Production Deployment & Scaling
✅ Payment gateway integrations ( Stripe, Paypal , Any local payment system )
Language:
Javascript, Typescript, Python
🛠 Core Tech Stack (Focused & Clean) Frontend:
React.js, Next.js , TypeScript, Tailwind CSS, Shad CN, Redux
Backend:
Node.js, Express.js, Fast API, Supabase
Database:
PostgreSQL, MongoDB, MySQL
Infrastructure:
Hostinger, Vercel, AWS, Docker
💼 Real Business Results
✔ Built healthcare appointment platform handling thousands of users
✔ Developed mental health SaaS product with subscription model
✔ Design and develop web and mobile app for event management platform
✔ Reduced React app load time by 60%
✔ Built dashboards with real-time data & role-based authentication
✔ Delivered 150+ successful Upwork projects
🧠 Why Clients Choose Me
• Clear communication (0-4 hour response time)
• Business-focused mindset (not just technical delivery)
• Clean, scalable architecture
• Reliable long-term support
• No over-promising — just solid execution
👨💻 Who I Work Best With
• SaaS founders who started with AI tools
• Startups preparing for real user growth
• Founders needing technical restructuring
• Agencies needing senior-level React support
📩 Let’s Build Something That Scales Send me a message with your idea, and I’ll give you a clear technical roadmap before we start. — Salem
Md Abu S.
has worked
.
$55/hr
100%
Job Success
$400K+ earned
Available now
Offers consultations
Start of list.
End of list.
Flutter and React developer with 6,500+ hours on Upwork and a 100% Job Success Score — building cross-platform mobile apps, full-stack web applications, and AI-powered products for startups and product companies since 2017.
I build iOS and Android apps with Flutter and Dart, full-stack web platforms with React.js (Upwork certified), Node.js, Express, and MongoDB, and cross-platform mobile apps with React Native. On the backend I work with REST APIs, GraphQL, Firebase, AWS, and PostgreSQL.
I also build AI-powered features into web and mobile applications — integrating OpenAI, Gemini, and Claude APIs into Flutter and React apps, building custom chatbots and AI assistants, automating workflows with LLM backends, and connecting AI services to Node.js APIs. If your product needs an intelligent layer on top of existing functionality, that's a natural extension of the stack I already work in.
For early-stage startups, I specialise in MVP development — scoping, architecting, and shipping a working product fast without cutting corners on code quality. Most of my clients are founders or technical leads who need a senior developer they can trust to own the build end-to-end.
What you get working with me:
— Clean, scalable architecture from day one, not retrofitted later
— Daily updates and async-friendly communication across timezones
— On-time delivery, verified across 93 completed projects
— A technical partner who thinks about your product, not just the ticket
Outside Upwork, I'm Founder and CTO of Fortmindz — a 70-person product engineering company with 850+ projects delivered, ISO 9001:2015 certified, and award-winning (Nasscom, ET Now, ET Entrepreneur, BCC&I). I was also recognised by Prime Minister Narendra Modi for winning a global cybersecurity hackathon.
If you're building a Flutter app, a React or MERN web platform, an AI-powered product, or need a senior developer to take your MVP from idea to launch — I'm available. Message me and let's talk scope.
Sayak D.
has worked
.
Associated with
Fortmindz Private Limited