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$11/hr
100% Job Success
$200+ earned
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Your data is sitting in spreadsheets, scattered across systems, or stuck in reports nobody reads. I fix that—turning raw, messy data into clean pipelines, automated workflows, and dashboards your team actually uses. I'm a data analyst & engineer based in Pakistan with a BSc in software engineering and hands-on experience building end-to-end data solutions—from raw ingestion to production-ready insights. 🔧 What I deliver: • Python scripts that automate hours of manual data work • SQL pipelines that clean, transform, and model your data correctly • ETL workflows connecting your data sources into one reliable system • PostgreSQL/MySQL database setup, optimization, and querying • Power BI & Looker Studio dashboards with KPIs your team will actually use • Web scrapers that collect structured data from any source • CSV/Excel data cleaning, normalization, and transformation 📌 Flagship project — AETHER (Ethical Data Platform): Built a full-stack data platform with FastAPI, PostgreSQL, and Next.js featuring a 16-stage automated pipeline, two-tier RBAC with a 24-permission matrix, AES-256 encryption, append-only audit logs, and bias detection using SHAP and Fairlearn. This is not a tutorial project — it is production architecture. 📌 Research — Duolingo Churn Prediction (IEEE-track): Built and compared 6 ML models (Logistic Regression, Random Forest, XGBoost, LightGBM, MLP, LSTM) on 25,000+ user records. Deep learning models achieved 94%+ ROC-AUC. Paper targeting IEEE publication. ✅ 100% Job Success Score | 5.0 Rating | 8 completed contracts 🎯 Hire me if: • Your team spends hours on manual reporting that should be automated • You need a reliable pipeline built once, that works every time • You want someone who understands both the data and the business behind it • You need clean, documented, maintainable code—not a quick hack I respond within hours and deliver on time. Let's talk about your data.
Muneeb U.
$15/hr
100% Job Success
$500+ earned
Available now
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If you just want a ticket-taker to blindly copy-paste code, I'm not your guy. But if you need a full-stack If you need a full-stack web developer who actually knows React, Next.js, Supabase, and Node.js inside out — not just someone who Googles it — let's talk. 🟢 CLIENTS SAY 5.0/5.0: "Muneeb did a wonderful job rewriting my vibe-coded app, reducing the amount of code, and improving the app's look and speed! 10/10." 🟢 TECH STACK Frontend → React, Next.js, TypeScript, Tailwind CSS, shadcn/ui, Framer Motion Backend → Supabase, PostgreSQL, Node.js, FastAPI, REST API AI & LLMs → Claude API, OpenAI API, LangChain, LangGraph, RAG, pgvector Payments & Infra → Stripe, Vercel, Docker, AWS 🟢 WHY WORK WITH ME 1️⃣ Security from day one. Auth, RBAC, RLS, input validation — not an afterthought. 2️⃣ I don't go quiet. Fast replies, honest updates. Upwork's Clear Communicator badge backs this up. 3️⃣ Speed without shortcuts. Production-ready code, not a demo dressed up as one. 4️⃣ AI without the hype. Real LLM workflows — chat, summarization, agentic pipelines — not GPT wrapped in a box. 🟢 WHAT I BUILD 1️⃣ Full-Stack SaaS & MVPs React + Next.js frontend, Supabase + Node.js backend, Stripe billing, multi-tenant RBAC. Zero to production. 2️⃣ AI App & Agent Development RAG pipelines, AI agents, LLM integrations using Claude API, OpenAI API, LangChain, LangGraph. 3️⃣ Internal Tools & Admin Panels Custom dashboards and CRMs with real permissions, audit trails, and clean UI. 4️⃣ Backend for Existing Frontends Supabase, PostgreSQL, Node.js, REST APIs — connected, documented, production-ready. 5️⃣ Vibe-Code Cleanup & Production Rewrites Lovable, Bolt, or Cursor got you started but it's breaking down? I fix the foundation. No full rebuild needed. 6️⃣ AI Feature Add-ons Adding a chatbot or AI workflow to your existing Next.js or React app? Clean integration, no disruption to what's already working. 🟢 HOW EVERY PROJECT RUNS → Scoping Call. Goals and constraints before touching any code. → Codebase Audit. I review what exists and build a realistic plan. → Phased Milestones. Fixed-price, clear timelines, no surprises. → Updates Every 2 Days. Progress and decisions without you chasing. → Weekly Demo Call. Live reviews to catch issues early. → Full Handover. Code ownership, docs, and a Loom walkthrough. Got an idea, a broken prototype, or a frontend that needs a real backend? Send me a message. Let's scope it out.
Muhammad M.
$5/hr
100% Job Success
$100+ earned
Available now
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🏆 Full Stack Web & Mobile App Developer | PHP | Flutter | React Native | AI-Powered Apps I've spent 4+ years building web and mobile products that actually ship custom PHP backends, Flutter apps, React Native cross-platform builds, WordPress systems, and AI-powered integrations for startups, agencies, and product teams across the US, UK, and Europe. Most clients come to me after a bad experience with a developer who disappeared mid-project or delivered something that needed rebuilding. That's not how I work. I scope before I build, communicate daily, and don't close a project until it runs clean. What I build: Full stack web apps (PHP, MySQL, REST APIs, GraphQL) WordPress: custom themes, plugins, WooCommerce, Headless/WPGraphQL Mobile apps: Flutter (iOS + Android), React Native AI integrations: OpenAI API, custom LLM-powered features Frontend: React.js, Tailwind CSS, Bootstrap Frameworks: CodeIgniter, Yii Performance audits, security hardening, legacy system overhauls Third-party API integrations (payments, CRMs, shipping, etc.) What makes the difference: I read your brief before responding. I ask the questions your last developer skipped. I flag problems before they become expensive. And I write code that the next developer won't curse at. If you have a project in mind or just a problem you're not sure how to solve technically send me a message. I respond fast.
Zain-Ul- H.
$20/hr
100% Job Success
$10K+ earned
Available now
Offers consultations
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TOP RATED ✅ | 100% Job Success ✅ With over 6 years of hands-on experience in Ruby on Rails(ROR), modern JavaScript frameworks like ReactJS, and cross-platform mobile development with React Native. My work has directly contributed to increasing end-user engagement by 30–40% and has helped clients grow their profits exponentially through performance-driven development and user-focused design. I've built and scaled a wide range of web and mobile applications; many for fast-growing, venture-backed startups. Whether building from scratch or optimizing existing platforms, I bring a product-oriented mindset and a proven track record of delivering high-impact results. In recent years, I've embraced an AI-first engineering approach, leveraging tools like OpenAI, Anthropic, and Gemini not just as integrations, but as force multipliers in the development process itself. I work daily with Claude Code, OpenAI Codex, Cursor, and Lovable to compress weeks of work into days; one recent example is a 6,000+ line architectural refactor I shipped in two days using Claude Code, without compromising on code quality or test coverage. This is what allows me to help clients validate ideas faster, ship features sooner, and ultimately land more business. I've practiced all the software engineering principles and technologies needed to create reliable and maintainable production-ready web and mobile applications from scratch. 🚀 You have an idea for your MVP web or mobile app? Let's talk and give me a trial to help you to build it. 🐛 Do you have a bug that needs to be fixed ASAP? Let me take care of it, and if I can't resolve it, there will be NO CHARGE. 🌟 You want to scrape a site for analysis and comparison? 📱 Want a cross-platform mobile app built with React Native that ships to both iOS and Android from a single codebase? 🤖 Want to build AI-powered features into your product? I've shipped production AI features for real clients and know how to do it fast. 🕹️ Need an extra main player in your team to add new features? I'm here to help you. Primary expertise is below: Programming language: Ruby, JavaScript, TypeScript, Python, C, C++, Shell script Ruby-Based frameworks: Ruby on Rails(v5, 6, 7, 8), Sinatra Ruby gems: ActiveAdmin/Avo, Resque, ruby-llm, solid-queue, RSpec, Kamal Database: PostgreSQL, MySQL, MongoDB, Redis. AI Tools & Integrations: OpenAI GPT-4o, Anthropic Claude, Google Gemini, AI-assisted development workflows (compound engineering) AI-Assisted Dev Tools: Claude Code, OpenAI Codex, Cursor, Cline, Lovable — used daily to ship faster without cutting corners on quality Mobile: React Native (iOS + Android), Expo Other Frameworks/Tools: ReactJS, Next.js, Django, Shopify, Elastic search, Beautiful Soup, JIRA, Heroku, AWS, Trello. I provide the following services: - Full Stack Web and Mobile app development, optimization, and third-party integrations - Cross-platform mobile app development using React Native and Expo for iOS and Android - Development of API clients, bots, various tools, and libraries - Rapid AI-assisted prototyping using compound engineering workflows with Claude Code, Codex, and Lovable to ship MVPs and new features 3–5x faster than traditional timelines - Create components consistent with every other application layer - Set up and deploy development (staging), QA, and production environments. - Able to resolve issues in the application of any layer, allowing a project to not seek or wait for another narrowly specialized developer. In other words, I can maximize overall project development performance by having enough horizon and insight to think of it systematically. - Web Scraping for gathering, analyzing, and utilizing data to gain a competitive advantage I'm ready for any demo or evaluation work based on our next steps. 🚀 Let's collaborate and create something truly transformative! ✨
Zain-Ul- H. has worked .
Ehtasham F.
$12/hr
100% Job Success
$7K+ earned
Available now
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⭐⭐⭐⭐⭐ 𝗘𝗵𝘁𝗮𝘀𝗵𝗮𝗺 𝗶𝘀 𝗼𝗻𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗯𝗲𝘀𝘁 𝗽𝗲𝗼𝗽𝗹𝗲 𝗜 𝗵𝗮𝘃𝗲 𝘄𝗼𝗿𝗸𝗲𝗱 𝘄𝗶𝘁𝗵 𝗼𝗻 𝘁𝗵𝗶𝘀 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺. We had very custom, very complex needs for a crypto trading execution system, and Ehtasham went above and beyond to make sure we had a first-rate product to use. I intend to work with him again! 🚀𝗦𝗲𝗻𝗶𝗼𝗿 𝗦𝗼𝗹𝗮𝗻𝗮 & 𝗘𝗩𝗠 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗲𝗿 | 𝗥𝘂𝘀𝘁 & 𝗦𝗼𝗹𝗶𝗱𝗶𝘁𝘆 𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁 𝗘𝗻𝗴𝗶𝗻𝗲𝗲𝗿 | 𝗗𝗲𝗙𝗶, 𝗥𝗮𝘆𝗱𝗶𝘂𝗺 & 𝗣𝘂𝗺𝗽𝗙𝘂𝗻 𝗦𝗽𝗲𝗰𝗶𝗮𝗹𝗶𝘀𝘁 I'm a blockchain developer with hands-on delivery across EVM chains (Ethereum, BSC, Polygon, Base) and Solana, with 794+ hours logged on Upwork and a 100% Job Success Score. I write smart contracts in Solidity and Rust, build Web3 frontends (React + ethers.js / web3.js), and handle end-to-end token launches, staking systems, and NFT minting platforms. 🛠 𝗖𝗼𝗿𝗲 𝗘𝘅𝗽𝗲𝗿𝘁𝗶𝘀𝗲 🔹 Solana Development (Rust / Anchor) SPL tokens, tokenomics, minting programs Anchor framework: PDAs, CPI, upgradeable programs DeFi protocols: AMMs, lending, flash loans, staking, governance High-performance bots & automation on Solana 🔹 𝗘𝗩𝗠 & 𝗦𝗼𝗹𝗶𝗱𝗶𝘁𝘆 𝗦𝗺𝗮𝗿𝘁 𝗖𝗼𝗻𝘁𝗿𝗮𝗰𝘁𝘀 ERC-20, ERC-721, ERC-1155 tokens (fungible, NFT, multi-token) DeFi contracts: DEXs, liquidity pools, staking, yield farming Governance modules, DAO frameworks, cross-chain bridges Security-focused coding: reentrancy protection, gas optimization 🔹 𝗕𝗼𝘁𝘀 & 𝗔𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻 Arbitrage & MEV bots (low latency, optimized for speed) Volume bots, liquidity management, automated market-making Custom trading scripts for Solana & EVM ecosystems 🔹𝗘𝗰𝗼𝘀𝘆𝘀𝘁𝗲𝗺 𝗜𝗻𝘁𝗲𝗴𝗿𝗮𝘁𝗶𝗼𝗻𝘀 Solana: Raydium, PumpFun, Jupiter, Serum, Orca EVM: Uniswap, PancakeSwap, SushiSwap, Curve, Aave, Compound Swap routing, cross-protocol automation, liquidity optimization 🔹𝗣𝗲𝗿𝗳𝗼𝗿𝗺𝗮𝗻𝗰𝗲 & 𝗢𝗽𝘁𝗶𝗺𝗶𝘇𝗮𝘁𝗶𝗼𝗻 Compute unit & parallelism optimization for Solana Gas efficiency & cost reduction for Solidity contracts Benchmarking, stress testing & profiling for high-load systems 🔹 𝗜𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 & 𝗗𝗲𝘃𝗢𝗽𝘀 Validator & RPC node setup/maintenance Docker, Kubernetes, CI/CD pipelines for blockchain apps Monitoring & observability with Prometheus, Grafana 🔹 𝗗𝗮𝘁𝗮𝗯𝗮𝘀𝗲𝘀 & 𝗗𝗲𝗰𝗲𝗻𝘁𝗿𝗮𝗹𝗶𝘇𝗲𝗱 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 PostgreSQL, MongoDB, Redis IPFS, Arweave — for decentralized & permanent storage ✅ 𝗪𝗵𝘆 𝗖𝗵𝗼𝗼𝘀𝗲 𝗠𝗲 ✔ Deep dual expertise: Rust (Solana) + Solidity (EVM) ✔ End-to-end blockchain solutions (DeFi, NFTs, bots, cross-chain apps) ✔ Strong focus on security, performance & scalability ✔ Clean, well-documented, and maintainable code ✔ Transparent communication & milestone-based delivery. 𝗛𝗼𝘄 𝗱𝗼 𝘄𝗲 𝗰𝗼𝗺𝗺𝘂𝗻𝗶𝗰𝗮𝘁𝗲 𝗮𝗻𝗱 𝗿𝗲𝗽𝗼𝗿𝘁? We always prefer to keep our work transparent, and for this reason, we like to be in touch with our valued clients on a daily, weekly & monthly basis. ✅ Upwork Message Board ✅ JIRA ✅ Azure DevOps Server ✅ Asana ✅ Trello ✅ Zoho Projects 𝗢𝗿 𝗪𝗵𝗮𝘁𝗲𝘃𝗲𝗿 𝗖𝗵𝗮𝗻𝗻𝗲𝗹 𝗬𝗼𝘂 𝗪𝗮𝗻𝘁. 𝐋𝐞𝐭'𝐬 𝐜𝐨𝐥𝐥𝐚𝐛𝐨𝐫𝐚𝐭𝐞 𝐟𝐨𝐫 𝐲𝐨𝐮𝐫 𝐛𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐧𝐞𝐞𝐝𝐬! ----------------------------------------------------------------------------------------------------------------- #JavaScript, #ReactJS, #NodeJS, #ECMAScript, #WebAssembly, #C++, #Rust, #Solidity, #Erlang, #Dart, #Golang for programming, coupled with #GraphQL, #PostgreSQL, #LevelDB, #RocksDB for databases, and #PlayCanvas, #WebXR for immersive experiences. Proficient in #BlockchainProtocols, #SmartContracts, #CEX, #DEX, #DeFi, #NFTs, #GameFi, while leveraging #AWS, #Serverless, #Docker, #Kubernetes, #Monitoring tools like #Sentry, #Datadog, and #DevOps practices. Expertise spans numerous blockchain ecosystems including #Bitcoin, #Ethereum, #BinanceSmartChain, #Cardano, #Avalanche, #Solana, #Rust #Polkadot, # Polygon, #All EVM EVM-based blockchains among others, and development tools like #OpenZeppelinTruffle, #Web3js, #Infura for seamless blockchain application deployment and management." EVM blockchains ( Ethereum, Polygon and Binance) EVM blockchains ( Ethereum, Polygon and Binance ), pump.fun.
Bohdan Y.
$35/hr
100% Job Success
$1K+ earned
Available now
Offers consultations
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If you need a senior full stack developer who ships production-ready code on time, you are in the right place. As a web developer and react developer with 5 plus years of commercial development, I build platforms that scale and deliver results. Get in touch today and let's start your project I am a full stack developer and AI developer in React, Next.js, Node.js, TypeScript, and Python. As a full stack developer I cover front end developer work in React, backend API engineering, database architecture, and AWS cloud. As a full stack developer I work with startups and enterprise teams from MVP to full-scale SaaS with features like analytics, admin panels, and billing. Whether you need a web developer for a landing page or a full stack developer for a complex platform, I deliver complete solutions from architecture to launch. I am a full stack developer with fullstack products across SaaS, healthcare, analytics, trading, and digital commerce As a react developer I build fast, interactive applications in React, Next.js, and JavaScript with TypeScript. My work as a front end developer covers Figma-to-code implementation, dynamic UI, web design, and Tailwind CSS. As a web developer and front end developer my Core Web Vitals score 90 to 95 plus. I am a react developer skilled in the MERN stack, GraphQL, REST, WebSocket, and front-end browser extension. I work as a react native developer and mobile app developer delivering cross-platform apps on secure backend services. As a full stack developer and react developer I lead frontend from simple landing pages to complex interactive portals As an AI developer I integrate LLM APIs including OpenAI, Claude, and custom LLM solutions into production apps. My work as an AI developer includes ai-powered chat, AI agents for sales automation, ai-driven n8n workflows, smart data pipelines, and bot creation. As a full stack developer and AI developer I architect backend systems using FastAPI, Django, Node.js, and NestJS connected to React front end interfaces. I am an AI developer bringing real power, game-changing automation, and innovative solutions to healthcare, trading, and enterprise products. As a python developer I build data scripts and backend services. As an AI developer and react developer I work from core backend fabric to a pro UI, setting the right vibe for your brand As a react developer and front end developer I translate Figma designs into clean, secure interfaces. As a full stack developer and front end developer my work covers PDF generation, embedded video, dynamic form systems, signup flows, Google and Meta ads tracking, content management, and ui/ux. As a front end developer I have delivered conversion-optimized sites, interactive dashboards, and portals. As a web developer I review and fix existing code, optimize performance, and focus on clean systems I am a wordpress developer with expertise in custom plugin development, PHP, Elementor, CMS setup, WooCommerce, and template customization. As a wordpress developer I handle migration, web design, and maintenance for business websites and online stores. I work as a web developer across Shopify, Webflow, Bubble, Softr, Xano, Replit, and GoHighLevel, making me a versatile web developer for any tool. As a full stack developer I set up and extend ERP platforms — ERPNext, Odoo, and Dynamics — connecting them to custom front-end applications As a full stack developer my integration work covers HubSpot, Salesforce, SharePoint, Twilio, WhatsApp, Stripe, and n8n workflow automation. I am a full stack developer who has built marketplace systems, crypto and web3 blockchain apps, and trading platforms. As a full stack developer and consultant I lead products from MVP to enterprise scale. Tech stack as a full stack developer: React, Next.js, Node.js, NestJS, FastAPI, Django, Laravel, Java, Rust, Python, PHP, PostgreSQL, Supabase, AWS, Docker, CI/CD, REST, GraphQL, gRPC, WebSocket I am a full stack developer bringing debugging expertise, code review, and smart architecture to every contract. Auto1 Group: senior full stack developer on React and Next.js (millions of users) Universe Group: full stack developer for SaaS analytics, A/B testing, and conversion program development Extreme Idea: full stack developer building a SaaS marketplace, admin panels, and CRM integrations. I am a specialist, mentor, and lead programmer with a portfolio across mobile, digital, creative, and studio projects. Technical assistance available as a dev, engineer, designer, and coding expert for long-term work — available for a discovery call, let's connect I am a full stack developer, web developer, react developer, front end developer, AI developer, wordpress developer, and programmer for complete software engineering: architecture, development, testing, deployment, and maintenance. A trusted full stack developer for companies needing clean, secure code. MSc Computer Science, BSc Applied Math, Kyiv-Mohyla Academy
Yaro Labs
Associated with
Yaro Labs
$1K+
earned
Yurij A.
$60/hr
100% Job Success
$800K+ earned
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Senior Frontend Engineer with 10+ years architecting large-scale, high-load applications — now focused on building production-grade UIs for AI products, engineering agentic coding pipelines, and pioneering Generative UI frameworks. Currently founding UI developer at Tesari.ai, building interfaces for an AI-driven intelligence platform where auditability and real-time depth are non-negotiable. I help teams ship LLM-powered interfaces, architect autonomous developer-agent ecosystems, and adopt AI-assisted development workflows (Claude Code, agentic tooling) without sacrificing architecture, performance, or quality. AI ENGINEERING, AGENTIC DEVELOPMENT & GENERATIVE UI • Building production UIs for AI/LLM products: chat & agent interfaces, streaming responses, tool-calling visualizations, human-in-the-loop review flows. • Generative UI Architecture: Designing and implementing systems for real-time, dynamic interface generation, transforming structured LLM outputs into context-aware UI components on the fly. • Agentic Coding Pipelines & Infrastructure: Engineering autonomous developer-agent environments using Claude Code; setting up project contexts, custom agent skills, and multi-agent execution workflows. • Automated Quality & Security Guardrails: Developing specialized monitoring agents dedicated to autonomous code review, continuous technical debt tracking, and security vulnerability detection. • Advanced Workflow Automation: Designing custom agentic orchestrations to automate complex refactoring, end-to-end test generation, and multi-step repository-wide development tasks. • Integrating LLM APIs (Anthropic, OpenAI): Embedding advanced capabilities into apps via high-performance streaming, structured outputs, function/tool calling, and RAG-driven UIs. • Designing UX for AI Trust: Architecting interfaces focused on source provenance, citations, deep auditability, and explainable AI outputs. • Enterprise-Grade Workflows: Establishing AI-assisted workflows that scale without sacrificing core codebase quality, performance, and maintainability. CORE EXPERTISE Frontend Architecture & Scalability • Architecting large-scale, high-performance frontend applications • Microfrontend architecture (Webpack Module Federation, Islands Architecture) • Refactoring and modernizing legacy codebases • Step-by-step migration without functionality loss • Team leadership (up to 5 persons) TECHNICAL SKILLS JavaScript / TypeScript • Modern JavaScript/TypeScript for enterprise applications • Deep OOP knowledge and SOLID principles • Advanced React Patterns: HOCs, Render Props, Compound Components • Unit testing: Jest, React Testing Library, Playwright React • Distributed, high-load applications with TypeScript • Server Components and Concurrent Features (React 18+) • Next.js, Vite, performance optimization • State management: Redux, MobX, Zustand • Bundle size optimization and code splitting Architecture & Systems • Design Systems (Figma tokens, Storybook) • Headless components architecture • Domain-Driven Design and architectural patterns • Monorepo: Nx, Lerna, Turborepo • Private npm registries and UI libraries • Auth management with Okta • GraphQL with subscriptions/real-time Node.js • Backend development with Express/NestJS • TypeORM/Prisma, MongoDB, PostgreSQL • GraphQL implementation Development & Quality • Performance profiling and Web Vitals optimization • Frontend security best practices • Accessibility compliance (WCAG) • i18n and analytics integration • Git workflows, Docker, Kubernetes • Agile methodologies, JIRA, Azure DevOps
$30/hr
100% Job Success
$3K+ earned
Available now
Offers consultations
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𝗜 𝗯𝗿𝗶𝗱𝗴𝗲 𝘁𝗵𝗲 𝗴𝗮𝗽 𝗯𝗲𝘁𝘄𝗲𝗲𝗻 𝗰𝗼𝗺𝗽𝗹𝗲𝘅 𝗲𝗻𝗴𝗶𝗻𝗲𝗲𝗿𝗶𝗻𝗴 𝗮𝗻𝗱 𝗵𝗶𝗴𝗵-𝗴𝗿𝗼𝘄𝘁𝗵 𝗱𝗶𝗴𝗶𝘁𝗮𝗹 𝘀𝘁𝗿𝗮𝘁𝗲𝗴𝘆. I am a Technical Lead and Full-Stack Developer with a background in Engineering, which allows me to approach web architecture with a systematic, precision-focused mindset. Whether you are looking to architect a massive-scale data directory or build a high-performance interactive application, I specialize in engineering solutions that are scalable, secure, and optimized for the modern landscape. I've served as a technical lead in many projects, spearheading the development of software solutions in vastly different industries. My work focuses on building high-performance front-end interfaces using React and robust back-end systems with Python and Django. By standardizing CI/CD pipelines, I ensure 99.9% deployment uptime and have successfully improved system response times for clients by 30%. Expertise & Specialized Projects 1. Programmatic SEO (pSEO) & AI Optimization: I recently architected a 9,000+ page location directory for the real estate sector, engineered to dominate rankings and serve as an authoritative source for AI models like Gemini and Perplexity. This involved implementing advanced JSON-LD Schema (LocalBusiness, FAQ, Breadcrumb) and rigid silo architectures to ensure instant crawlability. 2. Interactive EdTech: I have designed and developed comprehensive learning hubs for DeFi leaders like Uniswap and Compound, featuring interactive guides, structured timelines, and hands-on clickable demos. 3. Custom Product Demo Tools: I developed a specialized Chrome extension and tool, similar to Navattic, enabling users to capture HTML frames and create guided walkthroughs for onboarding. 4. AI-Powered "Information Gain" Audit Tool: A SaaS dashboard that crawls a website and uses LLMs to calculate an "Information Gain Score" against top-ranking competitors. My Tech Stack - Languages: Python, JavaScript (ES6+), SQL, C++, MATLAB, Bash. - Web Frameworks: React, Django, Tailwind CSS, Next.js, NodeJS, WordPress, Webflow. - Infrastructure & DevOps: Railway, Vercel, Neon, PostgreSQL, Docker, AWS, Celery, Grafana. - Analytics: Ahrefs, SEMrush, Google Search Console, GA4, Looker Studio. The "A to Z" Process: 1. Requirement Engineering & Scoping: We define the technical architecture, data models, and system requirements to ensure the foundation is built for future scale. 2. Agile Development & Prototyping: I lead iterative build cycles, from Figma-ready master templates to functional front-end and back-end integration, ensuring frequent demos and feedback loops. 3. Performance Optimization & QA: This phase focuses on "hardening" the system: optimizing database queries, ensuring compliance, and running comprehensive security audits. 4. Deployment & CI/CD Integration: I set up automated deployment pipelines (Docker, Railway, or cloud-native) to ensure a stable, near-zero-downtime launch. 5. Documentation & Support: Every project concludes with a full GitHub repository transfer, technical documentation, and training to ensure your team has total ownership.
$20/hr
100% Job Success
$30 earned
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I am a blockchain developer focused on building reliable, well-tested decentralized finance systems and smart contract infrastructure. Clients come to me when they need blockchain engineering done properly auditable code, clear documentation, and honest communication from start to finish. I have hands-on experience deploying contracts and automated on-chain systems across Ethereum, BNB Chain, Solana, Polygon, Arbitrum, and Base. CORE SERVICES ▸ Solidity Smart Contract Development Token contracts (ERC-20, ERC-721, ERC-1155), staking, vesting schedules, DAO governance, multisig systems, and custom on-chain logic. Every contract delivered with a full Hardhat or Foundry test suite. ▸ Flash Loan Contract Architecture On-chain contract systems built on Aave V3 and Balancer flash loan protocols. Scoped to your specifications, tested on a mainnet fork, and deployed to your wallet with complete documentation. ▸ DeFi Protocol Development & Integration Deep protocol integrations with Uniswap V2/V3, Aave V3, Curve, Balancer, Compound, PancakeSwap, SushiSwap, and Chainlink oracle feeds. ▸ On-Chain Automation & Bot Development Algorithmic systems that interact with DEX liquidity pools using configurable execution parameters, real-time on-chain price monitoring, gas optimization, and automated alerts. ▸ Solana Program Development On-chain programs in Rust using the Anchor framework, integrated with Jupiter, Raydium, and Jito bundles for high-performance execution. ▸ MEV & Liquidation Systems On-chain liquidation bots, backrunning infrastructure, and Jito bundle integration for Solana — engineered for low-latency execution. ▸ Full Stack dApp Development React / Next.js frontends with wallet connectivity (RainbowKit, wagmi), Node.js backends, and complete smart contract integration via Ethers.js or Web3.js. ▸ Telegram & Notification Bots Trade alert systems, on-chain event monitors, portfolio trackers, and signal delivery bots with real-time webhook integrations. TECH STACK Solidity · Rust · TypeScript · Python Ethers.js · Web3.js · Hardhat · Foundry Uniswap V3 · Aave V3 · Chainlink · Balancer React.js · Next.js · Node.js · Express.js PostgreSQL · MongoDB · Redis AWS · Docker · GitHub Actions Ethereum · Solana · BNB Chain · Polygon · Arbitrum · Base EVERY DELIVERY INCLUDES ✔ Complete source code full ownership transferred to you ✔ Test suite covering all core contract functions ✔ Step-by-step deployment documentation and README ✔ Post-delivery support window for questions and fixes ✔ Plain-language walkthrough of what was built and why HOW WE WORK TOGETHER 1. You describe your project and goals 2. I scope the work clearly no vague estimates 3. I build and test in a forked or staging environment 4. I walk you through the code before final delivery 5. You receive full ownership and documentation WHY CLIENTS WORK WITH ME ✔ Code that is readable, maintainable, and extensible ✔ No surprises scope and cost agreed before work begins ✔ I understand both the engineering and the DeFi logic ✔ Consistent communication and reliable delivery ✔ Long-term thinking I build systems you can grow with Message me with your project, target network, and timeline. I will come back with a clear development plan and honest quote.
$56/hr
100% Job Success
$30K+ earned
Offers consultations
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Transform your online venture into a million-dollar blockchain startup! With 𝗔𝗜-𝗗𝗿𝗶𝘃𝗲𝗻 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 I've assisted 100+ businesses with Custom 𝗠𝗼𝗯𝗶𝗹𝗲 𝗚𝗮𝗺𝗲 𝗗𝗲𝘃𝗲𝗹𝗼𝗽𝗺𝗲𝗻𝘁 , 𝗕𝗹𝗼𝗰𝗸𝗰𝗵𝗮𝗶𝗻, 𝗡𝗙𝗧, 𝗪𝗮𝗹𝗹𝗲𝘁, 𝗮𝗻𝗱 𝗗𝗔𝗽𝗽𝘀 solutions. Get𝟯𝟬 𝗺𝗶𝗻𝘂𝘁𝗲𝘀 𝗼𝗳 𝗳𝗿𝗲𝗲 𝗰𝗼𝗻𝘀𝘂𝗹𝘁𝗮𝘁𝗶𝗼𝗻 𝘃𝗮𝗹𝘂𝗲𝗱 𝗮𝘁 $𝟱𝟬𝟬. Let's make your business a success story! ➡️ With a top-rated 100% job score and over 7 years plus of commercial experience, I deliver ✅ 2000+ Working hours ✅ 20 big Successful projects ✅ 50+ Happy clients worldwide✅ Proven track record of successful projects ✅ High code quality and an agile approach. My clients have achieved significant funding and a 4X their startup success within a few months, from my Cutting-edge strategies in Blockchain, NFT, Smart Contract, P2E, DEX, CEX, DApps and Tokenization. I can help you achieve similar results using Blockchain by leveraging Artificial Intelligence. These cutting-edge technologies like Blockchain, AI/ML and Mobile Game Development are the foundation of your ideas, not just additional features. With over 6 years of extensive experience in cutting-edge BlockChain,NFT, Smart Contract, P2E, Wallet, DApps and Tokenization development. I specialized in creating highly efficient, user-friendly, and visually appealing applications. Use our advanced Blockchain Development Services for business growth with the next enterprise solution. Blockchain Development services i know which change for your business growth with next enterprise solutions ➡️ 𝐁𝐨𝐨𝐬𝐭 𝐲𝐨𝐮𝐫 𝐛𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐠𝐫𝐨𝐰𝐭𝐡 𝐰𝐢𝐭𝐡 𝐨𝐮𝐫 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 - 👉 Blockchain Consulting 👉 Ethereum / Solana / Polygon /Binance Smart Chain (BSC) 👉 Smart Contracts (Financial / Tokenization / Escrow- Contracts ) 👉 Tokenization Services (Asset/Security /Utility - Tokenization) 👉 Decentralized Applications (dApp) - Finance /Gaming /DEXs dApp 👉Decentralized Autonomous Organizations (DAO) 👉 NFT Marketplace ( Art and Collectibles / Gaming /Content and Media ) 👉 Crypto Wallets (MetaMask, Trust Wallet, MyEtherWallet (MEW), Coinbase Wallet ) 👉 Cryptocurrency Exchanges P2P, DEX 👉 Analytics / Security Audits 👉Token Standards: ERC-20, ERC-721, ERC-1155, BEP-20, Flow Tokens 👉NFT Marketplace Protocols: OpenSea, Rarible, SuperRare, Flow 👉DeFi Protocols: Uniswap, SushiSwap, Compound, Aave 👉Security and Auditing Tools: MythX, Securify, CertiK 👉 Web3 Development: Web3.js, Ethers.js, Web3.py 👉Game Development Engines: Unity, Unreal Engine 👉Game Networking: Photon, Mirror, Unity Multiplayer 👉Cross-Chain Compatibility: Chainlink, Ren Protocol, Polkadot ➡️ 𝐓𝐞𝐜𝐡𝐧𝐨𝐥𝐨𝐠𝐢𝐞𝐬 𝐭𝐡𝐚𝐭 𝐦𝐚𝐤𝐞 𝐦𝐞 𝐭𝐡𝐞 𝐭𝐨𝐩 𝟏% 𝐟𝐫𝐨𝐦 𝐫𝐞𝐬𝐭 ✅ 𝐒𝐤𝐢𝐥𝐥𝐬 -Solidity,Rust, TypeScript, Python, Go (Golang),C++:, JavaScript,Node.Js, React.Js , Next.Js, Web3.js etc ✅ 𝐃𝐞𝐯𝐎𝐩𝐬 -  AWS, Google Cloud, Azure,Puppet, Docker, Kubernetes, CI/CD, Ansible, Chef etc. ✅ 𝐓𝐡𝐢𝐫𝐝-𝐩𝐚𝐫𝐭𝐲 𝐀𝐏𝐈 𝐢𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 -  Docker, Trello, Jira, CloudFront, GitHub, Gitlab, Spotify, AWS, Google API, AWS bucket, XMPP, Socket IO, ✅ 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 -  MongoDB, MariaDB, PostgreSQL, SQLite, Mysql, Oracle, Firebase, Firestore, Elastic search ✅ 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 𝐀𝐏𝐈 - PayPal, Stripe, Square, Adyen, Worldpay, Authorize.Net, PayU, Braintree, 2Checkout, ✅ 𝐒𝐌𝐒/𝐄𝐦𝐚𝐢𝐥 𝐀𝐏𝐈 - Twilio SendGrid, Amazon Simple Email Service (SES), Mailchimp, Sendinblue, Mailgun, SMTP ✅ 𝐍𝐨𝐭𝐢𝐟𝐢𝐜𝐚𝐭𝐢𝐨𝐧𝐬 - Push notification, Firebase, OneSignal, Reteno, Pusher, Airship, PushEngageOmnisend. ✅ 𝐕𝐞𝐫𝐬𝐢𝐨𝐧 𝐂𝐨𝐧𝐭𝐫𝐨𝐥 - Git, Github, Bit bucket, Apache Subversion, GitLab, Assembla, Fossil, BitKeeper. ✅ 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐃𝐞𝐛𝐮𝐠𝐠𝐢𝐧𝐠 -  Selenium, Postman, JUnit, TestNG, Apache JMeter ✅ 𝐔𝐈/𝐔𝐗 𝐃𝐞𝐬𝐢𝐠𝐧 -  Figma, Sketch, Adobe XD, InVision, Axure RP, Adobe Illustrator, Adobe Photoshop ✅ 𝐒𝐞𝐜𝐮𝐫𝐢𝐭𝐲 - Authentication, Authorization, Encryption, Input Validation, Session Management ,Secure Communication (HTTPS), OWASP Mobile Security ➡️ 𝐔𝐧𝐥𝐨𝐜𝐤 𝐩𝐨𝐭𝐞𝐧𝐭𝐢𝐚𝐥 𝐚𝐜𝐫𝐨𝐬𝐬 𝐝𝐢𝐯𝐞𝐫𝐬𝐞 𝐢𝐧𝐝𝐮𝐬𝐭𝐫𝐢𝐞𝐬 -  On Demand │Healthcare │ Finance│eCommerce │ Logistics│Game & Sports │ Real Estate Education│Agriculture│Government ➡️ 𝐖𝐡𝐲 𝐈'𝐦 𝐭𝐡𝐞 𝐏𝐞𝐫𝐟𝐞𝐜𝐭 𝐅𝐢𝐭 𝐟𝐨𝐫 𝐘𝐨𝐮𝐫 𝐁𝐮𝐬𝐢𝐧𝐞𝐬𝐬 𝐆𝐫𝐨𝐰𝐭𝐡: -  🔸Top-rated 100% job score with 6+ years of commercial experience. 🔸 Successfully completed projects with satisfied clients. 🔸 Upwork with consistent 5-star ratings. 🔸 Well Commented & Agile Approach into code level. 🔸 Let's take advantages of 30 Min Free Consulting ? 🔸 Demonstrated strong problem-solving abilities. 🔸 Maintain effective communication throughout projects. 𝐋𝐞𝐭'𝐬 𝐭𝐚𝐤𝐞 𝐚𝐝𝐯𝐚𝐧𝐭𝐚𝐠𝐞 𝐨𝐟 𝐨𝐮𝐫 30-𝐦𝐢𝐧𝐮𝐭𝐞 𝐟𝐫𝐞𝐞 𝐜𝐨𝐧𝐬𝐮𝐥𝐭𝐚𝐭𝐢𝐨𝐧, 𝐯𝐚𝐥𝐮𝐞𝐝 𝐚𝐭 $500. 𝐃𝐨𝐧'𝐭 𝐦𝐢𝐬𝐬 𝐨𝐮𝐭—𝐰𝐡𝐚𝐭'𝐬 𝐡𝐨𝐥𝐝𝐢𝐧𝐠 𝐲𝐨𝐮 𝐛𝐚𝐜𝐤?
Arjun C. has worked .