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Ajay K.
$15/hr
100% Job Success
$100K+ earned
Available now
Offers consultations
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I build scalable AI-enhanced mobile apps that help you launch fast and grow user engagement. If you’re looking for someone who can take a complex idea and turn it into a stable, scalable product — I’d love to help. I work with startups and growing companies to build AI platforms, mobile apps, and SaaS products from MVP to full launch. I care a lot about real results — performance, scalability, and clean systems that are easy to grow over time. I have 14+ years of hands-on experience across full-stack, mobile, and AI development, and I’m comfortable owning projects end-to-end — from architecture and development to deployment and optimization. A few quick highlights: • Top Rated profile (100% job success) • Experience working with enterprise-level standards (CMMI-aligned teams) • Strong track record delivering AI, web, and mobile products used by real users Recently, I worked on a full AI product (iOS, Android, Web) covering backend architecture, AI chat integration, and complete cloud + DevOps setup. Technically, I work across: • Mobile: React Native, Flutter, Swift, Kotlin • AI / ML: LLM integrations, AI assistants, recommendation systems • Backend & Web: Node.js, Python, Django, Laravel, React • Cloud & DevOps: AWS, GCP, Azure, CI/CD pipelines What clients usually like about working with me: • Friendly, clear communication • Strong ownership and reliability • Production-ready, scalable code • Product mindset — I think about your business, not just tasks If you want a developer who’s easy to work with and genuinely invested in your product’s success, I’d be happy to connect and discuss your project. Thanks, Ajay
Appventurez Mobitech Private Limited
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Appventurez Mobitech Private Limited
$100K+
earned
$100/hr
$2K+ earned
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Engineering reliable backend and blockchain infrastructure with a focus on correctness, scalability, and clean system design. Experience spans distributed systems, multi‑chain data pipelines, real‑time indexing, archival node operations, and full‑stack Web3 applications. Work includes building production‑grade services in Python, Java, and TypeScript; designing microservices and containerised deployments; and delivering high‑integrity analytics across major chains such as Bitcoin, Ethereum, Cardano, and Ripple. Also experienced with smart‑contract development (ERC‑20/721), event‑driven services, and decentralised identity integrations. Available for backend architecture, blockchain infrastructure, data ingestion pipelines, and Web3 application development.
Zeeshan J. has worked .
Sudhir S.
$20/hr
100% Job Success
$10K+ earned
Available now
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I am a senior developer with 21 Yrs. of experience ( 12+ Yrs with JPMorgan and rest with Deloitte, HCL and other) in Java/J2ee, Python, Rest API, SOAP API, javascript, OAuth, SSO, Kafka, SpringBoot, HTML, CSS, PHP, Web Design, Web Development, React, Redux, Angular, e-commerce, Wordpress, Shopify, JPA, Cloud, AWS, Azure, GCP, Private cloud, JBPM, n8n, Oracle BPM, JMS, Hibernate, Struts, Spring Batch, ESB, Base44, Playwright, Selenium, JavaFX, Lisp, Prolog, Weka , OpenAI, Different Web as well as Application Servers, different Operating Systems and DBMS Tools, SQL, NoSQL, PostgreSQL, Mongo, Cassandra, MYSQL, Oracle, Supabase, AI, NLP, OpenAI, agent development, Wordpress, php , CI/CD, Agile and various open-source tools, technologies and frameworks. Some of the domains I have worked on are Banking, finance, Trade, Crypto, HR, Insurance, Learning, NLP, Healthcare, System architecture, Developers Tooling, Document management, AI, DevOps, Cloud, GCP, Hubspot, Quickbook, PandaDoc, Stripe, web3, Blockchain, etc. ********************************************************************* Experience Summary: Freelancing || Freelancing || Present Toyow || Solution Architect || Sep 24 to JAN 25 JPMorgan || Vice President || (Around 12 Yrs. Total) Deloitte || Senior Consultant/Specialist Senior || Jun 13 to Jun 15 HCL || Onsite/Offshore Dev lead || Sep 06 to May 10 Birla Soft Ltd || Software Engineer || Jan 06 to Sept 06 GIIT || Developer || Feb 05 to Oct 05 ************************************************************************* Some of the applications are as below: - Document generation system - Online translation system using NLP - Library management system - HRMS System - Networking system - Tools for Developer and Operate to build and deploy their applications. - Workflow as a service - Workflow Platform for Mutual Fund NAV processing (Fund accounting) - Prediction analysis for SLA miss. - A real time dashboard for fund processing - Messaging Platform supporting MQ, SFTP, REST, Kafka, FIX, - Trade instruction manager - Customer support system for Bank operators - Platform for Tokenization Assets using Blockchain - A social Media application - A insurance management Platform - Applications developed on Base44 - Loan record reports - OCR for healthcare reports and data processing. - ChatBot for Patient enquiry. - Coin analysis using AI (openAPI integration). - A Platform for affiliate marketing. - CI/CD for Gitlab and AWS.
Ameer H.
$15/hr
100% Job Success
$4K+ earned
Available now
Offers consultations
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Hi! I’m Ameer Hamza – Frontend Developer specializing in React.js & Next.js I turn designs into pixel-perfect, high-performance, and SEO-friendly websites using React.js, Next.js, TypeScript, and Tailwind CSS. My focus is clean, maintainable code that any developer can pick up and scale. What I can do for you: Build responsive, fast, and SEO-optimized web apps Convert Figma, XD, or Sketch designs into fully functional React/Next.js projects Integrate APIs with loading states, error handling, and smooth UX Implement SSR, SSG, caching strategies, and performance optimizations Fix layout issues, responsiveness problems, and enhance Core Web Vitals Write modular, reusable, and secure frontend code (XSS, CSRF prevention) Unit testing with Jest for reliable apps Why work with me: Clear, fast, and professional communication Focus on delivering real value, not just code Experience with dashboards, e-commerce, landing pages, and AI integration Always deadline-oriented and scalable solutions I’m ready to turn your idea into a fast, responsive, and maintainable frontend solution. Let’s make it happen!
Gojko H.
$60/hr
100% Job Success
$50K+ earned
Available now
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Overview: As a senior software engineer with extensive experience in developing complex backend code and working with data, I bring a strong skill set to deliver high-quality solutions. I have successfully completed multiple projects on Upwork, including API integrations, data extraction, database management, and automation scripts. I have a proven track record of delivering efficient, secure, and scalable solutions. Key Skills: Python Programming: Proficient in developing robust and efficient code using Python. API Integration: Extensive experience in integrating various APIs, including Facebook Ads, Impact Radius, Klaviyo, GoHighLevel, and more. Backend Development: Skilled in building scalable backend systems and implementing RESTful services. Data Engineering & Analysis: Strong background in data extraction, transformation, and loading (ETL), along with database management and data visualization. Services I Offer: API Integration: Seamlessly connect different platforms and services through well-designed APIs. Data Extraction & Storage: Extract data from various sources, store it efficiently in databases, and design schemas for optimal performance. Automation Scripts: Develop scripts and integrations to automate repetitive tasks and streamline workflows. Backend Development: Build robust backend systems, implement RESTful services, and ensure secure data handling. Data Engineering & Analysis: Perform data extraction, transformation, and loading processes, create data pipelines, and provide actionable insights. If you are looking for a reliable, skilled, and detail-oriented software engineer and data expert, I am confident that I can deliver top-notch solutions tailored to your specific needs. Let's discuss your project requirements and take your business to new heights.
$15/hr
$100+ earned
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𝗜 𝗵𝗲𝗹𝗽 𝗯𝘂𝘀𝗶𝗻𝗲𝘀𝘀𝗲𝘀 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗲 𝗿𝗲𝗽𝗲𝘁𝗶𝘁𝗶𝘃𝗲 𝘄𝗼𝗿𝗸, 𝗯𝘂𝗶𝗹𝗱 𝗔𝗜-𝗽𝗼𝘄𝗲𝗿𝗲𝗱 𝘄𝗼𝗿𝗸𝗳𝗹𝗼𝘄𝘀 𝘂𝘀𝗶𝗻𝗴 𝗻𝟴𝗻, 𝗠𝗮𝗸𝗲, 𝗭𝗮𝗽𝗶𝗲𝗿, 𝗣𝘆𝘁𝗵𝗼𝗻, 𝗮𝗻𝗱 𝗺𝗼𝗱𝗲𝗿𝗻 𝗟𝗟𝗠𝘀, 𝗮𝗻𝗱 𝗯𝘂𝗶𝗹𝗱 𝗰𝘂𝘀𝘁𝗼𝗺 𝗔𝗜 𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻𝘀 𝘂𝘀𝗶𝗻𝗴 𝗟𝗟𝗠𝘀, 𝗢𝗹𝗹𝗮𝗺𝗮, 𝗪𝗵𝗶𝘀𝗽𝗲𝗿 & 𝗲𝘁𝗰. I’m a Software Engineer with 7+ years of development experience and a growing track record on Upwork, with real automation projects already completed. While I’m new to Upwork, I bring production-level engineering discipline, not fragile or experimental automations. My focus is simple: build reliable systems that save time, reduce manual effort, and run in production. ⚙️ Automation & AI Expertise 🔹 Automation Platforms • n8n (cloud & self-hosted) • Make (Integromat) • Zapier • Webhooks, REST APIs, OAuth 🤖 AI & Intelligent Workflows • LLM-powered automation (OpenAI / GPT) • AI document processing & classification • Resume / CV analysis & scoring • Structured AI outputs for CRMs and databases • Prompt-controlled AI logic inside workflows 🧩 Business Tool Integrations • Google Workspace (Sheets, Docs, Gmail) • ClickUp, Notion, Airtable • GoHighLevel. VAPI, Retool. • Email, messaging & notification workflows • File, form & data pipelines • etc.... 🧠 Core Capabilities ✅ Workflow automation for operations, marketing, and internal tools ✅ AI-enhanced automations with decision logic and scoring ✅ Python automation scripts & background jobs ✅ API integrations & data synchronization ✅ Error handling, retries, logging & monitoring 🚫 I do not build demo automations. ✅ I build systems meant to run daily without breaking. 🚀 Selected Project Experience 📌 AI Recruitment Workflow Automation Built an automation that analyzes CVs and cover letters, scores candidates using AI, and generates structured outputs for hiring teams. 📌 AI Avatar Video Automation (n8n) Developed an n8n workflow that creates AI avatar videos where a virtual presenter speaks scripts using only a photo and text input. 📌 Blockchain & Backend Automation Systems Implemented backend automation for transaction execution, monitoring, and data processing across multiple blockchain networks. 🛠 Tech Stack ⚙️ Automation: n8n, Make, Zapier, Python, Nodejs Bots 🤖 AI: OpenAI (GPT), prompt-based workflows 💻 Frontend: React, Next.js 💻 Backend: Python, Node.js 🗄 Databases: PostgreSQL, MongoDB, MySQL, Supabase ☁️ Infrastructure: Docker, AWS, CI/CD 🔍 Other: Web scraping, API integrations 🔗 Blockchain Integration: EVM, Solana, TON, SUI. 🤝 What You Can Expect ✔ Clear communication & realistic timelines ✔ Well-structured, documented workflows ✔ Scalable logic — not quick hacks ✔ Post-delivery support if adjustments are needed 📩 Let’s Work Together If you need workflow automation, AI integration, or want to replace manual work with reliable systems, feel free to message me. I’m happy to review your use case and suggest the best approach before we start.
$35/hr
$83 earned
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Blockchain Developer with 5+ years of experience building DeFi protocols, DEXs, lending platforms, NFT marketplaces, and cross-chain infrastructure. I specialize in smart contract development, protocol architecture, SDK design, and full-stack blockchain applications across EVM, Solana, Aptos, and Sui ecosystems. My experience includes DEX aggregators, lending protocols, dark pool trading systems, NFT marketplaces, staking systems, liquidity management, routing engines, and wallet integrations. Technical expertise: • Solidity, Rust, Move, TypeScript, Go • EVM, Solana, Aptos, Sui • Smart Contracts & Protocol Design • SDK Development & Blockchain Integrations • DeFi, DEX, Lending, NFT Infrastructure • Smart Contract Security & Gas Optimization I have contributed to production blockchain products serving real users and managing significant on-chain value, including lending and trading protocols with large-scale liquidity. I focus on writing secure, maintainable, and efficient code while delivering reliable solutions from architecture design to deployment. If you’re building a DeFi protocol, blockchain infrastructure, SDK, or smart contract system, I’d be happy to help.
$15/hr
100% Job Success
$10K+ earned
Offers consultations
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Hello and welcome to my Upwork profile! 🌟 About Me: I'm a seasoned Full Stack Developer with over 8+ years of experience specializing in MERN stack development and Web3/Blockchain technologies. With a proven 100% Job Success Score on Upwork, I deliver high-quality, scalable digital solutions. 💻 Core Technical Expertise: MERN Stack Mastery: - MongoDB, Express.js, React.js, Node.js, GraphQL - RESTful API development and database optimization - Modern React development with hooks and state management - Server-side architecture and microservices Web3 & Blockchain Knowledge: - Smart contract integration and worked upon DApp development - Ethereum blockchain interaction (Web3.js, Ethers.js) - Cryptocurrency wallet integration and NFT development - Decentralized application frontend development Additional Skills: - TypeScript, Next.js, GraphQL - Cloud deployment (AWS, GCP, Azure) - Database management (PostgreSQL, MySQL, Redis) - DevOps and CI/CD pipelines 🏆 Why Choose Me: - Top-rated developer with consistent 5-star feedback - Experience across fintech, healthcare, e-commerce, and blockchain sectors - Modern development practices and clean code principles - Continuous learning and staying current with latest technologies 📈 Services: - Full-stack web application development - API development and third-party integrations - Blockchain integration and smart contract development - E-commerce platform development - Database design and performance optimization 📞 Let's Connect: Ready to transform your ideas into powerful digital solutions? I'm committed to understanding your requirements and delivering exceptional results. Let's discuss how my MERN stack and Web3 expertise can accelerate your project's success. Feel free to reach out for a consultation!
John Philip M.
$45/hr
90% Job Success
$70K+ earned
Offers consultations
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Expert Community Manager, Social Media Manager, and AI Content Strategist with proven delivery across Web2, Web3, and AI-driven brands. Building a project. Scaling awareness. Automating presence. I execute from ground-up to optimized. Platforms covered: Discord • Twitter/X • Facebook • Instagram • Telegram • Reddit • TikTok • LinkedIn Core Functions: Identify high-tension, decision-stage conversations across relevant subreddits Enter threads with native, context-matching responses Redirect attention toward product without breaking trust or platform norms SaaS Brand Exposure Model Target keywords founders and users already search Place responses in threads that rank on search engines and AI summaries Ensure brand mentions persist in long-tail discussions Convert comment visibility into trial signups and inbound leads Execution System Subreddit mapping based on ICP (founders, CTOs, operators) Thread qualification: intent > traffic Response engineering: natural tone, no templates, no spam signals Strategic mention insertion only when context supports it Multi-touch presence across related threads to reinforce recall What Gets Built Search-indexed Reddit footprint for your SaaS Evergreen threads that continue bringing users over time Authority positioning through repeated high-value contributions Community familiarity with your product without aggressive promotion What Founders Actually Get Consistent brand exposure in places where users make decisions Higher-quality traffic vs paid ads or cold outreach Reduced CAC through organic discovery Threads that compound in value instead of expiring Operating Principles No bots, no automation footprints No forced engagement or artificial volume Strict alignment with subreddit culture Long-term authority over short-term spikes Outcome Reddit becomes a durable distribution layer for SaaS, feeding both search engines and AI systems with context-rich mentions that convert without direct selling
John Philip M. has worked .
Lukas T.
$120/hr
100% Job Success
$300K+ earned
Available now
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I specialize on building AI apps such as: - RAG based chatbots - AI generated content - AI agents including orchestrators I was the main developer of amoti.ai, a SaaS platform offering chatbots, AI emails and AI social media post generation. My stack is Next.js (Typescript, Tailwind, React, Node.js, MongoDB, PostgreSQL) but I can also easily work with Python. I am a fullstack developer. On the backend, I am able to develop software architectures that are able to combine many features (e.g. chatbots). On the frontend I enjoy designing modern-looking, intuitive and minimalist user interfaces. I am your choice if you need * very fast development of MVPs/POCs or new features from scratch * a scalable, maintainable software architecture using clean code practices