Solidity Experts For Hire
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Sponsored Freelancers
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ZAWN Tech is a trusted software company founded in 2014, delivering complete digital solutions for startups and enterprises worldwide. Our certified developers combine deep technical knowledge with real-world project experience to build fast, secure, and scalable systems. Core Expertise Blockchain: Metaverse, Web3,...ZAWN Tech is a trusted software company founded in 2014, delivering complete digital solutions for startups and enterprises worldwide. Our certified developers combine deep technical knowledge with real-world project experience to build fast, secure, and scalable systems. Core Expertise Blockchain: Metaverse, Web3, NFTs, NFT Games, Smart Contracts, Arbitrage & Sniper Bots, DEX / DApp Development (Ethereum, BSC, Polygon, Solana, WAX). Web & SaaS Development: Full-stack using React, Node.js, Laravel, Django, and Next.js. Integration with Odoo, Bubble.io, Zoho, and Webflow. eCommerce: Shopify, WooCommerce, Magento, and custom marketplace platforms with payment, shipping, and ERP integrations. Mobile Apps: Native and cross-platform (Flutter, React Native, Android, iOS). AI & Computer Vision: Chatbots, GPT integrations, TensorFlow, OpenCV, and OCR systems. Game Development: Unity 3D, Unreal, and WebGL with multiplayer, blockchain, and AR/VR support. Trading & Financial Automation: MT4/5, TradingView, Binance, Interactive Brokers, and algorithmic trading bots. Hardware & IoT: Arduino, Raspberry Pi, ESP32, MATLAB, embedded control, and automation projects. With 200+ recommendations and over a decade of experience, we turn complex ideas into reliable, production-ready solutions — delivered with clear communication and long-term support. less
Hire AwaisChaudhry
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I design and build production-grade digital systems — from advanced blockchain protocols and DeFi platforms to AI-powered trading tools and scalable web/mobile applications. My expertise sits at the intersection of Blockchain Engineering, AI Automation, and Full-Stack Development, allowing me to deliver complete,...I design and build production-grade digital systems — from advanced blockchain protocols and DeFi platforms to AI-powered trading tools and scalable web/mobile applications. My expertise sits at the intersection of Blockchain Engineering, AI Automation, and Full-Stack Development, allowing me to deliver complete, real-world products — not just isolated pieces of tech. 🚀 Core Expertise ① Blockchain & DeFi Engineering I build secure, scalable smart contract systems and the platforms around them. Smart Contracts (Solidity / EVM) ERC-20, BEP-20, ERC-721, ERC-1155 token standards Token launches with presales, treasury logic, fee systems Reflection, burn/mint mechanics, advanced tokenomics Vesting, Lockups & Distribution Team, seed, and marketing vesting vaults Airdrop + claim systems Token distribution dashboards Security & Governance Multisig wallets, timelocks, role-based permissions Anti-bot protections, max wallet/tx, cooldowns Whitelists, blacklists, and upgradeable proxy patterns Staking, Rewards & Liquidity Staking/farming vaults and reward engines Presale + claim portals AMM & DEX integrations (Uniswap / PancakeSwap style) Chainlink oracles, subgraphs, and on-chain analytics Chains & Tools Ethereum, BNB Chain, Polygon, Arbitrum, Base Hardhat, Foundry, OpenZeppelin, Ethers.js, Web3.js, Wagmi, Viem, The Graph, IPFS Security Focus Full test suites, fuzz & invariant testing, gas optimization, and audit preparation/fixes. ② AI, Trading & Automation Systems I build intelligent, risk-aware trading and automation tools that operate across crypto and traditional markets. Strategy design & backtesting (Python, EasyLanguage) MetaTrader (MQL4/5) indicators, Expert Advisors, risk modules Exchange & broker API integrations Risk controls: drawdown limits, position sizing, daily loss caps Data pipelines, performance reporting, and monitoring Light ML models for signal filtering, anomaly detection, and optimization Hybrid systems combining on-chain data + CEX/DEX feeds + AI logic ③ Web, Mobile & Backend Development I don’t just build contracts — I build the entire product ecosystem around them. Web Frontend React, Next.js, Vue, Tailwind DApp interfaces, token dashboards, admin panels, investor analytics Mobile Apps React Native & Flutter Wallet views, staking interfaces, notifications, companion crypto apps Backend & APIs Node.js (Express), Python (Django/FastAPI) REST & GraphQL APIs PostgreSQL/MySQL, Redis, job queues, webhooks Infrastructure & DevOps AWS, Firebase, Docker, CI/CD pipelines Monitoring, logging, and security hardening 🎯 What You Actually Get ✔ Audit-ready tokens and DeFi smart contracts ✔ Staking, vesting, and lockup systems with clean user dashboards ✔ Complete crypto platforms: Smart Contracts + Backend + Frontend + Mobile (optional) ✔ AI-powered trading bots with professional risk management ✔ Clean architecture, documented code, and smooth handover to your team less
Hire freelancerjohnr1
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I am a highly skilled Full-Stack & eCommerce Developer with expertise in building scalable, secure, and high-performance web applications. With a strong foundation in React, Vue.js, Node.js, NestJS, Laravel, and database management (MongoDB, PostgreSQL, MySQL), I specialize in developing modern web platforms, APIs,...I am a highly skilled Full-Stack & eCommerce Developer with expertise in building scalable, secure, and high-performance web applications. With a strong foundation in React, Vue.js, Node.js, NestJS, Laravel, and database management (MongoDB, PostgreSQL, MySQL), I specialize in developing modern web platforms, APIs, and complex backend systems. I have extensive experience in Shopify, WooCommerce, BigCommerce, Magento, and custom eCommerce solutions, helping businesses build, optimize, and scale their online stores. From theme customization and app development to third-party integrations, performance optimization, and automation, I ensure seamless and high-converting eCommerce experiences. Beyond web development, I specialize in web scraping, data automation, and AI-driven solutions using Python, Selenium, Puppeteer, and BeautifulSoup to extract, process, and analyze data efficiently. I integrate AI models for automation, predictive analytics, and intelligent data processing, enhancing decision-making and operational efficiency. I also have a strong background in blockchain development, working with Solidity, Ethereum, Binance Smart Chain (BSC), Polygon, and Rust for Solana to build smart contracts, NFT marketplaces, DeFi applications, crypto wallets, and blockchain-based payment gateways. I ensure secure and efficient Web3 integrations for decentralized applications. I am passionate about delivering cutting-edge solutions that merge eCommerce, AI automation, web development, and blockchain technology to drive innovation and business growth. Whether you need a scalable eCommerce store, AI-powered automation, data scraping solutions, or secure blockchain implementations, I am here to help. Let’s build the future of intelligent, data-driven, and scalable applications together! less
Hire justinw45
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rofikulislam96 rofikulislam96
$25 USD / hour
Blockchain • Cloud • Mobile • Web • MarketingBangladeshI design and build secure, scalable, and high-performance applications across web, mobile, and blockchain ecosystems. My goal is to turn ideas into reliable, future-ready software that delivers real business impact. Core Expertise Frontend: React, Vue.js, jQuery, TailwindCSS Backend: Laravel, Django, FastAPI,...I design and build secure, scalable, and high-performance applications across web, mobile, and blockchain ecosystems. My goal is to turn ideas into reliable, future-ready software that delivers real business impact. Core Expertise Frontend: React, Vue.js, jQuery, TailwindCSS Backend: Laravel, Django, FastAPI, Node.js Mobile: Flutter (Android & iOS) Blockchain: DApps, Smart Contracts, Web3 Integration Cloud & DevOps: AWS, Azure, Docker, Kubernetes Database: MySQL, PostgreSQL, MongoDB Services • Blockchain & DApp Development • Full-Stack Web & Mobile Applications • API Development & System Integration • UI/UX Implementation & Optimization • Performance Tuning & Ongoing Maintenance • Alongside development, my expert social media marketing team helps businesses strengthen their digital reach. We handle content creation, audience growth, and targeted campaigns designed to boost brand awareness and conversions. I focus on quality, communication, and precision — delivering solutions that are robust, maintainable, and built to scale. Let’s collaborate to build something exceptional. less
Hire rofikulislam96
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onkarkulkarni8 onkarkulkarni8
$28 USD / hour
Web |Mobile| Blockchain| CMS|TOP 1%|Verified by FLIndiaHello, Welcome to MAK Online Solutions Private Limited (MAKOS), one of the top IT agencies here on Freelancer. Based out of India, our team of 43 talented professionals offers the talent, knowledge, and customer service skills to take your project from potentially good to truly amazing! Our team has worked on...Hello, Welcome to MAK Online Solutions Private Limited (MAKOS), one of the top IT agencies here on Freelancer. Based out of India, our team of 43 talented professionals offers the talent, knowledge, and customer service skills to take your project from potentially good to truly amazing! Our team has worked on some amazing projects with clients from over 35 different countries, handling jobs big and small while maintaining the same consistency and quality throughout. We offer a variety of services involving: ? Mobile Development ? Web Development ? ERP ? Desktop Applications ? Websites ? Marketplace Platforms ? Cryptocurrency ? NFT Development We have a wide and varied tech stack, and we aren't afraid to take on any project you may have for us. Ultimately, it's our mission to provide excellent services that make your life easier, your business more efficient, and your vision a reality, all without gouging your bank account. Whether you need Blockchain Development or Health Care IT Solutions, we are the team for you! We're honest, dedicated, and always ready to show you the TRUE potential of your business' IT capabilities. So, if you're interested, reach out and let us know what we can do for you! We're always available, and happy to take on your challenges! Thanks, and have a great day! less
Hire onkarkulkarni8
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Rashid Tech Solutions is a systems-focused engineering and development practice with over 5 years of hands-on experience delivering reliable, production-ready solutions across software, cloud, automation, and embedded systems. We specialize in projects where multiple technologies must work together seamlessly —...Rashid Tech Solutions is a systems-focused engineering and development practice with over 5 years of hands-on experience delivering reliable, production-ready solutions across software, cloud, automation, and embedded systems. We specialize in projects where multiple technologies must work together seamlessly — software with hardware, cloud with automation, and logic with real-world operational constraints. Our work is driven by solid architecture, clean implementation, and solutions designed for long-term use, stability, and growth. 🔧 Core Capabilities Systems & Full-Stack Development End-to-end design and development of web platforms, backend services, APIs, dashboards, and mobile applications, built for scalability, security, and maintainability. Cloud, DevOps & Infrastructure Architecture and operations across AWS, Azure, and Google Cloud, including CI/CD pipelines, deployments, monitoring, performance optimization, and production hardening. Automation & Integrations Custom automation, workflow optimization, system integrations, bots, and backend processes to reduce manual work and improve operational reliability. Embedded Systems & Industrial Automation Development and integration of embedded systems, IoT devices, electronics, PCBs, PLCs, SCADA, and hardware–software interfaces for industrial and automation use cases. AI & Data-Driven Features Practical AI and machine-learning integrations such as computer vision, OCR, analytics, and intelligent system enhancements — applied where they deliver real, measurable value. Specialized & Custom Solutions Blockchain systems, trading tools, telephony platforms, and other domain-specific solutions when projects require deeper technical customization. 👥 Team & Delivery Model For larger or time-critical projects, I work with a small, trusted technical team, while personally managing and reviewing all work. This ensures clear communication, consistent quality, and a single point of accountability for the client. 🤝 Post-Delivery Support Delivery does not end at handover. We provide clear documentation, support, fixes, and ongoing assistance when required, ensuring systems remain stable, understandable, and easy to maintain over time. Our approach is reflected in consistent positive feedback from previous clients, who value technical ownership, clear communication, and dependable delivery. If you’re looking for a technical partner who thinks long-term and takes responsibility beyond launch, Rashid Tech Solutions is ready to support your project. less
Hire rashidamjad
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🏆 Preferred Freelancer | Top 3% on Freelancer.com Macromodule Technologies is a technology consulting and product development company delivering enterprise-grade blockchain, AI, and digital platform solutions for global clients. We operate with a dedicated team of engineers, architects, and project managers,...🏆 Preferred Freelancer | Top 3% on Freelancer.com Macromodule Technologies is a technology consulting and product development company delivering enterprise-grade blockchain, AI, and digital platform solutions for global clients. We operate with a dedicated team of engineers, architects, and project managers, providing structured delivery, documentation, and long-term support for mission-critical systems. Over 10+ years, we have successfully delivered scalable platforms, including wallets, exchanges, analytics systems, and automation tools for clients across the GCC, US, and Europe. Our Core Services • Blockchain & Web3: Wallets, DEX/CEX, L2, TON, Polygon • AI & Data: Analytics, Automation, Intelligence Systems • Product Engineering: Mobile & Web Platforms • Cloud & DevOps: Secure, High-Availability Infrastructure Why Partner With Us • Company-level governance and contracts • Dedicated project teams • Transparent reporting and milestones • Long-term maintenance & support If you’re looking for a reliable technology partner rather than an individual freelancer, let’s discuss your project. less
Hire macromodule
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Hello, I'm Harsh, an accomplished developer with over 8 years of hands-on experience in crafting dynamic web and app solutions . My journey began in a dynamic IT company where I honed my skills while collaborating on innovative projects. Now, I've embarked on a freelancing adventure to bring my expertise directly to...Hello, I'm Harsh, an accomplished developer with over 8 years of hands-on experience in crafting dynamic web and app solutions . My journey began in a dynamic IT company where I honed my skills while collaborating on innovative projects. Now, I've embarked on a freelancing adventure to bring my expertise directly to clients like you. ➡️Our Tech-Stack- ➡️Front-end ✅HTML ✅CSS ✅Tailwind Css ✅Material UI ✅Bootstrap ✅JavaScript ✅TypeScript ✅React.js ✅Next.js ✅React Native ✅Redux ➡️Back-end ✅Node.js ✅Express.js ✅Flask ✅Django ➡️Databases ✅MongoDB ✅MySQL ➡️DevOps ✅Linux ✅Git ✅GitHub ✅Docker ✅CI/CD ➡️Cloud Services ✅AWS (EC2, Amplify, S3, Route53, RDS etc.) ✅GCP ✅Digitalocean ✅Hostinger ✅Godaddy ➡️UI/UX Design ✅Figma ✅Adobe XD ➡️Blockchain ✅Solidity ✅Web3.js ✅ Ether.js less
Hire Web1devloper
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OweBest Technologies – Driving Digital Innovation & Business Growth OweBest Technologies is a leading, fast-growing IT solutions company based in India, delivering cutting-edge digital solutions to help businesses unlock their full potential. We specialize in crafting scalable, secure, and high-performance software...OweBest Technologies – Driving Digital Innovation & Business Growth OweBest Technologies is a leading, fast-growing IT solutions company based in India, delivering cutting-edge digital solutions to help businesses unlock their full potential. We specialize in crafting scalable, secure, and high-performance software tailored to your unique business needs. Our Expertise Includes: 1. Artificial Intelligence (AI) Solutions – Generative AI, Agentic AI (autonomous agents), Predictive AI (ML models), Vision AI (computer vision), Speech & Voice AI, Recommendation Engines, and Natural Language Processing (NLP). 2. Web Design & Development – Custom, responsive, and SEO-optimized websites. 3. Mobile App Development – Native and hybrid apps for Android & iOS. 4. PHP Development – High-performance, custom PHP solutions using frameworks – Laravel, CodeIgniter, CakePHP, Symphony. 5. Full-Stack JavaScript Development – Node.js, AngularJS, Express.js, React.js. 6. MERN and MEAN Development - PWA, SPA and Server Side Rendering 7. Python Development – Django, Flask, and FastAPI for robust web apps & APIs. 8. CMS & E-Commerce – WordPress, Magento, Shopify and Shopware. 9. Microsoft .NET MVC Development – Secure enterprise solutions. 10. Cloud Solutions & DevOps – AWS, Azure, Google Cloud, serverless architecture, CI/CD pipelines. 11. Firebase Development – Real-time applications, authentication, and cloud storage solutions. 12. Cross-Platform Development – Flutter & React Native mobile apps. 13. Enterprise Solutions – Odoo ERP, Hubspot, Zoho, Salesforce CRM customization & automation. 14. Machine Learning & Data Science – Data-driven decision-making tools. 15. Blockchain & Cryptocurrency Development – Secure DApps & exchange platforms. 16. Database Solutions – MongoDB, Mysql, Postgres, MsSql. 17. Cybersecurity Services – Penetration testing & vulnerability assessment. 18. Digital Marketing & SEO Services – Search engine optimization, PPC, social media marketing, and content strategy. We also excel in many other emerging and niche technologies to meet diverse business requirements. Why Choose OweBest Technologies? - Proven track record of delivering high-quality, result-driven projects - Transparent communication & agile development approach - Skilled team of developers, designers, and technology experts - Competitive pricing without compromising on quality Explore Our Portfolio – Our work reflects our commitment to innovation, precision, and client satisfaction. Partner with OweBest Technologies – Where ideas meet innovation and technology fuels growth. Best Regards, Team OweBest Technologies less
Hire owebest
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arhamsoftltd arhamsoftltd
$65 USD / hour
Award-Winning ISO-Certified IT firm | Among Top 1%United States: ArhamSoft LLC is an ISO-certified software development company, proudly serving clients worldwide since 2007. With a strong presence across the USA, UK, Germany, UAE, and Saudi Arabia, we have delivered innovative, scalable, and business-driven solutions to organizations of all sizes. Over the years, we have had...: ArhamSoft LLC is an ISO-certified software development company, proudly serving clients worldwide since 2007. With a strong presence across the USA, UK, Germany, UAE, and Saudi Arabia, we have delivered innovative, scalable, and business-driven solutions to organizations of all sizes. Over the years, we have had the privilege of working with Fortune 500 companies, helping them achieve digital transformation with efficiency and excellence. As trusted technology partners, we hold official partnerships with Odoo, Salesforce, and Microsoft, enabling us to deliver cutting-edge solutions powered by the latest tools and platforms. With a team of dedicated professionals and a proven track record across industries, ArhamSoft continues to empower businesses with ERP systems, custom software, AI/ML, mobile applications, and enterprise-grade solutions that drive growth and long-term success. Our Expertise: - Artificial Intelligence (AI), Machine Learning (ML), and Natural Language Processing (NLP) - Blockchain & Web3 Solutions - Mobile App Development (iOS & Android) - Web Development & Custom SaaS Platforms - ERP & CRM Solutions (Odoo, Salesforce, Microsoft Dynamics) - Cloud Computing & Enterprise Software Integration & : - Presidential Award for Best Software Company - Clutch Top IT Service Provider - Pakistan Digital Award (PDA) 2021 - P@SHA ICT Award Winner (2021) - LCCI Best Software House Award & - ISO 9001:2015 Quality Management Systems - ISO 27001:2013 Information Security Management Salesforce Partner: https://appexchange.salesforce.com/appxConsultingListingDetail?listingId=a0NHu00000p0vBtMAI Odoo Partner: https://www.odoo.com/partners/arhamsoft-13313341 Microsoft Partner ? ISO Certified for Quality & Information Security Official Odoo, Microsoft & Salesforce Partner 18+ Years of Proven Industry Experience with 500+ global clients 100% Client Satisfaction Rate backed by long-term partnerships 230+ In-house Skilled Resources across AI, Web, Mobile, and Blockchain Full-Cycle IT Services: From strategy & development to deployment & support Proven Expertise in Complex, Enterprise-Scale Projects Strong QA & Security Practices ensuring compliance and reliability Customer-Centric Approach with transparent communication Agile & Scalable Delivery Models to fit startups, SMEs, and enterprises Award-Winning Company recognized for innovation & excellence : Looking to bring your next big idea to life or optimize your business with advanced technology? Lets make it happen together. Contact us today and discover how ArhamSoft can become your trusted technology partner. less
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