Solidity Experts Til ansættelse
Viser 56 resultater
Sponsorerede Freelancere
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freelancerjohnr1 freelancerjohnr1
$50 USD / timen
Top1% Web & Mobile | AI | BlockchainUnited StatesI 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 mindre
Ansæt 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! mindre
Ansæt justinw45
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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. mindre
Ansæt rashidamjad
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Senior Full-Stack Developer with 13+ years building production systems across AI, Web3, mobile, and backend infrastructure. Design and ship software end to end — backend architecture, AI integrations, mobile applications, and on-chain systems. Clean architecture, secure implementation, and delivery grounded in...Senior Full-Stack Developer with 13+ years building production systems across AI, Web3, mobile, and backend infrastructure. Design and ship software end to end — backend architecture, AI integrations, mobile applications, and on-chain systems. Clean architecture, secure implementation, and delivery grounded in real-world constraints. Comfortable owning the full stack so projects move without coordination overhead. 🎯 SYSTEMS THINKING - Scalable, modular architecture - Edge cases addressed early - Long-term maintainability over quick patches AI & AUTOMATION - LLM-based systems, RAG pipelines, AI agents - OpenAI API and custom model integrations - Workflow automation and data pipelines BACKEND & WEB - FastAPI, RESTful APIs, authentication systems - React and Next.js applications - Real-time and event-driven architecture MOBILE APPS - API-first mobile architecture - Secure authentication and real-time features - Production-ready builds and deployment WEB3 - Smart contracts in Solidity and Rust - EVM and Solana ecosystems - DeFi protocols, token mechanics, on-chain integrations If you need someone who can take ownership, reduce moving parts, and ship cleanly without constant supervision, we’ll work well together. mindre
Ansæt diogos47
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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 mindre
Ansæt owebest
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danielboggs danielboggs
$60 USD / timen
Exceed Your Expectation! Let's Do It Together!!United StatesWe deliver custom software solutions across AI, web, mobile, e-commerce, blockchain, and automation. Our team brings 10+ years of experience designing and developing scalable digital products for startups, growing businesses, and modern online platforms. What we do: • AI automation and business workflow...We deliver custom software solutions across AI, web, mobile, e-commerce, blockchain, and automation. Our team brings 10+ years of experience designing and developing scalable digital products for startups, growing businesses, and modern online platforms. What we do: • AI automation and business workflow systems • Custom web and mobile app development • E-commerce platforms and custom store functionality • API development and backend integration • Blockchain applications and smart contract solutions • UI/UX-driven product implementation • Performance tuning, monitoring, and system improvement • QA, security, and CI/CD processes We believe strong products come from clear communication, practical engineering, and consistent execution. Our goal is to build solutions that are not only functional, but dependable, scalable, and ready for real business use. mindre
Ansæt danielboggs
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I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents...I’m an AI Agent Engineer, Automation Specialist, and Full-Stack Developer with a deep passion for embedding intelligence into real-world web and mobile products and eliminating manual business workflows through automation. My core focus is designing, building, and deploying AI-driven systems—from LLM-powered agents and voice assistants to data-aware automation pipelines that integrate seamlessly with production applications. I work extensively with large language models (LLMs), retrieval-augmented generation (RAG), vector databases, embeddings, tool-calling frameworks, and agent orchestration patterns to create systems that reason, act, and scale reliably. On the backend, I build high-performance APIs and services using FastAPI, Flask, Node.js, and Django, with strong experience in async architectures, background workers, and event-driven systems. I regularly work with PostgreSQL, MySQL, Redis, MongoDB, and Neo4j, and design robust data layers using SQLAlchemy, Prisma, and ORM/DAO patterns. For AI workloads, I integrate OpenAI, Anthropic, Ollama, ElevenLabs, and custom inference pipelines, alongside Qdrant, Pinecone, FAISS, and hybrid search setups. On the frontend, I build modern, scalable interfaces using React, Next.js, Vite, Tailwind CSS, and TypeScript, with a strong emphasis on UX for AI-powered tools (real-time streaming, agent state visualization, conversation flows, and admin dashboards). For mobile, I work with React Native and cross-platform architectures to bring AI features directly into user-facing apps. Automation is a major part of my work. I design end-to-end business automation systems using Make.com, n8n, webhooks, cron jobs, message queues, and direct API integrations. This includes automating CRM workflows, email systems, call routing, lead qualification, reporting, and data synchronization across platforms like Twilio, Slack, Google Sheets, Stripe, Shopify, and internal tools. I’m highly experienced in AI voice agents and real-time systems, integrating Twilio, speech-to-text (STT), text-to-speech (TTS), streaming APIs, and conversational state management to build production-ready voice and chat agents. I also work on computer-vision and multimodal pipelines, combining vision models, tracking, and sensor data for advanced use cases. From an infrastructure and MLOps perspective, I deploy and scale systems using Docker, Linux servers, cloud VPS, CI/CD pipelines, and GPU-accelerated environments. I care deeply about observability, logging, error handling, security, and cost optimization in AI systems. Above all, I love turning business problems into automated, intelligent systems—reducing operational friction, increasing efficiency, and building products where AI is not a feature, but a core capability. If you need AI agents, automation pipelines, or full-stack systems that actually work in production, that’s exactly what I build. mindre
Ansæt Lazarone1
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matheussilva114 matheussilva114
$30 USD / timen
FULL-STACK ENGINEER| DATA SCIENTIST| AI SPECIALISTBrazilAs a Senior Full-stack developer, Data Scientist and AI/ML Engineer with over 6 years of experience, I specialize in designing, developing, and deploying Software Products with good machine learning solutions. My expertise spans across Machine Learning, Deep Learning, NLP, Computer Vision, and Generative AI,...As a Senior Full-stack developer, Data Scientist and AI/ML Engineer with over 6 years of experience, I specialize in designing, developing, and deploying Software Products with good machine learning solutions. My expertise spans across Machine Learning, Deep Learning, NLP, Computer Vision, and Generative AI, enabling businesses to harness the full potential of AI for automation, insights, and innovation. mindre
Ansæt matheussilva114
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am a detail-oriented, reliable, and driven Senior Solidity Developer with ten years of domain experience, looking for a company to contribute to with my skills and energy. My experience includes blockchain-based IoT, smart cities, collaborative robotics, NFTs, DeFi, blockchain gaming, NFT marketplaces, and more....am a detail-oriented, reliable, and driven Senior Solidity Developer with ten years of domain experience, looking for a company to contribute to with my skills and energy. My experience includes blockchain-based IoT, smart cities, collaborative robotics, NFTs, DeFi, blockchain gaming, NFT marketplaces, and more. During my time in the industry, I’ve published scientific articles and Ethereum Requests for Comments (ERCs), as well as mentored my peers to become better smart contract developers. mindre
Ansæt jan0x2A
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I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building...I build AI-driven backend systems that think, learn, and scale. Most companies use AI in fragments—a chatbot here, an automation there. I help startups and enterprises build complete AI ecosystems by integrating Large Language Models (LLMs) into robust, production-grade backend architectures. Whether you are building an AI SaaS MVP from scratch or adding RAG-based intelligence to an existing platform, I deliver clean, maintainable, and secure code. What I bring to your project: 1. AI Integration: Expert in OpenAI (o1/GPT-4), Claude 3.5, and Gemini 2.0. I specialize in RAG (Retrieval-Augmented Generation) and AI Agent workflows using LangChain and CrewAI. 2. Backend Excellence: Scalable microservices built with FastAPI, Python, or NestJS. I focus on high-concurrency, security, and performance. 3. Vector Infrastructure: Implementation of Pinecone, Weaviate, or PGVector for efficient data retrieval. 4. SaaS Architecture: Multi-tenant database design, Stripe subscription logic, and RBAC (Role-Based Access Control). Why work with me? - Speed to MVP: I focus on getting your AI SaaS to market in 3–6 weeks without technical debt. - Product Thinking: I don't just follow tickets; I ask "Why?" to ensure the feature actually drives user value. - Security First: I ensure your AI integrations are prompt-injection resistant and GDPR/SOC2 compliant. TECHNICAL STACK: - AI & LLM: OpenAI API, LangChain, RAG, Prompt Engineering, Vector DBs (Pinecone) - Backend: Python (FastAPI, Django), Node.js (NestJS, Express), Go - Databases: PostgreSQL, MongoDB, Redis, Supabase - Cloud & DevOps: AWS (Lambda, ECS), Docker, GitHub Actions, Vercel - Integrations: Stripe, Auth0, Twilio, HubSpot, Slack API mindre
Ansæt yuriihal
