Hire the Best Blockchain Developers
in Portugal

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Vol P.

Lisbon, Portugal

$30/hr
5.0
1 jobs

Senior Full Stack Engineer, Technical Lead, and Web3 developer with 6+ years of experience building high-performance blockchain, AI, and distributed systems from concept to production. I specialize in Web3 product development, smart contract architecture, DeFi infrastructure, NFT marketplaces, token launchpads, crypto wallets, GameFi platforms, Telegram Mini Apps, and on-chain reward ecosystems. My technical stack includes Solidity, EVM-compatible chains, TON, Ethers.js, Web3.js, account abstraction, smart contract integrations, and blockchain-based payment systems. On the backend, I design scalable, event-driven architectures using NestJS, PostgreSQL, Redis, RabbitMQ, Kafka, and WebSockets, supporting real-time applications, high transaction throughput, and millions of user interactions. I focus on building secure, fault-tolerant systems that remain stable under rapid growth and heavy load. My AI background includes machine learning, speech recognition, NLP, intent detection, LLM integrations, workflow automation, and AI-powered applications for enterprise clients in banking, telecommunications, and digital products. Over the past several years, I have led and delivered 20+ products across Web3, AI, FinTech, and consumer applications, including platforms with 1M+ users, multi-million-dollar transaction volumes, NFT ecosystems, token launch platforms, crypto casinos, anti-detect browsers, and real-time gaming infrastructure. I work directly with founders and product teams, helping transform ideas into production-ready software through technical leadership, architecture design, rapid MVP delivery, and long-term product scaling. Core Expertise: • Web3 & Blockchain Development • Smart Contract Architecture (Solidity, EVM, TON) • DeFi, NFT, GameFi & Launchpad Platforms • Telegram Mini Apps & High-Load Systems • AI Applications & LLM Integrations • Distributed Systems & Event-Driven Architecture • Real-Time Infrastructure & WebSockets • Product Architecture & Technical Leadership • MVP Development & Startup Execution • Performance Optimization & Scalability Engineering From MVPs launched in under 30 days to platforms serving millions of users, I focus on building software that is scalable, secure, and ready for growth from day one.

  • Blockchain
  • Full-Stack Development
  • Smart Contract Development
  • Blockchain Development
  • Smart Contract
  • Web Development
  • Next.js
  • Web3
  • NFT
  • Telegram
  • Project Management
  • JavaScript
  • Python
  • Solidify
  • DeFi
  • React
  • Node.js
  • TypeScript
  • AI Development
  • NFT Marketplace
Pedro C.

Coimbra, Portugal

$25/hr
5.0
5 jobs

Your digital presence shouldn't be a headache; it should be your best salesperson. I am an AI Solutions Architect and entrepreneur specializing in rapid business-model engineering. I help founders and businesses skip the bloated development cycles. Using high-velocity, AI-driven sprints, I take your ideas from zero to shipped at lightning speed. My Expertise Includes: - High-Converting Landing Pages: Custom, lightning-fast digital storefronts built to capture leads. - Rapid MVP Sprints: Fully functional SaaS and Web apps launched in weeks to test your market. - AI & Automation: Custom LLM chatbots and automated workflows that save you hours. - Web3 Ecosystems: Clean dApp interfaces and blockchain integrations. I don't just deliver code; I deliver a complete, ready-to-launch business asset. Send me a message with your vision, and let's start building.

  • Blockchain
  • Blockchain Development Framework
  • Blockchain, NFT & Cryptocurrency
  • Blockchain Platform
  • Blockchain Security
  • Smart Contract Development
  • Blockchain Development
  • Cryptocurrency
  • Rust
  • Smart Contract
  • Software Development
  • Solidity
  • Web3
  • Next.js
  • JavaScript
  • Startup Consulting
  • Business Consulting
  • SEO Strategy
  • web3.js
  • Web Design
Dmytro H.

Cascais, Portugal

$45/hr
4.4
8 jobs

Building a FinTech app, crypto exchange, or DeFi protocol? I've shipped 15+ production-grade blockchain & fintech products — NeoBank apps, CEX/DEX platforms, DeFi protocols — that actually go live and scale. I'm Dmytro, a full-stack blockchain & fintech developer with 10+ years in software and 7+ years focused on Web3. I co-lead Codemotion (Top Rated Plus, 100% JSS, 495K+ hours billed), and take on select freelance projects directly where I'm personally hands-on from day one. ━━━ WHAT I BUILD ━━━ ✅ FinTech & NeoBank apps — crypto-to-fiat payments, KYC/AML flows, transaction dashboards, IBAN integration ✅ Crypto Exchanges — CEX and DEX platforms from scratch or white-label ✅ DeFi Protocols — liquidity pools, staking, yield farming, token bridges ✅ Smart Contracts — ERC-20/BEP-20/NFT, Solidity, audits (Hardhat) ✅ Crypto Wallets — multi-chain, custodial & non-custodial ✅ Trading Bots & Arbitrage Software ✅ Telegram Mini Apps & Web3 integrations ✅ Layer 2 Blockchain Platforms & custom chain solutions ━━━ RECENT PROJECTS ━━━ → Trastra — FinTech NeoBank with crypto card & IBAN for EU users → Leverex — Advanced crypto trading platform with optimized collateral use → Canvas — Layer 2 blockchain platform with DeFi dashboards & reporting ━━━ TECH STACK ━━━ Solidity · Rust · Solana · Ethereum · Polygon · Avalanche · Cardano · Polkadot React · Node.js · Web3.js · Ethers.js · HardHat · IPFS · Tron I write clean, secure, production-ready code. I communicate proactively, hit deadlines, and flag problems early — no surprises at launch. Have a project in mind? Send me a message with a brief description and I'll tell you how I'd approach it. 🚀

  • Blockchain
  • Solana
  • Ethereum
  • Rust
  • Smart Contract
  • Solidity
  • JavaScript
  • React Native
  • Web Development
  • Mobile App
  • Web3
  • Telegram
  • React
  • DeFi
  • NFT
  • Hybrid App Development
  • Mobile App Development
  • FinTech
  • Python
  • TypeScript
Alex N.

Lisbon, Portugal

$40/hr
5.0
1 jobs

Hi, I’m Alex. I build practical AI agents and automation systems that actually get used in production — not demos. Over the last 8+ years I’ve been working at the intersection of finance, Web3, and backend systems, and recently focused heavily on AI-powered agents and workflows. I work with LLM-based agents (task orchestration, tools, memory, integrations), automation pipelines, and custom AI assistants that plug into real products and operations. This includes deploying and customizing systems like Clawdbot, wiring agents into existing infra, APIs, databases, and internal tools. Previously, I built and shipped DeFi protocols, trading bots, and high-load backend systems, so I’m very comfortable with complex domains, reliability, and performance. That background helps a lot when AI agents need to work with real data, money, users, and edge cases. What I usually help with: • Setting up and customizing AI agents (LLM, tools, memory, workflows) • Integrating agents with APIs, databases, CRMs, Telegram/Slack, dashboards • Automation of ops, research, reporting, and internal processes • Turning “AI ideas” into something stable that runs daily without babysitting I like clean setups, simple UX, and systems that don’t break at 3am. If you need someone who understands both AI agents and real production systems — let’s talk. Tech I use daily: Python · TypeScript · Node.js · Rust · LLM APIs · Agent frameworks · Postgres · Redis · Docker · APIs · Webhooks · Telegram bots

  • Blockchain Architecture
  • Ethereum
  • Rust
  • NFT
  • Artificial Intelligence
  • React
  • Web3
  • AI Agent Development
  • AI App Development
  • Bot Development
  • Telegram
  • Python
  • TypeScript
  • JavaScript
Syed Wajahat H.

Lisbon, Portugal

$50/hr
4.6
8 jobs

👋 Hi there! I'm your go-to Full Stack Developer with a twist of Blockchain, AI, and SEO expertise! 🚀 🔥 I specialize in crafting beautiful, scalable, and high-performing web applications that leave a lasting impression. 💻 ✨ With my deep understanding of Blockchain technology, I can help you build decentralized applications that are secure, transparent, and revolutionize industries. 🌐🔗 🤖 Let's not forget about the power of AI! I can develop intelligent algorithms and machine learning models that bring automation and efficiency to your projects. 🤖⚡ 🔎 And guess what? I'm not just a coding whiz. I have a secret weapon in my arsenal – SEO! I can optimize your websites to climb the search engine rankings and attract organic traffic. 💡🔍 🎉 So, whether you need a stunning web application, a cutting-edge blockchain solution, AI-powered magic, or a boost in search engine visibility, I've got you covered! Let's team up and create something extraordinary! 🎉🚀

  • Blockchain
  • Ecommerce Website
  • WordPress
  • React
  • Shopify
  • PHP
  • Node.js
  • Web Application
  • Ecommerce Website Development
  • Ecommerce
  • Social Media Marketing
  • NFT
  • DeFi

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Cost to hire a Blockchain Developer

Cost to hire a Blockchain Developer

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Blockchain Developer job description template

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Blockchain Developer interview questions

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