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Urgent! Web3 Frontend Engineer (React, DeFi & Blockchain UI) Job | Polcode
100% remotely or in our office: Warszawa
B2B: 110-130 PLN/H
We’re a global, people-first software house matching ambitious developers with challenging projects.
Our team of over 100 professionals helps build and improve digital businesses, software platforms, eCommerce stores, websites, apps, and everything in between.
And they’re good at it.
We’re looking for an independent, proactive, and growth-oriented Frontend Developer (Web3/DeFi) to join our team and take part in an exciting project for one of our clients.
You’ll build intuitive, secure, and high-performance interfaces for decentralized applications - enabling seamless interaction with smart contracts and on-chain data. This position is ideal for someone at least on a mid or senior level, passionate about Web3, blockchain integrations, and DeFi protocols, and eager to make a real impact in the decentralized space.
It’s a long-term, full-time collaboration with plenty of room for learning, and contribution to cutting-edge blockchain products.
Craft responsive, accessible interfaces for Web3 and DeFi applications that feel effortless to use
Build dynamic dashboards and visual tools that make interaction with on-chain data and smart contracts straightforward and engaging
Collaborate with backend, product, and smart contract teams to turn complex blockchain ideas into clear, intuitive user experiences
Take part in architecture discussions and help shape the technical direction through well-written documentation and thoughtful feedback
Integrate Web3 functionality with tools like ethers.js, web3.js, or wagmi, connecting to wallets such as MetaMask, WalletConnect, and Ledger
Ensure secure wallet operations and safe user transactions by following Web3 security best practices
Keep our dApps fast and efficient, optimizing transaction flows, frontend performance, and gas usage
Write modular, maintainable code with a strong focus on testing and long-term reliability
Implement real-time data flows and live updates from blockchain networks and protocols
Stay curious - explore and experiment with the latest Web3 frameworks, tools, and technologies to bring fresh perspectives to the product
Solid frontend experience at a mid or higher level - ideally 3+ years working with React, TypeScript, and modern JavaScript (ES6+)
Proven experience with Web3 integrations (ethers.js, web3.js, wagmi, thirdweb)
Understanding of DeFi mechanics, smart contracts, and EVM-based blockchains
Familiarity with wallet integrations (MetaMask, WalletConnect, Ledger, Trezor)
Experience in state management (Redux, Zustand, Recoil or similar)
Solid knowledge of CSS frameworks (Tailwind, styled-components, MUI)
Experience with testing tools (Jest, React Testing Library, Cypress)
Good understanding of CI/CD workflows, Git, and performance optimization
Independent thinker with a problem-solving mindset, accuracy, and commitment to delivering high-quality results
Comfortable working in a distributed team and communicating in English (min.
B2)
Experience working with multi-chain ecosystems and DeFi protocols
Ability to read or write Solidity smart contracts and understand contract architecture
Familiarity with The Graph, GraphQL, and on-chain indexing tools
Experience with Next.js, Hardhat, or blockchain explorers (Etherscan APIs)
Knowledge of Web3 security principles and dApp security layers
Understanding of NFT standards (ERC-721, ERC-1155) and marketplaces
Experience integrating hardware wallets and optimizing transaction signing UX
Interest in contributing to open-source Web3 projects and exploring emerging blockchain frameworks
Frontend: React (main framework), with optional Vue.js or Svelte when needed
Languages: TypeScript and modern JavaScript (ES6+)
Web3 libraries: ethers.js, web3.js, wagmi, and thirdweb SDK
Styling: Tailwind CSS, styled-components, and Material-UI for polished UIs
Testing: Jest, React Testing Library, Cypress, and Playwright
Build tools: Webpack and Vite to keep things fast and smooth
APIs: REST, GraphQL, and JSON-RPC
Wallets: MetaMask, WalletConnect, Coinbase Wallet, and Safe
Multisport card, private medical care, life insurance, and meaningful gifts to celebrate important days
Professional onboarding process
We respect your private life - no overtime, no weekend jobs, work-life balance only, promise!
Work at times that suit your daily rhythm, from the place of your choice
Your work is appreciated - we believe in the power of feedback, also the one you give us
100% remote work
0% nonsense
We strongly believe that putting people first makes our work better.
We encourage you to grow your career, contribute to open source, and follow your passion.
We wanna do great things with you! 💜
✨ Smart • Intelligent • Private • Secure
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Unlock Your Web3 Frontend Potential: Insight & Career Growth Guide
Real-time Web3 Frontend Jobs Trends in Warsaw, Poland (Graphical Representation)
Explore profound insights with Expertini's real-time, in-depth analysis, showcased through the graph below. This graph displays the job market trends for Web3 Frontend in Warsaw, Poland using a bar chart to represent the number of jobs available and a trend line to illustrate the trend over time. Specifically, the graph shows 209 jobs in Poland and 70 jobs in Warsaw. This comprehensive analysis highlights market share and opportunities for professionals in Web3 Frontend roles. These dynamic trends provide a better understanding of the job market landscape in these regions.
Great news! Polcode is currently hiring and seeking a Web3 Frontend Engineer (React, DeFi & Blockchain UI) to join their team. Feel free to download the job details.
Wait no longer! Are you also interested in exploring similar jobs? Search now: Web3 Frontend Engineer (React, DeFi & Blockchain UI) Jobs Warsaw.
An organization's rules and standards set how people should be treated in the office and how different situations should be handled. The work culture at Polcode adheres to the cultural norms as outlined by Expertini.
The fundamental ethical values are:The average salary range for a Web3 Frontend Engineer (React, DeFi & Blockchain UI) Jobs Poland varies, but the pay scale is rated "Standard" in Warsaw. Salary levels may vary depending on your industry, experience, and skills. It's essential to research and negotiate effectively. We advise reading the full job specification before proceeding with the application to understand the salary package.
Key qualifications for Web3 Frontend Engineer (React, DeFi & Blockchain UI) typically include Computer Occupations and a list of qualifications and expertise as mentioned in the job specification. Be sure to check the specific job listing for detailed requirements and qualifications.
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Before the Interview:To prepare for your Web3 Frontend Engineer (React, DeFi & Blockchain UI) interview at Polcode, research the company, understand the job requirements, and practice common interview questions.
Highlight your leadership skills, achievements, and strategic thinking abilities. Be prepared to discuss your experience with HR, including your approach to meeting targets as a team player. Additionally, review the Polcode's products or services and be prepared to discuss how you can contribute to their success.
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