Senior Web3 Software Engineer
About The Position
Our client is a pioneer in the blockchain sector, developing a high-performance operating system designed to redefine scalability and throughput for Ethereum. By combining parallel transaction execution with advanced state minimization, our client’s platform overcomes traditional protocol limitations to provide a groundbreaking environment for decentralized development. Since its initial launch in 2019, the organization has remained dedicated to enhancing Ethereum's ecosystem through technical innovation, including the creation of a bespoke virtual machine and a specialized programming language. The team is a globally dispersed group of innovators committed to shaping the future of blockchain technology through secure, decentralized, and high-throughput solutions. Our client is seeking a Senior Web3 Software Engineer to lead the development of high-performance decentralized applications (dapps). This individual will own major product surfaces end-to-end—from frontend interfaces to on-chain integrations—collaborating across product, design, and smart contract teams to deliver secure and intuitive experiences for traders and users.
Requirements
- 5+ years of software engineering experience, with at least 2 years in a senior or lead capacity specifically building Web3 or blockchain applications.
- Frontend Expertise: Deep proficiency in modern frameworks (React, Next.js, or Vue) using TypeScript/JavaScript, alongside Web3 libraries (ethers.js, viem, wagmi).
- Dapp Specialization: Strong experience developing complex, data-intensive dapps that handle real-time streams, such as order books or AMM curves.
- On-Chain Interaction: Proven ability to manage browser wallet connections and execute on-chain interactions via providers (Alchemy, Infura) and libraries for reads, writes, and calls.
- Security Literacy: A solid grasp of Web3 security principles, including private key management, blind signing risks, and mitigation of sandwich attacks or phishing.
- Full-Stack Awareness: Experience with Node services (Express, FastAPI), off-chain indexers (The Graph), and event listening mechanisms.
- Data Management: Proficiency in REST/GraphQL, data fetching (SWR, TanStack Query), and state management (Zustand, Redux) within volatile market contexts.
Nice To Haves
- Previous experience at a Centralized (CEX) or Decentralized Exchange (DEX).
- Experience building trading UIs featuring order books, candlestick charts, and PnL calculators.
- Performance tuning for high-throughput DeFi applications (sub-ms latency, WebSockets).
- Prior work in fintech or DeFi involving tokenomics or audited protocols.
Responsibilities
- Dapp Development: Design, build, and maintain modern, responsive frontend applications integrated with blockchain protocols for core DeFi products and exchanges.
- Protocol Integration: Implement integrations with blockchain infrastructure (e.g., EVM chains, custom VMs), wallet extensions (MetaMask, Phantom, WalletConnect), and on-chain data sources such as subgraphs and indexers.
- Security & User Flow: Execute secure user flows for transactions, multi-sig approvals, cross-chain bridging, and account abstraction.
- Infrastructure Collaboration: Contribute to API design (REST/GraphQL), RPC optimization, and indexer queries to ensure high-performance, real-time data delivery.
- Technical Leadership: Establish frontend architecture, design systems, and Web3 best practices, including gas optimization, reentrancy guards, and accessibility.
- Mentorship & Code Quality: Perform rigorous code reviews (including Solidity/Sway), mentor engineering staff, and drive strategic decisions regarding stack interoperability and scalability.
- UX Optimization: Translate complex DeFi requirements, such as MEV protection and oracle feeds, into intuitive UI/UX for professional trading interfaces.
- Roadmap Strategy: Proactively identify technical debt, propose infrastructure upgrades, and technically shape the product roadmap.
Benefits
- High-Impact Ownership: The opportunity to lead the development of critical dapps at the intersection of Web2 and Web3.
- Full-System Autonomy: Freedom to architect complete systems, spanning from UI to smart contracts and off-chain bots.
- Expert Collaboration: Work alongside a globally dispersed team of deep blockchain experts focused on network and DeFi innovation.
- Innovative Environment: Access to cutting-edge tools and a mission-driven culture dedicated to shaping the future of decentralized finance.
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What This Job Offers
Job Type
Full-time
Career Level
Mid Level
Education Level
No Education Listed
