About the job
Senior Web3 Software Engineer
Location: Remote - Poland
Employment Type: Full-time
Compensation: $170,000 - $195,000
Join mlabs, a trailblazer in the blockchain industry, as we develop a revolutionary operating system aimed at enhancing scalability and throughput for Ethereum. Our innovative platform utilizes parallel transaction execution and advanced state minimization to redefine the boundaries of traditional protocols, offering a robust environment for decentralized development.
Since our inception in 2019, we have consistently focused on enriching Ethereum's ecosystem through groundbreaking technical advancements, including a custom virtual machine and a specialized programming language. Our globally distributed team of forward-thinkers is dedicated to revolutionizing blockchain technology through secure, decentralized, and high-performance solutions.
We are currently seeking a Senior Web3 Software Engineer to spearhead the creation of high-performance decentralized applications (dApps). This role will encompass ownership of key product surfaces from frontend interfaces to on-chain integrations, working collaboratively across product, design, and smart contract teams to deliver secure and user-friendly experiences for traders and users.
Key Responsibilities
- Dapp Development: Design and develop modern, responsive frontend applications that integrate seamlessly 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: Ensure secure user flows for transactions, multi-sig approvals, cross-chain bridging, and account abstraction.
- Infrastructure Collaboration: Contribute to API design (REST/GraphQL), optimize RPC calls, and enhance indexer queries for real-time data delivery.
- Technical Leadership: Establish frontend architecture, design systems, and implement Web3 best practices including gas optimization and accessibility.
- Mentorship & Code Quality: Conduct rigorous code reviews (including Solidity/Sway), mentor junior engineers, and influence strategic decisions regarding stack interoperability and scalability.
- UX Optimization: Transform complex DeFi requirements into intuitive UI/UX for professional trading interfaces.
- Roadmap Strategy: Identify technical debt, recommend infrastructure upgrades, and help shape the product roadmap.

