Biconomy empowers Web3 developers to build seamless, user-friendly dApps that work effortlessly across multiple blockchains. Our battle-tested modular account and execution stack eliminates traditional UX friction points, helping projects accelerate user adoption while reducing development costs. By processing over 50 million transactions across the 300+ dApps we've served, we're powering the future of onchain economies.

The Role – Build the Protocol Powering the Future of Web3

As a Senior Backend Engineer on our Modular Execution Environment (MEE) team, you’ll help architect and scale the MEE protocol – a modular execution layer for advanced blockchain operations designed to horizontally scale blockchains in a multi-chain world. This is not just application development – you’ll be building foundational infrastructure that underpins decentralized, cross-chain supertransactions and smart account interactions.

You’ll work across the entire MEE stack:

• MEE Protocol – Develop the decentralized network and cryptoeconomic systems, working on P2P communication, slashing mechanisms, and storage proofs.

• MEE Network Infrastructure – Build the foundational infrastructure, from bundlers to validators, supporting the MEE protocol’s decentralization roadmap.

• Backend & Indexers – Design complex systems to aggregate, index, and interpret on-chain and off-chain data, powering real-time cross-chain operations.

• Implementing Supertransactions - Develop and refine a novel data type that defines cross-chain operations (EVM and non-EVM). Supertransactions aggregate multiple on-chain and off-chain interactions into a Merkle tree, enabling seamless, complex multi-chain execution.

What You Will Be Doing:

• Protocol Development – Contribute to core MEE protocol components, including slashing mechanisms, cryptoeconomic design, and validator infrastructure.

• Infrastructure Design – Build the backend infrastructure that facilitates MEE’s transition from centralized to fully decentralized P2P execution.

• Indexers & Aggregation – Develop and optimize indexing services that process and aggregate data across multiple blockchains into abstract supertransaction models.

• Cross-Chain Execution – Design systems to handle seamless cross-chain flows, enabling developers to execute complex, multi-chain transactions with minimal overhead.

• Scalable Backend Systems – Implement scalable microservices, APIs, and backend solutions to support high-throughput, low-latency blockchain interactions.

• Collaborate on Cutting-Edge Tech – Work with blockchain engineers, cryptographers, and product teams to integrate novel technologies like storage proofs, intent-based bridges, and gossip networks.

Requirements:

• Experience: 3+ years of backend development with a focus on blockchain protocols, infrastructure, or decentralized networks.

• Tech Stack: Proficiency in JavaScript/TypeScript, Node.js and Web3 frameworks (Ethers.js, viem).

• Blockchain Expertise: Deep understanding in any of the following:

  • Account Abstraction (AA)

  • 4337 Bundlers

  • Smart Accounts & EIP7702

  • Storage Proofs (e.g., Herodotus)

  • Intent-Based Bridges (e.g., Across, Connext)

  • Cross-Chain Messaging (e.g., Axelar, LayerZero)

  • Gossip Networks & P2P Systems

  • Liquidity Fronting

  • MEV, Flashbots & UserOps

  • Merkle Trees, Sequencers & Rollups

• Backend Mastery: Experience building high-performance, scalable infrastructure and working with decentralized architectures.

• Collaborative Approach: Proven ability to work cross-functionally across protocol, backend, and product teams in a fast-paced, iterative environment.
  

Nice-to-Have:

• Contributions to open-source blockchain infrastructure projects.

• Familiarity with optimistic rollups, zk-rollups, or modular execution environments.

• Experience developing validators, bundlers, or sequencers in a P2P blockchain environment.

• Understanding of MEV mitigation, frontrunning, and cross-chain arbitrage solutions.

• Familiarity with Rust and/or Go

What We Offer:

• Flexible Working Hours: Enjoy autonomy over your schedule.

• Generous Vacation Policy: 25 days vacation per year plus public holidays.

• Competitive Salary: With regular performance reviews.

• Token Allocation: Be rewarded with tokens as part of our compensation package.

• Growth Opportunities: Be part of an exciting new project with significant career growth potential.

• Innovative Work Culture: Join a team that’s at the cutting edge of Web3, AI, and DeFi, and help shape the future of the digital economy.

• Fun and Engaging Team Activities: Game nights, virtual celebrations, and work retreats to keep things exciting.

At Biconomy, we believe in creating a diverse and inclusive workplace. We are committed to being an equal-opportunity employer, and we do not discriminate based on race, national origin, gender, gender identity, sexual orientation, disability, veteran status, age, or any other legally protected status.