Senior Web3 Engineer

We are seeking an experienced Senior Web3 Developer with deep expertise in Layer 1 blockchain architecture, decentralized exchange (DEX) design, smart contract development, and advanced security practices. The ideal candidate will have hands-on experience across multiple chains and ecosystems, including Aptos, Arbitrum, OKX, Bitcoin Taproot, and other Layer 1 and Layer 2 networks. This role requires extensive experience designing and optimizing high-performance Layer 1 protocols, building DEX architectures (AMM, orderbook, hybrid models), and implementing secure cross-chain and DeFi infrastructure. Proficiency in Solidity and Move is essential, along with strong knowledge of interoperability, MEV mitigation, and DeFi security models.

Key Responsibilities

-Layer 1 Architecture and Protocol Engineering Design and contribute to Layer 1 blockchain architecture, validator logic, and consensus mechanisms. Optimize L1 performance (throughput, finality, state management, gas models). Work on modular blockchain frameworks, rollups, and execution environments. Contribute to tokenomics design, staking systems, and validator incentives. Implement low-level blockchain components and protocol improvements.

-Decentralized Exchange (DEX) Development Architect and develop AMM-based DEXs (constant product, stable swap, concentrated liquidity models). Design and implement on-chain orderbook DEXs and hybrid exchange mechanisms. Develop liquidity management systems, routing algorithms, and aggregation strategies. Implement MEV mitigation strategies (anti-sandwich, anti-front-running). Optimize swap efficiency, slippage reduction, and gas usage. Build cross-chain DEX functionality and liquidity bridging solutions. Conduct economic attack modeling and simulation for DEX protocol safety.

-Smart Contract Development & Deployment Design, develop, and deploy secure smart contracts using Solidity and Move (.move). Implement cross-chain functionality, bridges, and interoperability solutions. Optimize contracts for gas efficiency, scalability, and security. Implement upgradeable contract architectures and proxy patterns.

-Blockchain Infrastructure Set up, run, and maintain full nodes, archive nodes, and validator infrastructure across multiple L1 and L2 networks. Operate staking and governance participation infrastructure. Manage RPC infrastructure and performance monitoring. Integrate with ecosystems including Aptos, Arbitrum, OKX, Bitcoin Taproot, Ethereum, and other networks.

-Security & Auditing Conduct in-depth smart contract audits (manual + automated using Slither, MythX, Echidna, Foundry, Certora, Tenderly). Identify and mitigate vulnerabilities including: Reentrancy Diamond proxy exploits Sandwich attacks Civil/Sybil attacks MEV/MBV (Miner/Maximal Extractable Value) Flash loan exploits Oracle manipulation Perform economic security reviews for DEX and DeFi systems. Implement secure upgradeability and governance mechanisms.

-Zero-Knowledge Proofs & Cryptography Develop and integrate ZK-proof systems for privacy-preserving transactions. Apply elliptic curve cryptography and advanced cryptographic primitives. Collaborate on novel cryptographic protocol designs. Explore ZK rollups and privacy-preserving DEX mechanisms.

-Collaboration & Documentation Work closely with product, research, and security teams. Create detailed protocol documentation and architectural specifications. Contribute to open-source initiatives and ecosystem tooling.

Skills & Experience

8+ years in software engineering. 5+ years in blockchain protocol development. Extensive hands-on experience in Layer 1 protocol engineering. Proven experience building and scaling decentralized exchanges (DEX). Experience designing high-value DeFi systems handling significant TVL.

-Programming Languages Solidity Move (.move) Rust JavaScript / TypeScript Python

-Blockchain Expertise Aptos Arbitrum OKX Chain Bitcoin Taproot Ethereum Layer 1 protocol architecture Layer 2 rollups and sidechains Modular blockchain design

-DEX & DeFi Expertise AMM models (Uniswap-style, Curve-style) On-chain orderbooks Liquidity pool design Yield farming mechanisms MEV protection strategies Cross-chain liquidity aggregation Tokenomics and incentive modeling Oracle integrations (Chainlink, TWAP, custom oracles)

-Security & Auditing Strong grasp of smart contract vulnerabilities and economic exploits. Experience auditing DeFi and DEX protocols. Familiarity with Slither, MythX, Foundry, Tenderly, Echidna, Certora. Formal verification experience (preferred).

-Infrastucture Node deployment and validator operations. Staking mechanisms and governance. RPC management and monitoring. DevOps experience in decentralized environments.

-Cryptography Zero-Knowledge Proof systems. Elliptic Curve Cryptography. Consensus algorithms. Secure multi-party computation (preferred).

Qualifications

Bachelor’s degree in Computer Science, Software Engineering, or related field (Master’s preferred). Prior contributions to Layer 1 blockchain protocols. Proven experience building or auditing DEX and DeFi protocols. Experience with bridging protocols (e.g., Wormhole, LayerZero). Experience with rollups, modular blockchains, and execution layers. Active participation in Web3 communities, hackathons, and research forums.