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Information Technology 🏢 Full Time ⭐️ Verified

Senior Web3 Smart Contract Engineer

Quantum Nexus
San Francisco
Estimated Salary
USD 160.000 – USD 220.000
Live Update
30 Juni 2026
Deadline
30 Jun 2027

Job Description

Are you ready to architect the infrastructure of tomorrow? Quantum Nexus is seeking a visionary Senior Web3 Smart Contract Engineer to lead the development of next-generation decentralized applications. We are pioneers in the blockchain space, building scalable solutions that redefine digital ownership and interoperability. Join a team of world-class engineers and designers committed to pushing the boundaries of what is possible in the Web3 ecosystem.

In this role, you won't just write code; you will shape the future of finance, identity, and digital assets. You will be responsible for the entire lifecycle of our smart contracts, from initial design and audit to deployment and optimization. If you have a deep understanding of cryptographic protocols and a passion for building secure, user-centric dApps, we want to hear from you.

Responsibilities

  • Design, develop, and audit complex smart contracts using Solidity and Rust for high-security decentralized protocols.
  • Optimize gas usage and improve transaction throughput for Layer 2 and Layer 3 scaling solutions.
  • Collaborate with frontend engineers and product managers to integrate Web3 wallets and blockchain data feeds into consumer-facing applications.
  • Implement rigorous security best practices and conduct thorough code reviews to mitigate vulnerabilities.
  • Mentor junior developers and contribute to the technical roadmap for our ecosystem expansion.
  • Participate in community governance and drive technical discussions within the broader Web3 industry.

Qualifications

  • 5+ years of professional software engineering experience with at least 2 years specifically in blockchain development.
  • Deep expertise in Solidity, Rust, or Vyper, with a proven track record of deploying audited contracts on Ethereum or alternative EVM chains.
  • Strong understanding of cryptographic principles, consensus mechanisms, and decentralized architecture.
  • Experience with development tools such as Hardhat, Truffle, Foundry, and Git.
  • Familiarity with TypeScript, React, and web3.js/Ethers.js for frontend integration.
  • Excellent problem-solving skills and the ability to thrive in a fast-paced, agile environment.

Required Skills

Solidity Rust Web3 Ethereum Smart Contracts Blockchain Go Security Audits Gas Optimization TypeScript React

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