Lead Blockchain Engineer

Job Title: Lead Blockchain Engineer
Location: London
Salary/Rate:150,000-180,000
Start Date: 1/1/2025
Job Type: Permanent

We are seeking a highly skilled Lead Blockchain Engineer to join our dynamic team. In this role, you will provide technical support and expertise in multi-chain environments, ensuring smooth and efficient integration's and operations across Layer 1 and Layer 2 blockchain solutions. The ideal candidate will possess a strong foundation in smart contract execution environments, experience with continuous integration and deployment (CI/CD), and a deep understanding of various blockchains, protocol-specific integration challenges, as well as smart contract troubleshooting and auditing. You will collaborate with cross-functional teams, including security and compliance, to maintain robust and secure blockchain networks.

Key Responsibilities:

• Collaborate with development teams to design and extend cross-chain smart contract infrastructure.
• Ensure seamless integration and deployment of blockchain updates and fixes, and troubleshoot network and node issues.
• Provide technical support for multi-chain environments, including Layer 1 and Layer 2 blockchain solutions.
• Work with the development team to maintain and extend support for blockchain networks.
• Implement and adhere to security protocols and best practices, particularly around key management, multi-sig wallets, and cryptography.
• Proactively identify and resolve blockchain performance or security issues, including managing forks, hard forks, and upgrades.
• Engage with the community and relevant stakeholders to stay current on blockchain trends, new tools, and security issues.

Qualifications:

• Strong development experience with smart contract execution environments (e.g., EVMs, WASM, SVM, CKB-VM).
• Extensive experience in multi-chain environments and Layer 1/Layer 2 blockchain solutions (e.g., Ethereum, Polygon, Solana, Polkadot).
• Proficient with blockchain testing frameworks (e.g., Foundry, Hardhat).
• Hands-on experience with DevOps practices, including CI/CD pipelines, infrastructure as code (IaC), and containerisation (Docker, Kubernetes).
• Expertise in smart contract troubleshooting, auditing, and issue resolution, including gas optimisation and debugging.
• Knowledge of blockchain security best practices, including key management and encryption.
• Ability to work independently in a remote, distributed environment with minimal supervision.
• Excellent problem-solving skills, focusing on operational efficiency and performance.
• Experience with incident management and technical support, particularly in resolving blockchain-related issues.
• Solid understanding of cryptography principles (e.g., Bitcoin's light clients, secp256k1, elliptic curve cryptography).
• Hands-on development experience with the Polkadot ecosystem (Rust, Substrate).

Bonus Qualifications:

• Familiarity with blockchain infrastructure, including node setup, maintenance, and scaling.
• Knowledge of consensus mechanisms, distributed ledger technologies, and blockchain interoperability.
• Experience with hardware wallets, multi-sig wallets, and custody solutions for crypto assets.
• Prior experience working in a Web3 startup or decentralized finance (DeFi) ecosystem.

If you are interested in this opportunity, please apply now with your updated CV in Microsoft Word/PDF format.


Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.

Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement.