Principal Blockchain Engineer

About Moonsong Labs Moonsong Labs is a growing Web3 protocol and AI engineering services and venture studio business. We have expertise in developing software to support blockchain and AI implementations. Our venture studio incubates new businesses that are building decentralized developer infrastructure and AI protocols. Examples of our work include the project Moonbeam, a blockchain that implements an Ethereum compatible environment and natively supports cross chain use cases. And Kluster AI (https://kluster.ai/) a decentralized large AI model inference and fine tuning platform. Other customers include ZKSync and Starkware. The Protocol & Innovation Team We are looking for a Principal Blockchain Engineer who will help develop core blockchain node software, blockchain infrastructure/tooling and other low level software for various blockchain networks including for the Moonbeam Network (https://moonbeam.network/), zkSync, Starkware and Polkadot. Problem domains include cryptography, security, networking, game theory, zero knowledge, finance, political science, and programming language design. The Role The Principal Engineer is responsible for scoping, designing, and implementing web3 and blockchain solutions across a variety of technology stacks. They will work with the foundation, gathering requirements and presenting solutions in an easy to understand way. They will be responsible for providing technical inputs to proposals, driving technical designs, managing engineering teams, participating in implementation, deployment, etc. The ideal candidate has at least 5 years experience in a hands‑on software engineering lead role. Web3 experience including expert level knowledge of Blockchain Protocol Development and Ethereum is essential. Experience with systems programming, complex systems implementation, and Rust are also highly desirable. Experience leading web3 infrastructure protocol teams or engineering services teams will make for a great fit. We expect you to bring your ideas, experience, and knowledge to develop protocols for Moonsong Labs customers which include leading web3 foundations. Reach out to us if you are interested in helping to drive a multichain future, where users have scalable blockchain agnostic experiences without sacrificing decentralization. What you'll do: Work with customers and prospects to scope, understand, and document technical requirements. Drive protocol technical architecture and designs that meet requirements. Define and execute protocol implementation strategy, work closely with other team leads and stakeholders to implement and execute strategies. Manage and organize a technical team to deliver the protocol. Ensure code quality and software reliability through automated test implementations and processes. Implement and manage automated deployment and operations of protocol. Create high quality software documentation and other written assets to document and explain the system design and how the system functions. Learn and stay current with all necessary technologies. Research different ecosystems and technology stacks as needed. Communicate regularly and clearly, verbally and in written form, with other team members and also with other partners, vendors, and community members. What you'll bring: 5+ years experience in a hands‑on backend software engineering role. 2+ years blockchain protocol implementation experience using C++, Rust, or Golang. Experience leading small teams of engineers, directing both the design and managing the team's day to day activities. Strong automated testing and security experience, including working with third party audit firms. Experience working on developer tools and infrastructure protocols is highly desirable. Knowledge of L2s, ZK, EVM, CosmosSDK, and Substrate is highly desirable. Experience implementing L1 and L2 blockchains is a plus. Knowledge of Ethereum and EVM is a plus. Good writing skills with an ability to explain complex concepts in a clear and accessible way. Attention to detail while working well under pressure. Undergraduate degree required. Perks and Benefits: 100% Remote Flexible vacation policy Health and Dental plans (for US based employees) Direct line of access to Managing Partners and senior leadership; A flat organizational structure and the camaraderie of working alongside committed professionals focused on providing dedicated mentorship, respectful feedback, and career advancement Continuous learning & development 20% time to collaborate on other projects within MSL or on side projects Ready to Shape the Future? Join Us Today Equal Opportunity is the law, and at Moonsong Labs, we are ardently committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or Veteran status. If you have a specific need that requires accommodation, please let us know. #J-18808-Ljbffr