Principal Blockchain Engineer
Principal Blockchain Engineer

Principal Blockchain Engineer

London Full-Time 48000 - 84000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Lead the development of blockchain solutions and manage engineering teams.
  • Company: Moonsong Labs is a cutting-edge Web3 protocol and AI venture studio.
  • Benefits: Enjoy 100% remote work, flexible vacation, and health plans for US employees.
  • Why this job: Join a team shaping a multichain future with innovative blockchain technology.
  • Qualifications: 5+ years in backend software engineering and blockchain protocol experience required.
  • Other info: Collaborate on exciting projects and enjoy a flat organisational structure.

The predicted salary is between 48000 - 84000 £ per year.

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 ( ) 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 ( ), 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.

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Principal Blockchain Engineer employer: Web3 Foundation

At Moonsong Labs, we pride ourselves on being an exceptional employer, offering a fully remote work environment that promotes flexibility and work-life balance. Our flat organisational structure fosters open communication with senior leadership, ensuring that every team member has direct access to mentorship and career advancement opportunities. With a strong focus on continuous learning and the chance to collaborate on innovative projects, we empower our employees to shape the future of blockchain and AI technology in a supportive and dynamic culture.
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Contact Detail:

Web3 Foundation Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Blockchain Engineer

✨Tip Number 1

Familiarise yourself with the specific blockchain technologies mentioned in the job description, such as Ethereum, zkSync, and Polkadot. Understanding these platforms will not only help you during interviews but also demonstrate your genuine interest in the role.

✨Tip Number 2

Engage with the blockchain community by participating in forums, attending meetups, or contributing to open-source projects. This will help you build a network and gain insights into current trends and challenges in the blockchain space, which can be valuable during discussions with Moonsong Labs.

✨Tip Number 3

Prepare to discuss your previous experience leading engineering teams and managing complex projects. Be ready to share specific examples of how you've driven technical designs and implemented solutions, as this aligns closely with the responsibilities of the Principal Blockchain Engineer role.

✨Tip Number 4

Stay updated on the latest developments in Web3 and blockchain protocols. Being knowledgeable about emerging technologies and trends will not only impress the hiring team but also show that you're committed to continuous learning, which is highly valued at Moonsong Labs.

We think you need these skills to ace Principal Blockchain Engineer

Blockchain Protocol Development
Expertise in Ethereum
Systems Programming
Complex Systems Implementation
Proficiency in Rust, C++, or Golang
Team Leadership
Automated Testing
Security Best Practices
Developer Tools and Infrastructure Protocols
Knowledge of L2s, ZK, EVM, CosmosSDK, and Substrate
Implementation of L1 and L2 Blockchains
Technical Documentation Skills
Attention to Detail
Effective Communication Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in blockchain protocol development, particularly with technologies like C++, Rust, or Golang. Emphasise any leadership roles you've held and your experience with automated testing and security.

Craft a Compelling Cover Letter: In your cover letter, express your passion for Web3 and blockchain technology. Discuss specific projects you've worked on that align with Moonsong Labs' focus areas, such as decentralized infrastructure or AI protocols.

Showcase Your Communication Skills: Since the role requires clear communication of complex concepts, include examples in your application where you've successfully explained technical details to non-technical stakeholders or created high-quality documentation.

Highlight Continuous Learning: Mention any recent courses, certifications, or self-study you've undertaken to stay current with blockchain technologies. This shows your commitment to professional growth and aligns with Moonsong Labs' emphasis on continuous learning.

How to prepare for a job interview at Web3 Foundation

✨Showcase Your Technical Expertise

As a Principal Blockchain Engineer, it's crucial to demonstrate your deep understanding of blockchain protocols and systems programming. Be prepared to discuss your previous projects, particularly those involving Ethereum, Rust, or Golang, and how they relate to the role.

✨Communicate Clearly

Effective communication is key in this role. Practice explaining complex technical concepts in simple terms, as you'll need to present solutions to both technical and non-technical stakeholders. This will show your ability to bridge the gap between engineering and business needs.

✨Prepare for Problem-Solving Scenarios

Expect to face technical challenges during the interview. Prepare by reviewing common problems in blockchain development, such as security vulnerabilities or scalability issues, and think through how you would approach solving them. This will highlight your problem-solving skills and innovative thinking.

✨Demonstrate Leadership Experience

Since the role involves managing teams and driving technical designs, be ready to share examples of your leadership experience. Discuss how you've directed engineering teams, managed day-to-day activities, and ensured high-quality outputs in past roles.

Principal Blockchain Engineer
Web3 Foundation

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