D3 is hiring a

Principal Blockchain Engineer

About D3

D3 is building the world’s first purpose-built blockchain for DomainFi—bringing domain tokenization and DeFi primitives to a massive, rapidly growing $350B+ real-world asset class. We’re revolutionizing how existing and future domain names are owned, traded, and leveraged in the digital economy.

Our elite team is stacked with industry veterans who have spent the last three decades shaping the internet, from pioneering domain name monetization to architecting key internet protocols to launching and running major TLDs like .xyz, .inc, .tv, and .link. With a proven track record of innovation and success, we’re now redefining what’s possible in the domain space.

We recently closed a $25M Series A led by Paradigm - one of the best investors in the industry. This will help fuel our mission to bring domains fully on-chain and unlock new financial possibilities for one of the internet’s most valuable asset classes.

We’re based in Los Angeles, with team members all over the world. We’re looking for driven, talented builders to help build a trillion-dollar DomainFi economy. Join us!

Position Overview

This is a hybrid role in San Francisco or Los Angeles that offers extraordinary creative freedom and ownership in revolutionizing how domains become financialized assets. As a Principal Blockchain Engineer, you'll be at the heart of this effort. You'll architect and implement the core systems that power the D3 Protocol DOMA, designing robust APIs and smart contracts that integrate seamlessly across multiple L1s and L2s. This is a hands-on, high-impact roles where your work will directly influence the future of digital identity and interoperability online.

We're looking for a seasoned engineer who's fluent in both backend infrastructure and smart contract development. If you're well-versed in standards like ERC-721, ERC-1155, and ERC-20—and excited about building foundational infrastructure for the decentralized web—this is your opportunity to lead from the front.

Core Responsibilities

• Collaborate with the product team to understand requirements and translate them into technical specifications and features.
• Lead the research, design, implementation, deployment and monitoring of the D3 Protocol that enables tokenization of domains as Real World Assets (RWAs) onto the blockchain.
• Research, implement and maintain smart contracts to enable “DomainFi” applications across multiple L1/L2 blockchains. This includes tokenization, name resolution, secondary trading, and lending/borrowing.
• Implement backend services to interface with blockchain and traditional DNS Registry/Registrar infrastructure.
• Ensure the scalability, performance, and security of the protocol and application.
• Ensure code quality through code reviews, testing, and debugging.
• Maintain and optimize the performance of existing codebase and address any bugs or issues that arise.
• Stay up-to-date with the latest technologies, frameworks, and best practices in web development, blockchain, and smart contract development.
  
  

Required Qualifications

• Strong passion for Blockchain technologies and protocols.
• Extensive knowledge and experience in multiple blockchain ecosystems including L1 / L2 chain architectures, smart contract development and deployment, blockchain bridges, oracles, indexers, decentralized finance, and NFT marketplaces.
• Bachelor's degree in computer science, software engineering, or a related field. Relevant certifications and additional coursework are a plus.
• Minimum 5 years of professional experience in backend development using Node.js and MySQL/Postgres.
• Minimum 3 years experience in blockchain development using Solidity/Rust, with strong understanding of distributed systems, consensus algorithms and storage subsystems.
• Familiarity with Git version control and Agile methodologies for collaborative development.
• Strong problem-solving skills, adaptability, and a self-motivated attitude, with a willingness to learn new technologies in a fast-paced startup environment.
• Excellent communication and collaboration skills, with the ability to work effectively both independently and within cross-functional teams to achieve business goals.
  
  

Pluses:

• DevOps experience with Kubernetes, Digital Ocean, Google Cloud, AWS, and Linux environments.
• Familiarity with NestJS and GraphQL.
• Have prior experience maintaining or creating blockchain oracles.
  
  

Why D3, Why Now?

Ground-Floor Growth, Learning, and Impact: D3 is your chance to dive headfirst into an ultra-early-stage company where every move you make truly matters. You’ll have the opportunity to sharpen your skills, expand your expertise, and shape the foundation of something groundbreaking. Almost everything we’re building today at D3 is “zero-to-one,” meaning you’ll be among the first to craft, refine, and launch key initiatives that define our future success.

Strong, Proven Leadership: At D3, you’ll work alongside industry visionaries who have been there, done that, and are ready to do it again—only bigger. Our leadership team brings veteran industry experience, sharp insights, and a relentless drive to do big things across every function at D3. You’ll gain invaluable mentorship, develop a high-impact mindset, and be challenged to grow in ways you never imagined.

Unique Market Positioning – We’re pioneering at the intersection of internet infrastructure, real-world assets, and blockchain communities, creating solutions that redefine what’s possible in Web3. If you want to push boundaries, solve complex problems, and be part of a team that’s shaping the future of the Internet, D3 is the place to do it.

Apply Now: