D3 · 2 hours ago
Sr. Fullstack Engineer
USA and Global (Hybrid)
Full-time
Hybrid
Senior Level
5+ years expD3 is building the world’s first purpose-built blockchain for DomainFi, revolutionizing how domain names are owned and traded. They are seeking a highly skilled Senior Fullstack Engineer to design, develop, and optimize frontend and backend components for user-facing applications, including decentralized applications and domain marketplaces.
Domain RegistrarInformation TechnologySoftwareWeb3
Responsibilities
Collaborate with the product team to translate requirements into technical specifications and user-facing features
Develop and maintain frontend components of the domain registrar and marketplace using Next.js, Typescript, React, GraphQL, HTML, and CSS
Design and implement dApps that seamlessly integrate Web2 and Web3 APIs
Build pixel-perfect UI from wireframes and high-fidelity mocks with attention to detail
Contribute to open-source SDKs enabling developers to integrate Doma Protocol into their apps
Write and maintain unit, integration, and E2E tests
Ensure accessibility (WCAG), SEO, web performance best practices, scalability, and security
Design, implement, and maintain backend services to support registrar features, domain tokenization, and Web2/Web3 marketplaces
Build robust systems for payment processing, integrating fiat and crypto gateways
Develop backend systems supporting event-driven architectures and asynchronous processing with Kafka, RabbitMQ, or similar tools
Write scalable APIs, ensuring code quality through reviews, testing, and debugging
Maintain and optimize existing services for performance and reliability
Stay up to date with best practices and emerging technologies in web and blockchain development
Qualification
Required
Bachelor's degree in Computer Science, Software Engineering, or related field (advanced coursework and certifications are a plus)
5+ years frontend development (React, Vue, or Angular)
5+ years backend development (Node.js with MySQL/Postgres)
Experience building highly scalable, distributed production systems
CSS frameworks (Tailwind, Bootstrap) and responsive design
Mobile-first design principles and optimization for small screens
Web3 libraries (web3.js, ethers.js, wagmi)
Event-driven architecture and asynchronous processing
Experience with APIs, microservices, and distributed systems
Basic understanding of blockchain architecture and smart contract interaction
Strong problem-solving, adaptability, and self-motivation
Familiarity with Git, Agile methodologies, and CI/CD practices
Excellent communication and teamwork skills
Preferred
Smart contract development (Solidity)
Experience with React Native or mobile development
Familiarity with EPP (Extensible Provisioning Protocol) in domain systems
Experience with NestJS, GraphQL
DevOps experience (Kubernetes, AWS, GCP, DigitalOcean, Linux)
Accessibility design knowledge
Company
D3
D3 is a domainFi network that connects Web3 ecosystems with users on the root layer of the internet.
11-50 employees
H1B Sponsorship
D3 has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (1)
2022 (3)
Funding
Current Stage
Early StageTotal Funding
$30MKey Investors
ParadigmShima Capital
2025-01-29Series A· $25M
2023-09-05Seed· $5M
Leadership Team
Fred Hsu
Co-Founder and CEO
Recent News
2025-12-11
2025-10-05
Company data provided by crunchbase