Halliday · 1 day ago
Front End Engineer
San Francisco, CA
Full-time
Hybrid
Entry, Mid Level
$150K/yr - $190K/yr
2+ years expHalliday is a blockchain company and product lab focused on creating a unified payments ecosystem. As a Frontend Engineer, you will build user-facing products that enhance blockchain payment experiences and collaborate with cross-functional teams to deliver innovative features.
BlockchainFinTechWeb3
Responsibilities
Build User-Facing Products: Design and develop responsive, performant frontend applications using React and TypeScript that interact with blockchain networks, payment systems, and DeFi protocols while delivering an exceptional user experience
Develop Core Infrastructure: Build scalable components, design systems, and testing frameworks that support our payments platform and developer tools
Ship Developer Tools: Contribute to Halliday's public SDKs and APIs, making it easy for developers to integrate blockchain payments into their applications
Work Cross-Functionally: Collaborate with product, design, engineering, and partnerships teams to deliver features that solve real user problems and drive product adoption
Drive Technical Excellence: Identify and implement improvements to enhance performance, accessibility, security, and code quality across our frontend stack
Innovate on Web3 UX: Push the boundaries of what's possible in blockchain user experiences, making complex onchain actions feel simple and intuitive
Qualification
Required
2+ years of experience building production frontend applications with React and TypeScript
Strong understanding of modern frontend development including state management, API integration, responsive design, and performance optimization
You think beyond just implementing features, you understand the 'why' behind what you're building and advocate for the best user experience
You're excited to dive into new technologies, whether that's blockchain SDKs, payment APIs, or emerging web standards
You work well with cross-functional teams, communicate effectively, and thrive in a fast-paced startup environment
Based in or willing to relocate to the San Francisco Bay Area or New York City
Preferred
Previous work with blockchain technologies such as EVM-based chains, Solana, or Bitcoin
Familiarity with Web3 libraries like ethers.js, viem, or wagmi
Experience building payment flows, checkout experiences, or financial products
Comfort working across the stack when needed, including APIs and backend services
Strong eye for design and experience working closely with designers to implement pixel-perfect interfaces
Active participation in open source projects or maintenance of public libraries
Benefits
Unlimited PTO
Visa sponsorship
Company
Halliday
Halliday is a workflow protocol designed to automate workflows and manage reliability across various systems.
11-50 employees
H1B Sponsorship
Halliday 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)
2024 (1)
2023 (1)
Funding
Current Stage
Early StageTotal Funding
$26MKey Investors
a16z crypto
2025-03-18Series A· $20M
2022-08-04Seed· $6M
Leadership Team
Griffin Dunaif
Co-Founder & CEO
Recent News
Cointelegraph
2025-10-31
2025-08-30
Company data provided by crunchbase