Senior Frontend Engineer at Halliday

Company: Halliday

Location: San Francisco, CA | New York, NY

Type: FULL_TIME

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Job Description

<h2><strong>About Halliday</strong></h2><p style="min-height:1.5em">Halliday is a blockchain company and product lab working to create a unified, cross-chain payments ecosystem. Its flagship product, Halliday Payments, is a unified payments platform that makes it easy for users to onramp, swap, and take other onchain actions. Halliday’s products are built on the Workflow Protocol, which removes the need to code smart contracts by hand and enables breakthrough applications to ship in hours, not years.</p><p style="min-height:1.5em">Backed by a16z and #Hashed, Halliday has worked with prominent developers such as ApeChain, Story Protocol and DeFi Kingdoms to provide seamless experiences for both developers and users. The team includes alumni from Stanford, Harvard, Compound, Meta, Netflix, and more.</p><div style="min-height:1.2em;margin-top:0;margin-bottom:0"> </div><h2><strong>About the role</strong></h2><p style="min-height:1.5em">We're looking for a senior-level frontend engineer with deep React and TypeScript experience to build consumer-facing crypto and payments products.</p><p style="min-height:1.5em">As a Frontend Engineer at Halliday, you'll build the user-facing products that power the future of blockchain payments. You'll design and implement intuitive, high-performance interfaces that make onchain transactions seamless for millions of users. This is an opportunity to work on cutting-edge technology with a talented team that's redefining how people interact with blockchain.</p><div style="min-height:1.2em;margin-top:0;margin-bottom:0"> </div><h2><strong>What you'll be doing</strong></h2><p style="min-height:1.5em"><strong>Build User-Facing Products</strong>: 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.</p><p style="min-height:1.5em"><strong>Develop Core Infrastructure</strong>: Build scalable components, design systems, and testing frameworks that support our payments platform and developer tools.</p><p style="min-height:1.5em"><strong>Ship Developer Tools</strong>: Contribute to Halliday's public SDKs and APIs, making it easy for developers to integrate blockchain payments into their applications.</p><p style="min-height:1.5em"><strong>Work Cross-Functionally</strong>: Collaborate with product, design, engineering, and partnerships teams to deliver features that solve real user problems and drive product adoption.</p><p style="min-height:1.5em"><strong>Drive Technical Excellence</strong>: Identify and implement improvements to enhance performance, accessibility, security, and code quality across our frontend stack.</p><p style="min-height:1.5em"><strong>Innovate on Web3 UX</strong>: Push the boundaries of what's possible in blockchain user experiences, making complex onchain actions feel simple and intuitive.</p><div style="min-height:1.2em;margin-top:0;margin-bottom:

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