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Frontend DevelopmentRemote

Senior Frontend Engineer at Halliday

Halliday - Startup

US, ๐Ÿ‡บ๐Ÿ‡ธ United StatesFull-time - Senior (4-7 years)0 applicantsCloses Jul 21, 2026

Salary

USD 150,000 - 250,000 / year

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Job description

Job details

  • Location: US
  • Work mode: Remote
  • Employment type: Full-time (Not an internship)
  • Salary: USD 150,000 - 250,000 per year

Role overview

Halliday is seeking a Senior Frontend Engineer to help build a unified, cross-chain payments ecosystem. You will work on the flagship Halliday Payments platform, focusing on creating seamless user experiences for onramping, swapping, and onchain actions. This is a high-impact role within a blockchain product lab backed by a16z and Hashed, leveraging the Workflow Protocol to accelerate application delivery.

Job details

This is a Full-time position based in the US. The role is Remote, allowing you to contribute to the evolution of decentralized finance from anywhere in the United States. This is a professional senior-level engineering role and is not an Internship. The salary range for this position is 150,000 USD to 250,000 USD.

Responsibilities

  • Develop and maintain the Halliday Payments unified payments platform
  • Implement complex frontend architectures for cross-chain onchain actions
  • Collaborate with product designers to create intuitive user interfaces
  • Optimize application performance for high-traffic blockchain interactions
  • Integrate frontend components with the Workflow Protocol for rapid shipping
  • Mentor junior engineers and conduct thorough code reviews

Requirements

  • Proven experience as a Senior Frontend Engineer with a strong portfolio
  • Expertise in modern JavaScript frameworks, specifically React and TypeScript
  • Experience building interfaces for Web3 or blockchain-based applications
  • Deep understanding of state management and asynchronous data handling
  • Ability to work independently in a fast-paced, remote startup environment
  • Strong communication skills for collaborating across cross-functional teams

Benefits

  • Competitive salary ranging from 150,000 to 250,000 USD
  • Opportunity to work with top-tier investors like a16z and Hashed
  • Remote-first work environment providing high flexibility
  • Direct impact on the future of cross-chain payment ecosystems

Keywords

ReactTypeScriptBlockchainWeb3Frontend EngineeringCross-chain PaymentsUI/UXJavaScript