Front End Engineer jobs in United States
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Halliday · 2 months ago

Front End Engineer

positionSan Francisco, CA | New York, NY
timeFull-time
remoteOnsite
seniorityMid Level
money$150K/yr - $190K/yr

Halliday is a blockchain company focused on creating a unified cross-chain payments ecosystem. The Frontend Engineer will be responsible for designing and building high-performance front-end interfaces that interact with blockchain networks and contribute to the development of SDKs and scalable services.

BlockchainFinTechWeb3
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H1B Sponsorednote

Responsibilities

Design and develop intuitive, high-performance front-end interfaces that seamlessly interact with blockchain networks, cryptographic systems, DeFi protocols, and zero-knowledge proofs, ensuring a secure and engaging user experience
Develop scalable services, APIs, and robust testing frameworks to support our platform
Utilize open-source blockchain SDKs to interact with various networks, protocols, and smart contracts
Contribute to the development and refinement of Halliday’s public SDKs, making it easy for developers to integrate with our services
Collaborate with cross-functional teams, including design, product, engineering, and business to build impactful solutions that advance the web3 ecosystem
Innovate and expand on our foundational cross-chain protocol
Continuously identify and implement improvements to enhance our platform's performance, security, and scalability

Qualification

Frontend developmentBlockchain technologiesAPIs developmentSmart contractsCryptographyDecentralized applicationsQuick learnerProblem-solving skillsCollaborative mindset

Required

Experience as a frontend engineer, demonstrated through impactful projects such as developing scalable applications, building robust APIs, or contributing to widely-used libraries and frameworks
A quick learner with a passion for exploring new technologies and creating innovative solutions
A collaborative mindset and excellent problem-solving skills
Located in or willing to relocate to the San Francisco Bay Area or New York City

Preferred

Experience working with blockchain technologies, including EVM-based chains, Bitcoin, and/or Solana
Solid understanding of blockchain concepts, including smart contracts, cryptography, and decentralized applications
Familiarity with modern web services, cloud infrastructure, containerization, and deployment pipelines

Benefits

Unlimited PTO
Visa sponsorship

Company

Halliday

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Halliday is a workflow protocol designed to automate workflows and manage reliability across various systems.
dateFounded in 2022
location
San Francisco, California, USA
people-size11-50 employees
web-link
https://www.halliday.xyz/

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 Stage
Total Funding
$26M
Key Investors
a16z crypto
2025-03-18Series A· $20M
2022-08-04Seed· $6M

Leadership Team

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Griffin Dunaif
Co-Founder & CEO
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Recent News

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Gyges Labs Completes New Round of Financing for World's First All-Day Wearable Invisible Display AI Glasses | Exclusive Report by Yingke
2025-11-19
Cointelegraph
Halliday integrates TRON Network, delivering seamless on-ramp payments across the ecosystem
2025-10-31
TechAcute
Chinese Startup Enters Crowded Smart Glasses Market with AI Learning Focus
2025-08-30
Company data provided by crunchbase