# Front End Engineer

**Company:** [Halliday](https://hotfix.jobs/companies/halliday)
**Location:** New York, NY
**Role:** Frontend Engineering
**Salary:** $150k – $190k/yr
**Experience:** 2+ years
**Skills:** React, TypeScript, JavaScript, Web3, Ethers.Js, Viem, Wagmi, Solana, Evm, State Management, Responsive Design, API Integrations, Performance Optimization, Blockchain Sdks, Defi Protocols
**Posted:** 2025-10-17

> Builds responsive, high-performance frontend applications using React and TypeScript for blockchain payments platform, integrating with DeFi protocols and Web3 libraries. Requires 2+ years experience, strong UX focus, and collaborative mindset in fast-paced startup.

## Job Description

## What you'll be doing

- 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.

## What we’re looking for

**Frontend Expertise**: 2+ years of experience building production frontend applications with **React** and **TypeScript**. You write clean, maintainable code and care deeply about user experience.
**Technical Proficiency**: Strong understanding of modern frontend development including state management, API integration, responsive design, and performance optimization.
**Product Mindset**: You think beyond just implementing features, you understand the \"why\" behind what you're building and advocate for the best user experience.
**Fast Learner**: You're excited to dive into new technologies, whether that's blockchain SDKs, payment APIs, or emerging web standards.
**Collaborative Spirit**: You work well with cross-functional teams, communicate effectively, and thrive in a fast-paced startup environment.

## Nice to haves

- **Blockchain Experience**: Previous work with blockchain technologies such as EVM-based chains, **Solana**, or **Bitcoin**. Familiarity with Web3 libraries like **ethers.js**, **viem**, or **wagmi**.
- **Payments Background**: Experience building payment flows, checkout experiences, or financial products.
- **Full-Stack Capabilities**: Comfort working across the stack when needed, including APIs and backend services.
- **Design Sensibility**: Strong eye for design and experience working closely with designers to implement pixel-perfect interfaces.
- **Open Source Contributions**: Active participation in open source projects or maintenance of public libraries.

## Compensation

The base salary range for this role is **$150,000 - $190,000**. This reflects the minimum and maximum range across all US locations. This does not include equity or benefits.

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**Apply:** https://hotfix.jobs/jobs/d7fcda66-bc47-4acc-849f-322b27449522
**Canonical:** https://hotfix.jobs/jobs/d7fcda66-bc47-4acc-849f-322b27449522