Founding Front-End Engineer: Build Scalable UI & Libraries

Jobtailor; California (MO); On-site; USD 90,000 - 140,000; Full time

Job summary

Jobtailor is seeking an experienced Front-end Engineer to design and build scalable, high-performance web applications. You will create intuitive UI/UX, optimize performance and accessibility, and collaborate with designers, backend engineers, and founders on vision and execution.

You will develop reusable component libraries, implement RESTful API and GraphQL integrations, and define front-end best practices, testing, and code quality in a fast-moving startup environment.

Qualifications

• 3+ years of front-end development experience with a strong track record of shipping user-facing products.
• Expertise in modern JavaScript frameworks, including React, Vue.js, Angular, or Svelte.
• Strong proficiency in HTML, CSS, TypeScript, and JavaScript (ES6+)
• Experience integrating RESTful APIs, GraphQL, and WebSockets.
• Knowledge of state management libraries such as Redux, Zustand, Recoil, or Vuex.
• Familiarity with server-side rendering using Next.js or Nuxt.js and static site generation.
• Strong understanding of web performance optimization, accessibility (a11y), and security best practices.
• Proficiency with Git, CI/CD workflows, and front-end testing frameworks such as Jest, Cypress, or Playwright.
• Experience in early-stage startup environments or small, fast-moving teams is a plus.

Responsibilities

• Design and develop scalable, high-performance front-end applications
• Build intuitive, responsive, and visually engaging UI/UX experiences
• Optimize front-end performance, accessibility, and responsiveness
• Collaborate with product designers, backend engineers, and founders on vision and execution
• Develop component libraries and reusable front-end architecture
• Implement and maintain state management, API integrations, and client-side logic
• Define best practices for front-end development, code quality, and UI testing
• SignalFire reviews applications on an ongoing basis and may connect matched candidates with talent partners or startup leaders

Skills

Front-end development

React

Vue.js

Angular

Svelte

HTML

CSS

TypeScript

JavaScript (ES6+)

State management

RESTful APIs

GraphQL

WebSockets

Tools

Git

CI/CD

Jest

Cypress

Playwright

Next.js

Nuxt.js

Job description

Jobtailor is seeking an experienced Front-end Engineer to design and build scalable, high-performance web applications. You will create intuitive UI/UX, optimize performance and accessibility, and collaborate with designers, backend engineers, and founders on vision and execution.

You will develop reusable component libraries, implement RESTful API and GraphQL integrations, and define front-end best practices, testing, and code quality in a fast-moving startup environment.