The Best Senior Front-end Js Engineers to Hire in 2025

Hire senior front-end js engineers in 24 hours or less. Get matched with in-demand, freelance and full-time talent for just $99/mo.
Our trusted network of senior front-end js engineers have worked with these clients
The Hero
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Anonymous
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Public
Lead Front-end Developer
AMER
Location
$120,000
Salary
$58/hr
Hourly Rate
92%
Approval Rating
Expert in modern JavaScript frameworks with a passion for creating seamless user experiences.
Test Objectives Definition
The Tempter
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Anonymous
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Public
Senior Front-end Engineer
APAC
Location
$125,000
Salary
$60/hr
Hourly Rate
88%
Approval Rating
Experience in agile methodologies and modern JavaScript practices, delivering high-quality applications.
User Acceptance Criteria Writing
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Our best senior front-end js engineers
The Star
Senior UI Engineer
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Anonymous
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Public
EMEA
Location
$115,000
Salary
$55/hr
Hourly Rate
89%
Approval Rating
Skilled in design systems and component-based architecture, she specializes in responsive web design.
Featured Skills
Test Plans Creation
The Villain
JavaScript Architect
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Anonymous
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Public
APAC
Location
$140,000
Salary
$67/hr
Hourly Rate
87%
Approval Rating
A seasoned architect focusing on scalable JavaScript applications and performance optimization.
Featured Skills
Testing Types Identification
The Hero
Lead Front-end Developer
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Anonymous
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Public
AMER
Location
$120,000
Salary
$58/hr
Hourly Rate
92%
Approval Rating
Expert in modern JavaScript frameworks with a passion for creating seamless user experiences.
Featured Skills
Test Objectives Definition
The Visionary
Front-end Web Developer
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Anonymous
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Public
AMER
Location
$95,000
Salary
$46/hr
Hourly Rate
86%
Approval Rating
Brings innovative solutions to the table, blending technology and user-centric design.
Featured Skills
Test Scripts Creation
The Performer
JavaScript Developer
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Anonymous
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Public
AMER
Location
$85,000
Salary
$41/hr
Hourly Rate
90%
Approval Rating
Focused on interactive features, Nini excels in user interface design and development.
Featured Skills
Test Cases Development
The Antagonist
JavaScript Consultant
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Anonymous
open-eye-icon
Public
EMEA
Location
$130,000
Salary
$62/hr
Hourly Rate
91%
Approval Rating
Offers strategic consulting for complex front-end projects, with a focus on best practices.
Featured Skills
Test Data Generation
The Tempter
Senior Front-end Engineer
eyelashes-closed-icon
Anonymous
open-eye-icon
Public
APAC
Location
$125,000
Salary
$60/hr
Hourly Rate
88%
Approval Rating
Experience in agile methodologies and modern JavaScript practices, delivering high-quality applications.
Featured Skills
User Acceptance Criteria Writing
The Artist
Front-end Craftsperson
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Anonymous
open-eye-icon
Public
EMEA
Location
$100,000
Salary
$48/hr
Hourly Rate
95%
Approval Rating
Brings creativity to front-end development with a strong background in animations and transitions.
Featured Skills
Testing Tools Selection
The Associate
Junior Front-end Developer
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Anonymous
open-eye-icon
Public
APAC
Location
$70,000
Salary
$34/hr
Hourly Rate
93%
Approval Rating
Early-career developer with a keen interest in JavaScript and web technologies.
Featured Skills
Test Results Documentation
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Common jobs to be done for senior front-end js engineers

<h3 class="uui-heading-subheading">User Interface Development</h3><div class="jtbd-card"><div class="jtbd-card-single">Building reusable UI components with React/Vue.js frameworks.</div><div class="jtbd-card-single">Implementing responsive layouts using CSS Flexbox and Grid.</div><div class="jtbd-card-single">Creating accessible front-end interfaces following WCAG guidelines.</div><div class="jtbd-card-single">Integrating design systems into existing workflows for consistency.</div></div><h3 class="uui-heading-subheading">Performance Optimization</h3><div class="jtbd-card"><div class="jtbd-card-single">Conducting performance audits using Lighthouse and optimizing assets.</div><div class="jtbd-card-single">Implementing lazy loading for images and components to improve load times.</div><div class="jtbd-card-single">Minifying JavaScript and CSS files for faster resource delivery.</div><div class="jtbd-card-single">Monitoring application performance with tools like New Relic or Sentry.</div></div><h3 class="uui-heading-subheading">Testing and Debugging</h3><div class="jtbd-card"><div class="jtbd-card-single">Writing unit tests using Jest or Mocha for component reliability.</div><div class="jtbd-card-single">Implementing end-to-end tests with Cypress or Selenium.</div><div class="jtbd-card-single">Debugging cross-browser issues with Developer Tools in different browsers.</div><div class="jtbd-card-single">Conducting A/B testing to assess UI changes impact on user engagement.</div></div><h3 class="uui-heading-subheading">Development Collaboration</h3><div class="jtbd-card"><div class="jtbd-card-single">Collaborating with UX/UI designers to refine product interfaces.</div><div class="jtbd-card-single">Participating in Agile/Scrum meetings to discuss project updates.</div><div class="jtbd-card-single">Using Git for version control and code review workflows.</div><div class="jtbd-card-single">Documenting front-end architecture and component libraries for team alignment.</div></div>

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