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Senior Facebook Front End Developer Jobs in Colorado

Horizontal Talent

Senior CMS Developer Optimizely

Aurora, CO · Remote

$117K - $154K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Horizontal Talent

Senior Optimizely CMS Developer

Golden, CO · Remote

$118K - $155K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Horizontal Talent

Senior CMS Developer Optimizely

Arvada, CO · Remote

$116K - $153K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Horizontal Talent

Senior Optimizely CMS Developer

Welby, CO · Remote

$118K - $155K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Horizontal Talent

Senior CMS Developer Optimizely

Denver, CO · Remote

$116K - $152K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

Horizontal Talent

Senior Optimizely CMS Developer

Denver, CO · Remote

$116K - $152K/yr

This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS ... Partner on server-side testing and feature flagging when frontend testing is not the best fit.

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Senior Facebook Front End Developer information

What does a senior Facebook front end developer do?

A Senior Facebook Front End Developer is responsible for designing, developing, and optimizing user interfaces for Facebook’s web and mobile applications. They work closely with designers, product managers, and backend engineers to create seamless and responsive user experiences. Their role includes writing high-quality code, leading technical discussions, mentoring junior developers, and ensuring that front-end solutions are scalable and performant. They also stay updated with the latest web technologies and best practices to maintain Facebook’s high standards.

How does a senior Facebook front end developer typically collaborate with back-end teams to deliver seamless user experiences?

As a Senior Facebook Front End Developer, close collaboration with back-end teams is essential for building scalable and responsive applications. You’ll frequently participate in cross-functional meetings, define API requirements, and coordinate on data flow and performance optimizations. Effective communication skills are crucial, as you’ll translate design and product requirements into technical specifications, ensuring front-end components integrate smoothly with backend systems. This collaborative approach helps resolve challenges quickly and leads to more cohesive and efficient product development.

What are the key skills and qualifications needed to thrive as a senior Facebook front end developer, and why are they important?

To thrive as a Senior Facebook Front End Developer, you need advanced proficiency in JavaScript, React.js, HTML/CSS, and a strong foundation in computer science, often supported by a relevant degree and years of experience. Expertise with development tools like Git, testing frameworks, and Facebook’s internal systems such as Relay and GraphQL is often required. Exceptional problem-solving, collaboration, and communication skills help you deliver scalable solutions and mentor junior developers. These skills ensure you can build high-quality, performant user interfaces at scale while driving innovation within dynamic engineering teams.
Senior Facebook Front End Developer jobs near you
Infographic showing various Senior Facebook Front End Developer job openings in Colorado as of July 2026, with employment types broken down into 83% Full Time, 7% Part Time, 1% Temporary, and 9% Contract. Highlights an 80% Physical, 4% Hybrid, and 16% Remote job distribution.

Senior CMS Developer Optimizely

Horizontal Talent

Greenwood Village, CO • Remote

$113K - $149K/yr

Full-time

Posted 25 days ago

Job description

Join a fast-moving digital marketing team that is investing heavily in modern web technology, experimentation, and data-driven growth. This Senior Optimizely Developer role is a great fit for someone who enjoys building scalable CMS solutions, launching sophisticated experiments, and using AI-assisted tools to work faster and smarter.

Responsibilities
  • Build and maintain reusable components, page templates, and content models within Optimizely CMS to help marketing teams launch web pages efficiently.
  • Design CMS architecture that supports scalability, security, and strong performance, including Core Web Vitals optimization.
  • Develop and support integrations between Optimizely CMS and enterprise platforms such as Salesforce, Marketo, Adobe Commerce, and internal systems.
  • Create and deploy advanced A/B, split, and multivariate tests in Optimizely Web Experimentation, including custom DOM manipulation and dynamic content changes.
  • Implement personalized web experiences for targeted B2B audiences and account-based marketing campaigns.
  • Partner on server-side testing and feature flagging when frontend testing is not the best fit.
  • Perform thorough cross-browser and cross-device testing to help ensure smooth, consistent user experiences with minimal flicker or layout shift.
  • Define and document best practices, technical standards, and governance guidelines for Optimizely-related work.
  • Collaborate closely with CRO, product, and design teams to evaluate ideas, prototype solutions, and translate designs into polished digital experiences.
  • Use AI-assisted development tools to accelerate coding, debugging, testing, and experimentation workflows.
Skills
  • 5+ years of full-stack web development experience.
  • At least 3+ years of hands-on experience working within the Optimizely ecosystem.
  • Strong backend development skills with C# and .NET Core/MVC, especially in Optimizely CMS environments.
  • Advanced frontend experience with HTML5, CSS3/SASS, and JavaScript, including Vanilla JS, ES6+, jQuery, React, or Vue.
  • Deep understanding of Optimizely platform concepts such as Project JS, visual tags, audience targeting, anti-flicker approaches, and caching behavior.
  • Experience building for complex B2B websites, including lead generation and gated content workflows.
  • Strong Git knowledge and familiarity with modern CI/CD workflows such as Azure DevOps or GitHub Actions.
  • Ability to work independently while also partnering effectively with cross-functional teams.
  • A proactive, solution-oriented mindset with a focus on speed, quality, and continuous improvement.
Preferred Skills
  • Active Optimizely Developer certification in CMS or Web Experimentation.
  • Experience supporting server-side experimentation and feature flagging initiatives.
  • Familiarity with UX/UI collaboration and translating wireframes or Figma designs into interactive experiences.
  • Comfort using AI tools such as GitHub Copilot or ChatGPT to support development efficiency.
  • Experience working in remote-first environments and collaborating across multiple locations.

Horizontal is committed to fostering an inclusive environment where all qualified candidates can thrive. We value diversity, equity, and inclusion as essential to building strong teams, better ideas, and better outcomes.

By applying for this position, you acknowledge and agree that Horizontal Talent may contact you regarding your application using automated technology, including phone calls, SMS/text messages, or email, which may be delivered by our virtual AI recruiter, Alex.

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