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On Call Remote Full Stack Developer Jobs in Philadelphia, PA

Horizontal Talent

Senior CMS Developer Optimizely

Bristol, PA · Remote

$112K - $147K/yr

Skills * 5+ years of full-stack web development experience. * At least 3+ years of hands-on ... Experience working in remote-first environments and collaborating across multiple locations.

Posted today

Horizontal Talent

Senior Optimizely CMS Developer

Trenton, NJ · Remote

$113K - $149K/yr

Skills * 5+ years of full-stack web development experience. * At least 3+ years of hands-on ... Experience working in remote-first environments and collaborating across multiple locations.

Posted today

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On Call Remote Full Stack Developer information

See Philadelphia, PA salary details

$24

$59

$86

How much do on call remote full stack developer jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for on call remote full stack developer in Philadelphia, PA is $59.80, according to ZipRecruiter salary data. Most workers in this role earn between $49.71 and $68.89 per hour, depending on experience, location, and employer.

What is the difference between On Call Remote Full Stack Developer vs On Call Remote Front End Developer?

AspectOn Call Remote Full Stack DeveloperOn Call Remote Front End Developer
Skills & CertificationsProficiency in both front-end and back-end technologies, certifications in full stack developmentExpertise in front-end frameworks, UI/UX design, certifications in front-end technologies
Work EnvironmentRemote, project-based, often on-call for troubleshooting or feature updatesRemote, focused on UI/UX, responsive design, and client-side development
Industry UsageUsed across tech, startups, and enterprise companies requiring full project coverageCommon in agencies, startups, and companies emphasizing user interface and experience

While both roles are remote and on-call, the Full Stack Developer handles both front-end and back-end tasks, requiring broader skills and certifications. The Front End Developer specializes in user interface and client-side development, focusing on design and responsiveness. Your choice depends on whether you need comprehensive backend skills or specialized front-end expertise.

What are popular job titles related to On Call Remote Full Stack Developer jobs in Philadelphia, PA? For On Call Remote Full Stack Developer jobs in Philadelphia, PA, the most frequently searched job titles are:
What job categories do people searching On Call Remote Full Stack Developer jobs in Philadelphia, PA look for? The top searched job categories for On Call Remote Full Stack Developer jobs in Philadelphia, PA are:
What cities near Philadelphia, PA are hiring for On Call Remote Full Stack Developer jobs? Cities near Philadelphia, PA with the most On Call Remote Full Stack Developer job openings:
On Call Remote Full Stack Developer jobs near you
Infographic showing various On Call Remote Full Stack Developer job openings in Philadelphia, PA as of August 2026, with employment types broken down into 1% Locum Tenens, 1% As Needed, 77% Full Time, 15% Part Time, and 6% Contract. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $124,382 per year, or $59.8 per hour.

Sr. Optimizely Developer

Horizontal Talent

Philadelphia, PA • Remote

$116K - $152K/yr

Full-time

Posted 5 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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