responsibilities of this role include advanced web application development and collaborating closely with a team of highly skilled developers, technical leads and product owners in a fast paced Agile environment. You wil…
Engineering & IT · Philadelphia, PA
Frontend Developer jobs in Philadelphia, PA
Frontend developers build the interfaces people actually see and use, turning designs into fast, accessible web experiences with HTML, CSS, JavaScript, and frameworks like React.
343
Open roles today
$34–$93/hr
Typical pay range
$124k
Median, full-time
10
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Open frontend developer roles
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Title:Lead Project EngineerKBR Sustainable Technology Solutions (STS) provides holistic and value-added solutions across the entire asset life cycle. These include world-class licensed process technologies, differentiate…
throughout North America to serve the contract requirements and respond to client needs. The successful candidate will have experience in developing technical specifications, criteria, drawings and calculations for AC an…
$142.9k - $190.1k
The application window is expected to close on: 10/29/2026The successful applicant will be performing work on US Government classified environments, and therefore, must be a U.S. Person (i.e., U.S. citizen, U.S. national…
$86.6k - $144.4k
Are you an experienced full stack developer (React Node) looking to work on our cutting-edge frontends for a healthcare mission driven organization?Are you a collaborative Sr Software Engineer with an automation mindset…
$97k - $143k
proposal presentation, reverse engineering, analysis, report writing, planning and managing of component testing. The Lead Engineer will develop, maintain and promote constructive and favorable relationships with current…
behavior and marketing results to uncover trends, explain performance shifts, and translate findings into practical recommendations.• Develop meaningful measurement frameworks and introduce new KPIs that improve how onli…
improve productivity and decision-making.Role-Specific Responsibilities:Design enterprise AI prompts and conversational experiences. Develop and maintain Atlassian Rovo Agents.Build AI-powered knowledge assistants and wo…
SQL - Application Development Analyst IV (Contract)Contract - Potential for Extension or ConversionLocation: Philadelphia, PA (Remote EST)Pay: Available on W2OverviewWe are seeking a SQL Application Analyst to support an…
$110.7k - $218.3k
process, please direct your inquiries to the Global Call Center (GCC) at ****@*****.***. Recruiting tips From developing a stand out resume to putting your best foot forward in the interview, we want you to feel prepared…
Primary Responsibilities Design, develop, test, and maintain scalable software applications, APIs, and services. Use AI tools for code generation, debugging, testing, refactoring, and documentation. Review and validate A…
including VLANs and port channels. Support Windows and Linux server administration across physical and virtual environments. Develop, implement, maintain, and regularly test disaster recovery and business continuity proc…
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What frontend developers earn in Philadelphia
Hourly first — that's how the offer arrives
| Experience | Hourly | Annual, full-time |
|---|---|---|
| Entry level | $34–$50 | $70k–$103k |
| Mid level | $50–$70 | $103k–$146k |
| Senior | $67–$93 | $140k–$194k |
Adjusted for the Philadelphia market from national ranges.
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What employers ask for
The skills these listings keep naming
JavaScript and TypeScriptReact, Vue, or AngularHTML and semantic markupCSS and responsive layoutAccessibility (WCAG)Performance optimizationREST and GraphQL APIsTesting (Jest, Playwright)Working with designers
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Interview questions worth rehearsing
With the thing the interviewer is actually listening for
What happens between typing a URL and the page rendering?
Cover DNS, the request, HTML parsing, and the render pipeline at a comfortable level of detail. Depth on the rendering side is where frontend candidates stand out.
How do you make a page fast?
Talk about measuring first — Core Web Vitals, profiling — then levers like code splitting, image optimization, and caching. Tie it to a real page you improved.
How do you approach accessibility in your work?
Go beyond alt text: keyboard navigation, focus management, semantic HTML, and testing with a screen reader. Concrete habits are convincing.
Explain how you would manage state in a growing React application.
Show that you match the tool to the problem — local state, context, or a store — rather than defaulting to one library for everything.
Tell me about a time a design was not feasible as specced. What did you do?
Show collaboration: you explained the constraint, offered alternatives, and protected the user experience rather than silently shipping something different.
How do you handle browser or device inconsistencies?
Mention progressive enhancement, feature detection, and testing on real devices. A specific war story helps.
Walk me through a component you are proud of.
Pick one with interesting constraints — accessibility, reuse, performance — and explain the API you designed for it, not just what it looked like.
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Resume tips that move the needle
For frontend developers specifically — generic advice costs you here
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Link to live work: a portfolio, deployed projects, or specific pages you shipped — frontend is one of the few fields where reviewers can click your output.
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Cite performance numbers where you have them, such as Lighthouse scores or load-time improvements.
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Mention accessibility work explicitly; it is increasingly a screening criterion.
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Be specific about your framework depth — 'React with TypeScript, 4 years' beats a list of ten libraries.
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Show collaboration with design: mention Figma handoff, design systems, or component libraries you maintained.
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Where this role goes
Typical progression
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Junior Frontend Developer
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Frontend Developer
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Senior Frontend Developer
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Staff Frontend Engineer
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