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38 web application developer jobs at 32 companies in Pennsylvania

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Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
Help us #BeatIndeed & #BeatLinkedIn
1w
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Web Application Developer, Jewish Studies (Temporary, Part-Time)
Philadelphia, Pennsylvania, United States
$7-$55/hr OnsitePart Time
University of Pennsylvania
University of Pennsylvania: Research university offering higher education and healthcare services.
2+ YOEBachelor's degree with 2+ years related experience; full‑stack development with HTML5,CSS,AJAX,JavaScript/jQuery,Python,Django,React; unit testing and Git; strong communication and ability to work 9am-5pm ET.
HTML5, CSS, AJAX, JavaScript, jQuery, Python, Django, React, Git
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3w
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Sr. Web Developer
Easton, Pennsylvania, United States
OnsiteFull Time
Crayola
Crayola: Manufactures art supplies and creative tools for children.
8+ YOEBachelor's in CS/IS, 8+ years web application development experience with ASP.NET/.NET Core, Web API, front-end JavaScript frameworks, SQL Server, Azure DevOps; Sitefinity CMS or CMS experience; leadership and communication skills.
Sitefinity CMS, ASP.NET, .NET Core, Web API, AngularJS, Bootstrap, SQL Server, Azure DevOps, GitLab, Azure Foundry AI, NIST CSF
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3w
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Staff Application Engineer
Philadelphia, Pennsylvania, United States
$153k-$180k/yr HybridFull Time
FMC
FMCNYSE: FMC: Manufacturer of chemical and biological crop protection products.
7+ YOEBachelor's in engineering/CS or related and 7 years software development experience, including 2 years each in web development, CI/CD, mobile app development, Python, JavaScript/React, system architecture, and leading projects; telecommute 2 days/week.
React Native, REST, ReactJS, Angular, Python, Django, CI/CD, JavaScript
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1mo
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Application Developer C
Philadelphia, Pennsylvania, United States
$72k/yr OnsiteFull Time
University of Pennsylvania
University of Pennsylvania: Provides Ivy League higher education and conducts advanced scientific research.
2+ YOEBachelor's and 2+ years' experience required. Develop, deploy, and maintain pathology software, data pipelines, and AI-enabled tools; experience with Python, Next.JS, electron, web apps, databases, APIs, and version control; strong analytical and communication skills.
Python, Next.JS, electron
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3d
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Senior Application Developer
Pennsylvania or Maryland or Washington or North Carolina or Louisiana or Kentucky or Kansas or Indiana or Illinois or Georgia or Iowa or Florida or Colorado or California or Delaware or Connecticut or Arkansas or Arizona or Alabama or Alaska or Nevada or Vermont or Tennessee or Idaho or Oklahoma or Hawaii or Mississippi or Utah or New Hampshire or New Mexico or Wyoming or North Dakota or South Dakota or Rhode Island or West Virginia or Montana or Texas or Ohio or New Jersey or Oregon or South Carolina or Missouri or Virginia or Massachusetts or Nebraska or Minnesota or Michigan or Wisconsin or New York or Maine or District of Columbia
$86k-$139k/yr RemoteFull Time
Highmark Health
Highmark Health: Provides health insurance and integrated medical care services.
5+ YOE5+ years in scalable system design and modern programming languages (.NET, Angular, SQL, Java, Python, C#, JavaScript); experience defining system architectures, web services (REST/HTTPS/JSON); healthcare IT preferred.
.NET, Angular, SQL, Java, Python, C#, JavaScript, REST, HTTPS, JSON, HTML5, CSS, Google Cloud Platform (GCP), Amazon Web Services (AWS), MSSQL, Windows Server
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1mo
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Application Developers (early career)
Rome or Pittsburgh or McLean or New York or Pennsylvania or United States
$72k-$123k/yr OnsiteFull Time
BAE Systems
BAE SystemsLondon Stock Exchange: BA: Provides advanced defense, aerospace, and security technology solutions.
0+ YOE0–3 years application development experience; foundational knowledge of JavaScript, Java, Python, C#, HTML/CSS; familiarity with web technologies, SQL/NoSQL, APIs; ability to work on small Agile teams; U.S. citizenship required.
JavaScript, Java, Python, C#, HTML/CSS, SQL, NoSQL, Agile, Scrum, SDLC, API
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3mo
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Application Security Engineer
Coral Gables or Florida or Texas or South Carolina or Pennsylvania or Massachusetts or Illinois or Georgia or North Carolina or Florida
$110k-$130k/yr HybridFull Time
Ryder
RyderNYSE: R: Provides commercial vehicle leasing, logistics, and supply chain solutions.
5+ YOE5+ years OWASP, SAST, DAST, SCA, RASP; 7+ years in application security or related field; strong web security knowledge; secure SDLC; Bachelor's in CS; CISSP/OSCP/CASE preferred.
SAST, DAST, OWASP, SCA, RASP, WAF, CI/CD, Azure DevOps, Terraform, Python, JavaScript, .NET
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1mo
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Senior Web Applications Developer (TypeScript/HTML/CSS)
Pittsburgh, Pennsylvania, United States
OnsiteFull Time
YinzCam
YinzCam: Develops digital fan engagement platforms for sports organizations.
5+ YOE5+ years expert TypeScript, Svelte, HTML/CSS, and website performance tuning. Bachelor's and Master's in Computer Science required. Self-learner able to work production code and non-traditional sports industry hours.
TypeScript, JavaScript, Svelte, HTML, CSS
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1mo
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Associate Application Developer – Adobe Experience – Co-op 2026
State College, Pennsylvania, United States
$44k-$80k/yr HybridInternship
IBM
IBMNew York Stock Exchange: IBM: Global technology providing enterprise software, cloud, and consulting.
Currently pursuing a university degree; ability to work in-office in State College, PA; up to 20 hrs/week during term and 40 hrs/week during breaks; ability to obtain federal security clearance; experience or coursework with Java, AEM, and web technologies preferred.
Java, OSGi, Sling, Sling Models, HTL, JCR APIs, Adobe Experience Manager (AEM), Adobe Experience Platform, Adobe Target, Adobe Journey Optimizer, Customer Journey Analytics, RT-CDP, HTML5, CSS3, JavaScript, React, Vue.js, Git, Maven, Jenkins, Microsoft Azure DevOps, RESTful APIs, GraphQL
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2mo
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Application Security Engineer
Harrisburg, Pennsylvania, United States
RemoteFull Time
D&H Distributing
D&H Distributing: Distributes technology products and IT solutions to resellers.
3+ YOESecurity-focused engineer with SDLC, at least one programming language, code reviews, OWASP Top 10, OAuth/ADFS, vendor security assessments, PCI and vulnerability management exposure.
Web development, .NET, Java, PowerShell, Python, Perl, API security
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3mo
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Security Engineer - Application Security
Pittsburgh, Pennsylvania, United States
RemoteFull Time
Fragomen
Fragomen: Provides global immigration legal services and mobility solutions.
5+ YOE5+ years web app development; secure SDLC, DAST/SAST experience; strong communication; knowledge of secure coding and threat modeling.
DotNet, Python, Java, DAST, SAST, CSSLP, CASE
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1mo
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Application Security Pentester, Specialist
Malvern or Charlotte or Dallas or Fort Worth
HybridFull Time
Vanguard
Vanguard: Provides mutual funds, ETFs, and investment management services.
5+ YOE5+ years related experience (including 3 years in IT security or application development), undergraduate degree or equivalent, hands-on web/API/network pentesting, SAST/DAST tooling preferred, Python or Java proficiency, preferred pentesting certifications.
DAST, SAST, MITRE ATT&CK, OWASP Top 10, OWASP Top 10 API, SANS Top 25, Python, Java
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2mo
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Software Developer
Windber, Pennsylvania, United States
OnsiteFull Time
Chan Soon-Shiong Medical Center at Windber
Chan Soon-Shiong Medical Center at Windber: Community-based nonprofit hospital providing comprehensive healthcare and clinical services.
0+ YOEBachelor's in CS or related field, 0-3 years application development in C#/C++/Java, familiarity with web apps, relational databases, Windows OS and Microsoft Office, team communication and full SDLC experience.
C#, C++, Java, Microsoft Windows, Microsoft Office
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3d
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Software Developer II
New York or Clifton Park or Cincinnati or Philadelphia or Milwaukee or Columbus
OnsiteFull Time
Ultimus Fund Solutions
Ultimus Fund Solutions: Provides fund administration services to the investment management industry.
7+ YOE7+ years developing web applications with C#/.NET, Angular, SQL Server; bachelor’s degree or equivalent; experience with Agile, Azure DevOps, Visual Studio; strong communication and troubleshooting skills.
.NET Framework, .NET Core, Microsoft SQL Server, Angular, MVC, Blazor, Azure DevOps, JAMS Enterprise Scheduler, Visual Studio, Git, Microsoft Office Suite, Adobe Acrobat, C#, jQuery
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1mo
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Application Support Specialist (On-Site)
Stroudsburg, Pennsylvania, United States
OnsiteFull Time
Neumo
Neumo: Provides integrated software and payment solutions for government agencies.
3+ YOE3+ years web development, SharePoint administration, or application support; proficiency with Microsoft SharePoint Online/365, HTML, CSS, JavaScript, WordPress, Microsoft Power Platform; strong communication and customer service skills.
Microsoft SharePoint Online/365, Microsoft Power Platform, Power Automate, Power Apps, HTML, CSS, JavaScript, WordPress, ITIL
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1mo
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Software Developer | PTS Development | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading firm specializing in proprietary financial markets.
3+ YOEBS in CS or related, 3+ years developing production applications, proficiency in Python, C#, and/or Java, TypeScript/web experience preferred, strong collaboration and communication skills.
Python, C#, Java, TypeScript
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2mo
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Sr. Software Engineer
Philadelphia or New Jersey or Delaware or New York or Maryland or Florida or South Carolina or Texas or Virginia or Georgia
HybridFull Time
FreedomPay: A fast-growing payments and commerce technology delivering secure solutions globally.
7+ YOE7+ years in application development and testing; strong web, SPA, and backend skills; security-focused; Agile experience; strong English communication.
.NET, SQL Server, MVC, jQuery, React, Angular, Redux, TypeScript, JWT, Git, HTML, CSS, Websockets
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1w
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Software Engineer II – CTS
Pittsburgh, Pennsylvania, United States
HybridFull Time
Duquesne University
Duquesne University: Private Catholic research university providing undergraduate and graduate degrees.
1+ YOEBachelor's in CS/IT or equivalent, minimum 1 year web/application development and administration, experience with Java, JavaScript, React.js, HTML/CSS, REST services, databases (Oracle preferred), SSO and web servers; strong communication and analytical skills.
Java, JavaScript, React.js, HTML, CSS, REST, BootStrap, jQuery, Oracle, Linux, UNIX, Windows, Apache, CAS, SAML2, Tomcat, WebSphere, SSL, DNS
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1mo
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Software Developer | PTS Development | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group
Susquehanna International Group: Global quantitative trading and market making firm.
3+ YOEBS in CS or related, 3+ years developing and supporting production applications, strong proficiency in Python, C#, and/or Java; TypeScript and web experience preferred; strong collaboration and communication skills.
Python, C#, Java, TypeScript
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1mo
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Software Engineer
King of Prussia or Littleton
$77k-$152k/yr HybridFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Proficiency in Java or C#, experience developing/debugging/testing web applications and services, ability to support on-call/shift work, strong problem solving and communication skills, Secret clearance and US citizenship required.
Java, C#, RESTful APIs, ActiveMQ, Docker, Kubernetes, Elasticsearch, Kibana, Logstash
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