14 front end software development engineer jobs at 9 companies in Lancaster, PA
2d
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Front-end Software Developer
Aberdeen Proving Ground, Maryland, United States
$90k-$190k/yr OnsiteFull Time
Active TS/SCI clearance; production front-end development with JavaScript or TypeScript frameworks; HTML, CSS, web architecture, APIs, data interfaces, Git, testing, code review, and CI/CD experience.
JavaScript, TypeScript, React, Angular, Vue, HTML, CSS, REST APIs, WebSockets, Git, CI/CD
2d
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Front-end Software Developer
Aberdeen Proving Ground, Maryland, United States
$90k-$190k/yr OnsiteFull Time
Active TS/SCI clearance; production front-end development with JavaScript or TypeScript frameworks; HTML/CSS; REST APIs or WebSockets; data-intensive interfaces; Git, testing, code review, and CI/CD.
JavaScript, TypeScript, React, Angular, Vue, HTML, CSS, REST APIs, WebSockets, Git, CI/CD
1mo
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Frontend Developer
Malvern, Pennsylvania, United States
$110k-$120k/yr OnsiteFull Time
10+ YOE10+ years frontend experience with React, JavaScript/TypeScript, HTML5, CSS3, GitHub, CI/CD, and automated testing (Playwright). Bachelor's in Computer Science required.
React, JavaScript, TypeScript, ES5, ES6, HTML5, CSS3, GitHub, CI/CD, Playwright
1mo
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Sr. Software Developer
Mechanicsburg, Pennsylvania, United States
$100k-$105k/yr OnsiteContract
10+ YOE10+ years professional software development experience; strong expertise with C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript and modern front-end frameworks, SQL/Entity Framework, microservices, messaging, Git; U.S. citizen with current T3 investigation; onsite work required.
C#, VB.NET, .NET 8+, ASP.NET Core, JavaScript, React, Angular, SQL, Entity Framework, NServiceBus, RabbitMQ, Git
3w
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Sr Staff Fullstack Developer (Frontend focused)
Exton or Boulder or Huntsville or Dayton
$136k-$204k/yr OnsiteFull Time
4+ YOEBachelor's with 8 years, master's with 6, or PhD with 4; front-end and back-end development expertise, cloud deployment, web components, Git, Agile, and testing experience.
HTML5, CSS3, JavaScript, React, Angular, C#, Java, Python, Node.js, Docker, Kubernetes, AWS, Microsoft Azure, Git, Jasmine, Karma, Jest, Vitest, Ansys
2w
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Software Engineer Sr - E3
King of Prussia, Pennsylvania, United States
$110k-$205k/yr OnsiteFull Time
3+ YOERequires JavaScript/Node, C#, modern web frameworks, GitLab pipelines, Agile/Scrum, Top Secret clearance with SCI eligibility, and front-end development experience with React or Angular.
JavaScript, Node.js, C#, Angular, React, Vue.js, Ember.js, GitLab, Agile, Jira, Version One, Confluence, RxJS, Redux, MobX, NgRx, Context API, HTML5, CSS3, Sass, TypeScript, Material UI, Ant Design, Bootstrap, Jest, React Testing Library, Karma, Jasmine
2w
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Software Engineer Sr - E3
King of Prussia, Pennsylvania, United States
$110k-$205k/yr OnsiteFull Time
3+ YOERequires JavaScript/Node or C#, modern web framework experience, GitLab pipelines, Agile scrum experience, and an active Top Secret clearance with SCI eligibility. Desired: 3+ years of front-end development.
JavaScript, Node, C#, Angular, React, Vue.js, Ember.js, GitLab, Jira, Version One, Confluence, HTML5, CSS3, Sass, TypeScript, Redux, MobX, NgRx, Context API, RxJS, Material UI, Ant Design, Bootstrap, Jest, React Testing Library, Karma, Jasmine
3mo
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Front End/Angular 2+/Full Stack Java Developer
Hanover, Maryland, United States
OnsiteFull Time
1+ YOE1+ years of related experience in Java and web development (Angular 2+/ReactJS), OO Java (1.8+), Spring/Spring Boot, MongoDB or relational databases; US citizenship; Top Secret SCI + Polygraph clearance required.
Angular, Java, Spring, Spring Boot, MongoDB, ReactJS, Web Development
1w
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Java Engineer
New Castle, Delaware, United States
$80k-$110k/yr OnsiteFull Time
6+ YOE6–8 years of experience building enterprise Angular applications with AG Grid, TypeScript, RxJS, REST APIs, frontend architecture, caching strategies, and performance optimization; bachelor's degree in computer science.
Angular, TypeScript, RxJS, AG Grid, REST, HTTP
1mo
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Senior Software Engineer
Wilmington, Delaware, United States
HybridFull Time
Strong C#/.NET Core development skills, front-end framework and JavaScript/TypeScript proficiency, experience with Entity Framework Core, SQL Server, Azure Functions, AI-assisted tools, and test automation.
C#, .NET Core, Blazor Server, Blazor WebAssembly, GitHub Copilot, Cursor, Claude Code, Entity Framework Core, SQL Server, Azure Functions, Bootstrap, Playwright, MediatR, Fluxor, Polly, Docker, Kubernetes, Artillery, JMeter, K6, Locust, Azure AI Foundry, Azure OpenAI Service, Git, React, Angular, Vue, JavaScript, TypeScript
1w
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Java Analyst
New Castle, Delaware, United States
$80k-$110k/yr OnsiteFull Time
6+ YOERequires 6+ years of frontend engineering experience with Angular, TypeScript, RxJS, AG Grid Enterprise, RESTful APIs, caching strategies, frontend design patterns, and enterprise-scale applications.
Angular, TypeScript, RxJS, AG Grid, RESTful APIs
2w
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Lead Engineer | Onsite - Delaware
Wilmington or Delaware
$56k-$196k/yr OnsiteFull Time, Contract
8+ YOE3+ MgmtRequires 8+ years of front-end engineering and 3+ years as a tech lead, with expert React, Node.js, TypeScript, Webpack, Module Federation, micro-frontends, UI architecture, security, and delivery leadership experience.
React, Node.js, TypeScript, Webpack, Module Federation, Figma, Redux, Context, ARIA, WCAG, OAuth, OIDC, OWASP, Playwright, Sentry, Datadog RUM
4d
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Senior Full Stack Development (.NET + React)
West Chester, Pennsylvania, United States
OnsiteFull Time
7+ YOEBachelor's degree preferred and 7–10 years of relevant experience. Requires .NET, React, GitHub, GitHub Actions, front-end development, cloud platforms, AI, data integration, and reporting expertise.
.NET, React, GitHub, GitHub Actions, Angular, Tailwind CSS, Cloud Foundry, ELK, Agentic AI, Power BI, REST, MongoDB, Jira, Smartsheet, Oracle
1mo
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Java fullstack developer
Addison or Charlotte or Newark or Pennington
$76k-$120k/yr OnsiteFull Time
Experience with Core Java, Spring (MVC/Boot), microservices, REST/SOAP, Oracle DB, front-end scripting, cloud platforms; Bachelor's degree or equivalent; authorized to work in the US without sponsorship.
Java, Core Java, J2EE, Spring MVC, Spring Boot, Microservices, REST, SOAP, Oracle Database, Hibernate, JSP, JavaScript, WebSphere, JBoss, AWS, GCP, Azure