27 front end software development engineer jobs at 19 companies in Middletown, DE
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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
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
1mo
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Frontend Software Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
Strong frontend experience with JavaScript, VueJS, Vite, HTML, CSS; experience with REST/OpenAPI, OAuth/SAML, frontend testing, CI/CD, and building data-heavy user interfaces.
JavaScript, VueJS, Vite, HTML, CSS, REST, OpenAPI, OAuth, SAML
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
2w
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Lead Frontend Engineer
Baltimore, Maryland, United States
$115k-$160k/yr HybridFull Time
8+ YOEBachelor's degree in computer science, computer engineering, or related field, or equivalent experience; 8+ years of related experience; expert Flutter, accessibility, mobile release, monitoring, architecture, and mentoring skills.
Flutter, BLoC, Riverpod, Redux, DevTools, Swift, Kotlin, Claude, Cursor, Codex, iOS App Store, Google Play Store, WCAG
2mo
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Software Engineer – Front-End Focus (.NET) - (Remote)
Baltimore or United States
$75k-$115k/yr RemoteFull Time
3+ YOEUS authorization and 3 of last 5 years residency, ability to obtain Public Trust clearance, Bachelor’s in CS/Engineering, 3+ years full-stack experience with front-end focus using .NET, React/Next.js, Azure, CI/CD, and strong communication skills.
.NET, ASP.NET Core, Core MVC ASP.NET, Entity Framework, LINQ, React, Next.js, CSS, Agentic AI, Azure, Azure Web Apps, Azure Functions, Azure SQL Database, Team Foundation Server (TFS), Octopus Deploy, Git, SQL, TypeScript, PA11Y, Razor, Blazor, Azure DevOps, Azure Cognitive Services, Logic Apps, Docker, Kubernetes, Azure Kubernetes Service (AKS), OAuth, JWT, Azure Active Directory, Azure AD B2C
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UI/UX Front End Developer
Philadelphia or Ambler or Pune or Medellín
RemoteFull Time
5+ YOERequires 5–7+ years in frontend development, strong Angular, TypeScript, RxJS, HTML5, and CSS/SASS skills, component architecture experience, Git/GitHub, CI/CD, cloud familiarity, and agile experience.
Angular, TypeScript, RxJS, HTML5, CSS, SASS, Git, GitHub, CI/CD, DevOps, RESTful APIs, WCAG
2mo
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Staff Engineer - Software, Frontend Platform Engineering
Baltimore, Maryland, United States
$130k-$160k/yr OnsiteFull Time
8+ YOE8+ years frontend software engineering experience; deep expertise in Angular, JavaScript/TypeScript, micro frontend architectures, observability, performance, API integration, and technical leadership; BS in CS preferred.
Angular, JavaScript, TypeScript, AWS
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
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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
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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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Full Stack Software Engineer
Annapolis Junction, Maryland, United States
OnsiteFull Time
3+ YOEExperienced software engineer skilled in Python/Java, front-end web tech, data processing, and streaming tools. Top Secret clearance required with polygraph. U.S. work authorization; no visa sponsorship.
Python, Java, Streamlit, TypeScript, HTML, CSS, JavaScript, React, Angular, Vue, Apache Spark, Jupyter Notebook, pandas, NumPy, Parquet, JSON, CSV, XML, Git, Apache Airflow, MySQL, MariaDB, PostgreSQL, Slurm, JIRA, Confluence
2mo
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Lead Software Engineer
Camden, New Jersey, United States
$116k-$140k/yr HybridFull Time
8+ YOE8+ years Java, 4+ years AEM, 3+ years cloud, AWS microservices, front-end tech, build tools.
Java, Spring Boot, AEM, AWS, Maven, Gradle, Vue.js, React, jQuery, CSS, HTML5, S3, EC2, Lambda, API Gateway, Docker, GitHub Actions
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Staff .Net Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
8+ YOERequires 8+ years of software engineering experience, full-stack development, C#, TypeScript, .NET, front-end frameworks, distributed systems, APIs, databases, technical strategy, and CI/CD expertise.
C#, TypeScript, .NET Framework, .NET 5+, Angular, React, Vue, AWS, Azure, Python, HL7, FHIR, EHR, HIPAA, SOC2, CI/CD
1mo
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Senior React Software Engineer (contract)
Baltimore, Maryland, United States
$65-$75/hr RemoteContract
4+ YOEU.S. citizen required. 4+ years front-end experience with React and JavaScript/TypeScript. Experience with reusable component libraries, client-side state, accessibility, responsive design, testing, CI/CD, and strong communication skills.
React, TypeScript, JavaScript, HTML, CSS, CI/CD, Git
3mo
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Sr. Full Stack Software Developer (Camden, NJ, US)
Camden, New Jersey, United States
$120k-$150k/yr OnsiteFull Time
10+ YOESenior-level full-stack developer with 10+ years in enterprise environments; strong C#, .NET, REST, front-end tech, SQL Server, security, and architecture leadership.
C#, NET Core, NET Framework, REST, Blazor, HTML5, CSS3, JavaScript, Bootstrap, SQL Server, OAuth2, OIDC, Azure AD/Entra ID, Git, CI/CD, Docker, CQRS
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
3w
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Adobe Edge Delivery Services Engineer
Albany or Arlington or Atlanta or Austin or Beaverton or Bentonville or Boston or Carmel or Charlotte or Chicago or Cincinnati or Cleveland or Columbus or Culver City or Denver or Des Moines or Detroit or Hartford or Houston or Irving or Kirkland or Miami or Milwaukee or Minneapolis or Morristown or Mountain View or Nashville or New York City or Oklahoma City or Overland Park or Philadelphia or Pittsburgh or Raleigh or Redmond or Sacramento or San Diego or San Francisco or Scottsdale or Seattle or St. Louis or St. Petersburg or Walnut Creek or United States
$59k-$196k/yr OnsiteFull Time
3+ YOERequires 3+ years of software/web and AEM Sites development, 1+ year of Edge Delivery, front-end, and migration experience, plus a bachelor's degree or equivalent work experience.
Adobe Experience Manager (AEM), Adobe Edge Delivery Services, Universal Editor, JavaScript, CSS, Core Web Vitals, Lighthouse, Adobe Firefly, AEM AI Assistant, Adobe GenStudio, Git, Code Sync, aem.livedelivery, CDN, Adobe Assets, Adobe Target, Adobe Analytics, Adobe Experience Platform (AEP), Adobe Campaign, Playwright
1w
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Full-Stack Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
6+ YOE6+ years designing, developing, and maintaining applications on the Microsoft Stack or Java; REST APIs, databases, front-end frameworks, AI development, Git, integrations, scalability, and technical communication.
Microsoft Stack, Java, RESTful APIs, Swagger, OpenAPI, SQL Server, NoSQL, Azure, AWS, GCP, JavaScript, TypeScript, HTML, CSS, Angular, React, Vue, Bootstrap, Claude code, CodeX, Opencode, OpenClaude, Git
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