20 web application developer jobs at 16 companies in Middletown, DE
🚀PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yrOn-SiteFull Time
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).
Web Application Developer, Maryland Coordination and Analysis Center
Baltimore, Maryland, United States
$110k-$125k/yrOnsiteFull Time
University of Baltimore: Provides undergraduate, graduate, and professional education in Baltimore.
3+ YOEBachelor's degree (or equivalent experience),3+ years developing enterprise web applications; proficiency with C#, ASP.NET Core, Microsoft SQL Server, T-SQL, JavaScript, HTML/CSS; ability to obtain top-secret clearance.
Microsoft Visual Studio, C#, ASP.NET Core, Razor Pages, JavaScript, HTML, CSS, Microsoft SQL Server, T-SQL, jQuery, Bootstrap, Git, Microsoft Internet Information Services (IIS)
Web Application Developer, Jewish Studies (Temporary, Part-Time)
Philadelphia, Pennsylvania, United States
$7-$55/hrOnsitePart Time
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.
Philadelphia or Pennsylvania or New Jersey or Delaware
$68k-$76k/yrRemoteFull Time
The Wistar Institute: Independent biomedical research institute focusing on oncology and vaccines.
1+ YOEBachelor's in Computer Science (or equivalent experience), 1–3 years relevant web application development experience, proficiency with JavaScript/TypeScript, SQL/MSSQL, Node.js/Express, Vue.js or React, REST APIs, CI/CD and version control.
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.
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.
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
New York or Clifton Park or Cincinnati or Philadelphia or Milwaukee or Columbus
OnsiteFull Time
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.
Software Developer | PTS Development | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
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.
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.
Software Developer | PTS Development | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
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.
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.
Sports Reference: Provides comprehensive online databases of sports statistics and history.
Design, build, and test web applications; contribute to full-stack development, CI/CD workflows, and data ingestion pipelines; write maintainable, testable code; legal right to work in the US or Canada required.
Software Developer | PTS Development | Experienced Hire
Bala Cynwyd, Pennsylvania, United States
OnsiteFull Time
Susquehanna International Group: Global quantitative trading firm providing proprietary financial market liquidity.
3+ YOEBachelors in a technical major, 3+ years developing and supporting production applications, strong proficiency in Python, C#, and/or Java; Typescript and web experience preferred; strong communication and cross-functional collaboration skills.
City of Philadelphia: Provides municipal services and governance to the city of Philadelphia.
3+ YOE3+ years building modern web applications; experience with SQL/Postgres, cloud infrastructure (AWS), component-based frontend frameworks (Vue.js or similar); strong testing, code review, and collaboration skills; bachelor’s degree or equivalent preferred.
Boomi: Provides cloud-based software for business application and data integration
5+ YOE5+ years building production web applications; strong TypeScript and React; proficient in Node.js or Python; experience with AWS services, CI/CD, integrations, AI-assisted coding tools, and rapid prototyping.
GE HealthCareNasdaq: GEHC: Develops and sells medical imaging and diagnostic technology.
4+ YOEAssociate's/Bachelor's in engineering or equivalent military/GE program, or HS + 4 years servicing electronic equipment; experience with electrical systems; valid driver's license; web application and Microsoft Office familiarity; available for on-call and regional travel.
Virtusa: Global provider of digital engineering and IT outsourcing services.
15+ YOE15 years IT experience with application development lifecycle; Bachelor\u0002s in Computer Science or related; strong Java/J2EE/Java EE skills, Spring Boot, Axon, microservices, web services, multithreading, XML, cloud-native experience; team leadership and hiring experience.
Java, J2EE, Java EE, Spring Boot, Axon, XML, Scrum
Fort Lauderdale or Philadelphia or Florida or Pennsylvania or United States
OnsiteFull Time
InfosysNYSE: INFY: Provides IT consulting, software development, and business outsourcing services.
Experience with Java and Spring Boot, microservices and REST/GraphQL APIs, web application development, GitHub, Jenkins, Kubernetes, Kafka; Postman and monitoring tools; Bachelor's degree or equivalent experience; US work authorization required.
Java, Spring Boot, GraphQL, RESTful API, Postman, GitHub, Jenkins, Kubernetes, Kafka, Python, Dynatrace, Splunk, Hazelcast, TIBCO, Vitria, webMethods, IBM WBI, SAP NetWeaver
Washington or Baltimore or Frederick or Annapolis Junction
$145k-$165k/yrHybridFull Time
Brandes Associates: Provides engineering, software, and program support to defense agencies.
5+ YOE5+ years in customer-facing technical roles; strong troubleshooting of Java applications, Linux/Bash, SQL, web servers (Jetty/Apache/IIS), PKI/certificates, release/support processes; DoD 8140/DCWF qualification (CompTIA Security+ covers); active DoD Secret required; US citizenship.