70 senior full stack software engineer jobs at 45 companies in Middletown, DE

PromotedHiringCafe
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
2mo
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Senior Full Stack Software Engineer
New Castle, Delaware, United States
HybridFull Time
Waters Corporation
Waters CorporationNYSE: WAT: Provider of analytical laboratory instruments and software.
5+ YOEBachelor's degree or equivalent, 5+ years building large-scale applications using C#, .NET stack and React/TypeScript; strong software engineering practices, database and multithreading knowledge, Agile experience.
C#, .NET, ASP.NET, RESTful Web API, EF Core, PostgreSQL, React, Typescript, Kubernetes, Docker, GitHub, GitHub Actions, SpecFlow, OWASP, PKI, X509 Certificates, TLS, SQL
2mo
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Full Stack Software Engineer
King of Prussia, Pennsylvania, United States
$108k-$228k/yr OnsiteFull Time
CACI
CACINYSE: CACI: Provides information technology and professional services to government clients.
8+ YOESenior full-stack software engineer with 8+ years in OO languages (Python), 2+ years JS/TS, TS/SCI with Poly, and strong SDLC experience.
Python, JavaScript, TypeScript, RESTful APIs, Microservices, Cloud (AWS/Azure), Kubernetes, Git, Jira, Confluence
2w
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Full Stack Software Engineer
Baltimore or Washington
HybridFull Time
Brandes Associates
Brandes Associates: Provides engineering, software, and program support to defense agencies.
5+ YOE5+ years software engineering experience; strong Java and JavaScript/TypeScript skills; experience with REST, XML/JSON, SQL databases, CI/CD, Git workflows, and secure/messaging systems; active US citizenship and Secret clearance required.
Java, JavaScript, TypeScript, MySQL, PostgreSQL, SQL Server, Oracle, Linux, Windows, Jira, Confluence, GitHub, GitLab, Bitbucket, Git, Apache Camel, Mule, JMS, AMQP, RabbitMQ, ActiveMQ, Artemis, Docker, Kubernetes, SBOM, CI/CD
1w
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Senior Full Stack Engineer
New York City or Waltham or East Norriton or Princeton
OnsiteFull Time
Trinity Life Sciences
Trinity Life Sciences: Strategic consulting and analytics for life sciences companies.
Develop and maintain full-stack applications to support life sciences commercialization and collaborate with cross-functional teams.
1mo
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Full Stack Software Engineer
Aurora or Philadelphia
$82k-$172k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
5+ YOEBachelor's in CS or related, TS/SCI with Polygraph required, 5+ years OO experience (Python focus), 2+ years JavaScript/TypeScript, SDLC and microservices experience, API development, unit/integration testing, Agile, ability to work onsite full time.
Python, JavaScript, TypeScript, AWS, Azure, Kubernetes, React, Angular, Git, GitLab, Jira, Confluence
1mo
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Senior Full Stack Engineer (TypeScript, Node.js)
Malvern or United States
HybridFull Time
EPAM Systems
EPAM SystemsNYSE: EPAM: Provides global digital platform engineering and software development services.
Senior-level full‑stack expertise with TypeScript and Node.js, experience building AI/agentic systems, component-based frontends, system design, and participation in on-call production support.
TypeScript, Node.js, LangGraph, Morpheus, Stencil, Angular, OpenAI, Anthropic, Amazon Web Services
2mo
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Sr. Full Stack Software Developer (Camden, NJ, US)
Camden, New Jersey, United States
$120k-$150k/yr OnsiteFull Time
Holtec International
Holtec International: Provides nuclear fuel storage systems and small modular reactors.
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
2w
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Senior Full Stack Engineer
Broomall or United States
$150k-$175k/yr RemoteFull Time
Xactus
Xactus: Provides verification and credit reporting for mortgage lenders.
7+ YOE7+ years professional software development experience with strong hands-on C#/.NET Framework and SQL Server; experience with Angular, TypeScript/JavaScript, Azure, CI/CD tools; strong communication and problem-solving skills.
C#, .NET Framework, .NET Core, ASP.NET Web Forms, Angular, TypeScript, JavaScript, SQL Server, Azure, Jenkins, Terraform, Terragrunt, HTML, CSS
3d
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Senior Full Stack Data Engineer
West Chester, Pennsylvania, United States
OnsiteFull Time
Comcast
ComcastNASDAQ: CMCSA: Provides global telecommunications, media content, and entertainment services.
7+ YOEBachelor's preferred,5+ years full-stack/data engineering experience (7+ preferred),backend and frontend development,Power BI dashboards,API and microservices,Oracle/Mongo DB,Cloud Foundry,GitHub,ELK,Agile with Jira.
Power BI, Jira, Smartsheet, Java, Python, Node.js, React, Angular, Tailwind CSS, DotNet, REST, API Gateway, Mongo DB, Cloud Foundry, GitHub, GitHub Actions, ELK, Agentic AI, Open Spec SDD
1w
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Lead Full Stack Engineer, (Senior Consultant, Engineering & Technical Services)
Baltimore or Alabama or California or Delaware or District of Columbia or Florida or Georgia or Maryland or New Jersey or New York or North Carolina or Pennsylvania or South Carolina or Tennessee or Texas or Virginia or West Virginia
$121k-$160k/yr RemoteFull Time
Fearless
Fearless: Digital services firm delivering IT solutions for government agencies.
10+ YOE10+ years software engineering experience, technical lead experience, cloud and full-stack development, CI/CD and DevSecOps familiarity, strong communication and mentoring skills, bachelor’s in CS or equivalent.
AWS, Azure, Google Cloud Platform, CI/CD
1mo
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Full Stack Engineer, Foundation
United States or Oakland or San Francisco or New York City or Boston or Seattle or Irvine or Los Angeles or Monterey or Santa Barbara or Santa Rosa or Austin or Portland or Philadelphia or Chicago
$146k-$235k/yr RemoteFull Time
LaunchDarkly
LaunchDarkly: Provides a feature management platform for software development teams.
5+ YOE5+ years full-stack engineering; strong TypeScript and React; experience with Go or Node; shipped AI/agent features and MCP/LLM tooling; instrumentation, funnel analysis, A/B testing, and on-call support experience.
TypeScript, React, Go, Node, MCP servers, LLM, IDE, LaunchDarkly
2w
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Full Stack Solutions Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Dechert
Dechert: Global law firm providing legal representation and advisory services
5+ YOEBachelor's in a technical discipline required; 5+ years software engineering experience; 2+ years AI-enabled solutions preferred; proficiency with full-stack development, integrations, secure development, CI/CD, Git, and Microsoft Azure.
C#, ASP.NET Core, SQL, Python, JavaScript, TypeScript, React, Angular, Vue, HTML, CSS, CI/CD, Git, Azure DevOps, Microsoft Azure, Model Context Protocol (MCP), vector search, large language model APIs, RAG
2mo
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Full Stack Software Engineer Sr
King of Prussia, Pennsylvania, United States
OnsiteFull Time
Lockheed Martin
Lockheed MartinNYSE: LMT: Designs and manufactures global security and aerospace systems.
Proficiency in TypeScript, JavaScript, or C#; system design; Agile/Scrum experience (Jira/Version One/Confluence); GitLab CI/pipelines; ability to obtain and maintain Top Secret clearance; U.S. citizenship required.
TypeScript, JavaScript, C#, GitLab pipeline, Jira, Version One, Confluence, SQL, Angular, CSS, Astro UX, Material, REST
1mo
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Full Stack Developer
United States or Philadelphia
$160k-$180k/yr RemoteFull Time
SMB Team
SMB Team: Provides digital marketing and coaching services for law firms.
6+ YOE6+ years full-stack development experience; must show portfolio; autonomous; current on AI tooling; proficiency in JavaScript/TypeScript (React, Node.js), RESTful APIs, GraphQL, cloud (AWS/GCP/Azure), serverless; experience with AI APIs and Git.
JavaScript, TypeScript, React, Node.js, RESTful APIs, GraphQL, AWS, GCP, Azure, Serverless, OpenAI, Anthropic, Git, GitHub, CI/CD, HubSpot, Asana, PandaDoc, Slack, Google Workspace
1mo
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Full-Stack Engineer
Philadelphia, Pennsylvania, United States
HybridFull Time
CapTech
CapTech: Provides technology and management consulting services to large enterprises.
6+ YOE6+ years designing and developing applications on the Microsoft Stack or Java; RESTful API design with Swagger/OpenAPI; SQL Server and NoSQL experience; front-end using JavaScript/TypeScript and modern frameworks; AI tool and agent experience; strong communication.
Microsoft Stack, Java, RESTful APIs, Swagger, OpenAPI, SQL Server, NoSQL, Azure, AWS, GCP, JavaScript, TypeScript, HTML, CSS, Angular, React, Vue, Bootstrap, Agentic AI, Claude code, CodeX, Opencode, OpenClaude, Git
6d
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Full Stack Senior Software Engineer– Investment Risk Technology
Baltimore, Maryland, United States
$121k-$206k/yr HybridFull Time
T. Rowe Price
T. Rowe PriceNASDAQ: TROW: Global investment management firm providing funds and retirement services.
5+ YOEBachelor's or equivalent, 5+ years software engineering in object-oriented languages (C#/.NET, Java, etc.), cloud-native AWS experience, SQL proficiency, distributed systems and automated testing experience.
C#, .NET, PostgreSQL, React, AWS, SNS, SQS, S3, Lambda, ECS, DynamoDB, Snowflake, Dagster, Python, SQL, HireVue
1w
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Senior Full Stack Developer
Towson or California or Colorado or Illinois or Minnesota or New Jersey or New York or Oregon or Washington or United States
$85k-$117k/yr RemoteFull Time
Syms Strategic Group
Syms Strategic Group: Provides IT and professional services to federal government agencies.
8+ YOE8+ years building back-end services and RESTful APIs in Java and/or NodeJS, hands-on Angular experience, AWS/Azure cloud experience, Git/GitHub, unit/integration testing, Agile and strong communication.
Java, NodeJS, Angular, C#, .Net, AWS, Azure, API Gateway, Lambda, S3, CloudWatch, Git, GitHub, JUnit, Jest, JIRA, Docker, ECS, EKS, Microsoft Teams, Electronic Data Interchange X.12 (EDI)
3w
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Senior Lead Software Engineer, Full Stack (Bank Tech)
McLean or Wilmington or Philadelphia
$209k-$262k/yr OnsiteFull Time
Capital One
Capital OneNYSE: COF: Financial services offering credit cards, banking, and loans.
6+ YOEBachelor's degree, 6+ years software engineering experience, 1+ year cloud experience (AWS/Azure/GCP); strong full-stack skills (JavaScript/Java/TypeScript/Python/Go), leadership of small teams, and fast onboarding to new codebases.
JavaScript, Java, TypeScript, Python, Go, AWS, Microsoft Azure, Google Cloud, Fargate, Lambda
2mo
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Full Stack Developer-Philadelphia Hybrid candidates ONLY
Philadelphia, Pennsylvania, United States
HybridFull Time
Docupace
Docupace: Provides workflow automation and document management software for financial firms.
5+ YOE5+ years in software development; full stack experience; proficient in JavaScript, AWS; strong CS fundamentals; remote-capable; translate feedback into product improvements.
Java, Python, React, Django, AWS, PostgreSQL, GraphQL, GitHub Actions, Docker
2mo
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Senior Full Stack Engineer - United States
Atlanta or Dallas or Orlando or Philadelphia or Washington or Wichita
$145k-$180k/yr RemoteFull Time
Koch Inc.
Koch Inc.: Operates global manufacturing, refining, and industrial technology businesses.
5+ YOE5+ years React.js/TypeScript, Node.js/NestJS/Express, PostgreSQL, AWS QuickSight; multi-tenant SaaS; TS ORM (TypeORM/Prisma); AWS services; Agile; BS in CS or equivalent.
React, Next.js, shadcn/ui, MUI, CSS, Node.js, NestJS, Express.js, PostgreSQL, TypeORM, Prisma, JWT, OAuth 2.0, HMAC, API keys, AWS, Terraform, QuickSight, RDS, S3, Lambda, IAM, Cognito, Jira, Confluence, Bitbucket