85 net software engineer jobs at 50 companies in New Castle, DE
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Senior .Net Developer
Chicago or Crum Lynne
$90k-$150k/yr HybridFull Time
5+ YOE5+ years software development with strong .NET and SQL Server experience, cloud (GCP/Azure/AWS) familiarity, DevOps and container experience; bachelor's in CS/STEM preferred.
.NET Framework, Microsoft SQL Server, Google Cloud, GCP, Azure, AWS, Kubernetes, Docker, OneTru, DevOps, Continuous Deployment, Infrastructure as Code, Automated Testing, Automated Configuration Management
1w
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Senior .NET Developer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
5+ YOEUS citizen with 5+ years .NET experience, expertise in C#, ASP.NET, MVC, Angular, SQL/Oracle, unit testing, and Azure DevOps; ability to obtain NACLC and DoD 8570/8140 certifications preferred.
ASP.NET Web Forms, ASP.NET MVC, C#, Angular, Oracle Database, Informatica PowerCenter, HTML, JavaScript, TypeScript, jQuery, Ajax, Entity Framework, Angular Material, Infragistics, Kendo UI, DevExpress, xUnit, nUnit, MS Tests, Jasmine, JEST, .NET Framework 4.8, .NET Core, Microsoft Visual Studio, Microsoft VS Code, Azure DevOps Server, SQL, Oracle SQL, PL/SQL, TOAD, Microsoft Team Foundation Server, Microsoft Office Suite
1mo
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Backend .NET Engineer
Philadelphia, Pennsylvania, United States
OnsiteFull Time
5+ YOE5+ years backend development with C#/.NET, REST APIs, SQL/EF Core, CI/CD, automated testing, Git, cloud (Azure preferred), spec-first workflows (OpenSpec) and experience mentoring teammates.
C#, Microsoft .NET, ASP.NET Core, ASP.NET Core Web API, SQL, Entity Framework Core, Git, Azure, OpenSpec, GitHub Spec Kit, CI/CD
1d
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Software Engineer
Moorestown, New Jersey, United States
$80k-$97k/yr RemoteFull Time
Production experience with a major LLM platform, backend engineering in C#/.NET or Python, Azure, CI/CD, infrastructure as code, GitHub security, REST/OData APIs, and least-privilege access design.
C#, .NET, Python, Azure, Azure App Service, Azure Container Apps, Azure Functions, Azure Key Vault, Azure Managed Identity, GitHub Actions, Azure DevOps, Bicep, Terraform, OpenID Connect (OIDC), GitHub, Dependabot, OWASP Top 10, SAST, DAST, SCA, SLSA, REST, OData, MCP, Anthropic Claude, OpenAI, Google Gemini, AWS Bedrock, NIST AI RMF, NIST 800-53, CIS Controls, SIEM
2w
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Software Developer
Exton or Philadelphia
RemoteFull Time
5+ YOE5+ years professional software development experience with C# and .NET; experience with React, TypeScript, SQL Server, PostgreSQL, Docker, testing tools, and CI/CD; bachelor's degree or equivalent experience preferred.
C#, .NET, React, SQL Server, PostgreSQL, ASP.NET Core, Entity Framework Core, TypeScript, Testcontainers, Playwright, Docker, Docker Compose, GitHub Actions, xUnit, Bicep, Azure Container Apps, Kubernetes
1mo
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Software Developer
Philadelphia, Pennsylvania, United States
$92k-$154k/yr HybridFull Time
3+ YOE3+ years software/product development; degree in engineering, computer science, math, or physics; experience with C#/.NET, C++, JavaScript; strong debugging, communication, and design skills.
C#/.NET, C++, JavaScript
3d
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Junior Software Engineer
Philadelphia, Pennsylvania, United States
$75k-$95k/yr HybridFull Time
3+ YOE3 years software development experience preferred; hands-on C#/.NET, React/Next.js, JavaScript/TypeScript, SQL, Azure, Power BI/Power Platform, Docker, and CI/CD familiarity; bachelor’s degree preferred.
C#, .NET, React, Next.js, JavaScript, TypeScript, SQL, Power BI, Power Platform, Azure DevOps, Microsoft Azure, Docker, Azure Container Registry (ACR), Azure App Service, Azure Functions, SQL Server Reporting Services (SSRS), Power Apps
1mo
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Lead .Net Platform Engineer (Payments Ingestion) - Senior Vice President
New Castle or Tampa
$156k-$234k/yr HybridFull Time
Hands-on .Net engineering for high-throughput payment platforms, microservices, Kafka, Oracle/MongoDB, cloud-native (OpenShift/AWS), Kubernetes/Docker, CI/CD, Jenkins, and platform leadership; AI/ML integration and strong stakeholder communication.
.Net, React, Kafka, Oracle, Microsoft SQL, MongoDB, Spring MVC, Spring Boot, REST APIs, Jenkins, Gradle, Maven, Grafana, OpenShift, AWS, Kubernetes, Docker, GitHub Copilot, Gemini, LLMs, JVM, CI/CD, TDD, Python, Pinecone, Weaviate, LangChain, AutoGen, COBOL, Assembler, C++
1mo
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Lead .Net Platform Engineer (Payments Ingestion) - Senior Vice President
New Castle or Irving
$156k-$234k/yr HybridFull Time
10+ YOE10+ years .Net experience, microservices, Kafka, Oracle/MongoDB, cloud-native (OpenShift/AWS), Kubernetes/Docker, CI/CD (Jenkins, Gradle/Maven), JVM performance tuning, API design, secure engineering, Agile/SAFe. Bachelor's required; Master's preferred.
.Net, REST APIs, Spring MVC, Spring Boot, Kafka, Oracle, Microsoft SQL, MongoDB, OpenShift, AWS, Kubernetes, Docker, CI/CD, Jenkins, Gradle, Maven, Grafana, GitHub Copilot, LLMs, Gemini, JVM, Python, Pinecone, Weaviate, LangChain, AutoGen, COBOL, Assembler, C++, React
3mo
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Software Applications Engineer
Aberdeen Proving Ground, Maryland, United States
$115k-$130k/yr HybridFull Time
5+ YOEDoD Secret clearance; BS in computer science or related field; 5+ years in software applications engineering; strong .NET/C#, MudBlazor, HTML/CSS/JavaScript; API development; Azure/DevOps; security+; hybrid role near Aberdeen Proving Ground, MD.
C#, .NET, MudBlazor, HTML, CSS, JavaScript, OpenXml, ASP.NET Core, Entity Framework Core, SQL, Azure, DevOps, OpenID Connect, OAuth 2.0, Microsoft Entra ID
1d
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Principal Software Engineer
Philadelphia, Pennsylvania, United States
$180k-$212k/yr HybridFull Time
Extensive software engineering experience with Dynamics 365, Azure, cloud-native design, React/TypeScript, CI/CD and strong leadership; BS/MS in CS/Engineering or equivalent experience preferred.
Microsoft Dynamics 365, Microsoft Azure, Microsoft Azure Functions, React, TypeScript, JavaScript, .NET, C#, Microsoft Power Platform, Microsoft Power Apps, Microsoft Power Automate, Copilot Studio, GitLab
1d
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Senior Software Engineer II
Philadelphia, Pennsylvania, United States
$95k-$159k/yr RemoteFull Time
5+ YOERequires 5+ years of software engineering experience and a BS in Engineering or Computer Science or equivalent experience. Requires software development, data modeling, databases, coding, testing, and communication skills.
Java/J2EE, JavaScript, JSP, C/C++, HTML, XML, SQL, Windows, UNIX, .Net, Agile, Waterfall
1mo
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MP Software Engineer
King of Prussia, Pennsylvania, United States
$77k-$135k/yr OnsiteFull Time
US citizen with ability to obtain/maintain TS/SCI; bachelor’s in CS/Software/engineering or equivalent; experience with C#, JavaScript, Java or Python; Agile experience with Jira/Confluence; .NET Core/Angular and cloud/CI/CD familiarity preferred.
C#, JavaScript, Java, Python, Jira, Confluence, .NET Core, Angular, PostgreSQL, Redis, GitLab CI/CD, Docker, Kubernetes, Helm, Git, Conductor, Compass, DevSecOps
1mo
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Software Developer
Conshohocken or Portland
OnsiteFull Time
Bachelor's degree; experience with IRT preferred; prior work with C#, .NET, SQL Server; familiarity with Web-Services, MVC, and Entity Framework; strong attention to detail and teamwork skills.
Interactive Response Technology (IRT), C#, .NET, SQL Server, Web-Services, Model View Controller (MVC), Entity Framework (EF)
3w
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Software Developer (.NET/C#) – NAVSUP Programs
Philadelphia, Pennsylvania, United States
HybridFull Time
0+ YOEBachelor's in CS/IT/SE, active or obtainable Secret clearance, 0–4 years development experience, proficiency with C#, ASP.NET MVC, SQL Server, HTML, JavaScript, REST/Web Services, OOP, relational DBs, troubleshooting, and Agile teamwork.
C#, ASP.NET, MVC, SQL Server, HTML, JavaScript, REST APIs, Web Services, WebRoR, EFTS, SCIP, VersionOne, Azure DevOps, Jira
2mo
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Sr. Software Engineer
Camden, New Jersey, United States
$116k-$127k/yr HybridFull Time
6+ YOE6+ years full stack development with .NET/C#, REST APIs; Dynamics 365/Dataverse; Azure; Power Platform; SDLC/DevOps; Bachelor's degree.
.NET, C#, SQL Server, REST APIs, Azure, Microsoft Dynamics 365, Dataverse, Power Apps, Power Automate, Azure DevOps, Git, CI/CD
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Software Engineer II
Wilmington, Delaware, United States
OnsiteContract
5+ YOE5+ years software development with Angular and .NET, C#, Azure, DevOps and CI/CD experience; strong SOLID and testing practices; ability to lead modernization and mentor junior developers.
Angular, .NET Framework, .NET Core, C#, Web APIs, Entity Framework Core, Microsoft SQL Server, Azure, DevOps, CI/CD, GitLab, ASP.NET Web Forms, PrimeNG, Kendo UI
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Software Engineer III
Aberdeen, Maryland, United States
$120k-$140k/yr OnsiteFull Time
Techximius: Provides specialized IT and engineering services for defense missions.
4+ YOEProven experience with C#, .NET, VB.NET, ASP.NET, JavaScript, SQL; ECM and large-scale data/document migrations; API integrations; SQL Server/Oracle; Bachelor\u0002s degree; able to obtain DoD clearance; 4+ years experience.
C#, .NET, VB.NET, ASP.NET, JavaScript, PowerShell, SQL, SQL Server, Oracle, Hyland OnBase, Unity API, Brainware, ViewStar (Global360), Xamarin, Git, Enterprise Content Management (ECM)
1mo
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Senior Software Engineer, Medical Device
Newark, Delaware, United States
$107k-$167k/yr HybridFull Time
5+ YOEExpert in .NET/C# and object-oriented design with strong CS fundamentals, multithreading, debugging, CI/CD and software architecture; 5+ years (Bachelors) or 4+ years (Masters) experience; mentoring and technical leadership skills; medical device experience a plus.
.NET, C#, WPF, Java, Android, C++, C, DICOM, HL7, CICD
1d
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Senior Software Developer
Philadelphia or United States
$110k-$135k/yr RemoteFull Time
5+ YOE5+ years professional software development, BS preferred, strong experience with Angular, .NET Core/ASP.NET Core, C#, TypeScript, JavaScript, HTML/CSS, PostgreSQL, API design, OOP and architecture.
Angular, ASP.NET Core, C#, PostgreSQL, TypeScript, JavaScript, HTML/CSS