138 dotnet jobs at 77 companies in Middletown, DE

4d
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Technology Project Manager | Market Data
Bala Cynwyd, Pennsylvania, United States
OnsiteContract
Susquehanna International Group
Susquehanna International Group: Global quantitative trading and market making firm.
1+ YOEBachelor's degree,1+ years project/technical implementation experience,knowledge of system architecture,EMR? (not mentioned) Jira/Confluence,JQL,SDLC,SQL/Python/Shell scripting,and agile methodologies.
.NET, Python, C++, Jira, Confluence, JQL, SQL, Shell
4d
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Technology Project Manager | Market Data
Bala Cynwyd, Pennsylvania, United States
OnsiteContract
Susquehanna International Group
Susquehanna International Group: Global quantitative trading firm providing proprietary financial market liquidity.
1+ YOEBachelor's degree required; 1-3 years technical project/application implementation or business analysis experience; SDLC knowledge; familiarity with JIRA/Confluence; scripting (SQL, Python, Shell) preferred; ability to trace data flows across systems.
.NET, Python, C++, JIRA, JQL, Confluence, SQL, Shell
5d
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Senior .Net Developer
Chicago or Crum Lynne
$90k-$150k/yr HybridFull Time
TransUnion
TransUnionNYSE: TRU: Provides global credit reporting and risk management information solutions.
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
3w
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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
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
2mo
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CNO Analyst/Porgrammer (Fort Meade, MD, Maryland, United States)
Fort Meade, Maryland, United States
$89k-$249k/yr OnsiteFull Time
HII
HIINYSE: HII: Builds naval ships and provides global defense technology solutions.
2+ YOEExperience in one or more of Assembly, C, C++, Java, Perl, or Python; Windows/UNIX environments; TS/SCI with Poly clearance.
Assembly, C, C++, Java, Perl, Python, Visual Studio, .NET, Makefiles, UNIX, Windows, Embedded, Mobile platforms
2w
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Senior Full-Stack Microsoft Application Developer
Catonsville or Baltimore
$70k-$80k/yr HybridFull Time
JASINT
JASINT: Providing cybersecurity and technical services for national security missions.
3+ YOE.NET (Core/6/8) and C# experience, REST API integration, JSON/XML handling, OAuth2 auth, SQL Server/Oracle proficiency, async programming, logging and resiliency patterns.
.NET Core, .NET 6, .NET 8, C#, HttpClient, RestSharp, System.Text.Json, Newtonsoft.Json, SQL Server, Oracle, Entity Framework Core, Dapper, Git, Postman, Polly, Serilog, NLog, Docker, Azure WebJobs, Windows Task Scheduler, OAuth2
3d
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Software Architect
Malvern, Pennsylvania, United States
OnsiteFull Time
Akuvo
Akuvo: Provides AI-powered collections and credit risk software for financial institutions.
8+ YOE8+ years software development experience designing cloud-based distributed .NET solutions; strong front-end and SQL Server skills; Git workflow; excellent communication and problem-solving.
.NET, JavaScript, React, Vue, Angular, Microsoft SQL Server, Git, Microsoft Azure, CI/CD
3mo
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Application Architect
Dresher or Philadelphia
$170k-$200k/yr OnsiteFull Time
Ascensus
Ascensus: Administers tax-advantaged retirement and education savings plans.
8+ YOE2+ MgmtEight+ years software engineering with at least 2 years in a lead role; strong leadership, architecture, and mentoring skills; proficient in Agile/Scrum, CI/CD, and AI-enabled tooling.
.NET, JavaScript, MS SQL Server, Sybase, Oracle, CI/CD, Containerization, AI tooling, Software testing
1mo
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Lead .Net Platform Engineer (Payments Ingestion) - Senior Vice President
New Castle or Tampa
$156k-$234k/yr HybridFull Time
Citi
CitiNYSE: C: Providing global banking, investment, and wealth management services.
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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.NET Application Support Engineer
Ashburn or Harrisburg or Pennsauken
OnsiteFull Time
TransCore
TransCore: Provides electronic tolling and intelligent traffic management solutions.
3+ YOE3+ years supporting or developing .NET applications, strong C# debugging, PowerShell scripting, IIS management, T-SQL/MS SQL proficiency, and experience with monitoring and automation; bachelor’s degree or equivalent.
C#, .NET Core, .NET Framework, ASP.NET MVC, Web API, PowerShell, IIS, T-SQL, Microsoft SQL Server, Event Viewer, Serilog, Log4Net, Azure, Google, AWS, Docker, Azure DevOps, Jenkins, GitHub Actions, Jira
1w
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Principal Specialist - IT ETRM Systems Dev
Newtown Square or Houston or Dallas
OnsiteFull Time
Energy Transfer
Energy TransferNYSE: ET: Operates energy infrastructure including pipelines, storage, and terminals.
10+ YOEBachelor's in IT, extensive RightAngle support/development experience, strong Microsoft SQL Server/T-SQL/SSIS and C#/.NET skills, commodity trading knowledge, leadership and communication skills.
RightAngle, Microsoft SQL Server, T-SQL, SSIS, C#, .NET
1mo
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Software Development Manager
Greenville or Atlanta or Raleigh or Charlotte or Boston or Chicago or Kansas City or Cleveland or Austin or Dallas or Houston or Minneapolis or Indianapolis or Charleston or Birmingham or Tampa or Washington or Las Vegas or Los Angeles or Miami or Milwaukee or Morristown or Philadelphia or Pittsburgh or Phoenix
$133k-$210k/yr OnsiteFull Time
Ogletree Deakins
Ogletree Deakins: Provides legal representation for management in employment matters.
10+ YOELead and mentor software engineering teams; 10+ years development experience; Bachelor's degree required; strong background in C#, .NET Core, ASP.NET MVC, Web API, SQL Server, Azure; Agile leadership; Visual Studio and Azure DevOps proficiency.
C#, .NET Core, ASP.NET MVC, Web API, Blazor, Microsoft SQL Server, REST, Visual Studio, SQL Server Management Studio, Azure DevOps, Git, TFS, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Outlook, Microsoft Teams, Salesforce.com
2mo
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Sr. Full Stack .NET Software Engineer (IT@JH University Information Systems)
Baltimore, Maryland, United States
$86k-$150k/yr RemoteFull Time
Johns Hopkins University
Johns Hopkins University: A private research university providing higher education and clinical healthcare.
6+ YOEBachelor's in a related field and 6+ years related experience; strong Microsoft .NET/C#, SQL, Git, Windows/Linux/Docker skills; experience with web frameworks (Vue.JS), cloud (AWS/Azure), testing, documentation, and mentoring/leading junior staff.
Microsoft .NET, C#, SQL, Git, Gitflow, Microsoft Windows, Linux, Docker, Vue.JS, JavaScript, AWS, Azure, XML, XSL, JSON, HTML, CSS, SQL Reporting Service, .NET Framework, .NET Core, ASP.NET, ASP.NET MVC, Web API, VB.NET, T-SQL, AI coding agents
3w
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.NET Full Stack Developer (Onsite Hybrid)
King of Prussia, Pennsylvania, United States
$97k-$145k/yr HybridFull Time
NTT DATA
NTT DATATokyo Stock Exchange: 9613: Global provider of business and technology consulting and IT services.
7+ YOE7+ years experience building .NET full‑stack applications, strong SQL/T‑SQL skills, microservices and containerization experience, Angular frontend, TDD and clean code practices.
C#, ASP .Net Core 8, SQL Server, PostgreSQL, .NET Framework, MVC, Web API 2.0, Angular, HTML, Bootstrap, jQuery, CSS3, Docker, Kubernetes, T-SQL
1w
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Senior Automation Controls Engineer – R&D / Material Handling
Baltimore or Washington
$75k-$192k/yr OnsiteFull Time
Laitram
Laitram: Global manufacturer of conveyor, automation, and access solutions.
7+ YOEBachelor's degree in engineering, 7+ years controls/automation experience, strong PLC/HMI development and commissioning skills, machine safety knowledge, electrical schematic support, and travel ~10–20%.
Rockwell Studio 5000, Siemens TIA Portal, Beckhoff/TwinCAT, AutoCAD Electrical, MATLAB, C++, Python, C#, .NET
1mo
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Director of Enterprise Applications
Philadelphia, Pennsylvania, United States
OnsiteFull Time
Unique Industries
Unique Industries: Global manufacturer and distributor of party supplies and decorations.
3+ YOE5+ MgmtBachelor's in IT/CS (or equivalent experience); 5+ years managing IT staff; 3+ years JD Edwards One World experience; strong ERP, Microsoft Visual Studio, Microsoft SQL Server, .NET skills; PMP preferred.
ERP, Microsoft Visual Studio, Microsoft SQL Server, JD Edwards One World, .NET framework, Java, PHP, HTML
2d
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Tax Technology Automation Manager
Atlanta or Charlotte or Fort Lauderdale or Nashville or Raleigh or Baltimore or Columbia or San Francisco or Los Angeles or Boston or New York or Chicago
$145k-$176k/yr HybridFull Time
Aprio
Aprio: Provides business advisory, accounting, and tax services globally.
5+ YOE5+ years experience; familiarity with tax software, Excel, APIs, databases, project documentation, and project management fundamentals; strong analytical and communication skills.
Practice Engine, CCH Axcess Tax, GoSystem Tax, UltraTax CS, Lacerte Tax, CaseWare, CCH Engagement, Workpapers CS, Microsoft Excel, Power BI, DAX, SSIS, Microsoft Office 365, Microsoft SharePoint, Microsoft Power Platform, Python, Visual Basic, Java, Objective-C, C, .NET, APIs
2mo
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Lead Site Reliability Engineer
Wilmington, Delaware, United States
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years software engineering experience; expertise in reliability, observability, CI/CD, containers; strong programming skills; able to lead incidents and mentor engineers.
Python, Java, .NET, Docker, Kubernetes, Terraform, Grafana, Dynatrace, Prometheus, Datadog, Splunk, Jenkins, GitLab
1w
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Principal Specialist - IT ETRM Systems Dev
Newtown Square or Dallas or Houston
OnsiteFull Time
Energy Transfer
Energy TransferNYSE: ET: Transports and stores natural gas and crude oil.
10+ YOEBachelor's in IT, extensive RightAngle experience, strong T-SQL/SQL Server/SSIS/C# skills, 10+ years ETRM development/support, leadership, analytic and communication skills, commodity trading knowledge.
RightAngle, SQL Server, T-SQL, SSIS, C#, .NET