44 csharp jobs at 29 companies in Clayton, DE

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Software Engineer I, AI
Grand Rapids or Los Angeles or Washington or Troy or New York or Houston or Chicago or Owings Mills or Columbia or Richmond or Memphis or Raleigh or Boston or San Jose or San Francisco or Austin or Kalamazoo or Spokane or Denver or Fort Worth or Atlanta or Orlando or Dallas or Wilmington or Phoenix or San Antonio or Milwaukee or Madison or McLean or Huntsville or Woodbridge or Stamford or Miami or Philadelphia or Charlotte or Greenville or West Palm Beach or Costa Mesa or St. Louis or Fort Lauderdale or Seattle or Rosemont or Pittsburgh or Tulsa or Cincinnati or Cleveland or Columbus or Akron or Cherry Hill or Minneapolis or Anchorage or Salt Lake City or Norfolk or Jacksonville or Boulder or Nashville or Oak Brook or Las Vegas or Indianapolis or San Diego or Baton Rouge or Jackson or Tallahassee or Tampa or Omaha
$85k-$100k/yr OnsiteFull Time
BDO USA
BDO USA: Provides accounting, tax, and business advisory services to organizations.
1+ YOE1+ years software engineering experience; experience with AI/ML and integrating large language models preferred. Familiarity with databases/SQL, debugging and monitoring, Microsoft development stack (.Net, C#, Azure) preferred; HS required, bachelor\u0002s preferred.
Microsoft Visual Studio, VS Code, Microsoft Azure DevOps, GitHub, Microsoft SQL Server, Azure SQL, Microsoft Entity Framework, .Net, C#, Azure, SQL
2w
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Test Automation Engineer
Broomall, Pennsylvania, United States
$100k-$118k/yr RemoteFull Time
Xactus
Xactus: Provides verification and credit reporting for mortgage lenders.
3+ YOE3+ years QA experience with 2+ years test automation; hands-on automation in TypeScript/JavaScript, C#, or Python; experience with Selenium, Playwright, Postman, CI/CD, and observability tools; Bachelor's degree or equivalent experience preferred.
Selenium, Playwright, Postman, Datadog, TypeScript, JavaScript, C#, Python
2mo
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Digital Transformation Architect, Senior Manager
McLean or Annapolis Junction or Washington
$163k-$303k/yr RemoteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
10+ YOE3+ MgmtSenior-level architect with 10+ years CMS analytics, big data, cybersecurity, software engineering, AI/ML; 3+ years leading complex CMS proposals; bachelor’s degree; strong leadership and collaboration skills.
Java, Python, C#, AWS, Azure, GCP, Jenkins, Docker, Kubernetes, SonarQube, SQL, ETL/ELT, Streaming, Orchestration, Integration
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Associate Software Developer
West Chester, Pennsylvania, United States
HybridFull Time
Venerable
Venerable: Manages and optimizes legacy variable annuity business blocks.
1+ YOE1+ years professional experience in AI/ML and micro-service systems; proficiency with AWS services, Python, C#, ML libraries, and enterprise software development practices.
SageMaker, Lambda, EC2, S3, EFS, SNS, SQS, EventBridge, Kinesis, Aurora, DynamoDB, RDS Proxy, Glue, Athena, Redshift, AWS Step Functions, AWS CodePipeline, Python, TensorFlow, PyTorch, scikit-learn, C#, PowerShell, SQL, JavaScript, UML, Docker, Git, GitHub, Jenkins, Bamboo, TeamCity, SpecFlow, Cucumber, Protobufs, Thrift, Avro, JSON, ODBC, Kafka, Angular, React
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Senior DevSecOps Specialist/Agile
Annapolis Junction, Maryland, United States
OnsiteFull Time
Ascension Federal Services
Ascension Federal Services: A that provides technology and software development services.
15+ YOESenior DevSecOps with 15+ years in software development; strong Agile; Java or C#; TS/SCI with polygraph preferred; Bachelor's degree.
Java, C#, Git, Jenkins, Docker, Kubernetes, SQL
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AI Solutions Architect
Kennett Square or Pennsylvania
HybridFull Time
Chatham Financial
Chatham Financial: An independent capital markets advisor delivering integrated advice and technology to help clients manage financial risk.
5+ YOEBachelor's in CS/IS/Engineering or equivalent, 5+ years in solutions/enterprise architecture, experience with Azure cloud services, Python, C#/.NET, TypeScript/React, OAuth2/OIDC, LLM integration patterns, CI/CD (GitHub Actions), and strong communication.
Onyx, Python, FastAPI, Azure, App Service, Functions, Cosmos DB, Blob Storage, C#, .NET, PostgreSQL, TypeScript, React, OAuth 2.0, OpenID Connect (OIDC), GitHub Actions, CI/CD, large language model (LLM)
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Software Developer/Data Scientist
Philadelphia, Pennsylvania, United States
$79k-$123k/yr HybridFull Time
Noblis
Noblis: Nonprofit science, technology, and strategy firm supporting government missions.
3+ YOEBachelor's +5 years or Master's +3 years; strong knowledge of C#, javascript, aspx, sql, Python, R, C/C++, xml; experience with Matplotlib, Numpy, Pandas, PGMpy, Scikit-learn, SciPy; Git and modern development practices; machine learning and data visualization skills; US citizen able to obtain Secret clearance.
C#, javascript, aspx, sql, Python, R, C/C++, xml, Git, Matplotlib, Numpy, Pandas, PGMpy, Scikit-learn, SciPy, PowerBI, Oracle, NAVLOGTD, LLMs, Agile
3mo
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Reverse Engineer Level 2
Fort Meade, Maryland, United States
$150k-$180k/yr OnsiteFull Time
Markon
Markon: Provides professional services and management consulting for government agencies.
5+ YOE5–8 years in reverse engineering or related field; Bachelor's degree in CS/Engineering or related field; experience with assembly, C/C++, C#, Java, Perl, Python; strong reverse engineering and binary analysis; OS internals analysis; familiarity with reverse engineering tools; kernel-level programming or forensics; ability to document and present fi...
IDA Pro, Ghidra, Binary Ninja, Assembly, C, C++, C#, Java, Perl, Python
2mo
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Control Systems Engineer
Newark, Delaware, United States
HybridFull Time
GrayMatter
GrayMatter: Industrial technology solutions and automation engineering services.
5+ YOEBachelor’s degree in EE/EET/ME/MET/ChemE or related field; 5 years controls experience; Rockwell PLCs; industrial programming languages; electrical schematics; 20-30% travel.
Rockwell PLCs, Modicon PLCs, Rockwell HMIs, InTouch HMIs, AutoCAD, Emerson PLCs, GE PLCs, GE HMIs, Siemens PLCs, Ignition HMI, Wonderware System Platform, C++, C#, Python, MS SQL Server, Historian, Proficy
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Business Process Red Team Operator
Ohio or Columbus or Wilmington or New York or Plano or Jersey City
OnsiteFull Time
JPMorgan Chase
JPMorgan ChaseNYSE: JPM: Global financial services firm providing banking and investment solutions.
5+ YOE5+ years in cybersecurity or resiliency; experience with offensive security, social engineering, penetration testing, business-process assessments; knowledge of networking, OSes, attack methodologies, assessment frameworks (OWASP/NIST); strong communication and report-writing.
OWASP Top Ten, NIST Cybersecurity Framework, Cobalt Strike, Metasploit, Nmap, Nessus, Burp Suite, Ruby, Python, Perl, C, C++, C#, Java, IDS/IPS, DLP, web proxies, firewalls
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Automation Engineer
West Chester, Pennsylvania, United States
OnsiteFull Time
CTDI: Repairs and manages logistics for telecommunications and electronic equipment.
0+ YOE0-4 years programming experience (Structured Text or C#/C++/Embedded C) for PLCs and motion controllers; experience with machine-control APIs; bachelor’s degree in an engineering or computer/robotics field required.
PLC, motion controllers, Structured Text (ST), C#, C++, Embedded C, Ladder Logic, Raspberry Pi, Arduino, machine-control APIs
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Lead Software Engineer - C# / .Net
Wilmington, Delaware, United States
$128k-$214k/yr HybridFull Time
M&T Bank
M&T BankNYSE: MTB: Provides retail, commercial, and wealth management banking services.
5+ YOE5+ years systems analysis/application development (or 7+ with associate). Expert C#/.NET experience, RESTful API and service architecture, DevOps/CI/CD familiarity, exposure to Angular, strong analytical and communication skills.
C#, .NET, RESTful APIs, Angular, CI/CD, DevOps, SDLC, Loan IQ, Finastra
3mo
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Mid Software Engineer
Aberdeen, Maryland, United States
$104k-$181k/yr OnsiteFull Time
Parsons
ParsonsNYSE: PSN: Provides engineering and technology services for infrastructure and defense.
5+ YOEBachelor's in CS or related field with 5 years experience, or 8 years experience; Python, C++, Java, C#; software development lifecycle; US citizenship and SECRET clearance.
Python, C++, Java, C#, Git, CI/CD, Docker
1w
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Principal Specialist - IT ETRM Systems Dev
Houston or Dallas or Newtown Square
OnsiteFull Time
Energy Transfer
Energy TransferNYSE: ET: Transports and stores natural gas and crude oil.
10+ YOEBachelor's degree in IT, experience supporting RightAngle, strong SQL/ T-SQL and stored-procedure skills, SSIS and C#/.NET development, commodity trading/Risk Management knowledge, strong communication and project skills.
RightAngle, SQL Server, T-SQL, SSIS, C#, .NET
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SENIOR SOFTWARE DEVELOPER/ENGINEER (CLOUD/CYBER)
Huntsville or Aberdeen or Colorado Springs or Crestview or Tupelo
OnsiteFull Time
Sentry Construction
Sentry Construction: Provides general contracting and comprehensive property maintenance services.
7+ YOEBS in CS/Software Eng or equivalent, 7+ years software development experience, DoD Top Secret/SCI eligibility, experience with Python, containers, AI/LLMs, databases, Linux, AWS, and Agile/Scrum.
LLMs, Ollama, LM Studio, Python, C#, Go Lang, React, JavaScript, HTML, CSS, Git, Docker, Bash, TensorFlow, PyTorch, SQL, MongoDB, PostgreSQL, Redis, Linux, AWS, RESTful API, Agile/Scrum
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Senior Product Security Engineer
Santa Clara or Newark or Marlborough
$107k-$172k/yr HybridFull Time
Hologic
HologicNASDAQ: HOLX: Develops medical technology for women's healthcare and diagnostics.
4+ YOEMaster's or Bachelor's in CS/related, 4+ years in computer/network security, cloud platforms, Windows/Linux, secure development, threat modeling, scripting (PowerShell/Python/C#/C++), and security tooling (SAST/SCA/DAST).
PowerShell, Python, C#, C++, SAST, SCA, DAST, Azure, Microsoft Windows, Linux, CI/CD, DevSecOps, STRIDE, Threat Modeling, OWASP Top 10, CWE
3w
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2027 Engineering Corporate Intern Program - Product Development Track
Mossville or Brooklyn Park or Decatur or Fort Worth or Lafayette or Pontiac or Kennett Square or Pittsburgh or El Reno or Schertz or Rapid City or Griffin or Denison or Houston or East Peoria or Clayton or West Fargo or Alpharetta or Peoria
$25-$43/hr OnsiteFull Time, Internship
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
Full-time 12-week, 40-hr/wk internship for students pursuing an ABET-accredited engineering degree; 3.0+ GPA, 24+ semester hours completed, ability to relocate/commute, engineering fundamentals and analytical skills.
ANSYS, MATLAB, Simulink, C, C#, C++, Python, Visual Basic, CFD, FEA, HIL, SIL
2mo
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Software Applications Engineer
Aberdeen Proving Ground, Maryland, United States
$115k-$130k/yr HybridFull Time
Entarian
Entarian: Provides mission-critical engineering and technology solutions for government agencies.
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
1mo
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Senior Software Engineer
Wilmington or London or Amsterdam
HybridFull Time
CSC
CSC: Provides global business administration and compliance solutions.
Expertise with C# and .NET Core, Blazor, Entity Framework Core, SQL Server, Azure Functions, Playwright, JavaScript/TypeScript, and experience building AI-enabled applications and AI-augmented SDLC practices.
C#, .NET Core, Blazor Server, Blazor WebAssembly, GitHub Copilot, Cursor, Claude Code, Entity Framework Core, SQL Server, Azure Functions, Bootstrap, Playwright, JavaScript, TypeScript, Azure Pipelines, Git, MediatR, Clean Architecture, Fluxor, Polly, Artillery, JMeter, K6, Locust, Docker, Kubernetes, Azure AI Foundry, Azure OpenAI Service
3mo
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1650 - Software Developer
Belcamp, Maryland, United States
$83k-$140k/yr OnsiteFull Time
Sigma Defense: Develops tactical communications and intelligence systems for defense.
10+ YOE10+ years in software development; 5+ years DoD software support; strong requirements analysis, architecture, and coding skills; Java, Python, C#, and JavaScript; ability to document software; U.S. citizen; Secret security clearance or higher; Bachelor's Science degree.
Java, Python, C#, JavaScript