C# Jobs in Washington

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PowerBuilder Developer (C++/C#/PowerBuilder)

VRTek Consulting

•

Columbia, Maryland, USA

Contract

Justification: Needed to support legacy systems, modernization efforts, and critical transition areas involving PowerBuilder and backend logic. (SFMTA) Experience Level: 5-10 years Job Responsibilities: Maintain, enhance, and support existing PowerBuilder applications that are critical to transit agency operations.Analyze, troubleshoot, and resolve application defects and performance issues in legacy systems.Collaborate with business analysts, end users, and cross-functional teams to gather req
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Posted 1 day ago

Senior Quality Automation Engineer with Strong C#

Sriven Systems Inc.

•

Arlington, Virginia, USA

Contract, Third Party

Position Responsibilities: As a part of Services, you will ensure quality for revolutionary products that advance how businesses all over the world seize the most value from their data. As a Senior Software Quality Engineer, you will: Ensure that calculations are correct in all circumstances Lead testing of large, complex, high-quality features with minimal oversight Manage and coordinate large testing and release efforts with internal stakeholders Develop, maintain, and enhance automated testin
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Posted moments ago

Solutions Architect - .Net, C#, AWS

Perficient

•

Fairfax, Virginia, USA

Full-time

We currently have a career opportunity for a Solutions Architect to join our team. This role is REMOTE. Job Overview: As a Solutions Architect, you will play a pivotal role in designing and implementing enterprise-grade digital process automation solutions using the Camunda platform. This role focuses on leveraging BPMN, DMN, and process orchestration capabilities to streamline and optimize business workflows across diverse industries. You will be responsible for guiding development teams in
Posted 40 days ago | Updated 23 hours ago

C++/C# Developer (Application Integration Support)

ITC Infotech (USA), Inc

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Columbia, Maryland, USA

Full-time

Greetings from ITC Infotech! Role - C++/C# Developer (Application Integration Support) Location - Columbia, MD Start Date: Immediate Position Type: Full Time + Benefits (medical, 401K, PTO etc) Role Summary: General development support for application-level integrations, bug fixes, and system enhancements across all three initiatives. Job Description: Key Responsibilities: Develop, maintain, and enhance application code using C++ and C# to support ongoing integration, maintenance, and enhancemen
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Posted 4 days ago

Scientific Software Developer C#

Kriaanet Inc

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Bethesda, Maryland, USA

Full-time

Job Title: Software Developer C#Location: West Bethesda, MDDuration: Long TermClearance: Active SecretAbout The Role:This is a Scientific Software development position on-site at our customer site Carderock in West Bethesda, MD.This position will be responsible for the following:Maintenance, development, and testing of a large-scale C# application that performs acoustic modeling of large scale structures.Daily interaction with USN customers to review priorities, development status, and emergent
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Posted 14 days ago | Updated 14 days ago

Senior C# Full Stack Developer

Precision System Design Inc.

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Remote

Contract

Our Fortune 100 direct client is hiring for experienced Senior Full Stack Developers to work on large-scale IT projects. You would be designing and coding in a variety of technologies supporting and developing an Vue/Angular UI application, with C# back-end microservices. The ideal candidate will have strong C# development experience, has worked with front-end technologies such as angular, and back-end experience with SQL Server. This role can be done fully remotely following an EST work schedul
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Posted 6 hours ago

C# Developer

Kforce Technology Staffing

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Remote or Boca Raton, Florida, USA

Contract

RESPONSIBILITIES: Kforce has a client that is seeking a C# Developer in Boca Raton, FL. Key Responsibilities: * Architect, develop, and maintain a modern full-stack multi-tenant SaaS platform using .NET 9, C#, and Azure * Apply Domain-Driven Design () and clean architecture principles to support scalability, maintainability, and long-term growth * Build intuitive and responsive front ends using Telerik UI for ASP.NET Core, Bootstrap, Razor Pages, HTML, jQuery, and JavaScript * Design and implem
Posted 21 hours ago | Updated moments ago

MES Developer with .net and C#

Indotronix International Corp

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Remote

Contract

Role: MES Developer Location: Remote Pay Rate: $77/Hr on W2 Duration: 6+ Months Location: Remote, required to be within 1-2 hour commutable distance in one of the following client office locations: - Corning, NY - Charlotte, NC - Vineland, NJ - Phoenix, AZ - Hemlock, MI - Hickory, NC - Blacksburg, VA - Keller, TX - Boston, MAKey Responsibilities: Strategic view and understanding of Siemens Opcenter/Camstar Execution to lead design and development efforts across client. Design, implement,
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Posted 17 hours ago

C# Developer

SAIC

•

Chantilly, Virginia, USA

Full-time

Job ID: 2505146 Location: CHANTILLY, VA, US Date Posted: 2025-04-29 Category: Software Subcategory: SW Engineer Schedule: Full-time Shift: Day Job Travel: No Minimum Clearance Required: Secret Clearance Level Must Be Able to Obtain: TS/SCI with Poly Potential for Remote Work: No Description SAIC is currently looking to hire a C# Developer to join our team located in Chantilly, VA! Basic Qualifications: Bachelor's Degree in Computer Science, Information Systems, Engineering or related
Posted 60+ days ago | Updated 3 hours ago

C# Dot Net Developer with Prime Brokerage & Capital Market

Magnum Technologies, Inc.

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Remote

Full-time

JOB DESCRIPTION: Job Title: Senior .NET Developer with Investment Banking Systems Experience: 7+ years Location: NYC(Remote) C2H/ W2 only Overview: We are seeking a Senior .NET Developer consultant with strong expertise in Investment Banking Systems for a Contract-to-Hire (C2H) position. The ideal candidate must have hands-on experience in Stock Loan business functions and familiarity with systems like Global One, Loanet, and EquiLend interfaces. Strong technical proficiency is required in C#/.N
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Posted moments ago

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's)

ConsultNet, LLC

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Remote or Dallas, Texas, USA

Full-time

Sr. C#/.NET Integration Engineer (Apache NiFi/FHIR API's) Remote (MST, Central or Eastern Time Zone) 6-12-month Contract or Contract to Hire Pay Rate: 75-80/hr A rapidly growing technology-driven organization focused on streamlining how sensitive records are managed, processed, and shared. They specialize in transforming manual, compliance-heavy workflows into secure, efficient digital solutions-helping clients improve access, accuracy, and overall operational performance across regulated env
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Posted 1 day ago | Updated 5 hours ago

Senior Quality Engineer

Prospect Infosystem Inc

•

Arlington, Virginia, USA

Full-time, Part-time, Third Party, Contract

Top focuses: Automation Tester who also has experience with C# Development Local to Arlington, VA (onsite 2 days/week - will look at non-local who will relocate, but preference is local) Willing to complete the Glider technical assessment ASAP
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Posted 1 day ago | Updated 1 hour ago

Sr Developer(C#, .NET and exp in Facets)

Analytics Solutions

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Remote

Contract

Role Type: Sr Developer Duration: 6 months Telecommute: Yes Description: Independently write well designed testable efficient code to support varied and highly complex IT solutions Required skills: 10+ years of experience in C#, .NET 10+ years of experience in Sql Development 10+ years of experience in Facets and good knowledge on Facets Data Model Experience in database design & functional design Proficient understanding of code versioning tools such as Git Solid knowledge of software ar
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Posted 4 days ago

Gameplay Engineer - C#

SGS Consulting

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Remote

Contract

Responsibilities: Create NPC tools to demonstrate NPC behaviors in Open WorldsCreate both simple and complex examples that can be used both for creator samples and for AI training.Requirements: BS in Computer Science/Engineering or equivalent industry experience.3-5 years game development experience.Proficiency in C#Ability to work independently with minimal outside supervision.Ability to multi-task, prioritize and be flexible able to adapt plans and react to change in a diverse, fast-paced, and
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Posted 32 days ago | Updated 19 hours ago

C# Developer

Headway Tek Inc

•

US

Full-time, Part-time, Contract, Third Party

1.C# Dev -AKS & Azure Requirement: C#, Asp.Net Azure Kubernetes Services (AKS) or Kubernetes Azure Cosmos DB REST API/ Microservices MS Experience Knowledge of Al Other requirements: Communication: Good Onsite/Offshore Co- ordination Passionate about Learning Should be able to work in couple of overlap PST hours Should work in PST time zone
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Posted 11 days ago | Updated moments ago

Senior C#/React Native Mobile Engineer/Entertainment/Remote

Motion Recruitment Partners, LLC

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Remote or Philadelphia, Pennsylvania, USA

Full-time

A large company in the entertainment industry is hiring for a senior .NET/React Native developer. The firm needs someone with a strong background in .NET and React Native and has a background in entertainment and streaming to do full stack development on a customer facing product used by thousands of people daily. *This role is remote, but requires that you work EST hours* The company's main focus will be expanding, improving, and upgrading their customer facing platform. They are looking to bri
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Posted 27 days ago | Updated 1 hour ago

C#.NET API Developer

TriCom Technical Services

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Remote

Contract

C#.NET API Developer Summary This C#.NET API Developer will focus on developing financial applications, creating workflows, and API integration. Responsibilities Support the company's financial systems.Develop Web-based solutions for internal customers business needs using C#/MVC.NET and MS SQL.Develop methods and processes to interact with various Cloud-based APIs using SOAP and RESTful APIs.Develop and maintain data synchronization between various systems within and between the company and o
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Posted 8 days ago

.Net, C#, C++ Lead Engineer

Photon

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Remote

Contract

Greetings everyone, I hope you are staying safe. We are hiring a .Net, C#, C++ Lead Engineer to join our Digital Engineering team. Who are we? For the past 20 years, we have powered many Digital Experiences for the Fortune 500. Since 1999, we have grown from a few people to more than 4000 team members across the globe that are engaged in various Digital Modernization. For a brief 1 minute video about us, you can check ;/u> Job Title: .Net, C#, C++ Lead Engineer Location: Remote Job Description:
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Posted 42 days ago | Updated 14 days ago

C# Software Developer

Zachary Piper Solutions, LLC

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Remote

Full-time

Piper Companies is seeking a C# Software Developer to join a leading shipping and logistics organization. The C# Software Developer will work on backend development, automate workflows, and assist in designing cloud-based applications, with an emphasis on data. Responsibilities of the C# Software Developer include: Lead the design, development, testing, and deployment of .NET C# applications. Architect complex data structures for rate audits of parcel carrier invoice files. Design, develop, an
Posted 40 days ago | Updated 15 days ago

Software Engineer II (Python or C#/.Net) Remote

ConsultNet, LLC

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Remote or Birmingham, Alabama, USA

Full-time

Software Engineer II (Python or C#/.Net) Remote (EST or CST) 8 month contract Pay Rate: $50.00 to $52.00 per hr. We're looking for a hands-on Software Engineer II to support a major migration from a legacy system to a modern enterprise data platform. This role is part of an ongoing transformation project that began in early 2025. You'll help accelerate development by contributing to backend services and high-performance data pipelines in a collaborative Agile environment. Key Responsibilities De
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Posted 41 days ago | Updated 4 hours ago