C# Developer Jobs in Washington

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UI Developer (.Net C#, APIs) Remote

Gainwell Technologies LLC

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Remote or Houston, Texas, USA

Full-time

Be part of a team that unleashes the power of leading-edge technologies to help improve the health and well-being of those most vulnerable in our country and communities. Working at Gainwell carries its rewards. You'll have an incredible opportunity to grow your career in a company that values work flexibility, learning, and career development. You'll add to your technical credentials and certifications while enjoying a generous, flexible vacation policy and educational assistance. We also have
Posted 26 days ago | Updated 9 hours ago

Sr Duck Creek Developer (Field Engineer)

Precision System Design Inc.

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Remote

Contract

Our direct Fortune 100 client is looking for a C# Developer for a contract role that goes through the end of the year. The ideal candidate will have experience with Duck Creek at the C# level, along with the MS Stack- SQL Server, Visual Studio, Azure DevOps A major effort on this assignment will be migrating Duck Creek repositories from TFS to Git. About 70% of the work will be C# development and 30% will be Duck Creek work. This is a fully remote position but candidates must live and work with
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Posted 27 days ago | Updated 3 hours ago

Homes.com - Senior Software Engineer (C#/.NET)

Costar Group

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Arlington, Virginia, USA

Full-time

Homes.com - Senior Software Engineer (C#/.NET) Job Description CoStar Group (NASDAQ: CSGP) is a leading global provider of commercial and residential real estate information, analytics, and online marketplaces. Included in the S&P 500 Index and the NASDAQ 100, CoStar Group is on a mission to digitize the world's real estate, empowering all people to discover properties, insights and connections that improve their businesses and lives. Homes.com is already one of the fastest growing real estat
Posted 5 days ago | Updated 1 hour ago

Application Security Engineer - Veracode

The Squires Group, Inc

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Arlington, Virginia, USA

Full-time

Overview The Squires Group, Inc. is hiring for an Application Security Engineer with deep experience utilizing Veracode to enhance our client's application security team. In this role, you will collaborate with the client and application team to ensure a strong and resilient security posture for high-profile applications. Per our client contract, candidates must be clearable to the Secret level. If you currently have an Active Secret Clearance, you're a step ahead. Responsibilities Perform appl
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Posted 12 days ago | Updated 11 hours ago

C#/Javascript/SQL Server Fullstack Developer

Case Interactive

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Remote

Full-time

Title: Software Application Developer Job Description: We are seeking a talented and motivated Software Developer to join our fully remote team. This role involves working with our proprietary full-stack in-house development platform and low-code language to build and maintain database-driven web applications. While experience with our in-house platform and language is not expected, candidates should have a strong background in UI development and database architecture. As part of an agile develo
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Posted 60+ days ago | Updated 3 days ago

Software Engineer (C#), Level 1

Parsons Services Company

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Maryland, USA

Full-time

In a world of possibilities, pursue one with endless opportunities. Imagine Next! When it comes to what you want in your career, if you can imagine it, you can do it at Parsons. Imagine a career working with exceptional people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We've got what you're looking for. Job Description: Parsons is looking for a Software Engineer (C#), Level 1 tosupport efforts based in
Posted 60+ days ago | Updated 1 hour 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 31 days ago | Updated 3 hours 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 13 days 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 26 days ago | Updated 9 hours ago

QA Automation Engineer (C#, Selenium)

People Force Consulting Inc

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Remote

Contract

Role - Automation Tester Duration: This is 3 months Contract to Hire Location Fully Remote Key Skills: C#, Selenium, Advanced Automation Consult with client, understand the QA ecosystem and define automation charter and frameworks.Design, build and maintain automation frameworks.Enable the automation teams to design, develop and maintain automation scripts, automate API testing based on project needs and integrate the automation suite in the CI Pipeline.Should handle client and team with resp
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Posted 33 days ago | Updated 9 hours ago

Solutions Architect - .Net, C#, AWS

Perficient

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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 39 days ago | Updated 7 hours ago

Applications Development Sr Programmer Analyst - C# .Net- AVP - Houston (Hybrid)

Citi

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Remote or Houston, Texas, USA

Full-time

About the Role: The role is for an AVP analyst / developer within the Commodities Technology Front Office Risk team in Houston.Citi are now one of the largest Commodities players in the banking sector, having grown rapidly over the past five years and we have ambitious plans to further develop our Commodities platform. Our technology challenges are therefore fast-moving and varied. The team develops and supports a strategic platform which calculates, manages and stores intra-day and EOD risk dat
Posted 60+ days ago | Updated 1 hour 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 moments 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 moments ago

Early in Career Windows Software Engineer (C++, C#)

Rockwell Automation

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Remote or Phoenix, Arizona, USA

Full-time

Rockwell Automation is a global technology leader focused on helping the world's manufacturers be more productive, sustainable, and agile. With more than 28,000 employees who make the world better every day, we know we have something special. Behind our customers - amazing companies that help feed the world, provide life-saving medicine on a global scale, and focus on clean water and green mobility - our people are energized problem solvers that take pride in how the work we do changes the world
Posted 8 days ago | Updated 1 hour ago

Senior Software Engineering (RPA - Automation Anywhere 360 & C# .NET)

Mastercard

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Remote or O'Fallon, Missouri, USA

Full-time

Our Purpose Mastercard powers economies and empowers people in 200+ countries and territories worldwide. Together with our customers, we're helping build a sustainable economy where everyone can prosper. We support a wide range of digital payments choices, making transactions secure, simple, smart and accessible. Our technology and innovation, partnerships and networks combine to deliver a unique set of products and services that help people, businesses and governments realize their greatest po
Posted 60+ days ago | Updated 1 hour ago

Senior Software Engineer (.NET & C#)

Accenture LLP

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Washington, District of Columbia, USA

Full-time

At Accenture Federal Services, nothing matters more than helping the US federal government make the nation stronger and safer and life better for people. Our 13,000+ people are united in a shared purpose to pursue the limitless potential of technology and ingenuity for clients across defense, national security, public safety, civilian, and military health organizations. Join Accenture Federal Services, a technology company and part of global Accenture, to do work that matters in a collaborative
Posted 48 days ago | Updated 1 hour ago

Hedge Fund Software C# FIX/Order Management Software Engineer

Case Interactive

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Remote

Full-time

Senior Software Developer COMPANY Fund Solutions COMPANY is a Fin Tech company headquartered in New York, with offices also in Belfast, Shanghai, and Sydney. COMPANY develops financial software and provides product integration and implementation services for asset managers. COMPANYs products are used by portfolio managers, traders, research analysts, risk managers, accountants and operations. We look for people with a passion for finance and an understanding of how to use technology to solve bu
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Posted 60+ days ago | Updated 3 days ago