Get the job you really want.

Top Senior Level C# Jobs in Washington DC,

271+ Job Results
11 Days Ago
Washington, DC, USA
Remote
Hybrid
1,810 Employees
174K-232K Annually
Senior level
1,810 Employees
174K-232K Annually
Senior level
Cloud • Fintech • Information Technology • Machine Learning • Software • App development • Generative AI
The Principal Software Engineer will design, develop, and optimize BlackLine's cloud-based backend services, while mentoring junior engineers. This role involves collaborating with teams to deliver enterprise-class solutions, researching new technologies, and ensuring high-quality releases meet business strategies and timelines.
Top Benefits:
401-K
401-K Matching
Child Care Benefits
+61 More
7 Hours Ago
United States
Remote
10,000 Employees
135K-210K Annually
Senior level
10,000 Employees
135K-210K Annually
Senior level
Cloud • Information Technology • Sales • Security • Cybersecurity
The role involves leading backend engineering efforts for large-scale applications, building services for authentication and authorization, improving architecture, mentoring team members, and engaging with the open source community. The engineer will work with cloud-based systems and ensure the scalability and performance of backend services.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+47 More
11 Hours Ago
United States
Remote
1,200 Employees
85K-170K Annually
Senior level
1,200 Employees
85K-170K Annually
Senior level
Cloud • Productivity • Social Impact • Software • Analytics
The Senior Software Engineer will design and implement AI and cloud-first solutions on AWS, mentor team members, engage in cross-functional collaboration, and support the development and maintenance of scalable data applications for nonprofit clients.
Top Benefits:
401-K
401-K Matching
Company Equity
+39 More
11 Hours Ago
United States
Remote
1,200 Employees
95K-180K Annually
Senior level
1,200 Employees
95K-180K Annually
Senior level
Cloud • Productivity • Social Impact • Software • Analytics
Lead a team of engineers to develop large-scale data applications, promoting AI and cloud technology. Collaborate across teams to create innovative solutions, ensure data-driven decision-making, and maintain high-quality standards in software development.
Top Benefits:
401-K
401-K Matching
Company Equity
+39 More
15 Hours Ago
United States
Remote
1,200 Employees
95K-180K Annually
Senior level
1,200 Employees
95K-180K Annually
Senior level
Cloud • Productivity • Social Impact • Software • Analytics
As a Lead Software Engineer at Bonterra, you will lead and mentor a high-performing team, collaborate with various engineering teams, champion AI technologies and cloud solutions, create automated test suites, support feature development, and promote data-driven decision-making to help nonprofits and NGOs maximize their impact.
Top Benefits:
401-K
401-K Matching
Company Equity
+39 More

Featured Jobs

Yesterday
US
Remote
1,420 Employees
Senior level
1,420 Employees
Senior level
Marketing Tech • Social Media • Software • Analytics • Business Intelligence
Sprout Social is hiring an Engineering Manager to lead a dynamic team in building tools for customer automation. The role involves managing back-end software development teams, guiding technical roadmaps, and fostering team growth and development.
Top Benefits:
401-K
401-K Matching
Commuter Benefits
+48 More
2 Days Ago
United States
Remote
400 Employees
140K-175K Annually
Senior level
400 Employees
140K-175K Annually
Senior level
Fintech • Insurance • Machine Learning • Other • Analytics • Automation
As a Senior Backend Engineer, you will lead back-end development initiatives, create and maintain server-side APIs, improve system health, collaborate with product teams, mentor fellow engineers, and enhance operational stability by producing high-quality, modular software.
Top Benefits:
401-K
401-K Matching
Commuter Benefits
+49 More
4 Days Ago
United States
Remote
2,600 Employees
Senior level
2,600 Employees
Senior level
Artificial Intelligence • Fintech • Information Technology • Software • Data Privacy
As a Principal Frontend Engineer, you'll design and implement the architecture of frontend systems, focusing on complex web applications and advanced SPA design. Collaborating with cross-functional teams, you'll tackle challenges in performance optimization, real-time collaboration, and asynchronous software development while ensuring high quality through effective testing and observability systems.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+64 More
5 Days Ago
United States
Remote
2,780 Employees
Senior level
2,780 Employees
Senior level
Cloud • Insurance • Payments • Software • App development • Big Data Analytics
The Senior Software Engineer will participate in the full software development lifecycle for a Commercial Lines insurance software product, focusing on the development of a web-based solution using Agile methodologies, maintaining microservices and RESTful APIs, and mentoring peers while ensuring security and scalability.
Top Benefits:
401-K
401-K Matching
Child Care Benefits
+53 More
6 Days Ago
United States
Remote
299 Employees
200K-250K Annually
Senior level
299 Employees
200K-250K Annually
Senior level
Cloud • Enterprise Web • Software
As a Member of Technical Staff at Chronosphere, you will design and implement enhancements to the metrics API and ingestion pipeline, focusing on distributed systems and data storage challenges. Your role includes collaborating with cross-functional teams, mentoring peers, and optimizing the reliability and performance of the storage engine.
Top Benefits:
401-K
Adoption Assistance
Commuter Benefits
+45 More
8 Days Ago
United States
Remote
2,500 Employees
135K-182K Annually
Senior level
2,500 Employees
135K-182K Annually
Senior level
Fitness • Hardware • Healthtech • Retail • Software
As a Senior Software Engineer at Peloton, you will design, develop, and monitor microservices integrated with our platform and third-party partners. Your role involves writing maintainable code, leading technical discussions, engaging in code reviews, and mentoring junior engineers while contributing to the growth and evolution of the music catalog systems.
Top Benefits:
401-K
401-K Matching
Adoption Assistance
+52 More
8 Days Ago
United States
Remote
Senior level
Senior level
Cloud • Healthtech • Professional Services • Software • Pharmaceutical
The Senior Full Stack Software Engineer will design and develop core modules for the elluminate platform, focusing on highly interactive and data-driven web applications. Responsibilities include participating in the software development lifecycle, ensuring code quality through unit testing and code reviews, and collaborating with team members during the development process.
Top Benefits:
401-K
401-K Matching
Company Outings
+31 More
All Filters
Date Posted
Job Category
Experience
Industry
Company Name
Company Size