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Top Senior C# Jobs in Denver & Boulder, CO

Reposted 13 Hours AgoSaved
Remote
Colorado
148K-204K Annually
Senior level
148K-204K Annually
Senior level
Information Technology • Security • Cybersecurity
The Staff Software Engineer will work on low-level Windows Kernel programming, develop features for security products, and debug real-world problems, impacting millions of endpoints.
Top Skills: AssemblyCC++Windows Os
Reposted YesterdaySaved
Remote
Colorado
Senior level
Senior level
Fintech • Software
The role involves designing, developing, and maintaining scalable web applications in C#, migrating services to AWS, and leading technical discussions. Candidates should have 5+ years of experience in web development and familiarity with Agile practices.
Top Skills: .Net CoreAngularAWSC#CSS3FluentassertionsHTML5MoqNunitReactSQLTypescriptVueXunit
2 Days AgoSaved
Remote
Colorado
90K-127K Annually
Senior level
90K-127K Annually
Senior level
Fintech • Software
As a Senior Software Engineer, you will design and maintain core billing systems, lead technical discussions, mentor junior developers, and implement security measures while optimizing system performance.
Top Skills: C#PHP
2 Days AgoSaved
Remote
Colorado
115K-200K Annually
Senior level
115K-200K Annually
Senior level
eCommerce • Retail
Design and implement backend services for TCGplayer's marketplace, focusing on microservices, performance, and scalability while supporting internal teams.
Top Skills: .Net CoreAWSC#DockerGithub ActionsHelmKafkaKubernetesMongoDBPostgresRedisSQL ServerTerraform
3 Days AgoSaved
In-Office
Colorado
Senior level
Senior level
Information Technology • Consulting
Design, develop, implement, and analyze technical products. Conduct engineering evaluations and improve product quality. Requires a bachelor's degree and 6 years of experience.
Top Skills: Apache Traffic ControlAPIsCC++GoHTTPJavaLinuxNetworkingPerlSystems AdministrationUnix
3 Days AgoSaved
In-Office
Colorado
Senior level
Senior level
Information Technology • Software
Seeking a C# Engineer, Architect to join a team, focusing on development and providing a technology roadmap. Requires strong architecture skills.
Top Skills: AgileC#JavaScriptJqueryJSONMs TestMvc 4Mvc 5NunitWeb ServicesXML
3 Days AgoSaved
In-Office
Colorado
Senior level
Senior level
Information Technology • Software
Lead a development team focused on data processing and statistical analysis, ensuring high-quality software development and complex report packaging for clients.
Top Skills: C#PythonR
3 Days AgoSaved
In-Office
Colorado
Senior level
Senior level
Information Technology • Software
The Sr. C# Developer will work in an Agile/Scrum environment focusing on .NET development, rich UI web applications, and commercial software.
Top Skills: AjaxC#CSSHTMLJavaScriptJqueryJSONSQL Server
Senior level
AdTech • Fintech • Information Technology • Database
Design and implement high-performance system software for medical devices, collaborating with hardware engineers and ensuring adherence to clinical standards.
Top Skills: C++Python
Reposted 5 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Fintech • Software
You will develop and maintain components of the LLVM based toolchain, collaborating with the community while ensuring platform-specific optimizations and tests.
Top Skills: BashC++ClangCmakeGccLlvmPython
Reposted 5 Days AgoSaved
Remote
Colorado
150K-200K Annually
Senior level
150K-200K Annually
Senior level
Software
The engineer will enhance premium product offerings for Brave's desktop applications and integrate new products, ensuring privacy and security for users.
Top Skills: C++JavaScript
Reposted 7 Days AgoSaved
In-Office or Remote
Colorado
160K-342K Annually
Senior level
160K-342K Annually
Senior level
Aerospace • Artificial Intelligence • Machine Learning • Robotics • Software
Join the Hivemind perception team to develop software solutions for GPS-denied navigation and object detection. Enhance SDK capabilities, lead design reviews, and mentor engineers.
Top Skills: C++ (11 Or Greater)Ci/CdGitLinuxTest-Driven Development
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Reposted 7 Days AgoSaved
In-Office
Colorado
124K-180K Annually
Senior level
124K-180K Annually
Senior level
Fintech • Information Technology • Payments
The Staff Software Engineer will develop and maintain applications for Visa's payment systems, conduct business analysis, and coordinate across teams. This includes installation, configuration, and problem resolution for the VIP Authorization system.
Top Skills: AssemblerC++HTTPMq SeriesSoapTcp/IpZ/Tpf
Reposted 9 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Artificial Intelligence • Computer Vision • Cybersecurity
Design and build performance-critical components in C++. Require expertise in multithreaded systems, CI/CD pipelines, and GTK integration, as well as Python scripting.
Top Skills: C++CmakeConanGithub ActionsGtkLinuxPython
11 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Information Technology • Software
The Senior C++ Playback Engineer will design and develop a native C++ player for streaming video playback on various platforms, optimize performance, and collaborate with cross-functional teams.
Top Skills: AgileAv1C++CmafDolby VisionFfmpegGstreamerH.264H.265KHevcHlsLow-Latency HlsMpeg DashRest ApiRtmpRtpScrumVp8Vp9WebrtcWebvtt
Reposted 15 Days AgoSaved
In-Office
Colorado
124K-145K Annually
Senior level
124K-145K Annually
Senior level
Aerospace • Information Technology • Software • Biotech • Design
The Senior Software Engineer will develop software throughout its lifecycle, participate in pre-sales, generate software documentation, and collaborate within cross-disciplinary teams.
Top Skills: AgileC++LinuxPython
Reposted 15 Days AgoSaved
In-Office or Remote
Colorado
131K-281K Annually
Senior level
131K-281K Annually
Senior level
Aerospace • Artificial Intelligence • Machine Learning • Robotics • Software
As a Perception Software Engineer, you will develop algorithms for GPS-denied navigation, computer vision, and sensor fusion, while also enhancing the SDK product and mentoring peers.
Top Skills: C++Ci/CdGitLinuxTest-Driven Development
Reposted 17 Days AgoSaved
In-Office or Remote
Colorado
99K-140K Annually
Senior level
99K-140K Annually
Senior level
Energy • Manufacturing • Solar • Renewable Energy
Lead I&C Software Support Engineer oversees software quality delivery, develops software test tools, performs testing, manages projects, and communicates with stakeholders.
Top Skills: CC++DebuggersGitlabIdesLdraPythonSoftware Development Tools
17 Days AgoSaved
Remote
Colorado
112K-140K Annually
Senior level
112K-140K Annually
Senior level
Software
The Sr. Software Engineer will develop scalable cloud-native APIs using .NET, lead architectural discussions, and mentor team members while improving core system components.
Top Skills: .Net CoreAWSJavaKubernetesOpentelemetryPostgres
Reposted 17 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Fintech • Software
Develop backend services and APIs, improve existing solutions, create automated tests, and collaborate with the team while ensuring code quality and documentation.
Top Skills: Apache KafkaAsp.NetAWSC#Entity FrameworkGitGraphQLGrpcHTTPNatsNoSQLNunitRabbitMQRedisSoapSQLTcpXunit
18 Days AgoSaved
In-Office
Colorado
124K-180K Annually
Senior level
124K-180K Annually
Senior level
Fintech • Information Technology • Payments
The Staff Software Engineer is responsible for maintaining, supporting, and improving Visa's applications on HP Nonstop platforms, collaborating across teams to identify and implement solutions, and enhancing application efficiency.
Top Skills: CCobolEnscribeNonstop SqlPathwayScobolTaclTal
Reposted 21 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Information Technology
Design and develop scalable services/APIs using C#/.NET/.NET Core, collaborate during SDLC, mentor junior engineers, and ensure code quality.
Top Skills: C#,.Net,.Net Core,Linux,Aws,Azure,Docker,Kubernetes,Kafka
Reposted 22 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Insurance
Join SageSure as a Staff Software Engineer to build scalable Java services for API products, mentor engineers, and enhance integration strategies.
Top Skills: APIsJavaMicroservicesTemporal
Reposted 22 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Artificial Intelligence • Software
Design high-performance C++ libraries for automated PCB design challenges, mentoring peers and shaping technical direction while collaborating with experts in various fields.
Top Skills: C++CudaPython
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