Top Senior C# Jobs in Denver & Boulder, CO

Reposted 8 Days AgoSaved
Hybrid
Colorado
120K-155K Annually
Senior level
120K-155K Annually
Senior level
Digital Media • Gaming • Software • Esports • Automation
The Senior Software Engineer develops and maintains Sports Trading applications using .NET and SQL Server, enhancing existing functions and providing technical guidance.
Top Skills: .NetC#GoGoogle Cloud PlatformReactSQL Server
5 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Artificial Intelligence • Blockchain • Digital Media • Information Technology
Develop and maintain .NET Core trading systems for Linux with service-oriented architecture and multi-threaded processing. Implement async, lock-free structures and distributed systems, write unit and integration tests, optimize SQL queries, design data structures and algorithms, and work with communication protocols (SignalR, gRPC, HTTP). Use PostgreSQL, Docker, and AWS in the deployment stack.
Top Skills: .Net CoreAsp.Net CoreAWSC#DockerGrpcHttp(S)JSONMstestNatsNunitPostgresProtobufSignalrSQLXMLXunit
6 Days AgoSaved
In-Office or Remote
Colorado
Senior level
Senior level
Database • Financial Services
Develop and optimize ultra-low-latency, high-performance trading infrastructure in modern C++. Implement and tune order execution, market data connectivity, multi-threaded systems, and risk modules. Profile and benchmark real-time systems, collaborate with quants and traders, and maintain robust, fault-tolerant continuous trading operations.
Top Skills: BenchmarkingCC++High-Performance ComputingLinuxLow-Latency SystemsMarket Data ConnectivityMultithreadingNetworkingOrder EntryPerformance TuningProfilingReal-Time SystemsTcpUdp
Reposted 7 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Agency
Lead a team to develop SaaS solutions while coding and mentoring engineers. Responsible for technical leadership and team management.
Top Skills: .Net.Net CoreBlazorC#Ci/Cd
Reposted 10 Days AgoSaved
Remote
Colorado
180K-200K Annually
Senior level
180K-200K Annually
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
13 Days AgoSaved
Remote
Colorado
Senior level
Senior level
AdTech • Agency • Marketing Tech
Design, build, and maintain backend workflow orchestration and state management for analyzer integrations on the ECL platform. Modernize legacy .NET systems, ensure reliable event-driven operations, collaborate with integration, infrastructure, and QA teams, and preserve workflow behavior during knowledge transfer.
Top Skills: .NetC#
Reposted 14 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
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Reposted 17 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
Reposted 17 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
Reposted 17 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
Reposted 18 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 19 Days AgoSaved
Remote
Colorado
123K-202K Annually
Senior level
123K-202K Annually
Senior level
Other • Software • Analytics
Develop user interface components for ArcGIS Pro using C# and WPF, work in an agile team, and design software solutions for raster and imagery processing.
Top Skills: Asynchronous ProgrammingC#C++MvvmTask Parallel LibraryWpf
20 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Information Technology • Professional Services • Analytics • Consulting
The Senior C# Developer will lead AI enablement by transforming APIs into an Agent Mesh using C# and the MCP, ensuring secure AI interactions through Gravitee management.
Top Skills: .NetC#Gravitee Api ManagementModel Context Protocol (Mcp)Oauth 2.1OpenapiPythonSwagger
Reposted 20 Days AgoSaved
Remote or Hybrid
Colorado
Senior level
Senior level
Mobile • Security • Software • Cybersecurity
The Senior Software Engineer will develop and maintain client-side applications, improve installation workflows, and ensure enterprise deployment support for cybersecurity products.
Top Skills: C#JAMFMdmsMicrosoft Endpoint Configuration ManagerMicrosoft IntuneRustWorkspace One
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