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Top C# Jobs in Denver & Boulder, CO

Reposted 3 Days AgoSaved
In-Office
Colorado
90K-120K Annually
Junior
90K-120K Annually
Junior
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense • Manufacturing
The role involves designing and implementing simulation software for spacecraft using C++ and collaborating on algorithms for orbital mechanics and control.
Top Skills: C++Python
Reposted 11 Days AgoSaved
Remote or Hybrid
Colorado
170K-230K Annually
Expert/Leader
170K-230K Annually
Expert/Leader
HR Tech • Information Technology • Professional Services • Sales • Software
The Senior Backend Engineer will develop core mechanisms for financial planning, lead backend development, mentor peers, and manage the full development cycle.
Top Skills: AWSAws GlueC#JavaMySQLPostgresPysparkScalaSinglestore
2 Days AgoSaved
In-Office
Colorado
130K-204K Annually
Senior level
130K-204K Annually
Senior level
Digital Media • Gaming • Internet of Things • News + Entertainment • Retail • Business Intelligence • Cybersecurity
Design, build, and support the video advertising platform. Responsible for the software development lifecycle while collaborating with cross-functional teams and mentoring junior engineers.
Top Skills: AgileC++Db DesignNetwork ProgrammingPythonSdlc
3 Days AgoSaved
Easy Apply
Remote
Colorado
Easy Apply
141K-208K Annually
Mid level
141K-208K Annually
Mid level
Database • Analytics
Contribute to and optimize the performance of ClickHouse, assist with debugging, collaborate with teams, and engage with the open-source community.
Top Skills: C++KubernetesTcp/IpUnix/Linux
Reposted 3 Days AgoSaved
Remote
Colorado
Senior level
Senior level
Software • Financial Services
The Lead Software Engineer will develop software, mentor peers, ensure software quality, and create architectural approaches while guiding development teams.
Top Skills: .NetAi/CopilotAzureC#Node.jsReactTerraformTerragruntVb.Net
Reposted 3 Days AgoSaved
In-Office
Colorado
150K-235K Annually
Senior level
150K-235K Annually
Senior level
Digital Media • Gaming • Internet of Things • News + Entertainment • Retail • Business Intelligence • Cybersecurity
The Lead Software Engineer will oversee the software development lifecycle of a high-performance Ad Server, collaborating with stakeholders, mentoring junior engineers, and ensuring quality and timeliness of releases.
Top Skills: C++Db DesignGoNetwork Programming
Reposted 3 Days AgoSaved
In-Office or Remote
Colorado
140K-250K Annually
Mid level
140K-250K Annually
Mid level
Artificial Intelligence • Productivity • Software
Build and launch native desktop applications for Windows, Mac, and Linux using C# and Avalonia UI. Collaborate on UI implementation and gain expertise in native APIs.
Top Skills: .NetAvalonia UiC#DjangoPythonSwiftWpfXamarin Forms
Reposted 3 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
4 Days AgoSaved
Remote
Colorado
146K-241K Annually
Senior level
146K-241K Annually
Senior level
Other • Software • Analytics
Design and develop APIs for ArcGIS Maps SDKs using .NET and C#. Collaborate across teams to solve complex design problems and optimize software performance.
Top Skills: .Net.Net MauiApi DesignC#GisWinuiWpf
Reposted 7 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 9 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
Reposted 11 Days AgoSaved
In-Office or Remote
Colorado
30-70 Hourly
Mid level
30-70 Hourly
Mid level
HR Tech • Other • Professional Services
The Software Engineer will analyze, rank, and improve AI-generated code, providing feedback for reinforcement learning in a remote role.
Top Skills: C#
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Reposted 11 Days AgoSaved
In-Office or Remote
Colorado
30-70 Hourly
Mid level
30-70 Hourly
Mid level
HR Tech • Other • Professional Services
The role involves training large-language models to improve code generation, reviewing and editing AI-generated code, and providing feedback for reinforcement learning refinement.
Top Skills: C++
12 Days AgoSaved
Remote
Colorado
Mid level
Mid level
Artificial Intelligence • Information Technology • Software
Develop, test, and maintain software applications using .NET and C#, collaborate with teams, and improve development processes.
Top Skills: .NetAsp.NetAzure DevopsC#Cloud TechnologiesCSSEntity FrameworkGitHTMLJavaScriptMvcSQL Server
13 Days AgoSaved
In-Office or Remote
Colorado
30-70 Hourly
Mid level
30-70 Hourly
Mid level
HR Tech • Other • Professional Services
Train large-language models to improve code quality by comparing snippets, providing feedback, and refining AI-generated code. Requires strong communication skills and attention to detail.
Top Skills: C
Reposted 13 Days 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 14 Days AgoSaved
Easy Apply
Remote
Colorado
Easy Apply
90K-137K Annually
Senior level
90K-137K 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
Reposted 14 Days AgoSaved
Remote
Colorado
158K-213K Annually
Senior level
158K-213K Annually
Senior level
Software
The Engineer will design, develop, and operate routing services, solving complex guidance scenarios and creating customizable navigation solutions for various clients.
Top Skills: AWSC++GoJvmLinuxRust
Reposted 15 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
Reposted 15 Days AgoSaved
In-Office
Colorado
84K-105K Annually
Mid level
84K-105K Annually
Mid level
Analytics
Develop and enhance software in an Agile environment, troubleshoot issues, support QA processes, and document changes for a collaborative team.
Top Skills: BashCHibernate OrmJavaJava SpringJava SwingLinuxPostgresScala
Reposted 16 Days AgoSaved
Remote
Colorado
164K-273K Annually
Mid level
164K-273K Annually
Mid level
Cloud • Security • Software • Cybersecurity
Develop and support Veeam Backup for Office 365, collaborate in product development, and plan features. Requires C# expertise and cloud development experience.
Top Skills: .Net 8AmazonAzureAzure DevopsC#C++C++CliExchangeGitJenkinsOffice 365PowershellRestRiderSharepointSQLVisual Studio 2022Wpf
Reposted 16 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 16 Days AgoSaved
In-Office
Colorado
Junior
Junior
Information Technology • Software
The C# Developer, Analyst will implement and customize software, troubleshoot issues, and engage with clients, balancing coding and business interactions.
Top Skills: C#ExcelJavaScriptJquerySQLVBA
Reposted 16 Days AgoSaved
In-Office
Colorado
Mid level
Mid level
Information Technology • Software
Seeking a C# / MVC Developer to convert a VB.NET site to C# / MVC. Responsibilities include full stack .NET development, SQL development, and testing.
Top Skills: BootstrapC#CSSHTML5JavaScriptMvcSQL ServerVb.Net
Reposted 16 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
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