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44 c net software engineer jobs at 27 companies in Boulder, CO

2mo
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Senior C++/C# Software Engineer
Centennial, Colorado, United States
$100k-$140k/yr OnsiteFull Time
Infovisa
Infovisa: Provides trust accounting and wealth management software solutions.
Bachelor's in computer science or related, strong experience with C++ or C#, familiarity with .NET and database design, problem solving and communication skills, interest in finance domain and legacy code maintenance.
Visual Studio Professional, .NET, C++, C#, Entity Framework, Microsoft SQL Server, MSTest, Moq, GitHub Copilot, Git, Azure DevOps, PowerShell
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3w
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C# Developer
Edmonton or Calgary or Toronto or Denver or Canada or India or United Kingdom or United States
OnsiteFull Time
Bits In Glass
Bits In Glass: Designs and implements automated software systems for large enterprises.
Strong C#, .NET/ASP.NET Core, SQL, Azure and Cosmos DB experience; familiarity with Azure DevOps, Application Insights and Python; strong system design, problem solving and communication skills.
C#, .NET, ASP.NET Core, SQL, Python, Azure, Azure DevOps, Application Insights, Cosmos DB
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1mo
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Software Engineer
Denver, Colorado, United States
$120k-$150k/yr HybridFull Time
Litera
Litera: AI-powered document and workflow software for legal professionals.
3+ YOE3–5 years software development experience; strong C# and TypeScript/JavaScript; .NET/.NET Core, ASP.NET Core, REST APIs, SQL, Entity Framework; web technologies and frameworks; CI/CD and Git workflows; prompt engineering.
C#, TypeScript, JavaScript, .NET, .NET Core, ASP.NET Core, REST APIs, SQL, Entity Framework, HTML, CSS, React, Angular, Vue, LLM, Git, GitHub, Microsoft Azure, Microsoft Azure DevOps, Microsoft Azure Data Factory, Docker, Kubernetes, AWS, SSAS, MDX, DAX, SSIS, Power BI, SQL Agent Jobs, Stored Procedures, Views
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1w
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Senior Software Engineer (.NET)
Aurora, Colorado, United States
$135k-$140k/yr OnsiteFull Time
Shamrock Foods Company
Shamrock Foods Company: Produces dairy goods and distributes food to foodservice businesses.
4+ YOE4+ years relevant experience with .NET/C#/MVC/JavaScript/SSIS/T-SQL; full-stack web development, Agile experience, strong SQL and UI skills; Master's or Bachelor's degree alternatives noted.
.NET, C#, MVC, JavaScript, SSIS, T-SQL, JQuery, HTML, CSS, SQL, Web Services
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4w
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Software Engineer
Greenwood Village, Colorado, United States
$108k-$150k/yr HybridFull Time
MiTek
MiTekNYSE: BRK-B: Provides software and automation for the building industry.
2+ YOEBachelor's in CS or related, 2+ years software design and development, professional experience with C# and .NET, desktop application development, debugging large codebases, and strong communication skills.
C#, .NET, C++, Azure DevOps, Entity Framework
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2w
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(USA) Software Engineer II
Seattle or Denver
$88k-$186k/yr OnsiteFull Time
Walmart
WalmartNYSE: WMT: Multinational retail operating discount stores and supermarkets.
3+ YOE.Net and C# proficiency, experience with MongoDB/NoSQL and AWS, commercial software development experience, bachelor's degree or 3+ years engineering experience, strong debugging and analytical skills.
.Net, C#, MongoDB, NoSQL, AWS, WCAG 2.2 AA
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Lead Software Engineer - Ignition
Denver, Colorado, United States
HybridFull Time
KPMG
KPMG: Global professional services network providing audit, tax, and advisory.
5+ YOE5+ years software development and systems architecture experience; strong Python, .NET/C#, Angular/TypeScript, SQL and Azure skills; experience with ML frameworks and integrating LLMs; bachelor's in CS/engineering preferred.
Angular, TypeScript, Python, .NET, C#, T-SQL, PyTorch, TensorFlow, scikit-learn, Azure, Azure OpenAI, Azure DevOps, App Services, Functions, SQL Database
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2w
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Software Engineer II
Denver or Fort Collins or Boulder
$90k-$110k/yr HybridFull Time
Synergetics
Synergetics: Provides secure cloud infrastructure and logistics software for defense.
3+ YOE3+ years software development with C#/.NET and Angular, Azure and SQL Server experience, CI/CD and DevOps familiarity, strong problem solving and communication; U.S. citizenship required.
.NET, Angular, C#, SQL Server, Microsoft Azure, Microsoft Azure App Services, Microsoft Azure Functions, Microsoft Azure SQL, Microsoft Azure Storage, Microsoft Azure Key Vault, GitHub, Azure DevOps, GitHub Actions, BICEP, Terraform, ARM templates, Docker, Kubernetes, ServiceNow, JavaScript, TypeScript, HTML, CSS, React, Vue
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3w
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Software Engineer II
Denver, Colorado, United States
$90k-$100k/yr HybridFull Time
Vertafore
VertaforeNYSE: ROP: Provides cloud-based software solutions for the insurance industry.
3+ YOEBachelor's degree,3+ years professional software engineering experience,proficiency in C#/.NET,Python or Java,database and ETL experience,SQL skills,React and Git experience,excellent communication and Agile experience.
C#/.NET, Python, Java, MS SQL, PostgreSQL, SSIS, BIML, SQL Server Management Studio, Visual Studio, IntelliJ, React, Git, Copilot, AWS, REST, ETL
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2mo
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Staff Cyber Software Engineer
Annapolis Junction or San Diego or Aurora or San Antonio or Cary
$186k-$292k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Designs and manufactures advanced aerospace and defense systems.
8+ YOEDegree in CS/IS/Network Engineering with 8+ years (PhD/8, MS/10, BS/12) experience; programming in Assembly, C, C++, Java, Perl, or Python; experience with Visual Studio/.NET or Unix/Linux build environments, network sockets and packet-level protocols; clearance with polygraph required.
CNO, Assembly, C, C++, Java, Perl, Python, Visual Studio, .NET, Unix, make, Linux, Windows, GOTS
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1mo
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.NET Application Developer (Junior & Mid-Level)
Broomfield, Colorado, United States
HybridFull Time
Sonepar
Sonepar: Global distributor of electrical products and B2B solutions.
3+ YOEBachelor's degree in CS/IT, 3+ years full-stack application development experience, proficiency with .NET/ASP.NET MVC, C#, Visual Studio, SQL Server, web technologies (JavaScript/TypeScript/HTML/CSS), and APIs.
Microsoft .NET Framework, ASP.NET MVC, C#, Visual Studio, Microsoft SQL Server, RESTful services, Web API, XML, JSON, JavaScript, TypeScript, jQuery, HTML, CSS
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1d
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Software Engineer I
Loveland, Colorado, United States
$80k-$119k/yr OnsiteFull Time
Nordson
NordsonNasdaq: NDSN: Manufactures precision dispensing and fluid management equipment for industry.
3+ YOE3–6 years full-stack C#/.NET experience building ASP.NET Core APIs and web UIs, relational DB skills, CI/CD and DevOps, Azure and AI exposure preferred.
C#, .NET, ASP.NET Core, Blazor, MAUI, gRPC, GraphQL, IFS, SAP, Salesforce, ServiceNow, Microsoft SQL Server, Oracle, PostgreSQL, EF Core, Dapper, CI/CD, Git, Microsoft Azure, Microsoft Azure Functions, Microsoft Azure Key Vault, Microsoft Azure Blob Storage, Microsoft Azure App Configuration, Microsoft Azure OpenAI, Microsoft Azure AI Search, Semantic Kernel, Docker, Hangfire, Duende IdentityServer, ASP.NET Identity
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2mo
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Sr. Principal Cyber Software Engineer
Annapolis Junction or San Antonio or Aurora or Carey
$149k-$235k/yr OnsiteFull Time
Northrop Grumman
Northrop GrummanNYSE: NOC: Develops and manufactures advanced aerospace, defense, and space systems.
8+ YOEBachelor's degree in computer science, information systems, or network engineering with 8+ years experience; strong C/C++, Java, Python; CNO tools; Windows/.NET and Unix/Linux development.
C, C++, Java, Perl, Python, Visual Studio, NET, Unix/Linux, Makefiles
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2mo
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Senior Software Engineer (Tech Lead), Customer Domain Engineering
New York City or Denver or San Francisco
$209k-$240k/yr HybridFull Time
Forge Global
Forge GlobalNYSE: FRGE: Marketplace for trading private shares and pre-IPO stock.
8+ YOE8+ years software engineering; technical lead experience; API design with C#/.NET; event-driven architectures; CQRS/Event Sourcing; SQL; fintech familiarity.
C#, NET, Kafka, RabbitMQ, SQL, Marten, CI/CD, DDD, Event Sourcing
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2mo
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Ground Software Systems Engineer
El Segundo or Colorado Springs or Aurora
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
7+ YOE7+ years in ground system components and software development (C++/Python), 2+ years in program reviews and software design documentation, agile, secret clearance, STEM degree.
C++, Python, Java, C, C#, JavaScript, React, NodeJS, PHP, Drupal, .NET
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1mo
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Software Engineer I - Ground Software
Greenwood Village or Austin or Laurel
$70k-$125k/yr HybridFull Time
York Space Systems
York Space SystemsNYSE: YSS: Designs and manufactures modular spacecraft platforms and mission solutions.
0+ YOEEarly‑career full‑stack engineer; 0–1 years experience; bachelor's (or pursuing) in CS or related; foundational React/Angular knowledge; familiarity with TypeScript, C#, REST, Git, SQL, front-end tools; ability to obtain security clearance.
React, TypeScript, C#, .NET, Docker, Kafka, REST, Yarn, Babel, Material-UI, Git, SQL, TanStack Query
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1mo
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Principal Software Engineer (REF# AT0630)
Denver or United States
$197k-$207k/yr RemoteFull Time
Convera
Convera: Provides cross-border payment and foreign exchange services for businesses.
8+ YOEBachelor's in CS or related and 8+ years experience. Experience with C#, .NET Core, ASP.NET Core, Angular/React/TypeScript, Kafka/RabbitMQ, AWS/Azure, threat modeling tools, CI/CD, and automated testing (NUnit).
C#, .NET Core, ASP.NET Core, Angular, React, TypeScript, Kafka, RabbitMQ, AWS, Azure, Fortify, Checkmarx, Black Duck, Qualys, NUnit, SQL, CI/CD
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2mo
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Ground Software Systems Engineer
El Segundo or Aurora or Colorado Springs
$87k-$198k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
7+ YOE7+ years in ground system components and software development; 2+ years in design docs and test procedures; Secret clearance; BS in STEM; Top Secret preferred
C++, Python, Java, C#, C, NET, JavaScript, React, NodeJS, PHP, Drupal, DO-178C
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Software Engineer Full Stack (Pricing Engine)
Denver or United States or United Kingdom or Canada or Australia or New Zealand
$83k-$125k/yr HybridFull Time
Xe
XeNASDAQ: EEFT: Provides international money transfers and online currency exchange services.
3+ YOE3+ years building production web applications; strong frontend with Vue.js or React; backend proficiency in C#/.NET (or Java, Kotlin, Go); SQL and AWS (SQS, DynamoDB, S3, ECS, Lambda); testing, AI coding tools, and strong system design and communication.
Vue.js, React, C#, .NET, Java, Kotlin, Go, SQL, AWS, SQS, DynamoDB, S3, ECS, Lambda, Copilot, Cursor, Claude Code, Memcached, Redis, Jira, Confluence, Postman, Bruno, CI/CD
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Engineering Developer
Lone Tree, Colorado, United States
OnsiteFull Time
Aircraft Performance Group
Aircraft Performance Group: Develops flight operations software for performance analysis and planning.
3+ YOE3+ years software development experience; strong C#/.NET and Windows desktop (WinForms); experience with 2D graphics, geospatial math, AI-assisted development, and aviation domain knowledge.
C#, .NET, WinForms, PHP, Swift, GDI+, SVG, SkiaSharp, Anthropic Claude, Claude Code, GitHub Copilot, Git, CI/CD, Ollama, llama.cpp, LM Studio
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