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Top C# Jobs in Denver & Boulder, CO

11 Hours Ago
Remote
Hybrid
Colorado, CO
155K-255K Annually
Senior level
155K-255K Annually
Senior level
Cloud • Computer Vision • Information Technology • Sales • Security • Cybersecurity
Lead development of cloud-native microservices for Next-Gen SIEM, focusing on detections and UEBA. Ownership of projects, collaboration with teams, and optimization of performance in a high-volume data environment.
Top Skills: AWSC#DockerGoJavaKafkaKubernetesOpensearchPostgresPythonRedis
Reposted 11 Hours Ago
Easy Apply
Remote
Colorado, CO
Easy Apply
213K-295K Annually
Expert/Leader
213K-295K Annually
Expert/Leader
Artificial Intelligence • Fintech • Machine Learning • Social Impact • Software
As a Distinguished Engineer, you will drive technical excellence in Upstart's Pricing team, optimizing loan offer systems using AI and ML, guiding architectural evolution, and mentoring other engineers.
Top Skills: AIAWSC#C++DockerGrpcJavaKafkaKubernetesMachine LearningPython
Reposted 11 Hours Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
Senior level
Senior level
Cloud • Healthtech • Professional Services • Software • Pharmaceutical
The Principal Full Stack Software Engineer will design and develop core modules for the elluminate platform while ensuring compliance with quality standards and providing technical support and guidance to other engineers.
Top Skills: AngularAsp.Net MvcC#CSSHTMLJavaScriptSQL ServerTypescript
Reposted Yesterday
Remote
Hybrid
Colorado, CO
118K-231K Annually
Senior level
118K-231K Annually
Senior level
Big Data • Cloud • Software • Database
Develop and operate scalable, distributed systems as part of the Atlas Async Runtime team, including leading design and implementation efforts, and mentoring junior engineers.
Top Skills: C#GoJavaMongoDBRust
Reposted 2 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
Mid level
Mid level
Cloud • Healthtech • Professional Services • Software • Pharmaceutical
The Senior Software Engineer will design and develop core modules for the elluminate platform, focusing on software design, development, unit testing, and collaborating with QA teams.
Top Skills: AngularAsp.Net MvcAWSC#CSSHTMLJavaScriptMicrosoft Sql ServerSagemaker
Reposted 2 Days Ago
Remote
Hybrid
Colorado, CO
91K-169K Annually
Junior
91K-169K Annually
Junior
Artificial Intelligence • Cloud • Sales • Security • Software • Cybersecurity • Data Privacy
The Software Engineer II role involves maintaining microservices for a SaaS product, driving code quality, collaborating in an agile environment, and troubleshooting customer issues. The engineer will adopt testing frameworks, monitor application performance, and participate in the OnCall process, all while focusing on continuous improvement in a collaborative team setting.
Top Skills: AWSC#EksGoGrafanaJavaKafkaNoSQLPrometheusRedisSQL
4 Days Ago
Remote
Hybrid
Colorado, CO
Senior level
Senior level
Cloud • Insurance • Payments • Software • App development • Big Data Analytics
Lead software engineering teams, address technical issues, manage quarterly planning, and coach team members to deliver high-quality, scalable solutions.
Top Skills: .NetAngular 15+AngularjsC#JavaScriptSQL
Reposted 4 Days Ago
Remote
Colorado, CO
200K-250K Annually
Mid level
200K-250K Annually
Mid level
Cloud • Enterprise Web • Software
The role involves optimizing and maintaining a cloud infrastructure platform, developing internal tools, and ensuring distributed systems scalability.
Top Skills: AWSC#C++GCPGoJavaKubernetesLinuxRust

Featured Jobs

Reposted 4 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
Senior level
Senior level
Cloud • Healthtech • Professional Services • Software • Pharmaceutical
The Principal Clinical Database Programmer provides technical support and oversight for Medidata Clinical Cloud implementation, handling data management, programming, and project leadership responsibilities.
Top Skills: Business ObjectsC#CognosCrystal ReportsCtmsEproIvrs/IwrsJreviewMedidata Clinical CloudMS OfficeExcelMs ProjectRave Edc
Reposted 4 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
Mid level
Mid level
Cloud • Healthtech • Professional Services • Software • Pharmaceutical
The Software Engineer will design and develop core modules for the elluminate platform, involving all software lifecycle phases such as testing and code reviews, while solving complex problems and collaborating with teams.
Top Skills: .Net FrameworkAngularC#CSSHTMLJavaScriptSQL ServerVisual Studio
Reposted 4 Days Ago
Easy Apply
Remote
Colorado, CO
Easy Apply
142K-197K Annually
Mid level
142K-197K Annually
Mid level
Artificial Intelligence • Fintech • Machine Learning • Social Impact • Software
As a Software Engineer on the Home Lending team, you will build Upstart’s newest products like HELOC and Mortgage, working on both frontend and backend technologies to enhance code quality and team metrics.
Top Skills: AWSC#JavaKafkaKotlinKubernetesNext.JsReactSpring BootSQL
Reposted 5 Days Ago
Remote
Colorado, CO
200K-240K Annually
Senior level
200K-240K Annually
Senior level
Digital Media • Kids + Family • Mobile • Software • Sports
The Staff Backend Engineer will lead video pipeline development, enhance live-streaming capabilities, mentor teams, and architect scalable solutions for user-generated content.
Top Skills: AWSC#C++FfmpegGoKotlinNode.jsPythonReactRustSwiftTypescript
Reposted 5 Days Ago
Colorado, CO
100K-135K Annually
Mid level
100K-135K Annually
Mid level
Digital Media • Gaming • Software • Esports • Automation
You will design and implement automated test suites, enhance testing infrastructure, and collaborate with cross-functional teams to ensure software quality and reliability.
Top Skills: AWSAzureC#Ci/CdDockerGoGCPJavaScriptKubernetesPythonTypescript
5 Days Ago
Easy Apply
Remote
Colorado, CO
Easy Apply
102K-154K Annually
Mid level
102K-154K Annually
Mid level
Fintech • Social Impact • Financial Services
The Site Reliability Engineer will enhance the reliability, availability, and performance of the AWS platform, collaborating with various teams and improving observability, monitoring, and automation.
Top Skills: AWSC#C/C++Ci/CdDatadogEcsElk StackGoGrafanaJavaJavaScriptKubernetesLinuxNode.jsPrometheusPythonRubyTerraformYaml
Reposted 6 Days Ago
Remote
Hybrid
Colorado, CO
60K-120K
Senior level
60K-120K
Senior level
Digital Media • Fintech • Information Technology • Mobile • Payments • Software • Financial Services
The Staff Software Engineer will develop backend solutions collaboratively, implement digital banking features, and mentor teammates while ensuring security compliance.
Top Skills: .Net CoreAWSC#GitGo
Reposted 7 Days Ago
Remote
Colorado, CO
148K-174K Annually
Junior
148K-174K Annually
Junior
Artificial Intelligence • Blockchain • Fintech • Financial Services • Cryptocurrency • NFT • Web3
As a Software Engineer in Infrastructure at Coinbase, you will improve observability, automate systems, optimize cloud deployments, and mentor the engineering team.
Top Skills: Aws AuroraC#DatadogDockerDynamoDBEc2GoJavaKibanaKubernetesMongoDBPostgresTerraform
8 Days Ago
Easy Apply
Remote
Colorado, CO
Easy Apply
142K-226K Annually
Senior level
142K-226K Annually
Senior level
Artificial Intelligence • Fintech • Machine Learning • Social Impact • Software
The Senior Software Engineer will build and lead web features for Upstart's Small Dollar Loans, mentor engineers, and collaborate on strategy.
Top Skills: C#JavaKotlinNext.JsReactRubyRuby On RailsSpring FrameworkVercel
8 Days Ago
Remote
Hybrid
Colorado, CO
Senior level
Senior level
HR Tech • Information Technology • News + Entertainment • Professional Services • Sales • Software
The Backend Engineer will focus on backend development, software design, and scalable architecture, requiring experience in C#, Java, or Scala, and cloud technologies like AWS.
Top Skills: AWSAws GlueC#JavaMySQLPostgresPysparkScala
8 Days Ago
Remote
Hybrid
Colorado, CO
Mid level
Mid level
Cloud • Insurance • Payments • Software • App development • Big Data Analytics
Seeking a Software Engineer for the Personal Lines Insurance team to design, maintain, and test web-based solutions in an Agile environment while emphasizing quality and automation.
Top Skills: .NetApigeeC#CypressDatadogDockerEnvoyGitlabGoHelmIstioJavaScriptJIRAKubernetesNode.jsPostgressqlReactRestsharpSQLTerraformTypescript
Reposted 9 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
220K-255K
Senior level
220K-255K
Senior level
Marketing Tech • Social Media • Software • Analytics • Business Intelligence
As an Engineering Manager, you will lead a team to build and maintain high-quality software systems, drive strategic change, and foster team development while ensuring project delivery and technical sustainability.
Top Skills: C#C++ElasticsearchHbaseJavaMySQLPython
Reposted 9 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
185K-240K
Senior level
185K-240K
Senior level
Marketing Tech • Social Media • Software • Analytics • Business Intelligence
Develop and support IAM solutions, lead projects, collaborate on technical roadmaps, and ensure operational excellence in access control systems.
Top Skills: AWSC#C++GCPJavaJwtsOauth 2.0OidcPythonRbacSAML
9 Days Ago
Remote
Hybrid
Colorado, CO
151K-297K Annually
Expert/Leader
151K-297K Annually
Expert/Leader
Big Data • Cloud • Software • Database
Drive the adoption of MongoDB by engaging senior technical leaders at Fortune 1000 companies, conducting education sessions, and contributing to thought leadership.
Top Skills: C#JavaMongoDBPythonRdbms
Reposted 9 Days Ago
Easy Apply
Remote
Hybrid
Colorado, CO
Easy Apply
185K-240K
Senior level
185K-240K
Senior level
Marketing Tech • Social Media • Software • Analytics • Business Intelligence
The Staff Software Engineer will lead engineering projects on distributed systems, collaborate with cross-functional teams, and enhance product delivery processes while mentoring peers.
Top Skills: AWSC#C++ElasticsearchGCPJavaOpensearchPython
12 Days Ago
Colorado, CO
100K-170K
Mid level
100K-170K
Mid level
Aerospace • Artificial Intelligence • Hardware • Machine Learning • Software • Defense
Design and develop Ground Support Equipment (GSE) for spacecraft testing, ensuring integration of electrical and mechanical systems while troubleshooting issues and maintaining compliance with industry standards.
Top Skills: AutocadC#C++CatiaPythonSolidworks
Reposted 13 Days Ago
Easy Apply
Remote
Colorado, CO
Easy Apply
139K-187K Annually
Senior level
139K-187K Annually
Senior level
Fitness • Hardware • Healthtech • Retail • Software
The Senior Software Engineer at Peloton will develop and maintain APIs and microservices for music-related features, collaborating with cross-functional teams and leading technical discussions.
Top Skills: .NetAgileAWSC#Ci/CdDevOpsDockerKubernetesLambdaMicroservicesMongoDBNservicebusRabbitMQReactS3SQLSqsVue
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