Top Senior Backend Engineer Jobs in Denver & Boulder, CO

Reposted YesterdaySaved
Remote or Hybrid
Colorado, CO
165K-235K Annually
Senior level
165K-235K Annually
Senior level
Big Data • Cloud • Productivity • Software • Database • Analytics • Automation
The Senior Backend Engineer will design and implement key SaaS features, focusing on data modeling and API performance, while collaborating with a senior development team to enhance engineering operations.
Top Skills: AWSDjangoPython
Reposted YesterdaySaved
Remote
Colorado, CO
157K-230K Annually
Senior level
157K-230K Annually
Senior level
Insurance • Legal Tech • Social Impact
The Senior Backend Engineer will enhance data integration infrastructure, manage internal systems, and collaborate with teams to execute engineering tasks for growth initiatives.
Top Skills: GCPGoKubernetesSalesforceTerraform
Reposted YesterdaySaved
Remote
Colorado, CO
157K-230K Annually
Senior level
157K-230K Annually
Senior level
Insurance • Legal Tech • Social Impact
As a Senior Software Engineer, you'll own backend systems, mentor team members, and collaborate with product and design to build user-focused solutions.
Top Skills: DockerGoGoogle Cloud PlatformKubernetesTerraform
Reposted 7 Days AgoSaved
In-Office or Remote
Colorado, CO
65-90 Hourly
Senior level
65-90 Hourly
Senior level
Food • Healthtech • Information Technology • Other
The Senior Back-End Engineer will build cloud-native back-end services, APIs, and microservices for a health technology platform, focusing on scalability, security, and compliance.
Top Skills: .Net 10Api ManagementAzure FunctionsC#Cosmos DbEvent GridKey VaultService BusSQL
Reposted 10 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
145K-190K Annually
Senior level
145K-190K Annually
Senior level
Cannabis • eCommerce • Enterprise Web • Logistics • Payments • Software • Database
The Senior Backend Engineer II will design, build, and maintain backend services for financial workflows, collaborating with product and engineering teams to enhance system reliability and performance.
Top Skills: DockerJavaJvm FrameworksKubernetesRelational Databases
Reposted 13 Days AgoSaved
Hybrid
Colorado, CO
135K-150K Annually
Senior level
135K-150K Annually
Senior level
Food • Healthtech • Information Technology • Other
Develop and maintain software applications, collaborate in agile teams, mentor junior engineers, and enhance digital experiences using modern technologies.
Top Skills: .Net CoreAzure FunctionsAzure SqlC#CosmosdbDockerEntity FrameworkWebapi
Reposted 14 Days AgoSaved
Remote
Colorado, CO
179K-179K Annually
Senior level
179K-179K Annually
Senior level
Information Technology
As a Senior Backend Engineer at DuckDuckGo, you'll lead backend projects, mentor engineers, and develop AI-enhanced features for the company's privacy-centric product line.
Top Skills: Ai ToolingGoNode.jsPerlRag Pipelines
22 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
146K-164K Annually
Senior level
146K-164K Annually
Senior level
Insurance
The Senior Backend Engineer will design, build, and maintain backend services and technologies for Openly's insurance platform, focusing on API development and system integration while providing mentorship and collaborating on architecture decisions.
Top Skills: BigQueryCircleCICloud FunctionsComposer/AirflowDatadogDockerGCPGoKubernetesPostgresPythonSQLTerraform
Reposted 4 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
169K-240K Annually
Senior level
169K-240K Annually
Senior level
Big Data • Fintech • Mobile • Payments • Financial Services
The Senior Software Engineer will lead and support a team in developing reliable and scalable backend systems, collaborating on product development, and improving infrastructure for secure communication between services.
Top Skills: AWSHelmKotlinKubernetesMySQLPython
Reposted 2 Days AgoSaved
In-Office
Colorado, CO
Senior level
Senior level
Consumer Web • Other
The role involves developing high-scale, distributed backend systems, collaborating with teams, and optimizing products through A/B testing.
Top Skills: AWSElasticsearchHiveJavaKafkaKibanaRestful Api
5 Days AgoSaved
Remote
Colorado, CO
136K-204K Annually
Senior level
136K-204K Annually
Senior level
Artificial Intelligence • Cloud • Consumer Web • eCommerce • Information Technology • Software
The Senior Software Engineer will design and develop scalable applications, enhance DevOps practices, and drive continuous improvement within infrastructure and systems.
Top Skills: DockerGoJavaMemcachedMySQLPHPPythonRedis
Reposted 20 Hours AgoSaved
Remote
Colorado, CO
160K-240K Annually
Senior level
160K-240K Annually
Senior level
Blockchain • Software • Financial Services • Cryptocurrency
The role involves developing a decentralized darkpool with high-performance matching engine, cross-chain liquidity aggregation, and fault-tolerant architecture while ensuring cryptographic privacy and low latency.
Top Skills: Api DesignBack-End Systems DesignDatabasesDistributed SystemsRedisWebsocketZero-Knowledge Proof Systems
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Reposted YesterdaySaved
Remote
Colorado, CO
Senior level
Senior level
Fintech • Software • Financial Services
The Senior Backend Engineer will lead client projects, build AI solutions, and develop technical standards while mentoring junior engineers.
Top Skills: AWSAzureDbtGCPGitJupyterLangchainMatplotlibMl FrameworksPandasPolarsPydantic AiPydata StackPythonPyTorchScikit-LearnSQLTensorFlow
Reposted 7 Days AgoSaved
Easy Apply
Remote
Colorado, CO
Easy Apply
169K-240K Annually
Senior level
169K-240K Annually
Senior level
Big Data • Fintech • Mobile • Payments • Financial Services
The role involves designing and expanding backend systems, mentoring engineers, and executing technical strategies to modernize architecture and improve system performance.
Top Skills: AWSGrpcJavaKotlinKubernetesMySQLPythonSnowflake
Reposted 2 Days AgoSaved
Remote
Colorado, CO
140K-155K Annually
Senior level
140K-155K Annually
Senior level
Fintech • Software
The Senior Backend Engineer will develop financial technology solutions, focusing on transparency in consumer lending through modern API development and data analytics, while collaborating with various teams to enhance product offerings.
Top Skills: Google BigqueryGoogle Cloud PlatformGraphQLKotlinKubernetesNode.jsPandasPlayRReactReduxRest ApiScalaSparkSpring BootSQL
Reposted 2 Days AgoSaved
Remote
Colorado, CO
148K-203K Annually
Senior level
148K-203K Annually
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Marketing Tech • Software • Biotech • Design
Design and implement data infrastructure for Oura's Context Hub. Responsibilities include building data pipelines, defining data models, creating APIs, and ensuring system resilience in production environments.
Top Skills: AWSDynamoDBEksEventbridgeFastapiGrafanaKinesisLambdaOpentelemetryPrometheusPythonRdsSqs
3 Days AgoSaved
Remote
Colorado, CO
146K-212K Annually
Senior level
146K-212K Annually
Senior level
Fintech • Payments • Real Estate • Software • Financial Services
As a Senior Backend Engineer, you'll design, develop, and scale APIs for rent payments, ensuring user-friendly experiences and high-quality feature delivery.
Top Skills: Aurora RdsAWSCdkCi/CdDatadogDynamoDBEksElasticacheGithub ActionsGradleJavaJunitSpringTerraform
Reposted 3 Days AgoSaved
Remote
Colorado, CO
170K-195K Annually
Senior level
170K-195K Annually
Senior level
Software
The Senior Backend Engineer will develop, test, and maintain scalable integrations, support cross-functional teams, and enhance developer experiences.
Top Skills: AWSDjangoDockerGitlab CiPostgresPythonRedisTerraformTypescript
Reposted 4 Days AgoSaved
Remote
Colorado, CO
160K-220K Annually
Senior level
160K-220K Annually
Senior level
Fintech • Payments • Financial Services
The Senior Backend Engineer will design and implement complex financial systems, lead technical decisions, mentor junior engineers, and optimize system performance within a remote fintech team.
Top Skills: Google Cloud PlatformNoSQLPythonSQL
Reposted 4 Days AgoSaved
Remote
Colorado, CO
187K-220K Annually
Senior level
187K-220K Annually
Senior level
Software
As a Senior Backend Engineer, you will design, implement, and maintain complex integrations with various third-party systems and ensure high performance and reliability in a cloud-native environment, focusing on AI-driven product features.
Top Skills: Ai Development ToolsAWSCloud-Based TechnologiesIntegration PatternsMicroservicesNode.jsRestful ApisWebhooks
5 Days AgoSaved
Remote
Colorado, CO
Senior level
Senior level
eCommerce • Information Technology • Software • App development
The Senior Back-End Developer will lead backend initiatives, mentoring a team, developing infrastructure with PHP and Laravel, and optimizing technology.
Top Skills: AngularjsAWSAzureCSSDevOpsExpress.JsGoogle Cloud PlatformHTMLJavaScriptLaravelMySQLNode.jsPHPReact
Reposted 5 Days AgoSaved
Remote
Colorado, CO
84K-126K Annually
Senior level
84K-126K Annually
Senior level
Information Technology
The Senior Back-End Engineer at Forum One develops complex WordPress solutions, integrates APIs, and collaborates with teams to enhance digital platforms.
Top Skills: Ai-Assisted Development ToolsCSSGitJavaScriptPHPSalesforceServicenowWordpress
Reposted 5 Days AgoSaved
Remote
Colorado, CO
Senior level
Senior level
Artificial Intelligence
The Senior Backend Engineer will design and implement infrastructure for an AI system, solve complex data-related problems, and ensure system scalability and security.
Top Skills: Cloud InfrastructureGoObservability ToolingPostgresPython
Reposted 5 Days AgoSaved
Remote
Colorado, CO
53K-120K Annually
Senior level
53K-120K Annually
Senior level
HR Tech
As a Senior Backend Engineer, you will develop tools, APIs, and integrations, ensuring production systems are secure and scalable using Elixir, with responsibilities including mentoring and project leadership.
Top Skills: AWSElixirGitlabNext.JsPhoenixPostgresReact
Reposted 5 Days AgoSaved
Remote
Colorado, CO
139K-203K Annually
Senior level
139K-203K Annually
Senior level
Artificial Intelligence • Information Technology • Machine Learning • Marketing Tech • Software • Biotech • Design
Develop and maintain backend solutions, ensuring performance, security, and regulatory compliance, while collaborating in cross-functional teams.
Top Skills: AWSFastapiPython
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