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99 java react developer jobs at 42 companies in Longmont, CO

1mo
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Senior Full Stack Java Engineer
Centennial, Colorado, United States
$150k-$170k/yr OnsiteFull Time
Yield Solutions Group
Yield Solutions Group: Provides auto loan refinancing and mortgage solutions for consumers.
7+ YOE7+ years software development with production Java Spring Boot and React; expert TypeScript; microservices, REST API and database design (Postgres/MariaDB); AWS and Terraform architecture; Datadog observability; CI/CD and testing ownership; AI-assisted development experience preferred.
Java Spring Boot, React, TypeScript, Postgres, MariaDB, AWS, Terraform, Datadog, CI/CD
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3w
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Staff Engineer (Java)
Los Angeles or Broomfield
$155k-$180k/yr HybridFull Time
Magnite
MagniteNASDAQ: MGNI: Independent sell-side platform for digital media advertising.
6+ YOE6+ years production Java experience, expertise in microservices, Spring Boot, Docker, AWS, relational and NoSQL databases, messaging systems, CI/CD, and automated testing.
Java, Spring Boot, Docker, AWS, EC2, ECS, Hibernate, MySQL, Oracle, Postgres, Redis, MongoDB, DynamoDB, RabbitMQ, Kafka, Maven, Git, Jenkins, Puppet, Jira, JavaScript, React, Ant Design, Material UI, React Bootstrap, Model Context Protocol (MCP)
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1mo
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Senior Software Engineer - Java/Kotlin
Boulder, Colorado, United States
$131k-$167k/yr OnsiteFull Time
Garmin
GarminNYSE: GRMN: Designs and manufactures GPS-enabled navigation and wearable technology products.
5+ YOEBachelor's in CS/CE/SE or equivalent and 5+ years experience; mastered Java/Kotlin with Spring; experience designing software systems, microservices, REST APIs, databases, Docker/Kubernetes; strong communication and leadership skills.
Java, Kotlin, Spring Framework, Spring Boot, Spring Cloud, Spring Security, WebFlux, Microservices, RESTful API, Relational Databases, NoSQL, Docker, Kubernetes, Lit, Angular, Svelte, React, Vue, Agile
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Senior Software Engineer – API & Cloud Integrations (Java, AWS)
Denver or Cedar Rapids or Philadelphia
$94k-$120k/yr HybridFull Time
Transamerica
TransamericaNYSE: AEG: Provides insurance, retirement solutions, and investment products to customers.
3+ YOEBachelor’s or equivalent experience; 3+ years Core Java; experience with Spring, microservices, APIs, databases (RDBMS/NoSQL), cloud (AWS/Azure), CI/CD, and integration frameworks; strong analytical and communication skills.
Java, Core Java, Spring Framework, Spring Boot, Spring MVC, J2EE, Entity Framework, IIS, Swagger, Swagger API, OData, .NET API 2, .NET API Core, AutoMapper, MS Cosmos DB, Microsoft Cosmos DB, Apache Cassandra, Amazon DynamoDB, AWS, Azure, EC2, ECS, S3, Kinesis, Microsoft VMs, Microsoft Blob, Microsoft Data Factory, Microsoft SQL Data Warehouse, Microsoft ARM Templates, Microsoft Event Hubs, Visual Studio, Git, Bitbucket, Maven, Jenkins, Nexus, SQL Management Studio, NUnit, Ajax, MS HPC, SageMaker, Spark, API Gateways, Apache Camel, Zookeeper, Kafka, Docker, OpenShift, Kubernetes, Angular, React, Vue.js, ASP.NET MVC, HTML, JS, CSS
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2mo
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Full Stack Software Engineer
New York City or Denver
$125k-$160k/yr HybridFull Time
Gen II Fund Services
Gen II Fund Services: Global fund administration for private capital asset managers.
3+ YOE3+ years full stack development with Java, Spring, TypeScript/React; SQL Server; CI/CD; microservices; Git; agile; strong communication.
Java, Spring Boot, Spring Security, Spring Data, TypeScript, React, SQL Server, Azure DevOps, Docker, Kubernetes, JUnit, Mockito, Jest, Playwright, Claude Code, Cursor, LangChain, LangGraph, Sage Intacct
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1mo
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Software Development Engineer - Developer Platform
Boulder, Colorado, United States
$130k-$196k/yr HybridFull Time
Workday
WorkdayNASDAQ: WDAY: Provides cloud-based software for financial and human capital management.
5+ YOE5+ years software engineering; 5+ years JVM backend (Java or Kotlin) with Spring Boot; 5+ years TypeScript/JavaScript and React; 3+ years cloud-native (GCP or AWS); Bachelor\u0002s or equivalent experience; EM/agentic system familiarity.
JVM, Java, Kotlin, Spring Boot, TypeScript, JavaScript, React, GCP, AWS, OpenAI-compatible APIs, OpenAI-compatible endpoints, Model Context Protocol (MCP), Cursor, Claude Code, Windsurf, Cline, SSE, WebSockets, Jest, React Testing Library, JUnit, Cypress, LangChain, Kubernetes, Helm, HTML, CSS
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1mo
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Software Engineer
Centennial or Warrenton
$95k-$150k/yr OnsiteFull Time
Altamira Technologies
Altamira TechnologiesNYSE: PSN: Provides data analytics and engineering for national security missions.
Bachelor's in CS or related field, active TS/SCI clearance (polygraph-able), experience with Java, Python, JavaScript/TypeScript, Angular, React, ElasticSearch/ELK, CI, databases, and strong verbal/written communication.
Java, Python, JavaScript, TypeScript, Angular, React, ElasticSearch, ELK stack, Redis, Web Services (REST), Machine Learning, Data Analytics, Android, NoSQL, SQL, Xmidas, Digital Signal Processing
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3w
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Software Engineer - iOS/Android
Denver or Strongsville or Pittsburgh or Birmingham or Dallas
$60k-$150k/yr OnsiteFull Time
PNC Financial Services
PNC Financial ServicesNYSE: PNC: Provides banking, lending, and investment services to customers.
5+ YOEBachelor's or equivalent,5+ years software development,3+ years Java enterprise experience,proficiency with Java,Spring Boot,REST,SQL,Git,frontend frameworks,and mobile iOS/Android development.
Java 11, Java 17, Spring Boot, Spring MVC, Hibernate/JPA, REST APIs, Microservices, Maven, Gradle, Angular, React, Vue, JavaScript, TypeScript, HTML5, CSS3, Swift, Objective-C, Kotlin, Android SDK, iOS SDK, React Native, Flutter, Oracle, PostgreSQL, SQL Server, MongoDB, AWS, Microsoft Azure, Google Cloud Platform, Docker, Kubernetes, Git, Jenkins, SonarQube, Jira, Postman, Kafka, GitHub Actions, Azure DevOps, GitLab
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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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3w
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Software Engineer: Full Stack - Python, Java or JavaScript/TypeScript (TS/SCI Clearance Required)
Alexandria or Chantilly or Englewood or Gaithersburg or Saint Louis or Tucson
OnsiteFull Time
North Point Technology
North Point Technology: Technology services and engineering for federal government missions.
Active TS/SCI clearance with polygraph ability, Bachelor's in CS or related, proficiency in Python/Java/JavaScript/TypeScript, cloud (AWS/Azure), containers, CI/CD, databases, and secure coding practices.
Python, Java, JavaScript, TypeScript, HTML, CSS, JSON, AJAX, REST APIs, React, Angular, Vue.js, Node.js, Spring Boot, Django, Flask, AWS, Azure, MySQL, PostgreSQL, SQL Server, Linux, Windows, Git, GitLab CI, Jenkins, JIRA, Confluence, Docker, Kubernetes, RMF, STIGs, Go, OpenSearch, Elasticsearch, S3, EC2, SQS, SNS, RDS, CloudFormation, Terraform, Ansible, GeoServer, PostGIS, OGC APIs, ESRI ArcGIS
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3mo
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Software Engineer
Aurora, Colorado, United States
$69k-$158k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
2+ YOE2+ years software development; Java, Python, Rust, or Go; experience with microservices; Top Secret clearance; Bachelor's degree.
Java, Python, Rust, Go, Linux, Docker, Kubernetes, C#, C++, JavaScript, React, Node.js
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3w
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Senior Software Engineer- Full Stack
Centennial, Colorado, United States
$111k-$160k/yr HybridFull Time
Daxko
Daxko: Software solutions for managing fitness and community centers.
7+ YOE7+ years full-stack software engineering experience with Java/Spring Boot, React/TypeScript, deep SQL Server expertise, testing discipline, and legacy-system migration experience.
Java, Spring Boot, pnpm, React, TypeScript, Vite, MUI, TanStack Query, Zod, ColdFusion, Docker, GitLab CI, AWS, S3, DynamoDB, KMS, Kubernetes, JUnit, WireMock, Vitest, Playwright, Selenium, SQL Server, Flyway, OpenAPI, RabbitMQ, Kafka
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1mo
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Lead Amazon Connect Developer
Englewood, Colorado, United States
$110k-$157k/yr OnsiteFull Time
EchoStar
EchoStarNasdaq: SATS: Global provider of satellite solutions and wireless communications services.
8+ YOE8+ years backend engineering experience; bachelor's in CS or related; 6+ years with Java and Python; deep AWS experience (Lambda, DynamoDB, S3, IAM, CloudWatch); experience with Amazon Connect, React, JavaScript, and AI/RAG systems.
Amazon Connect, Java, Python, React, JavaScript, Amazon Bedrock, AWS Lambda, DynamoDB, Amazon S3, IAM, CloudWatch, AWS API Gateway, Amazon Connect Streams API
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3w
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Software Developer Technical Lead
Centennial, Colorado, United States
$100k-$120k/yr OnsiteFull Time
Axos Financial
Axos FinancialNYSE: AX: Provides digital-first banking and diverse financial services to customers.
5+ YOE1+ MgmtBachelor's in CS or related,5+ years full-stack .NET development,1+ year leading technical resources,experience with Angular/React,REST/SOAP,APIs,Agile,strong OOP and communication skills.
.NET framework, C#, Java, JavaScript, MVC, Angular 10, React, TypeScript, jQuery, SQL Server, RabbitMQ, Swagger Docs, REST, SOAP, AWS
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1mo
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Senior Frontend Engineer
Denver, Colorado, United States
$160k-$185k/yr OnsiteFull Time
AgentSync
AgentSync: Modern insurance compliance and producer management software.
5+ YOE5+ years building production web apps; deep React expertise; strong HTML/CSS, accessibility, responsive design; experience with component libraries/design systems; proven use of AI tools; familiarity with backend (Java/Go) and AWS is beneficial.
React, Figma, Claude Design, Java, Go, AWS
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1mo
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Software Engineer
Aurora, Colorado, United States
$69k-$158k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
3+ YOE3+ years designing and developing software; proficiency with Python or Java; experience building RESTful APIs, cloud environments (AWS/Azure/GCP), and full-stack development; TS/SCI clearance with polygraph; Bachelor's in STEM required.
Python, Java, Vue, Node, AWS, Azure, GCP, RESTful APIs, Linux, Docker, Kubernetes, C#, C, C++, JavaScript, React
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1w
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Software Engineer III
Lone Tree or Englewood
$108k-$149k/yr HybridFull Time
Sierra Nevada Corporation
Sierra Nevada Corporation: Develops mission-critical aerospace and national security technology systems.
6+ YOEBachelor's in CS or related,6+ years software development experience,proficiency in Java,experience with Linux (RHEL) and hardware integration,ability to obtain U.S. Secret security clearance and U.S. citizenship required.
Java, Linux (RHEL), Windows, C#, C++, Python, Java Script/Typescript, React, WPF, .NET
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2mo
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Senior Software Engineer
Peoria or Chicago or Irving or Dallas or Cary or Denver
$113k-$183k/yr OnsiteFull Time
Caterpillar
CaterpillarNYSE: CAT: Manufactures construction equipment, mining machinery, and industrial engines.
Design, develop, test, and deploy Java/Spring Boot applications; experience with SQL, Hibernate/JPA/Spring Data, Snowflake, AWS or Azure, microservices, Docker/Kubernetes, CI/CD and Playwright; mentoring experience; up to 10% travel.
Java, Spring Boot, AWS, Azure, SQL, Hibernate, JPA, Spring Data, Snowflake, Playwright, Docker, Kubernetes, React, Angular, CI/CD, DevOps
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2w
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API Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
8+ YOE8+ years Java/J2EE experience building RESTful APIs using Spring Boot and microservices; experience with DevOps, Kafka, IBM MQ, SQL/NoSQL and cloud platforms required.
Java, J2EE, Spring Boot, Microservices, REST API, Angular, XML, JSON, Swagger, Jenkins, uDeploy, GIT, Kafka, IBM MQ, SQL, No Sql, AWS, Azure, GitHub, CI/CD, React, JavaScript, HTML, CSS, JSON Web Token (JWT), UML, XPath
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5d
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Mid-Level Software Engineer
United States or Westminster or Herndon
$105k-$177k/yr RemoteFull Time
Vantor
Vantor: Providing AI-powered spatial intelligence and high-resolution Earth observation.
4+ YOEU.S. citizen with active Top Secret (or CBP/DHS suitability) clearance, bachelor\u0002s degree or equivalent, 4+ years software development experience, proficiency in Java/Rust and Python/JavaScript/TypeScript, and experience with agile tools.
Java, Rust, Python, JavaScript, TypeScript, Jira, Confluence, git, Apache Flink, Apache Kafka, React, Next, Leaflet, Map Libre, Redux, AWS, Azure, Google Cloud, OpenStack, Kubernetes, Docker, Jenkins, ArgoCD, Harness, GitLab CI, GitHub Actions, PostgreSQL, Apache Iceberg
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