81 app developer jobs at 56 companies in Castle Rock, CO

PromotedHiringCafe
Founding Full-stack / Product Engineer
Cupertino, CA, US
$130k-$300k/yr On-SiteFull Time
HiringCafe
HiringCafe: Building a 100× better job search engine to take on Indeed and LinkedIn.
Help us build a 100× better job search engine. We need a full-stack engineer with great taste, sharp fundamentals, and a track record of shipping polished product on React/Next.js plus a real backend (Firebase, Elasticsearch, Redis, Stripe).
React, Next.js, TypeScript, Firebase, Elasticsearch, Redis, Stripe
2w
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App Engineer
Denver, Colorado, United States
$100k-$115k/yr HybridFull Time
Janus Henderson
Janus HendersonNYSE: JHG: Provides global asset management and investment advisory services.
Proficient PHP and WordPress multisite development, React/Gutenberg block development, SCSS/CSS, JavaScript (ES6+), Git, Composer, npm, Docker, Jira; experience working in Agile teams and integrating third-party APIs.
PHP, WordPress, WordPress VIP, React, JavaScript (ES6+), SCSS, Git, Docker, Composer, npm, Jira, GitHub Copilot, PHP Unit, Veracode
1w
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Senior Software Engineer - IBM App Connect Enterprise
Irving or Middleton or Denver or Seattle
$95k-$150k/yr HybridFull Time
Paradigm
Paradigm: A software transforming residential and construction industries with modern engineering and cloud-native integration solutions.
4+ YOE4+ years software engineering with hands-on IBM App Connect Enterprise, ESQL/Java, integration patterns, APIs, messaging (MQ/Kafka), Kubernetes/OpenShift, CI/CD and strong troubleshooting skills.
IBM App Connect Enterprise, ACE, ESQL, Java, REST, SOAP, IBM MQ, MQ, Kafka, DFDL, JSON, XML, Docker, Kubernetes, Red Hat OpenShift, Git, Jenkins, Tekton, UrbanCode, AppDynamics, Splunk, ELK, HTTP(S), JDBC
3d
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Senior Android Engineer, MLB App Feature Teams
Boulder, Colorado, United States
$150k-$185k/yr OnsiteFull Time
Major League Baseball
Major League Baseball: Professional sports league governing North American baseball teams and media.
6+ YOE6+ years building production Android apps with Kotlin, Android SDK, Jetpack Compose, coroutines, modular architecture, REST/GraphQL integration, strong testing discipline, observability, and practical GenAI tooling experience.
Kotlin, Android SDK, Jetpack Compose, coroutines, REST, GraphQL, Firebase, Datadog, Figma, GitHub Copilot, Git
2mo
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Senior Application Developer
Aurora, Colorado, United States
$85k-$95k/yr HybridFull Time
University of Colorado
University of Colorado: Public research university providing higher education and healthcare services.
2+ YOESenior developer for identity and access management; design, develop, and support secure, multi‑system web apps with identity/authentication integrations.
ASP.NET, NodeJS, MVC, TypeScript, Angular, Vue, React, MySQL, Oracle, MSSQL Server, Java, Python, Ruby, C#
2mo
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Software Engineer
Aurora, Colorado, United States
$69k-$158k/yr HybridFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Consulting and technology services for government and commercial clients
2+ YOE2+ years in software development; experience modernizing legacy apps to microservice architecture; TS/SCI clearance; Bachelor's degree.
Java, Python, Go, Rust, Docker, Kubernetes, AWS, Azure, Google Cloud, C, C++, C#, JavaScript, React, Node.js
4d
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Junior Application Developer
Denver or Springfield or Sterling or St. Louis
$53k-$106k/yr OnsiteFull Time
CACI International
CACI InternationalNYSE: CACI: Provides information technology and engineering services for government agencies.
0+ YOEBachelor's or equivalent, 0–3 years development experience, experience with Java and/or Python, familiarity with web apps and relational databases, TS/SCI clearance with polygraph required.
Java, Python, ArcGIS, GeoServer, OpenLayers, Cesium, Git, CI/CD, containerization
4d
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Dynamics Developer II
Greenwood Village, Colorado, United States
$111k-$140k/yr OnsiteFull Time
ISEC
ISEC: Installs architectural woodwork and specialty finishes for commercial buildings.
3+ YOE3+ years experience developing business applications or cloud system administration; strong Dynamics 365, Power Apps/Automate, Dataverse, and SharePoint skills; bachelor's degree or equivalent experience.
Microsoft Dynamics 365, Power Apps, Power Automate, SharePoint, Dataverse
1mo
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Lead Engineer I, Development
Denver or Atlanta
HybridFull Time
KPMG
KPMG: Global professional services network providing audit, tax, and advisory.
5+ YOEMinimum five years software development experience; bachelor’s degree required (master’s preferred). Experience with microservices, REST APIs, Python/.NET/C#/Angular/TypeScript, SQL and Azure; ML framework experience preferred.
Angular, TypeScript, Python, .NET, C#, SQL, T-SQL, Azure, App Services, Functions, SQL Database, DevOps, Azure OpenAI, PyTorch, TensorFlow, scikit-learn
1mo
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Agentic AI Engineer
Golden or Houston
HybridFull Time
Fervo Energy
Fervo Energy: Generates clean electricity using advanced geothermal drilling technology.
2+ YOEBachelor’s or Master’s in Computer Engineering or Data Science; 2+ years building agentic AI/LLM apps; strong Python; experience with agent frameworks; cloud experience (Azure/AWS); CI/CD; Docker; observability.
Python, FastAPI, LangChain, LangGraph, LlamaIndex, AutoGen, Semantic Kernel, Anthropic Claude, OpenAI, Azure OpenAI, vector databases, pgvector, Pinecone, Weaviate, Chroma, Databricks, Snowflake, dbt Semantic Layer, Docker, Terraform, Git, CI/CD, Streamlit, Gradio, React, Entra ID, Key Vault, App Service, Azure, Azure Data Lake Storage (ADLS), Azure Data Factory
3w
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Senior iOS Developer
Pittsburgh or Cleveland or Dallas or Birmingham or Phoenix or Denver
$71k-$157k/yr OnsiteFull Time
CGI
CGINYSE: GIB: Provides information technology and business consulting services.
7+ YOE7+ years mobile development; 5+ years iOS with Swift, Swift UI and Objective C; experience with XCode, Core Data, RESTful APIs, Git, unit testing frameworks, app architecture (MVC/MVP/MVVM), and biometric/device capabilities.
Swift, Swift UI, Objective C, XCode, Core Data, Core Animation, XCTestFramework, XCUITestFramework, Git, Java, JSON, RESTful APIs, MVC, MVP, MVVM
2w
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Software Engineer
Denver, Colorado, United States
$115k-$135k/yr HybridFull Time
Litera
Litera: AI-powered document and workflow software for legal professionals.
3+ YOE3+ years professional software engineering experience; bachelor's degree in CS/Software Engineering or equivalent; experience with full‑stack web apps, APIs, source control, Agile, and AI-assisted development.
Azure, AWS, Google Cloud, CI/CD, containerization, AI-powered development tools, GenAI, Agile
1w
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Applications Engineer III - Full Stack Developer
Louisville, Colorado, United States
$95k-$166k/yr HybridFull Time
Arcfield
Arcfield: Systems engineering and mission support for defense and space.
5+ YOEBachelor's in engineering/computation plus 5+ years (or MS/PhD equivalents), strong experience with containerized and desktop app development, git and CI/CD, C/C++/Python/Rust/Bash, and familiarity with communication protocols.
C, C++, Python, Rust, Bash, Git, Docker, Docker Compose, Podman, Kubernetes, CI/CD, JavaScript, HTML, React, AWS, Azure, Google Cloud Platform (GCP)
1mo
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Software Engineer
Aurora, Colorado, United States
$87k-$198k/yr OnsiteFull Time
Booz Allen Hamilton
Booz Allen HamiltonNYSE: BAH: Provides technology and management consulting services to diverse organizations.
5+ YOETS/SCI clearance required; HS/GED +10+ yrs or Bachelor’s +5+ yrs software engineering; experience with containerized apps, LLMs, cloud development, Git, and automation/requirements capture; willingness to take a polygraph.
Git, AWS Bedrock, SageMaker, Lambda, API Gateway, DynamoDB, S3, IAM, Kubernetes, Helm, Terraform, Python, Java, LLMs
3mo
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Software Engineer II
Atlanta or Austin or Boston or Chicago or Denver or New York or San Francisco or United States
$115k-$188k/yr HybridFull Time
Iterable
Iterable: AI-powered customer engagement and cross-channel marketing automation platform.
3+ YOE3+ years software development; proficient in Scala and/or Java; building production-ready web apps; Elasticsearch and Postgres experience; strong collaboration in a distributed environment; English fluency; willingness to on-call.
Scala, Elasticsearch, Postgres, Redis, CRDB, Pulsar, Kafka, AWS, Docker, Kubernetes, React
3mo
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Lead Java Software Engineer
Phoenix or San Francisco or Chicago or Denver or Salt Lake City or Madison
$85k-$160k/yr RemoteFull Time
Resource Innovations
Resource Innovations: Provides clean energy services and software solutions for utilities.
8+ YOE8+ years software development; Java/Spring Boot; cloud-based enterprise apps; strong analytical, communication, and independent working skills.
Java, Python, Spring Boot, MySQL, NoSQL, OpenSearch, Elasticsearch, Apache Camel, RabbitMQ, Data pipelines, AWS, Kubernetes, CI/CD, REST, SOAP, Microservices
3mo
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Senior Mobile Engineer
Denver, Colorado, United States
$150k-$250k/yr HybridFull Time
Zero Homes
Zero Homes: Platform for planning and managing residential electrification and heat pump installations.
5+ YOE5+ years of professional software engineering; strong experience with native mobile apps (iOS/Swift, Android/Kotlin); familiarity with AI tools in development; customer-centric mindset; ability to work asynchronously and in person within 50 miles of Denver, CO.
Swift, Kotlin, SwiftUI, Jetpack Compose, PostHog
1mo
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Senior Engineer I-Software
Colorado Springs, Colorado, United States
$70k-$105k/yr OnsiteFull Time
Microchip Technology
Microchip TechnologyNasdaq: MCHP: Manufacturer of microcontrollers, analog, and mixed-signal integrated circuits.
5+ YOEBachelor's or master's in computer science or related, 5+ years software development, experience with .NET, SQL, enterprise apps, technical leadership and mentoring, ability to work onsite in Colorado Springs and occasional off-hour global meetings.
Microsoft .NET, Visual Studio, C#, ASP.NET, Visual Basic, MVC, Web API, WCF, JavaScript, jQuery, HTML5, CSS3, SQL, Oracle, Microsoft SQL Server, SSRS, SSIS, Microsoft O365, Team Foundation Server, ETL
1mo
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Software Engineer
Colorado Springs, Colorado, United States
$143k-$173k/yr OnsiteFull Time
Infinity Systems Engineering
Infinity Systems Engineering: Provides specialized systems engineering and mission operations for aerospace programs.
5+ YOEJava with Spring Boot, React; containerized apps in Kubernetes; CI/CD; TS/SCI Poly; on-site role.
Java, Spring Boot, React, Kubernetes, Docker, Ansible, GitLab, MongoDB, SQL, C++
1w
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Senior Android Engineer (Fable Core)
San Francisco or Ottawa or Phoenix or Toronto or Los Angeles or Denver or Salt Lake City or Atlanta or Chicago or Houston or Portland or New York City or Vancouver or San Diego or Washington, D.C. or Sacramento or Jacksonville or Seattle or Mexico City or Austin or Miami or Boston or Dallas
$124k-$226k/yr HybridFull Time
Scribd
Scribd: Subscription-based digital library for e-books, audiobooks, and documents.
5+ YOE5+ years Android development experience; strong Kotlin, Jetpack Compose, Coroutines/Flow; modern Android architecture (MVVM/MVI); experience shipping consumer apps; mentorship and cross-functional collaboration skills.
Kotlin, Jetpack Compose, Coroutines, Flow, MVVM, MVI, Firebase
2mo
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Sr. Software Engineer - Mixed Portfolio Foundation
Santa Barbara or Dallas or San Diego or Remote United States or San Francisco or Denver or Atlanta or Chicago or Washington, D.C.
$138k-$173k/yr RemoteFull Time
AppFolio
AppFolioNASDAQ: APPF: Provides cloud-based property and investment management software.
5+ YOE5+ years of experience building web-based SaaS apps; strong data modeling; proficient with Ruby on Rails, React, MySQL, AWS; agile processes; test-driven development.
Ruby on Rails, React, MySQL, AWS, SOA