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41 intern software jobs at 26 companies in Castle Rock, CO

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Summer 2027 Intern - Software Engineering
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$35-$46/hr OnsiteInternship
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
0+ YOECurrently pursuing a bachelor's or master's degree in a technical field, with programming experience in languages such as C, C++, Python, Java, Go, SQL, or JavaScript and knowledge of software fundamentals.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs, operating systems, compilers, databases
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1w
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Software Engineering Intern – Summer 2027
Fridley or Tempe or Eatontown or Santa Rosa or Lafayette or Boulder or Plymouth or Mounds View or Irvine or North Haven or Memphis or Newton or Dexter or Santa Ana or Mansfield or Fort Worth or Minneapolis or Brooklyn Center or Jacksonville or Boston or Brooklyn Park
$27-$45/hr OnsiteFull Time
Medtronic
MedtronicNew York Stock Exchange: MDT: Develops and manufactures medical devices and digital health solutions.
Currently pursuing BS/MS in computer/software engineering or related with anticipated graduation 2027–2029; full-time internship availability June–Aug; U.S. work authorization required; 3.0 GPA preferred; experience with programming/projects preferred.
C, C++, C#/.NET, SQL, JavaScript, Java, Python, Swift, HTML/CSS, Microsoft Visual Studio, Jenkins, GitLab
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3w
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Software Engineering Intern (Fall 2026)
Golden, Colorado, United States
OnsiteFull Time
Rendezvous Robotics
Rendezvous Robotics: Develops self-assembling modular tiles for in-space infrastructure.
Pursuing degree in CS/CE or related; comfortable in C/C++ and Python; understanding of networking/distributed systems; experience with embedded Linux or bare-metal firmware; ITAR-eligible.
C, C++, Python, Embedded Linux
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2mo
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Software Engineer, Infrastructure/Developer Tooling (Hybrid)
Toronto or Denver
$109k-$128k/yr HybridFull Time
Homebase
Homebase: Provides scheduling, payroll, and HR software for hourly teams.
3+ YOE3+ years of software or infrastructure engineering; experience with internal tooling, cloud (AWS) and CI/CD; frontend/backend versatility; strong developer experience focus.
Ruby, Golang, Terraform, AWS, CI/CD, Observability, Infrastructure as Code, Containerization
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2d
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2026 Intern Conversion - Software Development Engineer I
Seattle or Van Horn or Denver or Huntsville or Arlington or Los Angeles or Longmont or Reston or Florida
$101k-$155k/yr OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
Completed a 2026 Blue Origin internship, enrolled in or recently graduating from college, B.S. in mechanical, aerospace, or astronautical engineering, and eligible to work under U.S. export controls.
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4w
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2027 North America Software Engineering Internship
Bellevue or Boulder or Denver or Irvine or New York or Seattle
$46-$62/yr HybridInternship
The Trade Desk
The Trade DeskNASDAQ: TTD: Cloud-based programmatic advertising platform for data-driven media buying.
Enrolled in a Bachelor's or Master's program, expected to graduate 2027–2028; fluent in one or more object-oriented languages; strong data structures and algorithms; available to work 3 days in office (Tue–Thu).
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1mo
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Undergraduate/graduate intern - software and data infrastructure for autonomous thin film experimentation (Year-Round)
Golden, Colorado, United States
$35k-$56k/yr OnsitePart Time
National Laboratory of the Rockies
National Laboratory of the Rockies: Conducts applied research in energy systems and technology innovation.
Enrollment in an accredited bachelor’s or master’s program (or recent graduate), 3.0+ GPA, programming experience in Python, familiarity with version control (Git), strong analytical and communication skills.
Python, Git, OPC UA, Modbus, MQTT, TCP/IP, SCPI
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2w
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Staff Linux Software Engineer (Multiple Locations)
San Diego or Boulder
$135k-$202k/yr OnsiteFull Time
Qualcomm
QualcommNASDAQ: QCOM: Designs and manufactures semiconductors and wireless telecommunications products.
2+ YOEExperience developing Linux system software and drivers in C/C++; strong understanding of Linux internals, multi-threading, API design, SoC architecture; proficiency with git and debugging tools.
Linux, C, C++, Java, Python, git, KVM, Docker, SR‑IOV, gtest, PCIe, UML
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2mo
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Senior Software Engineer
Warrenton or Colorado Springs or Florida
$110k-$150k/yr HybridFull Time
Auria
Auria: Engineering and software solutions for space and defense missions.
5+ YOEActive Secret clearance and US citizenship required; 5+ years systems engineering; Bachelor's in CS or equivalent; strong Python (asyncio), C++ (C++17/20), pybind11/Cython, Kubernetes/Docker, Linux internals, CI/CD (ArgoCD, GitHub Actions), Prometheus/Grafana.
Python, asyncio, C++, pybind11, Cython, Kubernetes, Docker, ArgoCD, GitHub Actions, Prometheus, Grafana, CMake, GitLab CI/CD
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1d
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College Intern
Loveland or Denver or Colorado Springs
$18-$23/hr OnsitePart Time
Wilson & Company
Wilson & Company: Provides engineering and architecture services for infrastructure development.
Junior or senior engineering student with Microsoft Office knowledge, strong communication and problem-solving skills, dependability, teamwork, and ability to work onsite; design software knowledge is preferred.
Microsoft Outlook, Microsoft Word, Microsoft Excel, MicroStation, InRoads, AutoCAD, Civil3D
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1w
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Drafter Intern
Lakewood, Colorado, United States
OnsitePart Time, Internship
Schweitzer Engineering Laboratories
Schweitzer Engineering Laboratories: Manufactures digital systems that protect and automate power grids.
Requires programming and scripting experience, knowledge of three-phase power systems, emulators, logic analyzers, protective relays, automation controllers, Windows, serial terminal software, and Microsoft Visio.
Microsoft Windows, Microsoft Visio
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3w
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Civil Engineering Intern
Colorado Springs, Colorado, United States
$27-$29/hr OnsiteInternship
Kimley-Horn
Kimley-Horn: Provides professional engineering, planning, and design consulting services.
Currently pursuing an ABET-accredited Bachelor's or Master's in engineering (civil/environmental or related), familiarity with civil design software, and ability to analyze and QC deliverables for projects.
AutoCAD, Revit, Civil 3D, Microsoft Excel, Microstation, VISSIM, Open Roads, Synchro, GIS
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2d
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Controls Technician Intern
Littleton, Colorado, United States
$24-$28/hr FieldInternship
LONG Building Technologies
LONG Building Technologies: Provides commercial HVAC, building automation, and security solutions.
Must be 18+, legally able to drive a company vehicle, and able to interpret mechanical plans, troubleshoot software and integrations, handle physical jobsite work, and travel to jobsites.
HVAC, building automation, control systems, energy management
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2d
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Retail Management Intern
Bennett, Colorado, United States
OnsiteInternship
Love's Travel Stops & Country Stores
Love's Travel Stops & Country Stores: Operates a nationwide network of travel stops and convenience stores.
Currently enrolled in a 2- or 4-year business, management, hospitality, or related program; able to pass drug screening and background checks and perform customer-facing physical duties.
computer programs, systems, technology tools
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2d
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Full Stack Engineer Intern
Denver, Colorado, United States
$600-$800/mo RemoteInternship
Gesture
Gesture: AI-driven platform for tangible marketing and consumer gifting.
Currently pursuing a computer science, software engineering, or related degree; familiarity with React and Node.js, Python, or similar; understanding of REST APIs, databases, Git, and software development practices.
React, Node.js, Python, REST APIs, Git
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1d
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AI Full Stack Engineer Intern
Denver or New York City
$400-$1k/mo OnsiteFull Time, Internship
Gesture
Gesture: AI-driven platform for tangible gifting and product marketing.
Pursuing a computer science or software engineering degree; experience with LangChain or LangGraph, frontend/backend development, REST APIs, databases, Git, and strong problem-solving skills.
LangChain, LangGraph, Firebase, Express, React, Node.js, Google Cloud Platform (GCP), Python, REST APIs, Git
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12h
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Intern I - Active Adult Center Cook
Thornton, Colorado, United States
$16-$21/hr OnsitePart Time, Temporary
City of Thornton
City of Thornton: Provides essential municipal services and infrastructure for Thornton residents.
No experience necessary. Requires office software skills, Windows, Word, Excel, internet research, communication, data handling, and ability to perform standing, walking, light lifting, and repetitive tasks.
Microsoft Windows, Microsoft Word, Microsoft Excel
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3mo
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Senior Product Architect
San Francisco or Denver
$185k-$251k/yr OnsiteFull Time
Contentful
Contentful: SaaS platform for headless content management and delivery.
7+ YOE7-10 years building and operating production web apps; strong TypeScript, React/Next.js, Node.js; API design; architecture and leadership; internal tools focus.
TypeScript, React, Next.js, Node.js, API design, serverless, containers, observability, design system
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1mo
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Associate CNO Developer
Hanover or Aurora
$77k-$128k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
4+ YOEBS in technical discipline or HS + 4 years technical experience; experience in Python or C/C++; troubleshooting and debugging; TS/SCI with polygraph required; networking, low-level internals, and reverse engineering preferred.
Python, C, C++, JIRA, Confluence, Crucible
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4w
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Senior, Compliance & Internal Auditor
Denver, Colorado, United States
$75k-$90k/yr OnsiteFull Time
Spectrum Retirement Communities
Spectrum Retirement Communities: Operates senior living, assisted living, and memory care communities.
5+ YOEBachelor's in accounting/finance required, 5+ years in internal audit/compliance/public accounting, CIA or CPA preferred, experience with system implementations, IT audit, Yardi Voyager, and auditing software.
Yardi Voyager, auditing software
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