14 software engineering intern jobs at 12 companies in Castle Rock, CO
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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
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
2w
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Software Engineering Intern (Spring 2027)
Golden, Colorado, United States
OnsiteFull Time
Currently pursuing CS/CE or related degree; comfortable with C, C++, and Python; understanding of networking and distributed systems; experience with embedded Linux or bare-metal firmware.
C, C++, Python, embedded Linux
2w
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Software Engineering Intern (Fall 2026)
Golden, Colorado, United States
OnsiteFull Time
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
2w
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Civil Engineering Intern
Colorado Springs, Colorado, United States
$27-$29/hr OnsiteInternship
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
2w
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Summer 2027 - Software Engineering Internship
Colorado Springs or Irvine or Longmont or Fremont or Rochester or San Jose
$35-$46/hr OnsiteInternship
Currently pursuing a Bachelor's or Master's in a technical field, experience with one or more programming languages (C,C++,Python,Java,Go,SQL,JavaScript), strong problem-solving and communication skills.
C, C++, Python, Java, Go (Golang), SQL, JavaScript, Microsoft Office, Git, Linux, IDEs
3w
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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
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).
2mo
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Software Engineer, Infrastructure/Developer Tooling (Hybrid)
Toronto or Denver
$109k-$128k/yr HybridFull Time
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
3d
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Drafter Intern
Lakewood, Colorado, United States
OnsitePart Time, Internship
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
1mo
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Senior Software Engineer
Warrenton or Colorado Springs or Florida
$110k-$150k/yr HybridFull Time
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
1w
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Staff Linux Software Engineer (Multiple Locations)
San Diego or Boulder
$135k-$202k/yr OnsiteFull Time
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
2w
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Graduate Intern - LLM Reliability and Uncertainty for AI Science Assistants
Golden or United States
$45k-$71k/yr HybridFull Time
Graduate-level intern with GPA≥3.0, enrolled or recent graduate status, familiarity with LLMs, uncertainty quantification, Python on HPC/multi-GPU, strong software engineering and research skills.
Python, HPC, LLM
3d
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Advisory Linux Systems Engineer
Boulder, Colorado, United States
$93k-$100k/yr HybridFull Time
5+ YOE5+ years developing low-level Linux systems software; strong C/C++; Python/Bash scripting; Linux internals, system bring-up, debugging, and hardware/software integration.
C, C++, Python, Bash, GitLab, JIRA, Claude Code
1mo
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Associate CNO Developer
Hanover or Aurora
$77k-$128k/yr OnsiteFull Time
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
2mo
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CNO Developer
Hanover or Aurora
$115k-$190k/yr OnsiteFull Time
2+ YOEBS+4yrs or MS+2yrs or HS+8yrs; experience with Python or C/C++; troubleshooting and debugging; networking, low-level system internals, reverse engineering and Atlassian tools preferred; active TS/SCI w/Poly required.
Python, C, C++, TCP/IP, JIRA, Confluence, Crucible, Assembly