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43 software intern jobs at 25 companies in Thornton, CO

1d
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Software Engineering Intern (Spring 2027)
Golden, Colorado, United States
OnsiteFull Time
Rendezvous Robotics
Rendezvous Robotics: Develops self-assembling modular tiles for in-space infrastructure.
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
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8h
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IT Intern - Software Development & Automation Intern - In Office
Aurora, Colorado, United States
$20/hr OnsiteFull Time
Wagner Equipment Co.
Wagner Equipment Co.: Sells and rents Caterpillar heavy equipment and provides maintenance services.
Pursuing or recent degree in IT/CS or related, high school diploma/GED required, strong problem-solving, communication, Microsoft Office proficiency, ability to learn new technologies, detail-oriented.
Microsoft Power Platform, Microsoft SharePoint Online, Power BI, Microsoft 365, Azure DevOps, SQL, REST APIs, GitHub, Python, C#, JavaScript, Microsoft Office
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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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3d
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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
Western Digital
Western DigitalNASDAQ: WDC: Design and manufacture data storage devices and systems.
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
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1w
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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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2w
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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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1mo
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Advisory Linux Systems Software Engineer
Boulder, Colorado, United States
$93k-$100k/yr HybridFull Time
Ricoh
RicohTokyo Stock Exchange: 7752: Provides digital workplace services, imaging equipment, and IT solutions.
5+ YOE5+ years developing low-level Linux systems software; strong C/C++; Python/Bash scripting; deep Linux internals, system bring-up, debugging, and hardware/software integration; bachelor's degree in CS/CE/EE or related.
Linux, C, C++, Python, Bash, GitLab, JIRA, Claude Code
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3mo
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AI Engineering Intern
Boulder, Colorado, United States
$17-$25/hr OnsiteFull Time, Internship
TIFIN
TIFIN: AI platform for personalized wealth management and investment advice.
Pursuing or recently completed BS/MS in CS, engineering or related; strong Python; familiarity with machine learning/AI, APIs, and backend development via internships, coursework or research.
Python
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1mo
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Expert CNO Software Engineer
Hanover or Aurora
$142k-$236k/yr OnsiteFull Time
ManTech
ManTech: Provides technology solutions for defense and intelligence agencies.
20+ YOERequires TS/SCI w/ polygraph, 20+ years technical experience (BS +20 or HS +24), expertise in Python and C/C++, low-level system internals, TCP/IP, debugging, and developing CNO capabilities.
Python, C/C++, assembly, JIRA, Confluence, Crucible, TCP/IP
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2d
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Civil Engineering Intern
Fort Collins, Colorado, United States
$27-$29/hr OnsiteInternship
Kimley-Horn
Kimley-Horn: Provides professional planning, engineering, and design consulting services.
Enrolled in an ABET-accredited bachelor's or master's engineering program; ability to use civil design software; collaborate with project teams and learn regulations and standards.
AutoCAD, Revit, Civil 3D, Microsoft Excel, Microstation, VISSIM, Open Roads, Synchro, GIS
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2d
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Transportation Intern (Summer 2027)
Denver, Colorado, United States
$23-$28/hr OnsiteFull Time, Temporary
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
Currently enrolled in an undergraduate or graduate engineering program; attention to detail, problem-solving and communication skills; basic Microsoft Office; preferred 2 years toward degree and 3.0+ GPA; knowledge of industry software.
Microsoft Office
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2mo
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Mission Operation Intern Fall 2026
Littleton or Long Beach
$25/hr OnsiteInternship
Rocket Lab
Rocket LabNasdaq: RKLB: Operates launch vehicles and manufactures satellites for space missions.
0.25+ YOEEnrolled in bachelor’s, master’s, or doctoral program in aerospace/aeronautical/mechanical/software engineering; 3+ months engineering experience; GPA 3.0+; proficient in Python, Linux, Git.
Python, Linux, Git
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2d
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Risk Advisory Intern | Summer 2027 | BP
Denver, Colorado, United States
$20-$40/hr OnsiteInternship
CBIZ
CBIZNYSE: CBZ: Provides financial, tax, and business advisory services to organizations.
Working toward a bachelor's degree; strong interpersonal, analytical, research, project management, verbal and written communication skills; ability to multitask and problem-solve; proficiency with Microsoft Office and audit software.
Microsoft Office, Microsoft Outlook
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3w
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Intern - Documentation Specialist
Montreal or Denver or Canada or United States or India
$18/hr HybridInternship, Full Time
Vertafore
VertaforeNYSE: ROP: Provides cloud-based software solutions for the insurance industry.
Currently enrolled post-secondary student in a related field; strong written English/French skills; ability to review, update, and restructure technical product documentation; comfort learning software and capturing screenshots.
Microsoft Office, SharePoint
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2mo
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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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1w
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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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1d
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Director, Internal Audit, Global
United States or Denver or Phoenix or Quincy or Santa Clara or Ashburn or Shackelford County or Port Washington
$180k-$210k/yr RemoteFull Time
Vantage Data Centers
Vantage Data Centers: Provides hyperscale data center campuses for cloud and AI providers.
12+ YOEBachelor's in accounting/finance/construction management, 12+ years internal audit experience, CPA/CIA/CCA preferred, strong analytical and communication skills, proficiency with audit software and Microsoft Office.
Microsoft Office Suite
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2mo
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IT Help Desk Tier 1
Dallas or Orlando or Doral or Denver or Chicago or Owings Mills or Arlington or Richmond or Charlotte or North Charleston or Jacksonville or Nashville or Cleveland
OnsiteFull Time
DEX Imaging
DEX Imaging: Sells and services office printers and document management software.
2+ YOEProvide first-line IT support to internal users; troubleshoot hardware/software issues; remote assistance; onboarding hardware setup.
Windows, Mac OS X, Google Workspace, Office 365, VPN, TCP/IP
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1mo
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Senior Product Manager, Internal Tools
Denver or Costa Mesa
$141k-$191k/yr OnsiteFull Time
Anduril Industries
Anduril Industries: Defense technology building autonomous military hardware and software.
6+ YOE6+ years in software/product management or internal tools/platform roles, strong technical fluency, builder orientation with AI tooling, roadmap and stakeholder ownership, degree or equivalent, U.S. Person required, eligible for Secret clearance.
Lattice OS
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3mo
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Water Resources Engineer, Entry Level - WR0020
Greenwood Village, Colorado, United States
$72k-$85k/yr OnsiteFull Time
Felsburg Holt & Ullevig
Felsburg Holt & Ullevig: Provides transportation planning and civil engineering consulting services.
0+ YOEBachelor’s in civil engineering; 0-2 years experience; AutoCAD/Civil3D/Bentley OpenRoads; hydrology/hydraulics software; Engineering Intern Certification required.
AutoCAD, Civil 3D, Bentley OpenRoads Designer, HEC-HMS, HEC-RAS, CUHP, FlowMaster, SewerGems, EPA SWMM
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