35 fall intern jobs at 15 companies in Denver, CO

6d
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Fall 2026 CADD Intern- Renewables
Greenwood Village, Colorado, United States
$20-$22/hr HybridInternship
Ulteig
Ulteig: Provides engineering and technical services for critical infrastructure sectors.
Two-year technical degree or enrollment; proficiency in AutoCAD; familiarity with Civil 3D and GIS a plus; Microsoft Office competency; authorization to work permanently in the U.S.; minimum 8–10 hrs/week availability in Fall.
AutoCAD, Civil 3D, GIS, Microsoft Outlook, Microsoft Word, Microsoft Excel, Microsoft PowerPoint, Microsoft Access
3w
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2026 Fall Intern, Tax
Denver, Colorado, United States
$20-$24/hr OnsiteInternship, Full Time
Frontier Airlines
Frontier AirlinesNasdaq: ULCC: Provides low-fare passenger air transportation services across the Americas.
Undergraduate (sophomore+) or graduate students studying accounting/tax or related fields; familiarity with Microsoft Excel and Word; detail-oriented with communication and problem-solving skills.
Microsoft Excel, Microsoft Word
1mo
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Design Intern (Fall 2026)
Denver, Colorado, United States
OnsiteInternship
HDR
HDR: Global provider of engineering, architecture, environmental and construction services.
Must be currently enrolled in an undergraduate or graduate program; 2 years completed toward degree and 3.0+ GPA preferred. Requires attention to detail, problem-solving, communication, and basic Microsoft Office skills.
Microsoft Office
1mo
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Design Intern (Fall 2026)
Denver, Colorado, United States
$18-$30/hr OnsiteFull Time, Temporary
HDR
HDR: Global firm providing architecture, engineering, and environmental services.
Must be currently enrolled in an undergraduate or graduate program; attention to detail, strong problem-solving and communication skills, basic Microsoft Office skills; preferred 2 years toward degree and 3.0+ GPA.
Microsoft Office
1d
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GNC Intern (Fall 2026)
Golden, Colorado, United States
OnsiteFull Time
Rendezvous Robotics
Rendezvous Robotics: Develops self-assembling modular tiles for in-space infrastructure.
Pursuing an engineering/physics/math degree with coursework in dynamics and controls; working knowledge of Python, C++, or MATLAB/Simulink; understanding of rigid-body dynamics and electromagnetics; strong communication and analytical skills.
Python, C++, MATLAB, Simulink, Git
1mo
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Fall 2026 Operations Intern- Supply Chain
Denver or Carson
OnsiteTemporary
The Kroger Co.
The Kroger Co.NYSE: KR: Operates supermarkets, pharmacies, and jewelry stores across America.
Open to all majors; pursuing a degree; US work authorization without visa sponsorship; strong leadership, communication, and MS Office; multitasking and prioritization.
Microsoft Office Suite
2w
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2L Fall Intern (District Attorney’s Office)
Castle Rock, Colorado, United States
$21/hr OnsiteInternship
Douglas County
Douglas County: Providing local government services and public safety for county residents.
Current 2L law student who completed first year, eligible for Student Practice Act internship, able to work semester schedule (typically 8-hr days, 2–3 days/week), no prior experience required.
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
2w
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3L SPA Fall Intern (District Attorney’s Office)
Castle Rock, Colorado, United States
$21/hr OnsiteFull Time, Temporary
Douglas County
Douglas County: Provides essential public services and infrastructure to Colorado residents.
Must be a current 3L law student qualified under the Student Practice Act prior to start; experience not required; work during semester ~8 hours/day, 5 days/week (schedule accommodations possible).
1mo
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Applied Research Intern - Water (Fall 2026)
Denver, Colorado, United States
$23-$35/hr FieldMultiple Commitments Available
Stantec
StantecToronto Stock Exchange / New York Stock Exchange: STN: Global design, engineering, and environmental consulting firm.
Currently enrolled in a B.S. or higher in environmental/chemical engineering or related, lab and research experience, wet chemistry and sampling experience, strong analytical and communication skills, proficiency with Microsoft Excel/Word/PowerPoint.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint
1mo
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Applied Research Intern - Water (Fall 2026)
Denver, Colorado, United States
$23-$35/hr FieldMultiple Commitments Available
Stantec
StantecTSX: STN: Provides professional engineering, architecture, and environmental consulting services.
0+ YOECurrently enrolled in a B.S. or higher in environmental/chemical engineering (or related) with lab and research experience; wet chemistry, sampling, analytical testing, data analysis, and strong written/oral communication.
Microsoft Excel, Microsoft Word, Microsoft PowerPoint
1mo
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Mechanical Engineer Intern/Co-op Fall 2026 - Energy Solutions
Baltimore or Fairfax or Nashville or Media or Louisville or Golden
OnsiteInternship
Legence
LegenceNASDAQ: LGN: Provides engineering and maintenance services for mission-critical building systems.
Pursuing a mechanical engineering undergraduate degree from an ABET-accredited university (min GPA 3.39). Proficiency with Microsoft Word and Excel; CAD helpful. Strong communication, teamwork, and ability to travel locally for field work.
CAD, Microsoft Word, Microsoft Excel
1mo
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Mechanical Engineer Intern/Co-op Fall 2026 - Energy Solutions
Media or Louisville or Baltimore or Golden or Nashville or Fairfax
OnsiteInternship
Legence
LegenceNasdaq: LGN: Engineering and maintenance services for mission-critical building systems.
Pursuing ABET-accredited undergraduate engineering degree (min GPA 3.39). Proficiency with Microsoft Word and Excel; CAD experience helpful. Strong communication, ability to travel locally for field work. No sponsorship available.
CAD, Microsoft Word, Microsoft Excel
3w
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Sports Management Internship - Fall 2026
Denver, Colorado, United States
OnsiteInternship
Volo Sports
Volo Sports: Organizing social sports leagues and community fitness events.
Currently enrolled in college or recently graduated; strong communication, customer service, and teamwork skills; passionate about sports; able to perform field setup, data entry, and clerical tasks; internship taken for college credit.
1d
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2026 Legal & Contracts Fall Internship
Westminster, Colorado, United States
$20-$29/hr OnsiteInternship
Advanced Space
Advanced Space: Provides mission design and navigation software for space missions.
Pursuing undergraduate or graduate degree in law, legal studies, business, public policy, or related field; strong analytical writing; basic risk assessment and project management experience; U.S. Person required; able to work onsite in Westminster, CO.
FAR, DFARS, ITAR, EAR
4w
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Fall Legal Student Internship - Low Income Taxpayer Clinic
Denver, Colorado, United States
OnsitePart Time
Colorado Legal Services
Colorado Legal Services: Provides free civil legal assistance to low-income Coloradans.
Current law or accounting student/graduate (or equivalent), familiarity with U.S. tax system, attention to detail, strong written and plain-language communication, client-centered and trauma-informed approach, commitment to social justice.
1mo
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Fall 2026 PR and Social Media Internship
San Diego or Los Angeles or New York City or Denver or Nashville
$575/yr HybridInternship
J Public Relations
J Public Relations: Global communications agency for luxury travel and lifestyle brands.
College junior/senior enrolled for academic credit; 16 hrs/week in-office (Mon-Thu) with Fridays remote; strong writing, communication, organization; proficiency with Word/PowerPoint/Excel (Mac) and Google Drive; AP style and social media knowledge.
Microsoft Word, Microsoft PowerPoint, Microsoft Excel, Mac OS, Google Drive, Google Docs, Google Sheets, Google Slides, Muck Rack, Tagger, Sprout Social, Canva, Barcelona Principles
2w
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Crisis Response Team Master's Level Clinical Internship Fall 2026 - Denver Sheriff Department
Denver, Colorado, United States
OnsitePart Time
City and County of Denver
City and County of Denver: Provides municipal government and public safety services to Denver.
Currently enrolled in an accredited masters program (Social Work, Psychology or related), prerequisite coursework, valid driver’s license, strong communication, interest in corrections; no prior experience required.
2w
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Crisis Response Team Master's Level Clinical Internship Fall 2026 - Denver Sheriff Department
Denver, Colorado, United States
OnsitePart Time, Internship
City and County of Denver
City and County of Denver: Provides municipal services and infrastructure for the Denver community.
0+ YOECurrently enrolled in an accredited Masters program in Social Work, Psychology, or related field; prerequisite coursework, valid driver's license, strong communication, and interest in corrections required.
6d
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Manufacturing Engineer I - Intern Conversion
Denver or Cape Canaveral or Van Horn or Huntsville or Kent
OnsiteFull Time
Blue Origin: Develops reusable rockets and systems for human spaceflight.
0+ YOEB.S. in engineering (mechanical/manufacturing/industrial/aerospace) within last year, fabrication and assembly experience, ability to interpret drawings and work instructions, internship/co-op or hands-on experience, able to start by Fall 2026, U.S. work-authorization required.
Creo, CATIA, SolidWorks, Python