114 development intern jobs at 70 companies in Colorado

1w
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Product Development Intern
Thornton, Colorado, United States
$25/hr OnsiteInternship
Solid Power
Solid PowerNasdaq: SLDP: Designs and manufactures all-solid-state battery technology for vehicles.
Currently enrolled in a STEM bachelor's program; academic or industrial lab experience; safe handling of hazardous materials and PPE; familiarity with material characterization and DOE; Microsoft Office; Python or Minitab a plus; strong communication skills.
XRD, TGA, DSC, rheometry, Python, Minitab, Microsoft Office
2mo
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Summer Intern - Wind Development
Louisville, Colorado, United States
OnsiteInternship
AES
AESNYSE: AES: Provides electricity and renewable energy solutions globally.
Pursuing a bachelor’s or master’s degree; strong analytical and communication skills; proficient in Excel; attention to detail; GIS/Power BI preferred.
Microsoft Excel, Power BI, GIS
2w
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Intern, Organizational Effectiveness & Talent Development
Denver, Colorado, United States
$20/hr HybridPart Time, Internship
National Endowment for Financial Education
National Endowment for Financial Education: Improving financial literacy through research, advocacy, and education.
Part-time paid intern supporting organizational effectiveness, talent management, leadership development, research, training design, and project coordination. Requires strong research, writing, communication, Microsoft Office, and interest in HR/OD fields.
Microsoft Office
3d
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Development Strategic Operations Intern
United States or New York City or Boston or Washington or Boulder or San Francisco
$18/hr RemoteFull Time
Environmental Defense Fund
Environmental Defense Fund: Finds science-based solutions for urgent global environmental problems.
Enrolled in or recent graduate of an undergraduate program; basic Microsoft Office skills; confidentiality with sensitive data; Salesforce experience a plus; strong communication, organization, and attention to detail.
Microsoft Office, Salesforce
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
3mo
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Senior Manager, Business Development - XRX
California or Maryland or New Jersey or Illinois or Washington or Colorado
$150k-$187k/yr RemoteFull Time
ZEISS
ZEISS: Produces high-precision optical systems and optoelectronic technologies.
5+ YOEMaster’s degree; 5+ years in business development; international, cross-functional experience; contract negotiations; high-tech/ophthalmic or related industries.
2mo
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Graduate (Year-Round) Intern – Socio-Economic Impacts
Boulder, Colorado, United States
$45k-$71k/yr HybridFull Time
National Laboratory of the Rockies
National Laboratory of the Rockies: Conducts applied research in energy systems and technology innovation.
0+ YOEGraduate intern focusing on socio-economic impacts; requires coursework in public policy, economics, or social science; strong communication and stakeholder engagement.
2mo
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Business Development Manager - Electronics
Remote or Los Angeles or San Francisco or Denver or Atlanta or Chicago or Detroit or Madison Heights or New York or Dallas
$120k-$145k/yr RemoteFull Time
Henkel
HenkelXETRA: HEN3: Manufactures laundry, beauty, and adhesive products globally.
5+ YOEBachelor’s degree required; MBA preferred. 5+ years in electronics/electrification industry with applications and market trends experience. Strong networking, negotiation, and project leadership skills. Ability to travel up to 30% (including international).
3w
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Learning & Development Specialist
Denver, Colorado, United States
OnsiteInternship
Maxx Properties
Maxx Properties: Owns and manages a nationwide portfolio of multifamily apartment communities.
Some college in Business/HR, proficiency in Microsoft Office, strong organizational and communication skills; preferred experience with Canva, Microsoft Forms, basic video editing and AI tools; familiarity with LMS.
Microsoft Office, LMS, Canva, Microsoft Forms, ChatGPT, Claude
3mo
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Marketing Intern
Englewood, Colorado, United States
$18-$20/hr OnsiteFull Time
BrightSpring Health Services
BrightSpring Health ServicesNASDAQ: BTSG: Provider of home and community-based health and pharmacy services.
0+ YOECollege junior/senior or recent graduate pursuing Marketing/Business degree; knowledge of brand development, marketing materials, social and website content; self-starter with proactive attitude.
Microsoft Office Suite, Excel, PowerPoint, Word
4w
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Intern - Unpaid; BR 21; 7.1.26
Denver, Colorado, United States
HybridInternship, Part Time
Texana Bank
Texana Bank: A regional bank and mortgage services provider offering community banking and mortgage offices with a long local history.
Structured, educational unpaid research internship (approx. 11 weeks). Produce written research report and presentation; conduct research and shadow loan officers. Estimated 18–20 hours/week; must be a minor with schedule accommodating training and school commitments.
1mo
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Vice President, Business Development
Berthoud, Colorado, United States
$280k-$330k/yr OnsiteFull Time
Ursa Major
Ursa Major: Designs and manufactures rocket engines and aerospace propulsion systems.
12+ YOESenior sales leader with minimum 12 years in aerospace/defense sales or capture, proven federal procurement success, FAR/DFARS knowledge, team leadership, ability to obtain U.S. security clearance, onsite in Berthoud CO with extensive domestic and some international travel.
2d
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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
2w
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Environmental Laboratory - Intern
Denver, Colorado, United States
$19/hr OnsitePart Time
Onterris
OnterrisNYSE: ONT: Global provider of environmental consulting, testing, and remediation services.
High school diploma, current university enrollment, basic lab techniques, Microsoft Excel, ability to lift up to 25 lbs, detail-oriented and good communication.
Microsoft Excel
5d
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Instrument Solutions Intern
Denver, Colorado, United States
$25/hr OnsiteTemporary, Part Time
Metro Water Recovery
Metro Water Recovery: Operates wastewater treatment and recovery services in Denver.
Assist with maintenance, calibration, benchtop nutrient analyses, data recording/analysis, and support instrument trials; requires coursework in physical/biological sciences or environmental engineering.
Microsoft Office
2w
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Fall 2026 Internship - Creative Development
Los Angeles or Washington or Wyoming or Wisconsin or West Virginia or Washington or Virginia or Vermont or Utah or Texas or Tennessee or South Dakota or South Carolina or Rhode Island or Pennsylvania or Oregon or Oklahoma or Ohio or North Dakota or North Carolina or New York or New Mexico or New Jersey or New Hampshire or Nevada or Nebraska or Montana or Missouri or Mississippi or Minnesota or Michigan or Massachusetts or Maryland or Maine or Louisiana or Kentucky or Kansas or Iowa or Indiana or Illinois or Idaho or Hawaii or Georgia or Florida or Delaware or Connecticut or Colorado or California or Arkansas or Arizona or Alaska or Alabama
RemotePart Time
Wasserman
Wasserman: Global agency representing sports, music, and entertainment talent.
Must be eligible for college credit, 20+ hrs/week from Sept 9–Dec 11, 2026. Strong research and writing skills, interest in non-fiction/storytelling, coursework in journalism/creative writing preferred; Canva experience a plus.
Canva
1mo
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Associate Business Development Representative
Denver, Colorado, United States
$45k-$55k/yr OnsiteFull Time
RXO
RXONYSE: RXO: Provide asset-light transportation and freight brokerage solutions.
1+ YOEMinimum 1 year procurement experience; responsibilities include cold calling, lead development, rate negotiation, and updating internal systems. Bachelor’s degree preferred; transportation, sales, or customer service experience a plus.
3mo
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26 - School Psychologist Intern (2026 - 2027 School Year)
Pueblo, Colorado, United States
$28k/yr OnsiteContract
Pueblo School District 60
Pueblo School District 60: Operates public K-12 schools and educational programs in Pueblo.
In progress Educational Specialist degree in School Psychology; eligible for Colorado CDE intern authorization; experience with assessment, program development, consultation, behavior intervention, and multidisciplinary teamwork.
Educational Technology
1w
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Business Development Representative
United States or Princeton or Durham or Westminster
$35k-$47k/hr RemoteFull Time
Trimble
TrimbleNASDAQ: TRMB: Provides hardware and software for precision positioning and modeling.
Outbound prospecting and lead qualification, strong communication, multi-channel prospecting management, cross-functional collaboration, flexibility to work with international teams across European time zones.
CRM
4w
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2026 Summer Intern, Human Resources (Talent Acquisition)
Denver, Colorado, United States
$19-$24/hr OnsiteInternship
Frontier Airlines
Frontier AirlinesNasdaq: ULCC: Provides low-fare passenger air transportation services across the Americas.
University enrollment preferred; coursework in HR, Communications, or Organizational Development preferred; customer service or event planning experience preferred; strong office and communication skills; proficiency with Microsoft Word and Excel.
Microsoft Word, Microsoft Excel, Learning Management System (LMS)