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10 Best Startups to Work For in Denver

By Ryan Morris
Sep. 25, 2017
Last Modified and Fact Checked on: Jan. 26, 2026

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10 Best Startups to Work For in Denver in 2026

Denver, CO – the vibrant capital of Colorado and known as the “Mile-High City,” continues to flourish in the tech startup landscape. With its stunning mountain views and a dynamic culture, it has become a hotspot for innovative companies across various sectors.

Over the past few years, Denver’s tech ecosystem has evolved dramatically, fueled by a surge in remote and hybrid work opportunities. The city’s strong foundation in energy and outdoor recreation has transitioned into a thriving hub for tech startups, creating an abundance of job openings for talented individuals looking to make their mark.

As Denver remains one of the fastest-growing cities in the United States, it prompts an essential question: which startups offer the best work environments and career growth opportunities? Utilizing review scores from trusted platforms like Glassdoor and Indeed, we’ve compiled a list of some of the top startups within a 30-mile radius of Denver, CO.

Here’s a quick overview of our top ten startups:

  1. AdAction Interactive
  2. Amplio Digital
  3. Blinker
  4. section.io
  5. Apostrophe, Inc.
  6. Looplist
  7. Muve Health
  8. Walkthrough
  9. flytedesk
  10. SecureSet

Curious if your company made the cut? Continue reading for the complete list and detailed descriptions.

1. AdAction Interactive

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Location: Lakewood, CO

“AdAction is the best! It has a fantastic company culture. I have come to know the true meaning of teamwork while at AdAction. We work hard and we work together – a true recipe for success!” – Sarahbeth Adams, Assistant Controller

Company Description: AdAction Interactive is a leading mobile marketing firm that partners with elite agencies and Fortune 100 companies to enhance user acquisition across mobile platforms. Known for its exceptional employee retention rates, AdAction offers ample career advancement opportunities and engaging after-work activities that foster a strong team spirit.

2. Amplio Digital

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Location: Boulder, CO

Company Description: Amplio Digital specializes in digital marketing strategies that drive sales and boost revenue through innovative advertising techniques. Employees appreciate the supportive environment, comprehensive benefits, and a cohesive team atmosphere.

3. Blinker

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Location: Denver, CO

Company Description: Blinker is a mobile application that simplifies the buying and selling of used cars, allowing users to research and transact from the comfort of their homes. Employees value the entrepreneurial culture and the freedom to innovate within their roles.

4. Section.io

Location: Boulder, CO

Company Description: Section.io is a tech firm that offers a unique Content Delivery Grid, enabling developers to scale and customize their websites seamlessly. Employees highlight the company’s open culture and the intellectually stimulating challenges presented daily.

5. Apostrophe, Inc.

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Location: Denver, CO

Company Description: Apostrophe, Inc. is dedicated to helping employers deliver top-notch healthcare solutions while reducing costs. Employees appreciate the remote work flexibility and the strong corporate culture that promotes collaboration and well-being.

6. Looplist

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Location: Denver, CO

Company Description: Looplist is a tech startup offering an app that curates a personalized list of products tailored to individual preferences. Employees praise the company culture and are excited about its promising growth trajectory.

7. Muve Health

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Location: Denver, CO

Company Description: Muve Health is a healthcare delivery company focused on improving patient experiences for total joint replacement procedures. Employees value the abundant growth opportunities and the supportive work environment.

8. Walkthrough

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Location: Denver, CO

Company Description: Walkthrough offers a revolutionary real estate platform providing virtual reality tours of properties, minimizing the need for in-person visits. Employees enjoy the vibrant atmosphere and the continuous technological advancements within the company.

9. Flytedesk

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Location: Boulder, CO

Company Description: Flytedesk specializes in marketing and advertising strategies designed to effectively engage millennial consumers. Employees appreciate the close-knit, family-like culture and the creative freedom granted to tackle challenges.

10. SecureSet

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Location: Denver, CO

Company Description: SecureSet is an educational organization focusing on cybersecurity training, equipping individuals with the skills needed to thrive in today’s digital landscape. Employees highlight the collaborative spirit and the company’s unwavering commitment to its mission and values.

Conclusion

These ten startups exemplify the innovative spirit of Denver’s tech scene, offering exciting career opportunities and a positive workplace culture. Whether you are a recent graduate or a seasoned professional, Denver’s vibrant job market is brimming with potential.

Looking for more career resources? Discover how to showcase your strengths in an interview by visiting this article. For insights into other cities, explore the best companies in Charlotte, North Carolina.

Never miss an opportunity that’s right for you.

Author

Ryan Morris

Ryan Morris was a writer for the Zippia Advice blog who tried to make the job process a little more entertaining for all those involved. He obtained his BA and Masters from Appalachian State University.

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