21st Century Technologies, Inc.

Custom Database Software Development, Online Marketing

Custom Database Software

Business Marketing/Local SEO

Conversion Rate Optimization & Lead Gen

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    • Turn Spreadsheets and Paper Forms into a Mobile Database App
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You are here: Home / Web Design, Web Development Firm / SEO Web Design, Full Service SEO Friendly Web Design Company

Web Design / SEO / PPC Experts Since 1993

$49 First Month of Marketing – If No Results then No Charge. No Risk, No Obligation!

Take the First Step Now

Denver SEO Web Design Company - Call Us Today to Start Your Website ProjectCall (303) 744-2178 or complete the 30 second form to the right to get these 2 actionable, free documents:

  • Local SEO Analysis Report showing you the holes in your online presence. We’ll get your main keywords then do the analysis and send you the report.
  • Web Design Checklist to make sure you include all critical aspects of your new website design – sent immediately.

“Artfully Crafted, Custom Coded, SEO-Friendly Websites That Increase Sales and Lead Generation”

Are you looking for a full service, professional SEO web design company that also specializes in search engine optimization (SEO) and Pay Per Click advertising (PPC)? 21st builds websites that enhance your brand, then we increase sales and lead generation through highly optimized and targeted marketing that brings in relevant visitors that want to buy from you.

If you need more business, then relax, you’ve come to the right place. We ease the pain of creating a new website and increasing your business, and we’ll provide you with a free initial consultation.

High Performance, SEO / Mobile Friendly Websites

We are very easy to work with. We step you through the entire seo web design process for a completely painless experience. Our websites:

  • Are very reasonably priced
  • Are fast loading
  • Are mobile responsive – this means that the same site can be viewed in all mobile platforms instead of creating a different site. A different mobile site causes many problems, and we have figured out the best solutions!
  • Are highly and appropriately aesthetic
  • Have persuasive content to convert visitors into customers
  • Quickly become your company’s sales lead generation engine
  • Are optimized for local 1st Page listing on Google, Yahoo, or Bing.
  • Have a high degree of usability
  • All use a state-of-the-art content management system (CMS) so you can manage the content yourself
  • Are integrated into the most popular social media sites like Facebook, Twitter and LinkedIn

SEO Web Design Company

Michael Cordova, President/CEO 21st Century Technologies, Inc. - I'll Talk with YOu Personally

We’ve been designing websites and doing online marketing (Search Engine Optimization – SEO and Pay Per Click advertising – PPC) for our clients since 1993. We test continuously to improve results. Our processes have been proven through many years of success.

If you need a website that looks good, has a high degree of usability, functions flawlessly, and ranks well in the search engines OUT OF THE BOX, then fill out the form on the right sidebar and we’ll be in touch within 24 hours to discuss your SEO web design project, usually within a few minutes.


Below are just a few of the websites we’ve crafted over the years. If you like what you see, give us a call.

I look forward to working with you.
Best regards,


Michael A. Cordova, President/CEO
21st Century Technologies, Inc.
(303) 744-2178

SEO Web Design Company Portfolio

Read more about our SEO Web Design services read our SEO web design usability blog post.

25+ Years in Business!

25+ Years in Business

Michael is a Wordpress Expert

See Details

Software Dev Testimonial

“I highly recommend 21st Century Technologies and Michael Cordova. Michael has successfully built and delivered several in-house custom database software systems for my company, and multiple customer-facing software projects. I have known Michael for over 15 years. His character and reputation are outstanding. Michael has always enhanced our business’s reputation and helped to ensure the successful completion of each project. He has always been very attentive to the needs of our clients and has represented our company well.”
James P. Greichen, President, Triportals, Inc.

Author Productivity Tools For Business

Author Productivity Tools For Business

Outstanding Testimonial

“Michael Cordova has a commanding knowledge of several software development languages. For over ten years I have relied on Michael’s expertise and worked with him on projects. He is the first person I call for an opinion on a perplexing problem or when considering a new methodology. I highly endorse any work that he is involved in. He is reliable and delivers high quality work well within established deadlines. I have and will always consider Michael on any project needs. I highly recommend his talents to anyone with any type of software development needs.”
Vernon Kercher, Senior Application Developer, Western Union

Your Technology Partner

Have 21st do your software design and development or online marketing and advertising and you will inherit a technology partner. We have been doing it since the beginning of the WWW. We are uniquely qualified to provide technology solutions.

Outstanding CEO Testimonial

“I would highly recommend Michael Cordova as an expert in website search engine optimization, web design and software and web development. Michael is the best SEO / Internet marketing consultant I’ve ever met. His work to optimize the TransMagic website not only produced an 8-fold increase in lead generation, but it also stood the test of time. Recently Michael helped us to re-do our website and SEO to take advantage of more sophisticated techniques in his knowledge base.”
—
Todd Reade, CEO
TransMagic

Many More Testimonials…

CEO Testimonial

“I have worked with Michael for almost three years now and he has never ceased to amaze me. I’ve worked with a number of SEO people over the years and he puts them to shame. He is simply the best of the best. He’s done more for our site in a few months than other people have done in years. His knowledge of WordPress is quite impressive. I highly recommend Michael Cordova to build your WordPress websites and bring in sales leads for you through SEO and other online marketing means.”
—
Pedram Shojai, CEO
Well.org

Local SEO Marketing

Local SEO/Small Business MarketingLocal SEO gets your site ranked at the top of Google's local listings. Your online presence is expanded dramatically, and the sale is already made before your prospects call you. Read more about our local SEO services.

Web Development

Web Development - Since the Beginning of the InternetWe at 21st have been doing web development since the beginning of the Internet. We create custom applications like maps, contact management and website customizations that are beyond the skills of other companies.

Software Development Checklist

Download our Software Development Checklist to ensure you make no mistakes in your custom software project. See our many short custom software case studies for an idea of the breadth of our software development successes.

Your Technology Partner

Have 21st do your software design and development or online marketing and advertising and you will inherit a technology partner. We have been doing it since the beginning of the WWW. We are uniquely qualified to provide technology solutions.

Copyright © 2026 · 21st Century Technologies, Inc. All rights reserved. · Contact Us

21st Century Technologies, Inc.
1566 S. Pennsylvania St. Denver, CO 80210
303-744-2178
SEO Web Design, Full Service SEO Friendly Web Design Company - Denver, Colorado