Jeff Olen

Hello, I'm Jeff Olen

Full Stack Developer. | Mobile Apps Designer. | Ruby on Rails Programmer. | Cordova/PhoneGap Expert.

(1) 949-485-4380
120 Cristianitos Rd. #11201, San Clemente, CA USA

Jeff Olen

Full Stack Developer. Mobile Apps Designer. Ruby on Rails Programmer. Cordova/PhoneGap Expert


Ruby on Rails

Social Profiles

Profesional Profile

I have been developing business software systems for more than 20 years. I spent the early part of my career working on the big IBM iron; System/36, AS400, IBM i, etc... I worked in a variety of languages including RPG, C, and PHP. I think I have developed or at least worked on every type of business application under the sun; or maybe it just feels that way? More recently, I made the switch to web apps and mobile apps. Now I work almost exclusively developing web and mobile apps for a wide range of clients. The list of tools I use is fairly extensive but primarily Ruby on Rails, Javascript (Angular/React), Cordova, and when I can't avoid it PHP.

I am always looking for new and interesting projects. Maybe yours?

Cup of coffee

Line of code


Happy customers

What i can do

My Services.

Web Applications

Ever said to yourself, there must be a better way to do that? The answer is yes and I can help you build a customized solution to whatever your business needs are.


Sadly, there are many folks out there that are not professionals. If you have been left with a halfway done or badly done solution I can untangle the mess and get you back up and running.

UI/UX design

The pace of change is ever increasing and you want to make sure your solution is current and can stay current. I can design a solution with state of the user experience techniques and in line with the most up-to-date web design trends.

Clean Code

As a developer with more than 20 years experience writing code, I know firsthand the value of writing clean and maintainable code. The solutions I build are easy to maintain and easily modified when your needs change.


For over 20 years, my goal has been to build solid applications and solid relationships with my clients. My goal is to write code that needs minimal support but I am aways available to support your business.


I'm currently available for freelance work.

Contact me

Contact Us

Drop us a line or give us a ring. We'd love to hear from you.