There is a before and after David Ollenberger came into my life. Through his skills, knowledge, kindness and unique genuine personality he changed the view I had of the world and what was actually possible to do! I started it, but I’d like to say that we at the end of the day, together built a multi million project which has helped thousands around the world. Absolute recommendation to work with David in your business endeavour's.

David has literally helped us go from a start-up to a near $1 million dollar company. David is one of the strongest developers I’ve worked with – we’ve rarely had a challenge that he could not solve and solve quickly. I’d recommend him in the strongest possible way to any company fortunate enough to be considering them. Thanks for the great work, David, and for helping us build a great product and a successful business!

Working with David is a great pleasure. He has the world-class project management skills and technical know-how of a 10x developer, which is a game changer. His reliability and professionalism have been a blessing compared to previous developer hires. Beyond the heavy lifting he's done as a developer, his spirit of kindness and hospitality never ceases to amaze me. Even when presented with the most complex challenges, from a client's perspective, he makes the work appear effortless.

When I interviewed David about the job I told him that I had had very bad experience with 6 others who tried to do the job and just bailed on me - he told me to trust him so I took a chance on him. and Im glad I did - David did not only do what 6 others here on Upwork couldn't do but he also did it SO much better than the other attempts - he never gave up and designed whats was needed to do the job right - coz that what David does - he does the job right and beyond that - I highly recommend David to anyone who needs work done - this guy delivers!!