Meet Kelsus

About Us

call us at +1 970-376-1920

We Had Three Things In Mind

When we founded Kelsus, we had three important things in mind that have stuck with us for eleven years:

1. We love building software

A blank tab on an IDE and some morning coffee is a great way to start the day. Knowing that the software we write is ideally suited to it’s purpose is even better. This pride of craftsmanship is a core value.

2. Smart people are where it’s at

We love to surround ourselves with smart people. And not just inside Kelsus, but our clients too. Where better to find smart people than in the ranks of those that are willing to take the risks to start an entrepreneurial journey?

3. Professionals should be treated well and paid well

We’ve worked at companies that pressured employees to burnout and took advantage of salary laws to squeeze more hours out of people without paying them more. We don’t do that. We pay well, we respect time off, and we expect our clients to do the same. The best startup founders know that beyond about 50 hours a week they’re not only getting marginal returns on effort, they’re also stifling their own creativity and ingenuity.

Since then we’ve grown, and worked diligently on team improvement and skill.

Kelsus Leadership

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Jon Christensen


Jon founded Kelsus 2008 while on a sabbatical of sorts in Uruguay. Prior to Kelsus, Jon had roles building technical and business teams in 3 successful startups (Boldtech, StorePerform, IP Commerce) and 2 unsuccessful ones (Prestotech, Mocapay) In addition to running Kelsus, Jon is a frequent speaker, host of Mobycast, and holds a degree in computer science from Amherst College.

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Federico Tuckey


Jon and Fede have worked together since the beginning of Kelsus. In that time Fede has been instrumental in Kelsus’s growth in Argentina.

This year, Fede was among 4 recipients of the young entrepreneur award in Argentina and was honored at Argentina’s Casa Rosada for his work building Kelsus.

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Raul Herrmann


Raul has built his career to encompass a breadth of skills. Not only is he a senior technologist with a systems engineering degree but also a business focused product manager and leader. In his 8 years with Kelsus, Raul has often had complete management oversight over some of Kelsus’s largest projects and clients representing seven figures in earned revenue.

Raul was also a recent speaker at Nodeconf in Buenos Aires.

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Jonathan Diaz


Jony is the most technically focused of the principals in Argentina. He focuses mainly on back end data storage and retrieval and also on team development. Jony earned his systems engineering degree from Argentina’s national technical university in 2010.

Jony was also a recent speaker at Nodeconf in Buenos Aires.

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Roshan Cholas

Project Manager

Roshan is an accomplished product manager that entered the technology sector by way of civil engineering.

Her initial software experience came by way of a startup named TAAZ that built tools for the world’s biggest style companies (Estee Lauder, Instyle, People, MAC, Revlon and more).

Her software user experience designs are in use by employees of Amazon, Bank of America, 24 Hour Fitness, and thousands of thousands of social media savvy pets across America.

Would you like to help out? We’re always looking for talented developers, designers, and leaders.