Meet Kelsus
About Us
Since then we’ve grown, and worked diligently on team improvement and skill.
Kelsus Leadership

Jon Christensen
Founder/President
Jon founded Kelsus in 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 TechStars mentor, former host of the software development podcast, Mobycast, and holds a degree in computer science from Amherst College.

Federico Tuckey
Principal
Fede was one of the first developers to join Kelsus (read the full story). Since those early days, he has been an instrumental leader in Kelsus’s growth in Argentina.
Caught on holiday in Mallorca, Spain in 2020 at the onset of the pandemic, Fede decided to stay and is helping build the company's new European presence.

Raul Herrmann
Principal
Raul is a thoughtful, empathetic leader, and a razor sharp technologist. With Kelsus since the beginning (read full story), he has built the team in Argentina, established a supportive remote development culture, and tamed multiple projects too big for two pizza teams (at once).
Raul has also been a sought after iOS development teacher and a speaker at Nodeconf Buenos Aires.

Jonathan Diaz
Principal
Jony is the most technically focused of the principals in Argentina. His flexible, fast, easy to maintain architectures have delighted Kelsus clients and turned heads at FAANGs. Jony is responsible for the high bar of hiring and rapid staff development at Kelsus. He earned his systems engineering degree from Argentina’s national technical university in 2010.
Jony was a recent speaker at Nodeconf in Buenos Aires.

Roshan Cholas
Product 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.

Nahuel Burgos
Solutions Architect
Nahuel has been with Kelsus since 2015 and has done every kind of development: mobile Android, mobile iOS, front end React.js, and backend AWS work with in Node or Python using Docker or serverless architectures.
He has created highly specialized architectures for WebRTC, productionized machine learning, FIDO2, and more. Nahuel is an AWS Certified Solutions Architect, but before you pigeonhole him as a pure techy, know that he can also lead product discovery meetings and draw fantastic wireframes.