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Crossjoin has become a partner of great importance that accompanies us in our day to day always seeking to provide value to the services that we provide the business.

Jorge ContrerasHead of IT Core Platforms at Entel

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Company with top professionals specialized in performance optimization, providing an high quality service and support whenever it is necessary.

Cesar SchotborghProject Manager at Ericsson Chile

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Crossjoin has excelled in the services and the guarantee they offer to Vodafone UK, the CJ staff has been very proactive, as well as the support in any incident. All of his staff have demonstrated excellent technical aptitude and have managed to analyze and solve innumerable problems, both in the performance of the database and in the applications.

Punit BhatiaSenior Release Manager at Vodafone UK

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Unparalleled experience and mastery in RDBMS accompanied by a proactive spirit in problem-solving.

Alexandre MonteiroProject Manager at Carrot

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Their work on our retail sale tools has made a significant improvement to our business. We've seen a 37% to 65% increase in system performance, over 30% increase in application responsiveness, and identified potential root causes of DB contention. Not only that. They were always there to provide a professional perspective and help us when we faced an issue no matter it is production or non-production, always try to accommodate our schedule even if last-minute change. We really enjoy working with them; very reliable, trustworthy and good people.
Love to continue to work with them as long as possible.

Amy YunDirector, Commerce Technology at Rogers

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We were having sporadic performance issues and we were struggling to understand the cause. In a very short period, Crossjoin identified the root cause and proposed a simple but very effective correction plan. Since then, we trust Crossjoin to help us on complex infrastructure related issues and we are very happy with this partnership.

Jandira PeresProduct Owner at Outsystems

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We have worked together since 2008 in a collaborative team work, that is focused on systems performance and tuning. Since then, we have achieved quite good results.

José RuivoInformation System Director at PT Inovação in 2014/2015
Customer Operations Manager at Amdocs

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… in IT projects, especially in the field of IS / IT Telco's with technology and more complex business development and with the need to respond to new monthly challenges. The metaphor of Adam Smith "invisible hand" is represented by Crossjoin and managed by João Modesto and Rodrigo Garcia with their IT skills in Tuning and Performance Systems.

Sabine BerckmoesIT Manager at Telenet in 2011
Director Network Operations at Telenet

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I strongly recommend Crossjoin as a company specialized in performance issues. In our area, they managed to increase the performance of the GLX/JSP flow from more than 24 hours (best time obtained by our off shore delivery team) to only 1,30 hour!!

Nineta TanasoiuManager at Belgacom/Proximus