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Piotr Kozlowski

Senior Back End Engineer

Director Of Engineering at VieMed

Viana do Castelo, Portugal

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Piotr Kozlowski's Email Addresses & Phone Numbers

Piotr Kozlowski's Work Experience


Senior Back End Engineer

October 2015 to Present


IT Consultant

July 2013 to Present


Co-founder, Architect, Developer

October 2014 to Present

Piotr Kozlowski's Education

Warsaw University of Technology Business School

Executive MBA with distinction A

2010 to 2012

University of Warsaw

Master of Science Computer Science

1995 to 2002

Piotr Kozlowski's Professional Skills Radar Chart

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52% Left Brained
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Piotr Kozlowski's Estimated Salary Range

About Piotr Kozlowski's Current Company


Toptal connects the top 3% of freelance designers and developers all over the world. Everyone at Toptal works 100 percent remotely for great companies in Silicon Valley, New York City, London, Germany, Japan, Switzerland, and more. If you are considering: - hiring talented engineers, or - working remotely for great customers, please visit:

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What company does Piotr Kozlowski work for?

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Piotr Kozlowski is Senior Back End Engineer

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Piotr Kozlowski works in the Internet industry.

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Piotr Kozlowski's colleagues are John Collier, Ben Jacobs, Rob Birkhead, and Casey Hoyt

About Piotr Kozlowski

đź“– Summary

My professional objective: to turn ideas, technology and a pinch of creativity into business products. My experience, briefly: - Java developer for 15 years - Scala (Akka, for 1 year - Ruby on Rails for 5 years - 13 years of CTO, System Architect, Team Leader - Product development: web/enterprise search, contextual advertising, behavioural targeting - Building and leading teams of top engineers and business professionals Preferred technologies: • Web: Ruby on Rails 4, HTML, CSS, Javascript (I'm a full-stack developer) • Storage: MySQL, Cassandra, Redis, Couchbase, MongoDB • Backend: Java (and Spring Framework, Hibernate, Gradle), Scala (Akka!) • Asynchronous messaging: ActiveMQSenior Back End Engineer @ Toptal connects the top 3% of freelance designers and developers all over the world. Everyone at Toptal works 100 percent remotely for great companies in Silicon Valley, New York City, London, Germany, Japan, Switzerland, and more. If you are considering: - hiring talented engineers, or - working remotely for great customers, please visit: From October 2015 to Present (3 months) IT Consultant @ Sandoy provides consulting services in the area of technology (search, machine learning) and team management. Sandoy helps its customers: - make right technology choices, - build a well-suited team of IT professionals, - deliver IT projects on time on budget and scope. Since November of 2014, I'm Chief IT leader of, the biggest anti-plagiarism service in Poland and Romania. From July 2013 to Present (2 years 6 months) Co-founder, Architect, Developer @ Vibrane understands how local weather conditions influence online users behaviour. We know what is the weather in the online users current location, right now. We also know how they perceive that weather and how it influences their everyday decisions. Finally we use that information to marketers, advertisers and business decision makers for their better marketing budget spending, campaign targeting and improving operations. I have designed and created a system that a) collects and stores in Cassandra wide range of weather related data from: weather providers, meteorological institutes, historical climate data and aviation weather services; b) computes weather segments by crunching collected data and c) tags online users with weather segments based on IP geolocation. Technologies used: Scala, Akka, Slick,, MySQL, Cassandra. For more information, please visit the site: From October 2014 to Present (1 year 3 months) System Architect, Team Leader, CTO @ My roles in Netsprint: • CTO - strategy, technology, team, ideas, development • Product owner (that starts from idea and delivers working solution) Netsprint builds its strong expertise in technology areas like: • behavioural and contextual ad servers • search engines • high performance text analysis - contextual relevance, • high quality news monitoring and social media monitoring with low latency, • big data analysis - classifying users based on their on-line behaviour. • technology solutions demanding in terms of performance and scalability, C10K by its nature. Netsprint successfully turns its technology experience into business products like: • Adkontekst - leading Polish behavioural-contextual advertising network that reach 93% of Polish online users; • Netsprint Adserver - behavioural-contextual technology solution for international customers (e.g. Norway, Denmark, Lithuania, Latvia, Romania, Bulgaria); • Netsprint Search - highly customised enterprise search solutions for publishers, e-commerce, telecoms and public sector; • Netsprint Audience - web tracking system that classifies site visitors basing on their online activities; • Newspoint (now separate company): Internet monitoring and social media monitoring service. More info at: From June 2003 to June 2014 (11 years 1 month) Member of Supervisory Board @ IT Consulting From September 2007 to October 2011 (4 years 2 months) Team Leader, Developer @ As a IT manager, then IT director and member of executive board, I was responsible for IT management, project management, developing IT strategy and R&D for (the biggest Polish online bookstore). From December 1999 to May 2003 (3 years 6 months) Team Leader, Analyst, Programmer @ IT analyst/programmer (Oracle, PL/SQL, Web technologies) then team leader (requirement analysis, design, programming, team management) From March 1998 to December 1999 (1 year 10 months) Executive MBA with distinction, A @ Warsaw University of Technology Business School From 2010 to 2012 Master of Science, Computer Science @ University of Warsaw From 1995 to 2002 Piotr Kozlowski is skilled in: E-commerce, Java, Spring, Project Management, Java Enterprise Edition, Enterprise Search, Scrum, Contextual Advertising, IT Strategy, Management, Search Engine Technology, Leadership, Strategy, IT Management, High Performance Systems

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In a nutshell

Piotr Kozlowski's Personality Type

Introversion (I), Sensing (S), Thinking (T), Perceiving (P)

Average Tenure

3 year(s), 6 month(s)

Piotr Kozlowski's Willingness to Change Jobs



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