Hello, I'm Greg.

I'm a hacker and entrepreneur.


A person who delights in having an intimate understanding of the internal workings of a system, computers and computer networks in particular. The term is often misused in a pejorative context, where “cracker” would be the correct term.

— RFC 1392

Who am I ?

My name is Gregory Alvarez, I have been using computers since I was 3 years old and I learned to program when I was 8. I speak fluently French, Spanish and English. My travels around the world led me to live in London, Madrid and Paris where I am currently residing. During my childhood, my father taught me electronic, robotic and IT. Since those days, I have invested my time in personal projects to learn and extend my knowledge in a multitude of fields. I am specialized in security and worked for the government with a security clearance. While I was at university I founded my first company. My favorites languages are C, Python and Bash. I play guitar, practice martial arts, basket ball and climbing. I believe, as Albert Einstein said, that you never fail until you stop trying.



I am an expert in IT security. I worked for the French Minister of Defense Police E-Crime Unit doing forensic and fingerprint analysis. I also was hired by Thales Group, a multinational defense company. My work consisted in designing governmental communication interception systems for the electronic warfare department. I had a confidential security clearance. In charge of a security laboratory, I worked during 3 years on secure communication technologies and cryptography. My work led me to invent a high speed symmetric encryption algorithm and a secure communication protocol without key-exchange, solving the problem of active interception attacks.

padlockHigh Performance

High Performance

I have a long experience in optimization and high performance. While working at Packlink, the first startup in Spain to have received investment from Accel Partners, I affronted scalability and performance issues. We solved these problems implementing a Microservices Architecture, the same deployed at Netflix. Using an optimization technology I developed during my personal projects, I was able to improve their search engine's speed from 1.5 seconds per request to 200 nanoseconds (7 million times faster).

padlockPublic Relations

Public Relations

Working 3 years in Public Relations was an interesting experience, I had the chance to be formed in marketing and management by experienced directors. Creating web sites and applications side to side with designer allowed me to learn how to use Adobe Creative Suite. At this time I was working freelance for multiple companies from Paris to London. I was creating iPhone/iPad application and complex web site using technologies like Flash AS3, PHP, JavaScript, HTML, SQL and CSS.



While I was at university, I co-founded my first company with a friend who studied at HEC. It was an exceptional experience where I discovered a lot about management, marketing, IT and startups. My associate and I learned a valuable knowledge from our experiences, books, courses from Stanford on entrepreneurship but also from mentors and CEOs who managed startups/companies. We did of course make a lot of mistakes, but in the end, I learned more during this 2 years than in my entire life.


My 5 favorite quotes

If you're going through hell, keep going.

- Winston Churchill

Courage is not the absence of fear, but rather the judgement that something else is more important than fear.

- Ambrose Redmoon

You must be the change you wish to see in the world.

- Mahatma Gandhi

Never, never, never give up.

- Winston Churchill

It's not that I'm so smart, it's just that I stay with problem longer.

- Albert Einstein

Where I have been

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