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Julien SIMON

Technical Evangelist

Hands-on CTO. Cloudhead. AI/ML explorer.


Section title

Julien SIMON's Email Addresses & Phone Numbers

Julien SIMON's Work Experience

Amazon Web Services

Technical Evangelist

October 2015 to Present

Paris Area, France


Chief Technology Officer

October 2014 to October 2015


Aldebaran Robotics

Chief Technology Officer, Software

February 2014 to October 2014


Julien SIMON's Education

Institut supérieur d'Electronique de Paris


Pierre and Marie Curie University

Master (D.E.A.)

Julien SIMON's Professional Skills Radar Chart

Based on our findings, Julien SIMON is ...


What's on Julien SIMON's mind?

Based on our findings, Julien SIMON is ...

52% Left Brained
48% Right Brained

Julien SIMON's Estimated Salary Range

About Julien SIMON's Current Company

Amazon Web Services

The Force is awakening. Stay tuned :)

Frequently Asked Questions about Julien SIMON

What company does Julien SIMON work for?

Julien SIMON works for Amazon Web Services

What is Julien SIMON's role at Amazon Web Services?

Julien SIMON is Technical Evangelist

What is Julien SIMON's personal email address?

Julien SIMON's personal email address is ju****[email protected]

What is Julien SIMON's business email address?

Julien SIMON's business email address is j****[email protected]

What is Julien SIMON's Phone Number?

Julien SIMON's phone (**) *** *** 348

What industry does Julien SIMON work in?

Julien SIMON works in the Internet industry.

Who are Julien SIMON's colleagues?

Julien SIMON's colleagues are Shuai Wang, Pujun Wu, Nikko Xing, Justin Painter, Mayank Gupta, Tarandeep Singh, Nitin Mathur, Syed Ishtiaque, Nithin Devang, and Keerthana Bysani

About Julien SIMON

📖 Summary

Hacker. Headbanger. Harley rider. Hunter. Next talk : "A real-life account of moving 100% to a public cloud", Velocity, Amsterdam, October 2015Technical Evangelist @ The Force is awakening. Stay tuned :) From October 2015 to Present (1 month) Paris Area, FranceChief Technology Officer @ With 65 million members worldwide, Viadeo ( is one of the leading figures in professional social networking. In charge of Software Engineering (web & mobile), Architecture, Infrastructure and Security. Managing 70 people in Paris and San Francisco. Technical environment: full stack web development (node.js, Java), mobile apps (iOS, Android), data & machine learning (MySQL, Elastic Search, Spark, Hadoop, HBase, Redshift), Amazon Web Services, infrastructure. From October 2014 to October 2015 (1 year 1 month) ParisChief Technology Officer, Software @ In charge of all things Software and Infrastructure at Aldebaran. Managed 130+ people. Against all odds, successfully launched Pepper in June 2014 : And then... it all went down the drain : Technical environment: C++, Python, Linux, Amazon Web Services, ESB, SSO, security From February 2014 to October 2014 (9 months) ParisVice President, Engineering @ In charge of an online advertising SaaS platform used by over 3000 e-commerce companies in over 30 countries. Managed 60+ people. - Publisher platforms (10/2010-01/2013): software development of buy-side applications, most notably Real-Time Bidding (Google, Yahoo, Appnexus plus 15 others) and Facebook Ad Exchange. Over 20 billion incoming HTTP requests daily - Scalability & High Performance Computing: software development and operation of technical services used by all Criteo projects: service-oriented web application framework, caching, databases, log management & processing (6PB Hadoop cluster), BI, etc. Constant focus on web performance and on data storage/processing for real-time and analytics needs - Infrastructure & Production: 7 datacenters located in Europe, US and Japan (6000 devices). All hardware deployed and managed by Criteo (servers, load balancers, LAN/WAN networking equipement, storage, etc). 3 AS numbers, multiple 10Gbit IP links, multiple private links between datacenters. 24/7 operations (monitoring, on-duty) Technical environment: Microsoft software (C#, IIS, SQL Server, etc), Open Source software (Linux, C/C++, Java, nginx, MongoDB, Memcache/Couchbase, Cloudera Hadoop, Storm, Kafka, Nagios, Centreon, Graphite, etc), Hardware (commodity x64 servers, Cisco Nexus switches & routers, F5 and A10 load balancers, Isilon storage, etc) From October 2010 to January 2014 (3 years 4 months) ParisChief Technology Officer @ - In charge of a SaaS e-commerce platform (, generating 2 billion euros of gross merchant value. Managed 150 people. * Pixmania ( : #1 B2C e-retailer in Europe (26 countries) * Pixmania Pro ( : Pixmania B2B activities * Pixplace ( : Pixmania marketplace * Bouygues Telecom ( : #3 MNO in France, #1 on the web * Currys (, Dixons (, PC World ( : the largest electrical retailers in the UK - Agile project management (Scrum), front office & back office software development, infrastructure, Business Intelligence, as well as QA & Tech Support (both built from scratch). - Ownership of the IT budget (people, OPEX, CAPEX : 15 million euros) & supplier management Technical environment : PHP, mySQL, Oracle, PL/SQL, Linux (600+ servers in 7 locations), NetApp (2 Petabytes total), dark fiber, MPLS, etc. From May 2009 to September 2010 (1 year 5 months) ParisVice President, Engineering @ In charge of Software & Infrastructure for a digital supply chain SaaS platform used by the music majors (Universal, Sony, Warner). Managed 50 people., - Scaled the technical team from 12 to 50 people, without any in-house HR for 18 months. - Deployed a code factory (continuous integration, code coverage, etc) supporting the Scrum methodology. - 3 hosting locations, 150+ servers, 400+ Tb. Built and deployed new technical infrastructure on 2 hosting locations: CAPEX > 2M€, direct negotiation with suppliers (Redhat, Dell, Isilon, Telecity, Oracle, etc). - Implemented a Disaster Recovery Plan (availability > 99.9%) - Implemented a ISO 27001-like Information Security Management System, with yearly external audits. Technical environment : Java/J2EE (Jboss, Tomcat, Spring, etc.), Oracle, clustered NAS storage (NetApp, Isilon), UNIX (Linux, Solaris), Windows Server 2003, Cisco, Juniper, Foundry, audio/video transcoding... and lots of Open Source. From March 2007 to April 2009 (2 years 2 months) ParisChief Technical Officer @ As a consultant for a pre-funding startup working on the A-GPS SIM, the world’s first Assisted-GPS module for SIM cards : - Based on a first hardware prototype, wrote the software specification of the A-GPS SIM product. - Led technical discussions at management level and R&D level with suppliers (software, semiconductors, manufacturing) and partners (smartcard silicon vendors, smartcard manufacturers). - Attended high-level meetings with private & institutional VCs. Technical environment : GPS chipsets & software stacks, semi-conductors, manufacturing, SIM & smartcard standards From September 2006 to February 2007 (6 months) Director, R&D Mobile Communications @ 09/2003-09/2006 : - Led the development of all Telecom products (45 people in France + 25 in China and the Philippines) - Reorganized R&D teams to sustain a 60% yearly increase of delivered card volumes - Enforced ISO 9001:2000 methodology (yearly internal & external audits) - Delivered in 2003 the first implementation of the WIB 1.3 micro-browser to pass the SmartTrust certification - Delivered in 2004 the first USIM smartcard approved by the Vodafone Group, beating Gemplus and Axalto - Delivered in 2005 the first USIM smartcard approved by Cingular, beating Gemplus and Axalto - Traveled in Asia to perform a thorough technical due diligence of I'M Technologies (acquired by OCS in mid-2006) 01/2002-09/2003 : - Led an 8-people team in charge of custom SIM application development, mostly for European Mobile Network Operators : SFR, Orange, TIM, Telefonica, Vodafone UK, etc. - Enforced ISO 9001:1994 methodology (yearly internal & external audits) - Delivered a full implementation of the SmartTrust Wireless Internet Browser 1.2 application, the first to be certified by SmartTrust. - Delivered a full 2G SIM card to Vodafone UK, with RSA cryptography, lots of proprietary features and multiple JavaCard applications. - Delivered tens of custom applications at a rapid pace, enabling the standard product to meet specific customer requirements (extension of 2G/3G standards, proprietary features, additional cryptography, etc) Technical environment : embedded C, assembly, Java Card, 16/32-bit chips (Atmel, Infineon, ST Micro, Samsung, etc.), smartcard & telecom standards (ISO, ETSI, 3GPP), WAP, cryptography, ISO 9001. From January 2002 to September 2006 (4 years 9 months) Paris Area, FranceCo-founder and technical manager @ - Co-founded a consulting company specialized in object technologies for embedded systems. - Defined the strategy : missions, technologies, customers. - Hired 10 people in 12 months, achieving in 2001 a profitable turnover of 750K€. Missions led in person: - Oberthur Card Systems (1 year) : designed and implemented multiple JavaCard applications for the Identity & E-commerce markets (AuthentIC product line). Trained 50 people on Java & Java Card development. - SchlumbergerSema (6 months) : designed and implemented a Java Card secure filesystem for the Cyberflex smartcard, targeted at the Security market. Technical environment : C++, Java, embedded Java, JavaCard, UML From June 2000 to December 2001 (1 year 7 months) ParisEmbedded Software Engineer @ Within the ChorusOS group (real-time UNIX operating system with a microkernel architecture) : - Developed custom kernel features for a innovative set-top box (the BetaResearch d-box, millions of unit shipped). - Single-handedly integrated and validated the complete GNU C/C++ cross-development suite (4 hosts, 20+ targets), as part of the first release of ChorusOS officially supported by Sun. - Acting as last-level support within the Sun support organization, helped customers worldwide on all versions of Chorus and delivered many patches. Traveled on-site to investigate issues in detail. - Trained customers worldwide on application & device driver development : 15 on-site one-week classes at Sun Microsystems (USA & France), Lucent (Netherlands), Nokia (Finland), Tenovis (Germany), Nortel (Canada & USA). Technical environment : Intel, SPARC, PowerPC, C, C++, ChorusOS, UNIX, TCP/IP, SNMP, embedded Java. From June 1998 to May 2000 (2 years) ParisEmbedded Software Engineer @ - Designed and implemented a real-time communication layer running on a public-network PBX. - Successfully completed the V cycle, from specification to live testing. - Supported application developers by phone & e-mail (20 people in Germany & India). Technical environment: Motorola 68k, C, C++, Chorus real-time kernel, UNIX (Solaris), SNMP. From May 1997 to May 1998 (1 year 1 month) ParisPre-sales Engineer @ Provided technical expertise to the Sales/Marketing team on Concert Internet Plus (high-end Internet access for businesses). Presented the product to prospects (mostly ISPs), answered RFPs. Mission cut short by BT France / Cegetel merger. From February 1997 to May 1997 (4 months) ParisResearch Engineer @ 80% : contributed to a research projet at MASI Laboratory, Paris VI University (distributed system based on the Mach microkernel). Tech reports and publications available on Slideshare: 20% : taught undergraduate-level Computer Science classes at ISEP, EPITA & ETGL (Algorithms, C, C++, UNIX Kernel, Distributed Systems). Sep-Dec 1996 : translated into French a reference book on UNIX : « The Design and Implementation of 4.4BSD », published in France by International Thompson Publishing. From January 1994 to December 1996 (3 years) Paris Julien SIMON is skilled in: Linux, Software Development, Agile Methodologies, Unix, Getting The Job Done, Security, SaaS, Cloud Computing, Scalability, E-commerce, Datacentres, High Availability, Leadership, NoSQL, Thinking Outside The Box, Public Speaking, Product Development, MySQL, Java, Disaster Recovery, Executive Management, Open Source, Big Data, Amazon Web Services..., Data Center

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In a nutshell

Julien SIMON's Personality Type

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

Average Tenure

1 year(s), 8 month(s)

Julien SIMON's Willingness to Change Jobs



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