
Jean-Renaud Margelidon
CIO @ Labrador Transparency | Infrastructure | Security | CTPO
1 recommendation
Salary / Daily rate
1 person recommend
Paris, France
Freelance, open to permanent contract
Can come onsite
Skills
Languages
Work experience
Founder
Hic et Nunc
Jan 2026 - Present
10 months
Paris, France
With nearly 30 years of experience in IT, both in France and internationally, I now dedicate my expertise to digital transformation and consulting, offering tailored solutions in: - Audit and Roadmap: Assessing and securing your IT infrastructure by defining a clear, customized strategy aligned with your challenges. - Infrastructure and Team Management: Leading your technical teams and guiding migrations toward sovereign and high-performance tools. - Support and Advisory: Conducting interim management and operational consulting missions to address your specific needs. These services can be delivered on a full-time or part-time basis, depending on your requirements and constraints.
Group Chief Information Officer
Labrador Transparency
Jan 2025 - Mar 2026
1 year 3 months
Paris, France
– Hands-on CIO and infrastructure manager. – In charge of the group IT department, in particular in security, compliance, infrastructure and support perimeters in France, the USA and Asia. – Management of teams of 10 people in France and Asia, project management, definition and maintenance in operational condition of internal and external infrastructures (Private Cloud, Public Cloud), suppliers, budget (annual budget of 1.2 M€), definition of the group's security roadmap, response to customer calls for RFO. – Infrastructure projects: migration from an AD 2008 to 2016, delpoyment of a Proxmox cluster for VDI, strengthening of 10Gb network clusters, restructuring of backups, restructuring of vlans, strengthening of fire rules, maintenance in operational condition of internal infrastructures and external (Private Cloud, Public Cloud), systematic implementation of the MFA on all access points.
Chief Technology Officer
Labrador Transparency
Jul 2021 - Dec 2024
3 years 6 months
Paris, France
– Hands on CTO and infrastructure manager. – In charge of the group's product management (product roadmaps and technical management) and infrastructure (Technology, CISO, CIO) in France, the USA and Asia. – Infra projects: deployment of 2 vSphere clusters, migration of firewalls, switches, implementation of backups, maintenance in operational condition of internal and external infrastructures (Private Cloud, Public Cloud), monitoring, implementation of log wells, migration of Wifi. – Development projects: - "EOL" Collaborative document editing platform (XBRL, ESEF, XLiff, Java/ SpringBoot, Angular, Pdf, Print) - "Cockpit" Group project management platform (Java/SpringBoot, Angular, asset management, SSO) - "Digital Report" platform for presenting financial reports (Fulltext search, PHP/Symfony, Pdf, XBRL) - "Plainly" plain language management platform (PHP/Symfony, Java, Python, Language analysis) – Management of teams of 35 people in France and Asia (hiring of 26 people), definition of target architecture, project management, management of the maintenance in operational condition of internal and external infrastructures (Private Cloud, Public Cloud), supplier management, project management on group products, management of the group IT budget (annual budget of 4 M€), definition of the group security roadmap, response to customer calls for RFOs, in charge of due diligence in the context of acquisitions.
Group Deputy Director of Technology
Labrador Transparency
May 2018 - Jun 2021
3 years 2 months
Paris, France
– Organizing the IT Division, drafting the technological innovation strategy, strengthening the technological independence and rolling out strategic projects.
Shared-time Chief Technical Officer (CTO)
Référence DMD - Direction Marketing Digital à Temps Partagé Augmenté
May 2017 - Jun 2021
4 years 2 months
Paris, France
– Several shared time CTO missions: • In function or transition mode (hiring the CTO): 4 missions; • Internal audits with a view to defining action plans: 3 missions; • Due diligence for investment funds: 2 missions.
CTO
Living Actor
Aug 2018 - Dec 2018
5 months
Paris, France
– Transition CTO hands-on, with team management, hiring of the new CTO, roadmap definition, product development, mentoring, production management, architecture
Co Founder & CTO
Olkano
Nov 2016 - Nov 2018
2 years 1 month
– CTO and architecte hands-on – Olkana is developing a platform to manage your newspapers subscriptions, mail them to your address or view them online. – As a CTO, my goal was to produce a platform for acquiring paper logs (digital or digitized formats) and a SAAS consultation tool for end users (all in high availability mode). – My mission includes the definition of architecture, infrastructure, team management, and maintaining it in operational conditions.
CTO
Mediacompil
Jul 2013 - Jun 2017
4 years
Paris, France
– CTO hands-on. – Working on the new production platform. Defining the new architecture, mostly based on Linux Open Sources softwares, deploying, testing, implementing the new tool and workflows. – So far, I've redesigned the overall backend architecture, using PostgresQSL as a database engine and Apache SOLR as a near realtime full-text search platform (both replicated for high availability). We're also using Wowza servers for the audio/video streaming. – In addition to those servers, we're using Vocapia VoxSigma SaaS for our audio recognition and both Alchemy and Open Calais APIs for text analysis purposes. – The link between all the different modules, the bridges between our old and new backends are mainly written in Java. – We've also developed a brand new extranet for our clients to access their press reviews and alerts. The implementation uses Apache 2 Web Server, PHP and Javascript. We've also deployed an API (REST web-services using JSON/protocol buffer) that is used by both the extranet and the partners to access the data. – I've also created a production surveillance extranet to monitor the servers, the logs and to monitor and manage the services directly from the extranet. You also have some statistics on the production environments and the database. I've added health checker services to monitor the production services, retrieve the statistics and restart them if needed.
CMC Markets
Nov 2010 - Jul 2013
2 years 9 months
London, UK
Lead Mobile Application Developer
Apr 2012 - Jul 2013
1 year 4 months
London, UK
– Developing CMC Markets range of Android, iPhone and iPad spread betting and CFD financial trading apps. – Leading the front end mobile dev team. – During that period, I've conducted several Job interviews in order to find the persons to expand the team. – In 2012 CMC Markets was voted "Best Mobile Trading App" - Results from Investment Trends 2012 UK CFD, FX & Financial Spread Betting Report, based on ratings given by 23,000 investors.
Android Lead Developer
Dec 2011 - Apr 2012
5 months
London, UK
– Developing CMC Markets range of Android spread betting and CFD financial trading apps. – Leading the Android dev team in term of mentoring and technical mobile leadership.
Android/iOS Developer
Nov 2010 - Dec 2011
1 year 2 months
London, UK
– Working on the new generation iPhone/iPad and Android trading applications. – Involved in debugging and development of new functions. I'm working on both sides of these applications (UI and background). – Implementation of Jenkin as continuous integration server and IPA/AppStore applications builder. – Keys: Objective C, Xcode, Interface Builder, Cocoa Touch, Core Foundation, Jenkins, Java, Android, Git, Subversion
Founder
Hic et Nunc Limited
Aug 2011 - Nov 2012
1 year 4 months
London, UK
– Mobile & Mac OS X development agency – Developing a multi browser (Safari, Chrome and Firefox) NPAPI plugin. The plugin is the Mac OS capture client of the Arkadin's conference solution. – Keys: Objective C, NPAPI Plugins, Xcode, Interface Builder, Cocoa Core Foundation
iPhone/iPad Team Leader
Synchrone Solutions
May 2010 - Nov 2010
7 months
Paris, France
– Supervision of 5 iPhone/iPad developers using scrum agile methodology. – Development of reusable modules. – Development of several iPhone/iPad applications. - A receipts application - A loyalty card application. Application selected by Apple for the iPhone 4 ads. http://tinyurl.com/3jm8u8v. - A catalog application to display online catalogs – Android development: - Port the iPhone loyalty card application.
Mac OS X Senior Software Engineer
Intego
May 2008 - Apr 2010
2 years
Paris, France
– Main developer of VirusBarrier X6, an antimalware software. It contains an antivirus, anti-phishing and a firewall. – Main developer of VirusBarrier X5, an antivirus software for Mac OS X.
Lead Developer
Prodware
Oct 2006 - Apr 2008
1 year 7 months
Paris, France
– (The Catalliances company was acquired by Prodware) – Supervision of the Mac OS development team (two Mac OS X developers). – In parallel, I was the main developer of the Mac side of the Catalliances software solution. • QuarkXPress XTension developer. Completely rewrote the XTensions for QuarkXpress 7. • I've developed and managed (on the Windows side) an archiving process. The process was based on information originating from the database side (through stored procedures and flags), and from the Mac side. • Implementation and development of a new workflow process for the Mac OS X based solution. Tasks can be defined in advance and launched later.
Lead Developer
Catalliances
Nov 1999 - Sep 2006
6 years 11 months
Paris, France
– Catalliances integrates the totality of the tools for the design, the construction and the multichannel publication of the commercial offer of your company. – # Windows lead developer # – Design and development of tools in C, C++ and Visual Basic. • Management of AFP files stored in a Windows Server. • Image management • Pdf and Jpeg generation • Client / Server file management (using TCP/IP). • Workflow – Development of a Workflow application. (Visual Basic, Asp, C, C++) – Development of a content management application (image and text). (Visual Basic/C/C++ and WIN32 API) – # Mac OS lead developer # – Supervision of the Mac OS development team (3 developers). – I completely rebuilt the Mac OS 9 Application and successfully handled the migration to Mac OS X. – QuarkXPress XTension developer. Development of a flexible HTML import/ export XTension filter. This filter can handle several char sets (Greek, Russian, Czech ...). Migration of the Filter XTension to handle Unicode and OpenType® fonts. – Development of a new software architecture process to handle both QuarkXpress and Adobe InDesign in the Mac OS X application. – Management of several transversal projects in both the Windows and Mac OS X Operating Systems, such as a file replication process to ensure that all files on multiple distant sites are synchronized. – Development of Visual Basic .Net tools to extract text from Pdf files. The extraction is based on a statistical detection method of word spaces – Development of a C++ Active X gateway object between a .Net application and the Antidote® Spell Checker software.
Developer
homsys
Jan 1998 - Jan 1999
1 year 1 month
Paris, France
– Development of: • Extranets using Lotus Notes Domino. • A sales management program for the Windows CE operating system (in C). • A TIFF modifications Active X Objects in C / C++. • A Workflow modeling Active X object (Visual Basic and WIN32 API) – Development consulting of a Lotus Notes product referencing database.
Developer
VRC Technologies
Jan 1996 - Jan 1998
2 years 1 month
Paris, France
– Lotus Notes EDM product manager. – Development of a flexible digitization and OCR solution. Development of Intranets/Extranets.
Education
Université Denis Diderot (Paris VII)
DEA, Biomathematiques
1994 - 1995
1 year 1 month
Université Amiens 2
MST, Informatique Industrielle et Productique
1992 - 1994
2 years 1 month
IUT de Bourges
IUT, Génie Mécanique et Productique
1990 - 1992
2 years 1 month
Licenses & certifications
BAFA
Issued: –
Portfolio

Sécurisation de l'infrastructure DSI
