Guillaume Leyronnas
Head of Engineering
43 years old
Driving License
Paris France
Professional Status
Employed
Open to opportunities
Senior Engineering Manager - Mobility Classified Crew
Leboncoin / Adevinta
Since October 2022
Full-time
Paris
- With the Leboncoin scaling, to preserve the size of the teams, and thus the proximity among people, jobs of Senior Management were created to manage "crews"
- Management of up to 5 teams / 30 people:
- Edito / L'Argus newspaper
- Galaxy / L'Argus discussion group and support
- Classified Auto
- Classified Heavy Material
- Devops (transversal team)
- Edito / L'Argus newspaper
- Reorganisation of the crew to better define our scope:
- Edito & Galaxy: external workforce
- Devops: spread the devops among the feature teams for a better integration - dotted line remains
- Both Classified teams remain
- Edito & Galaxy: external workforce
- Managing and coaching Engineering Managers
- Foster hiring of new people - 5 people en 2023
- Ensure agile methodologies are well used within the teams - coaching when necessary
- Build the crew roadmap with the Product Manager, Product Owners and Engineering Managers - ensure this is aligned with other Mobility teams and Leboncoin/Adevinta P&T
- Technical environment: Go, PHP, Coldfusion, ReactJS, Swift, Kotlin, PostgreSQL, MariaDB, Gitlab, AWS
Engineering Manager - Transactions
Leboncoin / Adevinta
September 2021
to September 2022
Full-time
Paris
- While Leboncoin is scaling, we create more and more feature teams requiring seasoned tech managers in pair with product owners
- Manage 8 people, with different skills (backend, frontend, apps developers, and QA)
- Lead 1/1, annual interviews, appraisals within the team
- Create every condition for good collaboration with other feature teams (60)
- Guarantee the use of agile methodologies
- Technical environment: Go, ReactJS, Swift, Kotlin, PostgreSQL, Gitlab, AWS
CTO - Cofounder
Matchers.fr & solidarite-pme.org
November 2019
to September 2021
Full-time
Paris - Montpellier
- Responsible of the product and tech roadmap definition
- Elaborate financial, marketing strategy with other cofounders
- Recruit developers in pre-seed time (1 full time, 3 interns)
- Organize activity for tech team and the whole company with agile methods
- Hands on activities: develop the proof of concept
- IT manager: as a small business, responsabilities included IT management for everyone (10)
- Technical environment: HTML/CSS/JS, Kreezalid (SaaS for marketplaces backend), Google Apps, Github
Head of Engineering - Paris
Kelkoo Group
June 2017
to October 2019
Full-time
Paris
France
- After LeGuide merge with Kelkoo, take over the engineering team in Paris - grow, develop and guide the team
- Manage 20 people, divided in 3 teams
- Serve as main point of contact between Grenoble and Paris engineering teams - lead synergies between both teams
- Lead software development project: new data processing platform for the group
- Coach engineering managers
- Lead and renew hiring processes
- Renew appraisal processes (annual interview, 360° feedbacks, job ladder)
- Ensure agility is correctly used in the teams, and at a larger scale (Scrum of Scrums, program reviews)
- Technical environment: Java, Play/Scala, Angular, Hadoop, Kafka, Solr, ElasticSearch, Redis, MS Azure, AWS, Gitlab, Jenkins, Puppet, Ansible, TDD/BDD
Operations Manager
LeGuide Group
February 2016
to June 2017
Full-time
Paris
France
- Manage LeGuide infrastructure and operations: indexation of 200 million e-commerce offers for up to 20 million unique visitors / month (250 servers)
- Manage a 7 people team + contractors
- Set up agile methodologies: Kanban
- Technical environment: CentOS, Proxmox, Varnish, PHP, Java, Solr, Hadoop, ElasticSearch, Redis, MS Azure, Gitlab, Jenkins, Puppet, Centreon
Operations Manager
ip-label
November 2010
to February 2016
Full-time
La Garenne-Colombes
France
- Manage daily ip-label metrology network, including a data processing and visualisation central system, a distribution system, and more than 150 measurement points over the world (more than 1000 servers, VMs and network equipments monitored)
- Manage a 7 people team
- Coordinate work between cross-boundaries teams (Sweden, Tunisia)
- Set up and drive ISO 9001:2008 processes for operations team; follow up the indicators and objectives
- Co-drive the collaborative project Platform for Quality Evaluation of Mobile Networks (30 months, budget 2,9 M€)
- Member of the Infrastructure and Future Industries committees at Syntec Numerique (French digital professional association)
- Technical environment: CentOS, Xen, Oracle, MongoDB, PHP, Perl, Python, Puppet, Fortigate, Nagios
Operations Deputy Manager
ip-label
November 2008
to November 2010
Full-time
La Garenne-Colombes
France
Presales Engineer Germany
ip-label
2008
Full-time
Frankfurt
Germany
- Launch and develop the ip-label Germany subsidiary: sales objectives reached after three quarters
- Design the customers architectures
Europe Customer Care Engineer
ip-label
2006
to 2008
Full-time
Levallois-Perret
France
- Analysis of QoE and performance measurements, key accounts following
- Project management and setup of complex solutions
R&D Engineer - Intern
France Telecom
February 2006
to September 2006
Internship
Lannion, Cotes-d'Armor
France
- Contribution to a study about Dynamic Bandwidth Allocation algorithms solutions, through discrete event simulation, for future passive optical access network.
- PON networks study, design with OPNET Modeler
Development Engineer - Intern
Bosch
August 2004
to February 2005
Internship
Schwieberdingen, Baden-Württemberg
Germany
- Development of web interfaces for an electronic components database
- Scripting of CGI scripts with Perl, use of Oracle and LaTeX
- Manage multidisciplinary teams with agile methods
- Manage remote teams and services providers
- Drive collaborative projects with universities, majors and SMEs
- Manage suppliers and financial budget
- Programming: Perl, Bash, Python HTML/Javascript/CSS
- General education: Algorithms/Programming (C, C++, PHP), Logic, Artificial intelligence (Predicate logic, Prolog)
- Databases: Oracle / SQL Server, replication, backup, high availability
- Network: VPN, SSH, NFS, iSCSI, QoE/QoS
- Security: Firewall (Iptables, Fortigate)
- Low level (Nagios) as well as applicative (QoE measurement) monitoring
- Environment: daily use of GNU/Linux (CentOS, Redhat, Debian, Slackware...) as well as MS Windows and MacOS, Regular use of office suites and LaTeX
- Virtualization, Cloud and Automation: Xen, VMWare, XenServer, AWS, Azure, Puppet, Gapps
- Strong interest in Web, RIA and Cloud Computing technologies
- French: mother tongue
- German: fluent (studies and work in Germany)
- English: full professional proficiency (daily use)
- Spanish: fluent (studies in Spain)
- Online courses from Stanford University
- Theoretical contents about managing, especially in multi countries or multi cultures context
- Practical use cases with evaluation are provided along the courses
Computer Science and Telecommunications Engineer
Université de Technologie de Compiègne (UTC)
2003
to 2006
Engineering studies (3 years)
. Computer Science department, major in Systems and Networks
. One semester in Computer Science and Telecommunication department of Centro Politecnico Superior (CPS) of Zaragoza (Spain)
. Computer Science department, major in Systems and Networks
. One semester in Computer Science and Telecommunication department of Centro Politecnico Superior (CPS) of Zaragoza (Spain)
Integrated preparatory class (2 years)
. DEUTEC diploma (Diplôme d’Etudes Universitaires de TEChnologie)
. One semester in Fachhochschule Esslingen (Germany)
. DEUTEC diploma (Diplôme d’Etudes Universitaires de TEChnologie)
. One semester in Fachhochschule Esslingen (Germany)
