Skills
- IT culture: Frequent usage and regular contributor to free/open source software projects; strong free/open source software community knowledge
- Open source contributions: collectd, syslog-ng, Facette
- Networking protocols: TCP/IP, OSI, 802.3, WLAN, VLAN (good knowledge), OSPF, BGP (basic knowledge)
- Application protocols: DNS, DHCP, RADIUS, HTTP(S), SSH, FTP, LDAP, SMTP, IMAP, POP3
- Programming languages: Bash scripting (strong knowledge), C, Go, Python, AWK (good knowledge)
- Operating systems: GNU/Linux Debian/Ubuntu/Gentoo/Arch Linux (strong knowledge), OpenBSD, FreeBSD, Mac OS X (good knowledge)
- Databases: SQL (good knowledge), MySQL, PostgreSQL, SQLite (good knowledge), Elasticsearch, Cassandra (basic knowledge)
- Configuration management/automation: Terraform, Packer, Ansible, Salt, Puppet, Chef, Mcollective (good knowledge)
- Message-oriented middleware: AMQP/MQTT Protocols, ZeroMQ, RabbitMQ, Mosquitto (good knowledge)
- Monitoring/metering: Prometheus, Nagios, Collectd, Graphite, RRDtool, InfluxDB, Riemann
- Data storage: NFS, LVM, software RAID with GNU/Linux (MD)
- Cloud/Virtualization: Amazon Web Services, Google Cloud Platform, Exoscale, Kubernetes, Docker, Linux KVM
Experience
09/2018 - currently: System engineer at Exoscale (via Cobalt Core)
- SDN (Software Defined Networking) features implementation/maintenance
- Hypervisor-local agent features implementation/maintenance
- CLI tool features implementation/maintenance
- HashiCorp Terraform provider implementation/maintenance
- HashiCorp Vault backend plugin implementation/maintenance
- HashiCorp Packer post-processor implementation/maintenance
- Go/Python language bindings library implementation/maintenance
- Applications migration to Kubernetes
- Documentation and tech blog articles writing
- Features/products definition
- Roadmap management
- Client support
10/2018 - 12/2018 : Cloud Architecture & Automation Consultant for Passions App (via Cobalt Core)
- Cloud architecture & migration consulting (AWS)
- Infrastructure Automation improvement projects (Terraform)
09/2018 : Cobalt Core company establishment
09/2017 - 08/2018: Cloud Architecture & Automation Consultant at D2SI
- Cloud architecture & migration consulting
- Technical training design & animation (Linux beginner, hands-on introduction to Amazon Web Services, hands-on introduction to Google Cloud, introduction to Docker)
- Technical writing & editing (Observability white paper, HashiCorp Terraform module development introduction)
- Open source software development workshops animation
- Google Professional Cloud Architect Certification
09/2014 - 09/2017: Lead operations engineer at happn
- Design and full implementation of the infrastructure and its industrialization and monitoring
- Live infrastructure migration from bare-metal servers to 100% cloud-based hosting
- Operations tooling/software development (shell, Python, Go, C)
- Involved in in-house back-end software architecture and design
- Operations team leader (2 collaborators)
12/2013 - 06/2014: Operations engineer at Gandi S.A.S.
- Monitoring/metering infrastructure design & setup
- Usual platform run operations
03/2013 - 12/2013: Production engineer at Cloudwatt
- Monitoring/metering infrastructure design & setup
- Logs & events collect/indexing/consultation infrastructure design & setup
- Server orchestration infrastructure design & setup
- Industrialized server configuration management
- Software development: mod_bunny, a Nagios NEB module for distributing monitoring checks with RabbitMQ
07/2011 - 03/2013: Systems and network administrator at e-merchant (Pixmania group)
Systems Administration
- Monitoring/metering infrastructure setup
- Web caching and HTTP filtering setup
- Dynamic web frontend services setup
- Development of various monitoring and automation software tools
Network Administration
- Cisco routers/firewalls setup & administration
- F5 load-balancers setup & administration
- Network appliances configuration versioned backup setup
Misc
- Technical advisor for a team of 4 sysadmins, operations build/run reporting.
- Editing French/English technical documentation.
- On-duty call, systems migrations.
Systems/Network Administration
- Monitoring/metering infrastructure setup (Nagios, NSCA, NRPE, SNMP, Collectd)
- Web caching and HTTP filtering setup (Varnish)
- Dynamic web frontend services setup (Nginx)
- Mail (SMTP/IMAP/POP3) gateway/reverse proxies setup (Postfix, Perdition, Keepalived)
- Network administration: switching, routing, firewalling, load-balancing, VPN (Juniper, Fortinet, OpenBSD)
- Proof of concepts and experimentation on asynchronous backend task management (Gearman)
Web Operations Management
- Manager & technical advisor for a team of 6 sysadmins.
- On-duty call, systems migrations.
- Supervision of full datacenter migrations.
12/2006 - 04/2010: Systems and network administration for Orange France web portals hosting de Orange (via the IT services company Orness)
Systems Administration
- Resilent multi-layer loghosts setup (Syslog-NG, LVS, MySQL)
- Multi-datacenters DNS infrastructure setup (BIND, Subversion)
- Web frontend servers setup (Apache, Lighttpd)
- Metrics and logs aggregation infrastructure for web services applications setup + dashboard web implementation (Syslog-NG/Apache/MySQL/Perl/RRDtool)
- On-duty call, systems migrations
Network Administration
- Switches, routers, firewalls and load-balancers management (Nortel, Cisco, F5, Keepalived, Quagga)
- Global load-balancing infrastructure implementation using F5 BIG-IP GTP (Global Traffic Manager) appliances
- Secure and centralized authentication infrastructure implementation for network appliances using FreeRADIUS/OpenLDAP as identity backend
- 802.1X/EAP implementation on office network switches, using FreeRADIUS/OpenLDAP as identity backend
Education
Degrees
- 2013: IT engineer, "Expert en Informatique et Systèmes d'Information" ("Information systems expert"). Ingésup, Paris
- 2006: Specialization in IT security at CESI, Arcueil.
- 2005: BTS informatique de gestion. Lycée G. St-Hilaire, Etampes.
- 2003: Baccalauréat STI électrotechnique. Lycée L. De Vinci, St-Michel s/Orge.
Trainings/courses
- 2018: Google Professional Cloud Architect certification
- 2009: ITIL V3 Foundation certification
- 2008: Network training - RIP, EIGRP, OSPF, BGP4 (Cisco appliances)
- 2005: Cisco CCNA 1, 2, 3, 4.
Languages
- French: native language
- English: fluent
Projects
- Facette: Time series data visualization and graphing software
Publications
- May 2011: GNU/Linux Magazine France #138 — Varnish, un proxy qui vous veut du bien (An introduction to Varnish)
- July/aug. 2011: GNU/Linux Magazine France #140 — Plus loin avec Varnish (A more technical article about Varnish)
- Nov. 2011: GNU/Linux Magazine France #143 — À la découverte de RRDtool (An introduction to RRDtool)