Guillaume Delhumeau

Lead Infrastructure Engineer

Our team is responsible for the hosting of our services. Our scope goes from clients' custom servers to cloud clients, internal services and networks. We are currently handling more than 700 virtual machines.

Our missions are:

• responding to the needs of our clients and the other teams of the company (server configuration, services deployment, maintenance, consulting) ;
• creating reliable backups of all our data and making sure that we could easily recover them ;
• monitoring all our services to make sure they are reliable, performant, and make sure our clients are happy ;
• taking care of the security of all our hosted services by detecting attacks and implementing the latests security practices (being pro-active in this field is essential) ;
• making sure we have a modern infrastructure, including using the "infrastructrue as code" approach.

Our team is entirely made of remote workers from different parts of the world (Europe, America).

In our missions, we try to use state-of-the-art technologies and develop our owns.

As a manager, my role is to make sure all members of the team are aligned with our prorities, that all of them could perform their work without artificial boundaries, to make sure that our work is quality and documented, and help any member of the team when he faces a difficult problem.

In addition, I still operate the XWiki Cloud service.

Cloud Engineer (DevOps)

Development of micro services for the creation, the configuration and the maintenance of hundreds of virtual machines dedicated for the clients of the XWiki Cloud offer.

Deployment, maintenance and support of the production service.

These services are written in Java and use the VMWare WebSphere API. They communicate through REST API and RabbitMQ for asynchronous messages. The machines are configured via Ansible scripts, and are delivered to the clients within 20 seconds.

Also used: XWiki framework, OpenVPN, DNSMasq, Puppet, NginX, Linux, Vagrant...

Product Developer (Full Stack)

Design & development of new features in the XWiki Open Source product, used by major companies such as Amazon, EMC2, DCNS, Chronopost, SFR...

Maintenance of the software with high quality standards (checkstyle, unit tests, integration tests, retro compatibility of the API, code reviews, continuous integration).

Writing of documentation and the release notes. Collegial decisions are made on the project's mailing list.

Also used: Java, Maven, SQL, JavaScript, jQuery, KnockoutJS, HTML5, Bootstrap, LESS, CSS, SeleniumHQ, Git, GitHub, Jenkins, JIRA...

Full Stack Developer

Development & consulting for several clients of the company: Aelia (Lagardère), RTE (Réseau éléctricité de France), Vente-privée.com, Voyages-privées.com, Chronopost...

Coaching to train new developers both in the company and the outside.

During my main mission, I made a portal dedicated to the management of special offers for hundreds of shops all over the world. I was in charge of the specifications writting, with direct discussion with the clients, in Agile principles (frequent develery and continuous feedbacks).

Institut des Mathématiques Appliquées (IMA) - Université Catholique de l'Ouest (UCO) - Angers

Institut des Mathématiques Appliquées (IMA) - Université Catholique de l'Ouest (UCO) - Angers