architecture - development - operations



With 20 years in the opensource field, we accumulated a large experience in systems architecture design.
We work under the devops mantra: Culture, Automation, Measurement, Sharing.

Architecture & design

Web stack architecture, capacity planning, scale-out. Infrastructure provisionning, whether on-premises or {C,I,S,P}aaS/cloud.

Deploys & operations

Internet stack deployment. Operation and supervision 24/7/365 with post-mortems analysis and monthly operations reports. You have access to dashboards and everything is transparent. Hot-potatoes, skeletons in the closet and NotMyProblem attitude is not in our culture.

Performance optimisation & high-availability

Performance optimisation, leveraging caches, clusters and configuration "tuning", fed back by measurements. Improving uptime through highly-available setups.

Automation & measurement

Infrastucture automation (bootstrapping/deploy/management). CI/CD/CD pipelines setup. Infrastructure supervision, metrology, logging and APM (application performance maangement).

Tools we love (and run in production)

We work mostly with Ansible, Chef, Docker, ELK (Elasticsearch, Logstash, Kibana), HAProxy, Varnish, Nginx, various MySQL versions (Percona Server/XtraDB, MySQL, MariaDB & Galera), Memcached/Redis, Corosync/Pacemaker, Redis/Sentinel, Cyrus-IMAP, Docker. And yes, all of these in production. We love SaaS too, and use Git{hub,lab}, DataDog, PagerDuty, StatusCacke, AWS, DigitalOcean, Uptimerobot.

What we don't do

We do not work on non-OSS stuff, although we can help you transitioning from proprietary software to open source. We do not work in "hey put this in production, thanks" mode. We work with upstream teams to create the best workflow, so we can ship qualitiy code fast. We don't build "web sites" (we did this one, you get the idea...) although we have friend companies we can recommend that excel in this area.


Private CaaS architecture

Docker-based private CaaS

Elasticsearch capacity planning

Capacity planning for large indexes

Infrastructure Automation

Automated provisionning & deploys

High traffic web site operations

Deployment, management & operations

Large scale email infrastructure

SMTP/IMAP stack large mailstore

Application development

Specific Technical Develoment

Architecture, deployment & operations


Large Network Design and Deployment

Project CHARM

Proxy Cluster Deployment


Michel Blanc

All things Ansible, networking, webstacks. Linux addict since the SLS days, never looked back. Frequently found in his sleeping bag in he wild.

Virginie Blanc

The Boss. Handles financial, accounting, contracts and everything that geeks are allergic to. As a PagerDuty backup, she pokes the boys with a very pointy stick if her phone rings.

Erwan Arzur

Chef master & failover firefighter. Starting with Netscape, Erwan exercised his skills in Bay Area, .hk, .cn, .ua ... you name it. If he's not cooking with Chef, he's probably sailing off brittany coasts.