Check out my latest project PullPreview - Deployment previews for your pull requests, on servers you control

Products Consulting Journal About

I have been consulting since 2013, and have been involved in a wide range of technical topics, both in development and operations. If you're looking for lead-dev / CTO-like level of skills, I can deliver.

Over the years I developed a strong ability to get up and running on new/existing projects very quickly. Also, having products (and paying clients) myself means I understand what drives a business and can often find solutions that were not envisioned by other tech people.

My main interests right now

• Development of Ruby on Rails apps, with the Hotwire suite (Turbo / Stimulus) + Turbo Native (iOS & Android) apps.

• Streamlining deployment pipelines. Compared to the usual deployment tooling, orchestration tools such as Kubernetes or Convox give you at least a 10x velocity for deploying apps, for at least half of the cost.

• Hosting high traffic websites, and finding every way to reduce hosting bills with agressive caching (both HTTP and application-level), performance improvement in the hosted apps (less time spent processing requests = less servers needed), profiling and refactoring hot paths, and last but not least, better usage of cloud providers.

Some examples of things I've done in the past

• Greenfield RubyOnRails projects (obviously), including real-time features, heavy frontend JavaScript work, database optimizations.

• Revamping AWS infrastructure for a company offering a SaaS, reducing AWS bill from $15k to $2.5k. And at the same time, getting them a nice platform and continuous integration system to build, test, deploy, and monitor their services.

• Migrating large (and critical) RubyOnRails projects from Rails2.x/Ruby1.8 to Rails4.x/Ruby2.x (and then Rails 5.x and 6.x), adding a strong test suite and CI pipeline to ensure the main features were working with the new stack as we went over the numerous changes required to upgrade.

• Setup of CI/CD systems.

• Setup of infrastructure provisioning with Puppet.

• Migrating applications to docker, and everything that goes with it.

• Writing tests, both as blackbox tests against legacy systems to prepare for a migration, and unit/integration/system tests.

• Advising and implementing Single Sign On solutions.

• ElasticSearch interactions (indexing, aggregations, reporting).

I'm preferably working remotely, but for larger projects I will generally travel to meet your team at the beginning of the contract. I can also work on site if you're based in the region of Rennes, France.