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Guillaume Le Biller
« Any fool can know. The point is to understand. »
Kubernetes Flux Chef AWS VMware Terraform Jenkins GitHub PagerDuty DataDog ELK InDesign Premiere
Professional training

2021Certified Kubernetes Administrator (CKA)

2016 – Project team leadership & management

2015 – Agile SCRUM.org : Modules 1 & 2

2009 – Engineer's degree at Télécom Bretagne

Lead Infrastructure & Platform Engineer

February 2019 — Today | Traveldoo, Expedia

Architecture and design

  • Design a Kubernetes infrastructure to accelerate development cycle.
  • Analyse performances problems in databases handling 6 TB of data.
  • Identify scalability bottlenecks on webapps that handle 5 million req/days.
  • Supervise and streamline PCI-DSS and SSAE audit through automation.
  • Establish GitOps culture to enforce security, provide reliability and stability.
  • Summarise ideas and present schedule and plan to leadership.
  • Develop an AWS Infrastructure strategy aligned with the group.
  • Maintain logging infrastructure handling 1 TB of logs per month.

Organisational and Management

  • Make decision on infrastructure, security and delivery tools.
  • Manage and coach seven engineers and delegate responsibilities.
  • Oversee company-wide project across 5 geographically dispersed teams.
  • Train and guides dev teams with workshops and presentations.
  • Handle communication and coordination in critical incidents.
  • Transform legacy IT team into an Agile and DevOps oriented team.
  • Predict future infrastructure needs and forecast budgets and planning.

Infrastructure & Platform Engineer

January 2017 — February 2019 | Traveldoo, Expedia
  • Improve delivery pipeline handling 3 deployments per day from 10 per year.
  • Deploy High Availability components to increase uptime above 99.9%.
  • Automate release and validation of ~500 projects with Maven and Jenkins.
  • Reduce house-keeping time by 90% of ~200 virtual machines with Chef.
  • Enhanced post-upgrade stability to 100% with Jenkins and monitoring.
  • Provide performance and optimisation feedbacks based on metrics.
  • Upgrade implementation processes taking hours to less than 2 minutes.
  • Wrote and tested Chef cookbooks & policies to enforce security policies.
  • Examine requirements to provide well-thought self-service tools.
  • Implement monitoring and alerting of infrastructure and applications.

Java Software Engineer

January 2014 — January 2017 | Traveldoo, Expedia
  • Identify customers’ needs to design and implement the best solution.
  • Coach new team members and provide technical recommendations.
  • Coordinates and lead a team of 6 in an agile environment.

Java Software Engineer

April 2011 — December 2013 | Ekino
  • Design, develop and deliver new features in production.
  • Advise on quantitative estimates and technical feasability.

Android Developper

2012 | Freelancer
  • Development and release of an Android application with a Java backend server.
  • Native responsive design and built-in notifications.

PHP Developper

2010 — 6-month internship| WebFullCircle – Charlotte, USA
  • In-house CMS solution development and websites implementation.
  • Analytics, Search Engine Optimisation and page speed improvement on existing sites.