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Maël Regnery

Maël Regnery

Sr Staff Backend Engineer at Consensys

I am a passionate engineer, naturally enthusiastic and curious who believes in disruptive solutions, especially in decentralized technologies. My DevOps/Reliability background and my appetite for developing robust applications pushes me to dive deeper into the systems to understand the inner workings

Leadership
Team Work
Hard Working

Skills

Experiences

1
Consensys

Jan 2022 - Present

Fully remote

Consensys is a leading company in the web3 ecosystem.

Senior Staff Backend Engineer - Infura / MetaMask

July 2024 - Present

Responsibilities:
  • Improve the whole blockchain node snapshot management with a more reliable and cost efficient solution.
  • Investigate performance issues, fix bugs in an in-house load balancer and draft the roadmap for its future.
  • Investigate performance degradations, network incidents and work with the partners to implement fixes.
  • Work in collaboration with other leads in roadmaping and scoping the projects.
Staff Backend Engineer - Infura

Dec 2022 - July 2024

Responsibilities:
  • Lead the development of the Kubernetes Operator for managing blockchain nodes (roadmap, refactoring, implementation and promotion).
  • Take part in critical migrations (from Pulumi to EKS with ArgoCD, from DataDog to Grafana/Prom/Loki/Tempo) and drive the early stage adoption.
  • Push for groundbreaking changes in our tools (generic blockchain healthcheck system, network upgrade tracking system) and processes (product and technical scoping, incident management).
Senior DevOps - Consensys Professional Services

Jan 2022 - Dec 2022

Responsibilities:
  • Build reliable platforms with AWS, EKS and Grafana/Loki/Prometheus.
  • Instrument applications with Opentelemetry and Prometheus.
  • Identify faults (spikes, failures, bad timeout management) and implement application fixes (caching, throttling, failover).
  • Setup CI/CD and onboard the developers to be fully autonomous into the release cycle.
Doctolib

Sep 2018 - Dec 2021

Paris

Doctolib is a company proposing an online consultation management service for healthcare professionals and an online appointment booking service for patients.

DevOps - Developper Experience Team

Dec 2020 - Dec 2021

Responsibilities:
  • Scale-up the test execution platforms from a single kubernetes cluster to five.
  • Investigate kubernetes scaling limits (clusters running 10+k pods with high churn rate).
  • Improve internal application for visual regression testing.
DevOps - Infrastructure Team

Sep 2018 - Dec 2020

Responsibilities:
  • Shift from a traditional on-premise hosting to kubernetes clusters hosted in AWS.
  • Implement the platform autoscaling.
  • Investigate critical production incidents and implement fixes.
  • Improve practices around terraform with code organization, module documentations and testing.
  • Introduce infrastructure testing using terratest.
  • Automate the creation and destruction of a multi-region development environment and orchestrate a daily build.
2
3
Thales

Dec 2016 - Aug 2018

Vélizy (Paris area)

Thales is an electronics group specializing in aerospace, defence and security.

DevOps Infra As Code

March 2017 - Aug 2018

Responsibilities:
  • Automation of applications in the private cloud OpenStack, adopting the DevOps approach.
  • Development of Ansible roles, modules and filters for a company adoption.
  • Overhaul of the process and code organization, push forward a test oriented infrastructure development.
  • Organize code review, teammates coaching.
System administrator

Dec 2016 - April 2017

Responsibilities:
  • Development of OpenStack-based Thales public cloud billing-per-second application (2500+ VM).
  • Development and integration of OpenStack services orchestration tools.
  • Dockerization of internal applications.
  • Organize internal tech discussion.
Waycom International

Feb 2015 - Dec 2016

Suresnes (Paris area)

Telecom operator, hosting and managed hosting provider.

Linux System administrator

Feb 2015 - Dec 2016

Responsibilities:
  • Automation of deployments on high availability platforms with Ansible.
  • Implementation of Docker infrastructure, continuous integration in our image catalogue.
  • Python tool development: APIs interfacing with Gitlab Webhook, Ansible REST APIs
  • Proactive support (assistance, audit and performance analysis), participation in on-call 24/7.
  • Complete overhaul of the email architecture (design, implementation, migration), automation, Perl script development (CPAN contribution)
  • Technical reference for several large clients
4
5
Altitude Concept

Oct 2013 - Oct 2014

Kinshasa (Dem. Rep. of Congo)

Technical Manager

Oct 2013 - Oct 2014

Responsibilities:
  • Selecting software solutions, writing workbooks charges, charters of use, feasibility analysis depending on the portfolio
  • Active participation in developments of systems architectures, portals and websites, and telephone and security solutions
  • Facilitation of technical meetings with companies
Institut Supérieur d'Informatique Chaminade

Nov 2011 - Oct 2013

Kinshasa (Dem. Rep. of Congo)

International Solidarity Volunteer

Nov 2011 - Oct 2013

Responsibilities:
  • In charge of the course: General Electronics, Electronics Digital and Fundamental Computing.
  • Network architecture redesign, implementation of basic services Samba, Squid, Asterisk, Triad, Apache.
6
7
Moncton University

April 2010 - Aug 2010

Moncton (Canada)

Intern

April 2010 - Aug 2010

Responsibilities:
  • Manufacture of fibre optic components microstructured.

Education
Université de Versailles Saint-Quentin-en-Yvelines
2013-2014
Licence Professionnelle Réseaux et Télécommunications, Administration et Sécurité des Réseaux
Université Joseph Fourier (Grenoble I)
2012-2016
Licence STS mention Génie Electrique
IUT de Rouen
2008-2010
DUT Génie Electrique et Informatique Industrielle

Achievements

Trailer, Triathlete

Dad