Guillaume CERNIER

Currently working
@

Passionate and with 16 years of experience focused on backend, architecture and design, I enjoy continuously learning and sharing knowledge about best practices, quality, scalability and other related challenging topics.

Tech skills and interests:
🧩 Backend software engineering (with also interest in full-stack one), APIs, micro-services architecture, whatever the underlying tech stacks. With higher experience on Java (incl. related frameworks like Spring) and Python ecosystems ; also always self-learning other kinds, from compiled to interpreted languages, static to dynamic ones, etc…

☁️ Cloud computing (Docker/Kubernetes, AWS, GCP, Azure, etc.)
⚙️ CI/CD toolings and processes
🔂 DevOps / 🫴 SaaS mindsets
✅ Quality focus

Education

MSc in Computer Science, 2007

ENSIMAG (Grenoble INP)

Tech stacks

Java / J2EE

Quarkus

Docker

Python

Maven & Gradle build tools

REST / JSON APIs

JavaScript frameworks

ElasticSearch

Groovy / Grails

Git through GitHub, BitBucket
and other versioning systems

Spring

Hibernate

Kubernetes

SQL/NoSQL data-sources

Clouds (GCP, AWS, Azure, etc.)

OpenAPI

GraphQL

Kafka

Vaadin

(self-learning)
Kotlin / Go / Ruby

Experience

Principal Software Engineer

Semarchy

February 2023 – Present Nice / Lyon, France 🇫🇷

Semarchy is a leading and growing provider of unified data platform enabling any kind of company to maximize business value from its ever-increasing amount of data.
And I’m currently working on strategic innovations of this platform.

Senior Software Engineer

LivePerson

May 2022 – January 2023 remotely, Nice, France 🇫🇷

Build foundations of a new CQRS-based microservices architecture.

Software Engineer

Amadeus IT Group

March 2013 – May 2022 Sophia-Antipolis, Nice area, France 🇫🇷

2021 - 2022: « Cytric » Travel & Expense Management solution

Progressive and complete migration of the solution’s backend services from legacy to brand new and state-of-the-art architecture aiming at better scalability, performance, quality, development/release practices, etc.
2016 - 2021: « Amadeus for Developers » portal

New generation of portal enabling any developer worldwide to build its own application using Amadeus APIs.
2011 (first as a consultant) - 2016:

Development of an « extensibility framework », on the PaaS (Platform-as-a-Service) model of cloud computing, enabling customization of existing e-Commerce Amadeus products.