Guillaume Delbergue, Developer in Pessac, France
Guillaume is available for hire
Hire Guillaume

Guillaume Delbergue

Verified Expert  in Engineering

DevOps, SRE, and Software Developer

Location
Pessac, France
Toptal Member Since
August 11, 2022

Guillaume is an entrepreneur who built a company focusing on DevOps and SRE expertise. He is a Kubernetes evangelist who works with security in mind, solving problems with elegance. He has created gRPC testing libraries, split clusters for efficiency, completed challenging migrations, overseen DevOps projects, managed teams with Agile, and teaches at an engineering school. Guillaume considers himself an architect and problem solver who loves to dive deep into complex tasks.

Portfolio

Hiventive
Kubernetes, Go, OpenTelemetry, Metrics, Prometheus, Loki, Grafana, GitLab, Flux...
Spliiit
Terraform, Kubernetes, Redis, MySQL, PHP 7, PHP, Vue, TypeScript, JavaScript...
Socotec
Python, Python 3, Apache Kafka, Apache Pulsar, NATS, NSQ.io, gRPC, Go, NGINX...

Experience

Availability

Full-time

Preferred Environment

MacOS, GoLand, PyCharm, Kubernetes, AWS Certified Solution Architect, Systemd

The most amazing...

...project I've developed was a Facebook app that got 250,000 users in one month when I was 13 years old.

Work Experience

CEO and CTO

2018 - PRESENT
Hiventive
  • Oversaw DevOps and architecture while managing projects through Agile methods.
  • Developed Helm charts of 20 internal microservices and external microservices as well.
  • Delivered multi-cloud, multi-cloud HA monitoring and alerting solutions, multi-cloud Kubernetes, efficient developer environments (Gitpod, Tilt, Skaffold), OPA, multi-cloud PostgreSQL, and multi-cloud S3.
Technologies: Kubernetes, Go, OpenTelemetry, Metrics, Prometheus, Loki, Grafana, GitLab, Flux, GitLab CI/CD, Harbor, Single Sign-on (SSO), Terraform, Scaleway, Helm, PostgreSQL, Redis, gRPC, WireGuard, Networks, TypeScript, Cypress, NPM, Yarn, Private NPM Modules, Python 3, Amazon S3 (AWS S3), PgBouncer, Microservices, System Architecture Design, Management, Git, Tilt, Bash Script, Cost Reduction & Optimization (Cost-down), Observation, Architecture, DevOps, CI/CD Pipelines, Containerization, Node.js, JavaScript, Amazon Web Services (AWS), Docker, Site Reliability Engineering (SRE), Datadog, Google Cloud Platform (GCP), Cloud Architecture, Cloud Services, Cloud, Security, Vulnerability Identification, NoSQL, SQL, VPN, DNS, API Gateways, Amazon CloudWatch, Amazon Virtual Private Cloud (VPC), Unix, Python, Java, Cloud Computing, Kubernetes Operations (kOps), Bash, Infrastructure, OpenStack, Firewalls, Dynamic Host Configuration Protocol (DHCP), Linux Administration, Open vSwitch, Windows System Administration, Containers, Infrastructure as Code (IaC), Solution Architecture, Data Structures, AWS DevOps, Amazon Elastic Container Registry (ECR), Amazon Elastic Container Service (Amazon ECS), Amazon EC2, Next.js, Non-fungible Tokens (NFT), SonarQube, Back-end, High-availability Systems, Systemd, Continuous Integration (CI), Continuous Delivery (CD), Identity & Access Management (IAM), Cloud Migration, Kibana, Vagrant, AWS IAM, Boto 3, Microsoft Azure, DigitalOcean, DevOps Engineer, Prisma, Amazon EKS, Linux, Amazon RDS, AWS Lambda, GitOps, CentOS, LXC, Puppet, Elasticsearch, Amazon Cognito, Embedded Linux, Embedded Systems, Test Automation, Perl, NGINX, REST APIs

Senior SRE

2022 - 2023
Spliiit
  • Analyzed the existing application architecture using monolith, Redis, MySQL, and SSHFS. Identified bottlenecks for scalability.
  • Removed SSHFS for data storage (SPOF and not scalable), moving to S3. Used CDN and Helm Charts for applications and microservices for more-grained scalability.
  • Deployed traffic and data to Kubernetes and production migration.
Technologies: Terraform, Kubernetes, Redis, MySQL, PHP 7, PHP, Vue, TypeScript, JavaScript, Helm, Grafana, Prometheus, OVH, Scalable Architecture, Scalable Application, Cloud Architecture, Perl, Cloudflare, REST APIs

Architect

2022 - 2023
Socotec
  • Carried out the analysis of an existing event-driven solution in a complex application. Studied different solutions according to the app requirements.
  • Worked on the POC of the solution improving AuthN/AuthZ and monitoring.
  • Contributed to the industrialization of the solution using Kafka to manage millions of events.
Technologies: Python, Python 3, Apache Kafka, Apache Pulsar, NATS, NSQ.io, gRPC, Go, NGINX, REST APIs

Senior SRE

2022 - 2022
Collectif Energie
  • Carried out the analysis of the existing infrastructure to improve application design for multiple tenants.
  • Worked on the new cloud architecture design for better scalability and fixed internal issues.
  • Set up the infrastructure using GitOps and Kubernetes and deployed it to Scaleway.
Technologies: Terraform, Scaleway, Kubernetes, Odoo, Helm, Grafana, Prometheus, Cloud Architecture, Scalable Application, Scalable Architecture, Backups, High Availability Disaster Recovery (HADR), NGINX, REST APIs

Senior SRE

2021 - 2022
Talend
  • Migrated from MongoDB Legacy, multi-clusters, and multi-regions on AWS and Azure to MongoDB Atlas. Split one cluster into many to better handle the load and preparation for sharding. A new schema refactoring was completed for global clustering.
  • Completed the migration application for a one-to-many cluster data migration. Built using Go, an Apache Atlas API, and the MongoDB protocol.
  • Built a MongoDB exporter using Go to export the app and cluster and Atlas metrics for an internal monitoring solution.
Technologies: Kubernetes, MongoDB, Azure, Flux, Go, Terraform, Grafana, Thanos, System Architecture Design, Migration, Ansible, Skaffold, Vault, GitHub, GitHub Actions, Helm, Atlas, PostgreSQL, Apache Kafka, Strimzi, ActiveMQ, Redis, MinIO, Observation, Architecture, DevOps, CI/CD Pipelines, Azure DevOps, Azure Kubernetes Service (AKS), Containerization, Amazon Web Services (AWS), Docker, Jenkins, Site Reliability Engineering (SRE), Cloud Architecture, Cloud Services, Cloud, Security, Vulnerability Identification, NoSQL, SQL, VPN, DNS, API Gateways, Amazon CloudWatch, Amazon Virtual Private Cloud (VPC), Unix, Python, Cloud Computing, Bash, Infrastructure, Firewalls, Dynamic Host Configuration Protocol (DHCP), Linux Administration, Containers, Infrastructure as Code (IaC), Solution Architecture, Data Structures, AWS DevOps, Amazon Elastic Container Registry (ECR), Amazon Elastic Container Service (Amazon ECS), Amazon EC2, Back-end, High-availability Systems, Systemd, Bash Script, Continuous Integration (CI), Continuous Delivery (CD), Identity & Access Management (IAM), Azure Active Directory, Kibana, AWS IAM, Okta, Microsoft Azure, SOC 2, DevOps Engineer, Amazon EKS, Linux, Amazon RDS, GitOps, LXC, Elasticsearch, Amazon DynamoDB, Test Automation, Apache Atlas, REST APIs

Lead and Senior SRE

2021 - 2021
L'Oreal
  • Created Terraform modules for GCP. Reviewed the existing architecture and report. Worked on front-end, back-end, and data analytics templates, documentation, and best practices.
  • Worked on new architecture using Terraform, Git, GitHub, Python, TypeScript, API, and design.
  • Developed ready-to-use templates for different teams such as data scientists and front- and back-end developers.
Technologies: Google Cloud Platform (GCP), Terraform, Git, GitHub API, Python, TypeScript, APIs, Nuxt.js, Linux, Test Automation, REST APIs

Senior SRE

2021 - 2021
The Blockchain XDEV
  • Reviewed existing architecture to move to a more robust and secure infrastructure, making a new development system for developers.
  • Performed migration of existing microservices to a multi-tenant Kubernetes infrastructure.
  • Made better development systems for developers, reduced costs for infrastructure, and achieved better results.
Technologies: Google Cloud Platform (GCP), Google Kubernetes Engine (GKE), Helm, Tilt, Vault, Web Security, Java, GitLab CI/CD, DevOps Engineer, Linux, Test Automation, NGINX, REST APIs

Lead Developer of Web and Server

2014 - 2015
FabZat
  • Completed PHP web development with the Symfony 2 framework and API design.
  • Served as the systems and network administrator to maintain and upscale according to load.
  • Migrated 3D model data for 3D printing and simulation.
Technologies: PHP 7, Symfony, MySQL, VMware, Linux, Git, GitLab, GitLab CI/CD, Apache, OVH, DevOps, CI/CD Pipelines, Containerization, Node.js, Docker, Cloud Architecture, Cloud Services, Cloud, Security, SQL, VPN, Unix, Cloud Computing, Bash, Infrastructure, Firewalls, Dynamic Host Configuration Protocol (DHCP), Linux Administration, Containers, Solution Architecture, Data Structures, Amazon Elastic Container Service (Amazon ECS), Amazon EC2, Back-end, High-availability Systems, Systemd, Bash Script, Continuous Integration (CI), Continuous Delivery (CD), Identity & Access Management (IAM), AWS IAM, DevOps Engineer, CentOS, LXC, Puppet, Test Automation, NGINX, REST APIs

gRPC Test Library

Created a generic Go gRPC testing library for the E2E testing of microservices. It handles Unary and Stream RPC, metadata, custom callbacks, field, map, array checks, and richer errors. It's compatible with native Go.
2015 - 2017

Ph.D. in Computer Science

University of Bordeaux - Bordeaux, France

2013 - 2014

Master's Degree in Embedded Systems

University of Rennes - Rennes, France

2011 - 2014

Engineer's Degree in Computer Engineering

ENSSAT - Lannion, France

Libraries/APIs

REST APIs, Node.js, Thanos, GitHub API, NSQ.io, Vue

Tools

Terraform, Helm, Git, GitLab, GitLab CI/CD, AWS IAM, Amazon EKS, NGINX, Grafana, Vault, Azure Kubernetes Service (AKS), Jenkins, VPN, Amazon CloudWatch, Amazon Virtual Private Cloud (VPC), Amazon Elastic Container Registry (ECR), Amazon Elastic Container Service (Amazon ECS), Systemd, Kibana, Vagrant, Puppet, Amazon Cognito, JetBrains, GoLand, PyCharm, Ansible, GitHub, VMware, Apache, WireGuard, NPM, PgBouncer, ActiveMQ, SonarQube, Boto 3, Google Kubernetes Engine (GKE), Prisma, Odoo

Languages

Go, Bash Script, SQL, Bash, TypeScript, JavaScript, Python, Java, Embedded C++, Embedded C, PHP 7, Python 3, PHP, Perl

Paradigms

Microservices, Management, DevOps, Continuous Integration (CI), Continuous Delivery (CD), Test Automation, E2E Testing, Azure DevOps, Scalable Application

Platforms

MacOS, Kubernetes, Linux, Amazon Web Services (AWS), Docker, Unix, Amazon EC2, Azure, Apache Kafka, Google Cloud Platform (GCP), DigitalOcean, AWS Lambda, CentOS, Embedded Linux, ARM Linux, Harbor, OpenStack

Storage

MongoDB, PostgreSQL, Redis, Amazon S3 (AWS S3), NoSQL, Elasticsearch, Amazon DynamoDB, MySQL, OVH, Datadog, Azure Active Directory

Frameworks

Flux, Next.js, Symfony, gRPC, Cypress, Yarn, Nuxt.js

Other

Simulations, Software Development, System Architecture Design, Architecture, CI/CD Pipelines, Containerization, Cloud Architecture, Cloud Services, Cloud, Cloud Computing, Infrastructure, Linux Administration, Containers, Infrastructure as Code (IaC), Solution Architecture, Data Structures, Back-end, Cloud Migration, DevOps Engineer, Prometheus, Site Reliability Engineering (SRE), Security, DNS, API Gateways, Kubernetes Operations (kOps), Firewalls, Dynamic Host Configuration Protocol (DHCP), AWS DevOps, High-availability Systems, Identity & Access Management (IAM), Okta, Microsoft Azure, Amazon RDS, GitOps, LXC, Embedded Systems, Cloudflare, Research, Technical Writing, Migration, Skaffold, GitHub Actions, ARM Embedded, Signals, Kalman Filtering, Software, Hardware, Algorithms, OpenTelemetry, Metrics, Loki, Single Sign-on (SSO), Scaleway, Networks, Private NPM Modules, Tilt, Cost Reduction & Optimization (Cost-down), Atlas, Strimzi, MinIO, Observation, Vulnerability Identification, Open vSwitch, Windows System Administration, Non-fungible Tokens (NFT), Web Security, SOC 2, APIs, Apache Pulsar, NATS, Scalable Architecture, Backups, High Availability Disaster Recovery (HADR), Apache Atlas

Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring