Jean-Sebastien Trille
Verified Expert in Engineering
DevOps Engineer and Developer
London, United Kingdom
Toptal member since June 22, 2022
Jean-Sebastien is a senior site reliability engineer and a DevOps engineer with comprehensive experience designing infrastructure platforms. Specialized in Kubernetes, containers, observability tools, microservices, GitOps, CI/CD, and Infrastructure as Code, Jean-Sebastien is looking forward to embracing new and challenging projects.
Portfolio
Experience
- Elasticsearch - 6 years
- Python - 6 years
- Amazon Web Services (AWS) - 4 years
- Amazon RDS - 3 years
- Prometheus - 3 years
- Kubernetes - 3 years
- Go - 3 years
- Amazon EKS - 3 years
Preferred Environment
Amazon Web Services (AWS), Kubernetes
The most amazing...
...thing I've done was delivering and maintaining a large fleet of production Kubernetes clusters for various customers.
Work Experience
Senior DevOps
Callsign
- Deployed and managed a fleet of 20+ Kubernetes clusters using AWS EKS and EC2 Auto Scaling groups (ASG).
- Configured services with horizontal Pod autoscaling, topology constraints, and Pod disruption budget for high availability.
- Handled worker nodes scaling with cluster autoscaler and EC2 on-demand and spot instances by maintaining high availability spot instances for abrupt terminations with spot termination handler.
- Developed A/B cluster upgrade approach to de-risk system components and Kubernetes upgrades.
- Built a Kubernetes mutating webhook in Go to inject secrets from HashiCorp Vault to newly deployed workloads.
- Managed Gitlab pipelines for building, testing, quality, security, and deploying Java, Python, and Go applications over Kubernetes and AWS Fargate. Also, managed a GitOps solution to automate the deployment of applications defined by Helm.
- Used Fluent Bit, Packetbeat, and Fluentd in combination with ELK for logging purposes and Prometheus, Alertmanager, and Grafana for monitoring crafted alerts and dashboards.
- Set up a support team of upskilled developers for self-service, built runbooks templates for common issues, created a new ticketing space using Jira, and set automation to integrate it with Microsoft Teams.
- Developed Infrastructure as Code with Terraform and AWS CloudFormation, refactored complex arrangements of dozens of Terraform modules, and architectured a new infrastructure model to increase velocity and reduce cost and complexity proliferation.
Experience
Blue/Green Kubernetes Cluster Rollout
Education
Master's Degree in Computer Systems and Networks
Toulouse INP-ENSEEIHT - Toulouse, France
Skills
Tools
Amazon EKS, Ansible, Istio
Platforms
Amazon Web Services (AWS), Kubernetes
Languages
Go, Python
Storage
Elasticsearch
Other
Prometheus, Amazon RDS, Networks
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