Site Reliability Engineer: Cloud, Docker & Kubernetes

Centricsoftware; Paris; On-site; EUR 80,000 - 110,000; Full time

Job summary

Centric Software is seeking a Site Reliability Engineer to join our team in Paris. You will support our SaaS platform, working closely with software developers and infra engineers, security, and QA teams.

You will diagnose and resolve reliability and performance issues, tune the web-serving stack, and own deployment and upgrade processes end-to-end. Collaboration with product teams will drive continuous improvements.

Qualifications

• 2+ years proven experience with Linux CLI.
• 2+ years proven experience with Docker or other container technology.
• Strong hands-on experience with PHP applications and their runtime (php-fpm).
• 5+ years proven experience with Git.
• Knowledge across Linux Kernel, Load Balancing, AWS S3, containers orchestration, MySQL/MariaDB and Elasticsearch.
• B2 English

Responsibilities

• Diagnose and resolve application-level reliability and performance issues across the pull request path (nginx -> php-fpm -> application -> database/cache).
• Tune and scale the web-serving layer under production load (php-fpm pool sizing, nginx timeouts, capacity planning).
• Configure and troubleshoot nginx as reverse proxy/web server (timeouts, buffering, upstream keepalive, 502/504).
• Develop, maintain, and support Docker-based workloads.
• Own the product deployment and upgrade process end to end.
• Support and troubleshoot running customer-facing services.
• Collaborate with product teams to plan improvements and roll them out.
• Define reliability metrics and ensure system health across services.
• Participate in On-Call and On-Duty rotations.

Skills

Linux CLI

Docker

PHP runtime debugging

Git

Cloud technologies

MySQL/MariaDB

Elasticsearch

Load balancing

Tools

Kubernetes

CI/CD tools

Terraform

Ansible

AWS

Datadog/Prometheus

RabbitMQ

Job description

Centric Software is seeking a Site Reliability Engineer to join our team in Paris. You will support our SaaS platform, working closely with software developers and infra engineers, security, and QA teams.

You will diagnose and resolve reliability and performance issues, tune the web-serving stack, and own deployment and upgrade processes end-to-end. Collaboration with product teams will drive continuous improvements.