Senior Platform Engineer / Site Reliability Engineer (SRE)

The role

You will build and operate a cloud platform on AWS to enable engineering teams to deliver software safely and reliably. The role involves working with Kubernetes, automation, and cloud infrastructure to improve developer productivity and platform resilience.

What you will do

• Design, build and continuously improve Cognism's cloud platform running on AWS.
• Develop Infrastructure as Code using modern automation practices.
• Build and maintain Kubernetes platforms supporting engineering teams globally.
• Improve deployment pipelines, CI/CD workflows and developer productivity.
• Drive observability through monitoring, logging, alerting and distributed tracing.
• Participate in incident response, root cause analysis and reliability improvements.
• Partner with Engineering, Security and Architecture teams to improve platform resilience.
• Identify opportunities for cloud optimisation and FinOps improvements.
• Promote AI-assisted engineering practices for infrastructure and operations.

Required qualifications

• 5+ years in Platform Engineering, SRE or DevOps.
• Hands-on AWS experience in production environments.
• Strong Kubernetes administration and troubleshooting skills.
• Experience building CI/CD pipelines and deployment automation.
• Infrastructure as Code using Terraform or equivalent.
• Experience operating production systems with high availability requirements.
• Strong scripting or programming skills (Python, Go, Bash or similar).
• Excellent communication skills, fluent English.

Nice to have

• Kafka or distributed event streaming platforms.
• Service Mesh technologies.
• FinOps experience.
• Security hardening of cloud platforms.
• Experience with AI-powered engineering tools such as Claude Code, Cursor or GitHub Copilot.

About the company

Cognism is Europe's leading B2B Sales Intelligence platform. They are building a strategic Warsaw Engineering Hub as one of their two primary technology centres.