Principal Site Reliability Engineer
Sigma Software GroupWarsaw, Masovian Voivodeship, Poland
Posted May 5, 2026
Full Time
About the Company
Sigma Software Group is a leading IT consultancy with over two decades of experience, offering comprehensive solutions to businesses across various sectors. With a team of over 2,100 professionals in 40 offices worldwide, they specialize in IT consulting, software development, web development, and AI solutions, among other services. Their commitment to innovation is evident through initiatives like Sigma Software Labs and collaborations with venture capital funds, making them a trusted partner for cutting-edge product development.
Job Description
We are looking for a Principal Site Reliability Engineer to lead infrastructure strategy for a cutting-edge AI-driven SaaS platform. The role involves designing scalable, resilient systems, optimizing build, testing, and deployment processes, and establishing best practices for CI/CD, monitoring, and observability.
Requirements
- At least 8 years of experience in Site Reliability Engineering or DevOps roles, including 2+ years in a Principal or Lead position
- Proven experience in infrastructure modernization and scaling initiatives for high-growth environments
- Strong proficiency in Python
- Deep expertise in cloud platforms and container orchestration tools such as AWS ECS and EKS
- Solid experience in CI/CD pipeline design and optimization using tools like GitHub Actions and Buildkite
- Proficiency in infrastructure-as-code tools such as Terraform
- Strong knowledge of monitoring, observability, and performance optimization practices
- Upper-Intermediate level of spoken and written English