Senior Cloud Engineer

Who we are

SII Group is a trusted technology partner, SII provides high value added solutions for the IT projects of many large corporations. Since its founding in 1979, the Company has been providing solutions adapted to its clients’ needs, by relying on :

> Its acknowledged expertise in various industries and sectors

> Proven 'turnkey' solutions

> An efficient quality system

> Adaptable, evolving services

Today, with a staff of more than 18'000, SII Group is supporting companies across 20 countries.

At SII Switzerland we pay attention to the personal and professional wellbeing of our employees. We place our collaborators at the heart of our actions and activities. If you are motivated by the perspective of joining a big, trusted and recognized group, then let's meet !

To develop our consulting offer and support one of our clients, we are looking for a talented Senior Cloud Engineer.

Missions

• Design and manage AWS cloud infrastructure with a focus on reliability, security, and performance.
• Write and maintain infrastructure as code using Terraform, ensuring environments are reproducible, version-controlled, and well-documented.
• Own and improve GitLab CI/CD pipelines, working closely with development teams to streamline build, test, and deployment workflows.
• Drive cloud cost optimization initiatives and establish best practices across the organization.
• Mentor junior engineers and contribute to architectural decisions.
• Proactively identify and resolve infrastructure bottlenecks and security gaps.

Profile

• 5+ years of experience in cloud engineering or a related infrastructure role.
• Deep hands-on expertise in AWS – including EC2, ECS/EKS, RDS, S3, IAM, VPC, CloudWatch, and Lambda.
• Proficiency in Terraform, including module design, state management, and environment promotion.
• Solid experience building and maintaining CI/CD pipelines with GitLab.
• Strong scripting skills in Bash or Python.
• Familiarity with containerization using Docker and Kubernetes.
• Strong communication skills with the ability to work autonomously and take ownership of complex problems.
• Ability to work on shift.
• Experience with AWS security tooling: GuardDuty, Security Hub, AWS Config.
• Knowledge of observability stacks such as Prometheus, Grafana, or Datadog.
• AWS Solutions Architect or HashiCorp Terraform Associate certification.
• Experience with multi-account AWS Organizations setups.
• Knowledge of Azure

For information

• Start date : 01/09/2026
• Location : Lausanne - CH
• Duration : permanent contract
• Language : fluent in English, German or French are a plus