Senior DevOps Engineer

About the company

Kiefer Tech, the technology arm of Kiefer, leverages over 12 years of engineering heritage from the Green Energy sector to deliver cutting-edge AI, robotics, and enterprise solutions across Greece and the EU. We build sovereign AI infrastructure that keeps data within EU borders, respect privacy, and delivers tangible business impact. Guided by our core values: innovation, quality, and long-term client partnerships, we create enterprise-grade AI infrastructure, the first true Greek Large Language Models, and intelligent automation solutions that empower organizations to thrive. Our strategic collaboration with NVIDIA combines sustainable infrastructure expertise with world-class AI technology, creating an ecosystem that fosters innovation, strengthens Greece’s technological sovereignty, and generates real impact across industries. Join us and help build the AI-powered world of tomorrow.

About the role

Senior DevOps Engineer joining a growing infrastructure team at Kiefer Tech. You will help standardize deployment pipelines, build observability from the ground up, and extend infrastructure-as-code across all services. The foundations exist; your job is to make them consistent, reliable, and scalable for enterprise production.

Important: this is an office-based role. We are currently considering candidates who are already based in Athens and able to work from our office.

Our stack: 10+ Python (FastAPI) and TypeScript microservices on AWS (EKS, App Runner, ECR), with PostgreSQL, Redis, OpenSearch, Kafka, and S3.

What you will do

• Standardize CI/CD pipelines (GitHub Actions) and Helm charts across 10+ microservices
• Build centralized logging, metrics, and alerting
• Extend Terraform to cover full AWS infrastructure
• Improve deployment reliability: staging environments, rollback strategies, health checks
• Harden security: container scanning, secrets management, network policies
• Improve the local development experience (Docker Compose orchestration for all services)

What you will need

• 5+ years of professional DevOps / infrastructure engineering experience
• Strong expertise in Kubernetes (EKS preferred) and Helm
• Production experience with Terraform or equivalent IaC (CloudFormation, Pulumi)
• Deep experience with AWS (ECR, EKS, App Runner, S3, CloudFront, IAM)
• Proficiency designing and maintaining CI/CD pipelines (GitHub Actions preferred)
• Track record building observability (logging, metrics, tracing) for distributed systems

Nice to have

• GitOps (ArgoCD, Flux)
• MLOps infrastructure (model serving, GPU workloads)
• Kafka operational management
• Cost optimization for cloud infrastructure
• Python/Bash scripting for automation

What is there for you

• Compensation: upper-quartile for Greek/EU market
• Hybrid setup: flexible hybrid work from our Athens office
• AI-native: real infra challenges with LLMs, GPU workloads, and event-driven pipelines
• Growth: budget for conferences/courses/certifications, path to infrastructure lead
• Culture: engineering-first, low meetings, high autonomy, async-first