Senior DevOps Engineer

About Sirma: 

Established in 1992, Sirma is one of the leading IT companies in Bulgaria. Since 2015, the company has been listed on the Bulgarian Stock Exchange.

Sirma specializes in software development across multiple industries, including finance, insurance, healthcare, transportation, logistics, hospitality, retail, and e-government. With a team of more than 700 professionals, the company delivers cutting-edge software solutions tailored to address the specific business needs and challenges of our clients. Our projects range from short engagements to multi-year collaborations on turnkey products. As we believe that our employees are our greatest asset, we provide them with a collaborative environment and full support for their career and personal growth.

About the role:

We are looking for an experienced Senior DevOps Engineer to lead the DevOps team responsible for designing and operating the Sirma AI Platform — our enterprise-grade AI orchestration system for building and deploying AI agents, teams, and workflows.

You will own the full distribution architecture: multi-cloud (AWS EKS, Azure AKS) and on-premise Kubernetes deployments, Harbor container registry operations, GitLab CI/CD pipelines, and self-hosted infrastructure — enabling enterprise clients in Finance, Healthcare, Insurance, and other regulated industries to run the platform on their own infrastructure with full data sovereignty.

Your responsibilities:      

• Team Leadership Lead and mentor the DevOps team, own infrastructure architecture decisions, and coordinate with R&D on release cadence and reliability.
• CI/CD & Release Engineering Design and maintain GitLab CI/CD pipelines, operate the Harbor container registry, and manage the full release pipeline including image promotion and vulnerability scanning.
• Kubernetes & Deployment Manage multi-flavor Kubernetes deployments (EKS, AKS, on-premise, K3s), own Helm charts, support ArgoCD GitOps workflows, and design air-gapped deployment bundles for regulated environments.
• Infrastructure & Data Manage PostgreSQL, Weaviate, MinIO, Flyway migration pipelines, and HashiCorp Vault across production and customer environments.
• Cloud & Security Manage Azure and AWS environments, apply ISO 27001 / SOC 2 compliance practices, and define DR strategies.
• Monitoring & Observability Build and maintain the Grafana / Prometheus / Alert Manager stack across multi-cloud and on-premise deployments.

Role’s requirements:                         

• K8s: Kubernetes (EKS, AKS, on-premise K8s) — production-level experience
• GitLab: GitLab CI/CD — pipeline authoring, GitLab Runner management, self-hosted GitLab
• Helm: Helm — chart authoring, OCI registry, multi-environment values
• ArgoCD: GitOps — ArgoCD, GitOps methodology and workflows
• IaC: IaC — Terraform / Terraform Cloud, Ansible
• Scripting: Scripting — advanced Bash and/or Python
• Containers: Containers — Docker, Harbor or equivalent registry operations
• Databases: Databases — PostgreSQL management in production environments
• Azure Cert: AZ-104 certification or higher

Advantages:

• K3s for lightweight / on-premise deployments
• Harbor self-hosted registry (vulnerability scanning, content trust, image replication)
• Trivy or equivalent container image security scanning
• Flyway database migrations management
• Weaviate vector database and MinIO / S3-compatible object storage
• Air-gapped / offline deployment experience
• AWS EKS management (IAM, networking, cost optimization)
• Multi-cloud infrastructure design
• HashiCorp Vault for secrets management
• Monitoring stack: Grafana, Prometheus, Promtail, Alert Manager, Datadog
• Security & compliance: ISO 27001 / SOC 2 audit experience
• DR planning and execution
• AZ-305 / CKA certifications
• Cloudflare WAF and security features
• Istio service mesh (Virtual Services, Authorization Policies, Envoy Filters)
• Team leadership and mentoring experience

What we offer

• Personal career path
• Individual or team professional training
• Flexible working time
• Cooperation with top professionals around the globe
• Regular performance assessment
• Additional health and dental insurance
• Additional paid vacation days for students
• Regular team buildings and office parties
• Private parking zone
• Multisport card
• Game and relax zone

Why Sirma should be your choice

• Knowledge sharing
• Interesting case studies
• Referral bonus scheme
• Working with cutting-edge technologies
• Innovative and dynamic projects
• Sport events
• Charity campaigns
• Fruits at the office
• Opportunity to work from any Sirma office
• Large terrace with great view

Apply now!
We are waiting for your CV!
There’s a lot going on at Sirma!
We’re looking forward to meeting our next colleague. 🙂

We will contact only the candidates selected for further consideration. Confidentiality is guaranteed. We thank all candidates for applying.