Senior DevOps Engineer (FinTech/PSP) - Remote Friendly (EMEA)

About the role

SmartCore is a fintech holding building infrastructure for the next generation of payments, covering core banking, cards, wallets and anti-fraud systems, with a focus on card acquiring. It is looking for a strong middle / senior DevOps Engineer to support and develop its cloud infrastructure across stage and production environments, with a focus on existing services, new environments, automation, monitoring and security. The position is remote-friendly within Europe, with relocation assistance to Barcelona, Spain available.

Key responsibilities

• Support infrastructure in AWS: network, compute, databases, queues and secrets.
• Add new services, environments and components to Kubernetes and ECS.
• Keep infrastructure as code (Terraform / Terragrunt) and GitOps (ArgoCD) up to date.
• Set up and troubleshoot CI/CD: image building, deployments and pipelines.
• Monitor logs and alerts (Grafana, Prometheus, CloudWatch) and investigate incidents on call.
• Assist the development team with deployments and environments.
• Manage Cloudflare (DNS, CDN, WAF, certificates).
• Maintain the data layer (ClickHouse, PostgreSQL, Redis, Kafka, MongoDB).
• Ensure security compliance, including PCI / ISO requirements.

Required profile

• 4+ years of production AWS experience (VPC, IAM, EKS, ECS, RDS, load balancing, secrets).
• Practical Kubernetes experience (EKS, deployments, debugging, Ingress, IRSA).
• Strong Terraform (modules, state), Terragrunt, Helm and GitOps (ArgoCD), plus Docker and CI/CD tools.
• Experience with ECS Fargate, Kafka / MSK, ClickHouse, Cloudflare, Grafana + Prometheus, CloudWatch, External Secrets and Karpenter.
• FinTech or PCI experience; readiness for on-call duties and production debugging.
• Russian and English, sufficient for documentation and AWS.

What we offer

• A full-time, flexible schedule with comfortable remote work in a European time zone, or relocation assistance to Barcelona.
• Agile Scrum processes and direct access to technical decisions.
• An opportunity to join at the beginning of the project with modern tools and documentation.