About
SmartCore is a fintech holding building infrastructure for the next generation of payments. Our solutions cover the entire financial operations cycle — from core banking and processing to cards, wallets, and anti-fraud systems.
Responsibilities
•Supporting infrastructure in AWS: network, compute, databases, queues, and secrets.
•Adding new services, environments, and components to Kubernetes and ECS.
•Keeping IaC (Terraform / Terragrunt) and GitOps (ArgoCD) up to date.
•Setting up and troubleshooting CI/CD: image building, deployments, and pipelines.
•Monitoring logs and alerts (Grafana, Prometheus, CloudWatch).
•Investigating incidents (on-call) and assisting the development team with deployments and environments.
•Managing Cloudflare: DNS, CDN, WAF, and certificates.
•Maintaining ClickHouse and the rest of the data layer (PostgreSQL, Redis, Kafka, MongoDB).
•Ensuring security compliance: accesses, secrets, network, and PCI / ISO requirements.
Requirements
•AWS: 4+ years of production experience (VPC, IAM, EKS, ECS, RDS, load balancing, secrets).
•Kubernetes: Practical experience with EKS, deployments, debugging, Ingress, IRSA.
•Infrastructure & CI/CD: Strong skills in Terraform (modules, state), Terragrunt, Helm + GitOps (ArgoCD), Docker, and CI/CD tools (GitHub Actions / CodeBuild).
•Tech Stack: Experience with ECS Fargate, Kafka / MSK, ClickHouse, Cloudflare (DNS, CDN, WAF), Grafana + Prometheus / AMP, CloudWatch, External Secrets, and Karpenter.
•Domain & Operations: FinTech or PCI experience is required. Must be ready for on-call duties and production debugging (e.g., pod not starting, no traffic, missing metrics).
•Languages: Russian and English (sufficient for documentation and AWS).
Conditions
•Impact: Opportunity to join at the origins of the project with a lot of new design and development. Direct access to technical decision-making and no bureaucracy.
•Environment: Agile processes based on Scrum without unnecessary bureaucracy.
•Location: Full-time, flexible schedule, comfortable remote work in a European time zone, or relocation assistance to Barcelona, Spain.
•Culture: We invest in engineering quality (modern tools, documentation, clear processes) and provide experience working in a large holding with its own infrastructure.
