Descripción de la oferta
Location :Remote (Europe) / Relocation to Barcelona (Hybrid)Project :Fin Tech Holding (Payment Processing)Salary : from €8,000Smart Core 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.Our core area is card acquiring, ensuring high‑speed and secure payment processing. Over the past five years, we have built a reliable infrastructure across the EU and CIS, launched our own payment solutions, and continue to grow actively.We are looking for a Principal Dev Ops Engineer to lead the infrastructure direction in our payment processing holding. This is a role for an expert who wants to combine architectural design, leadership of a small team (1‑2 engineers), and hands‑on engineering (“playing coach”).You will develop infrastructure where downtime is costly and data security is priority #1. We maintain a high engineering culture and need a leader to guarantee its stability, security compliance and evolution.Technical Landscape
Cloud :AWS (Deep dive : Multi‑account environment, AWS Organizations, VPC, TGW, Security Groups, IAM Roles).Orchestration :Kubernetes (EKS) & Amazon ECS.IaaC :Terraform (strict State management, modularity, Terragrunt).CI / CD :Git Ops (Argo CD), Git Hub Actions.Observability :Cloud Watch, Prometheus Agent, Grafana, ELK / Loki.Scaling :Karpenter, HPA (Horizontal Pod Autoscaler).Security :AWS WAF, Secrets Manager, External Secrets.Your Responsibilities
1. Strategy & Architecture
Design fault‑tolerant (Multi‑AZ) architecture for payment processing.Centralized management of the multi‑account AWS landscape (Governance, Control Tower).Technical leadership of the Dev Ops team (1‑2 people): mentorship, Code Review, process building.Interaction with CTO and development: implementing SRE practices, defining SLI / SLO.2. Engineering & Automation (Hands‑on)
Writing and maintaining Terraform code (“Infra as Code” is our standard).Fine‑tuning autoscaling for EKS and ECS (Karpenter + Spot Instances where applicable) to balance cost and reliability.Managing pipelines via Git Hub Actions and releases via Argo CD.3. Security & Reliability (Sec Ops)
PCI DSS Compliance :Ensuring the infrastructure meets strict security standards and passing audits.Ensuring network isolation and security governance across all accounts.Building high‑quality monitoring and alerting for the entire infrastructure stack (Victoria Metrics) to ensure complete observability and rapid incident response.Organizing and testing Disaster Recovery (RPO / RTO).Expectations
Experience :8+ years in Dev Ops / SRE, with proven experience in leadership or mentorship roles.PCI DSS :Mandatory deep knowledge of PCI DSS requirements and experience building compliant infrastructures.AWS :Solution Architect level. Experience managing multi‑account environments and landing zones.Orchestration :Expertise in both EKS and ECS.Terraform :Writing maintainable code, experience with complex modules.English :B2+ (confident communication with international partners).Mindset :You understand that in FinTech, there are no minor details. You consider Cost (Fin Ops) and Security (Sec Ops) at the design stage.Compensation
Compensation : From €8,000 (negotiable based on level).Location :Comfortable remote work in a European time zone or relocation assistance to Barcelona.Impact :Direct access to technical decision‑making, no bureaucracy, adequate management.Culture :We invest in engineering quality (modern tools, documentation, clear processes).If you are ready to build a reliable foundation for a financial product and lead a team — feel free to apply directly via Linked In or by sending your CV to stanislav.pavlov[@]smartcore.pro#J-18808-Ljbffr
