We are seeking a senior DevOps Engineer to support our card processing infrastructure that handles high-volume payment transactions across multiple markets.
This role offers deep exposure to production-grade payment rails architecture and the operational challenges of maintaining 99.99% uptime for critical financial infrastructure. Responsibilities: * Maintain and enhance AWS infrastructure supporting daily card processing * Implement infrastructure as code using Terraform with proper state management and CI/CD integration * Manage HashiCorp Vault clusters for secrets management across environments (Development/Staging/Production) * Operate Nomad clusters for container orchestration with proper resource allocation and scheduling * Ensure cross-AZ resilience and disaster recovery capabilities * Implement and maintain PCI DSS Level 1 compliance across all environments * Manage network segmentation, encryption at rest/in transit, and access controls * Support security audits and vulnerability assessments * Maintain audit trails and compliance reporting automation * Design and implement zero-downtime deployment strategies for payment processing services * Build and maintain comprehensive monitoring and alerting for transaction processing pipelines * Participate in incident response and post-mortem processes * Optimize system performance and capacity planning for transaction volume growth * Maintain GitLab CI/CD pipelines with comprehensive testing stages * Implement automated security scanning and compliance checks * Support Development Teams with environment provisioning and troubleshooting * Manage artifact repositories and perform dependency management
Requirements: * 5+ years of DevOps/SRE experience with production systems at scale * Strong proficiency in AWS services (EC2, RDS, ELB, VPC, IAM, KMS, CloudWatch) * Production experience with HashiCorp stack (Terraform, Vault, Consul, Nomad) * Understanding of Java ecosystem for application deployment and troubleshooting * Skills in Linux systems administration and containerization (Docker, container registries) * Knowledge of Infrastructure as Code practices with version control and testing * Experience with monitoring and observability tools implementation and maintenance * English level — Upper-Intermediate or higher
Will be a plus: * PCI DSS implementation experience and compliance knowledge * ISO 8583 messaging understanding and transaction flow knowledge * Experience in financial services or payment processing industry * Kafka administration and message streaming architecture experience * Expertise in database administration (PostgreSQL, Redis) in high-availability configurations * Network security and firewall management skills * Incident management and on-call experience
We offer: * Remote-first work model with flexible working hours (we provide all equipment) * Comfortable and fully equipped offices in Lviv and Rzeszów * Competitive compensation with regular performance reviews * 18 paid vacation days per year + all state holidays * 12 days of paid sick leave per year without a medical certificate + extra paid leave for blood donation * Medical insurance with an affordable family coverage option * Mental health program which includes free and confidential consultations with a psychologist * English, German, and Polish language courses * Corporate subscription to learning platforms, regular meetups and webinars * Friendly team that values accountability, innovation, teamwork, and customer satisfaction * Inclusive environment where everyone feels valued and treated equally. We proudly partner with VeteranHub to support Ukrainian veterans * We are committed to supporting Ukraine and actively participate in charity initiatives
