Senior DevOps Engineer (AWS+Ruby)

Nasze wymagania: 7+ years of DevOps / SRE experience Strong expertise in Kubernetes (EKS preferred) Strong hands-on experience with AWS (EC2, EKS, RDS, S3, IAM, VPC) Solid programming skills in Ruby Experience with Docker and containerized environments Experience with CI/CD and Infrastructure as Code (Terraform, CloudFormation, etc.) Experience with messaging systems (RabbitMQ, Kafka, SQS) Strong knowledge of relational databases (MySQL/PostgreSQL) Experience with distributed systems and microservices Familiarity with observability tools (Prometheus, Grafana, ELK, Datadog) Strong Linux and networking fundamentals Experience with SRE practices (SLO/SLI/SLA, incident management) Strong communication skills and ownership mindset Mile widziane: Experience with Ruby on Rails or Java/Spring Boot Experience with high-traffic SaaS platforms Cloud cost optimization experience Chaos engineering practices Mentoring experience O projekcie: You will join a team building a large-scale mobility platform enabling taxi services, payments and real-time ride management. The system integrates multiple distributed components including ride processing, payment infrastructure (PCI DSS compliant), mobile apps and third-party services such as payment gateways and communication tools. Zakres obowiązków: Design, build and operate scalable, highly available distributed systems Improve system performance, reliability and resilience Automate infrastructure, CI/CD pipelines and operational workflows Troubleshoot and resolve production issues Lead system upgrades and migrations with minimal downtime Participate in on-call rotations and incident response Collaborate closely with development teams to improve system operability Implement monitoring, alerting and capacity planning best practices Drive automation to reduce operational overhead Contribute to incident management, post-mortems and disaster recovery strategies