Ajax Systems, an international tech company and the largest manufacturer of security systems in Europe. Our infrastructure is a part of the product that is invisible to the end user, but critical to the life of the entire system. The safety of our users and their property depends on our uptime. We are constantly developing our cloud solutions and this requires automating our infrastructure, testing and improving its fault tolerance. For this purpose we are looking for Middle DevOps Engineer. The System Division develops the Ajax software ecosystem — including OS Malevich, the Video Management System, cloud infrastructure, and client applications. The team ensures the stable operation of all system components as a unified digital platform. WHAT YOU'LL WORK WITH: * Cloud: AWS at the Organization level — VPC, IAM, EC2, EKS, ElastiCache, Route53, Lambda, CloudFront, plus the security services (Config, GuardDuty, WAF, and friends) * Containers & orchestration: Kubernetes on AWS EKS, Helm * IaC: Terraform and Terragrunt * CI/CD: GitHub Actions (primary) and Jenkins * Languages: Golang, Node.js (TypeScript), Python, Groovy WHAT WE'RE LOOKING FOR: * 3+ years working as a DevOps engineer * Solid command of Linux-based systems and TCP/IP networking * Hands-on Infrastructure as Code with Terraform and Terragrunt * Comfortable writing code in at least one of: Golang, Node.js (TypeScript), Python, Groovy * Real AWS experience across the stack above — VPC, IAM, EC2, EKS, ElastiCache, Route53, Lambda, CloudFront, and AWS security services (Config, GuardDuty, WAF, etc.) * Building CI/CD pipelines with GitHub Actions and Jenkins * Hands-on operational experience with Kubernetes (AWS EKS) and Helm NICE TO HAVE: * Self-managed Elasticsearch stack * Message brokers: NATS, Kafka * Databases: MongoDB (Atlas), PostgreSQL, MySQL * Monitoring & alerting: Datadog, Grafana, VictoriaMetrics, VictoriaLogs WHAT YOU'LL ACTUALLY DO You'll be a proactive part of how the platform develops: * Support and develop our AWS Organization's core infrastructure * Improve the core infrastructure security posture * Build proactive monitoring * Put together cost-optimization plans and drive them ON-DUTY ROTATION (ROUGHLY ONCE EVERY ~1.5 MONTHS) * Granting access to various services * Taking part in incident investigation and response * Joining investigations on NON-PROD environments Heads-up on availability: This is a platform role, so availability matters. On rotation you'll occasionally need to help resolve the most critical production issues (on-call duties). WE OFFER: * The opportunity to suggest and implement your own ideas that directly influence the product and its mass production; * A place in a fast-growing company with a motivated and professional team; Competitive salary; * Medical insurance; * Corporate English classes; The opportunity to participate in Ajax’s internal beta-testing program for security systems; Discounts from partner companies; Discounts on Ajax products. Ajax Systems is a Ukrainian success story that has grown into a global product. Ajax devices are trusted by more than 4.5 million end users and 330,000 PRO users in over 180 countries. The company provides comprehensive solutions to protect residential and commercial properties of all sizes. Today, Ajax portfolio includes 280 devices for intrusion protection, video surveillance, fire safety, and comfort and automation.