Middle DevOps Engineer

We're looking for a DevOps Engineer to join our team and work embedded with one of our key clients — a fast-growing AdTech SaaS company operating at scale on AWS. You'll be part of a small, high-ownership DevOps team working closely with the client's backend, data, and product engineers on a daily basis. This is a hands-on role. You'll handle everything from routine infrastructure maintenance to complex migrations, security hardening, and cost optimization — and you'll be expected to communicate clearly with both technical and non-technical stakeholders. What you'll work on: • Managing and evolving cloud infrastructure on AWS (EKS, RDS, ElastiCache, S3, OpenSearch, Cognito, SES, and more) • Maintaining and improving CI/CD pipelines built on GitHub Actions and ArgoCD • Writing and maintaining infrastructure-as-code with Terraform (including Terraform Cloud) • Supporting Kubernetes clusters (EKS) with Karpenter autoscaling and Bottlerocket OS • Participating in security initiatives — MFA enforcement, WAF configuration, GitHub branch protection, GPG commit signing, ISO 27001 compliance • Monitoring and alerting via Datadog and responding to incidents • Managing AWS Bedrock integrations and supporting AI-powered services • Supporting developer teams with access management, environment provisioning, and day-to-day requests Contributing to cost optimization efforts and monthly AWS cost reporting What we’re looking for Required: • Experience with ArgoCD or other GitOps tools • Solid understanding of AWS core services (EC2, S3, RDS, IAM, VPC, EKS) • Hands-on experience with Terraform • Familiarity with Kubernetes and Helm • Experience with CI/CD pipelines (GitHub Actions or similar) • Comfortable working in Linux environments and with CLI tooling • Strong written communication in English — you'll be interacting with client stakeholders daily • Ability to work independently, ask the right questions, and take ownership Nice to have: • Familiarity with Datadog or similar observability platforms • Knowledge of AWS security services (WAF, GuardDuty, Security Hub) • Experience with ElastiCache, OpenSearch, or Databricks • Exposure to ISO 27001 or SOC 2 compliance processes • Familiarity with AWS Bedrock or AI/ML infrastructure What to expect • You'll be embedded in a real product team, not bouncing between projects every few weeks • Small team, high ownership — your work matters and is visible • Direct communication with client engineers and stakeholders • Fully remote, async-friendly, with regular syncs • You'll be expected to grow into the role — we invest in people who take initiative What weoffer: • Paid vacation— 16days per year; • Documented (16days) and undocumented (5days) sick leave; • Leave for significant life events; • Compensation for medical insurance (for our employees based inUA); • Flexible working hours (start at8.00-11.00o’clock); • Weekends according tothe Ukrainian/Local calendar; • Engaging projects with opportunities for career growth; • Certifications, Udemy courses; • Corporate events, team-building activities, • Gifts and recognition from the company; • A friendly, open, and supportive team culture without excessive bureaucracy.