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We are looking for a Senior DevOps Engineer to join our team! You will own and evolve Mailtrap's production infrastructure — a multi-region AWS platform powering high-volume email sending and testing. You will keep it reliable, secure, and cost-efficient day to day. You will also lead a key strategic initiative: planning and executing a partial migration of selected workloads from AWS to rented bare-metal / colocation infrastructure to cut costs — a hybrid-by-design effort, not a full cloud exit. You will decide what moves and what stays, design the target platform (likely Kubernetes or a similar orchestrator on bare metal), and own the migration end to end, from business case to cutover. Our engineering team thrives in an agile, continuously improving, and automation-oriented environment. We value ongoing evolution, objective evaluation of our processes, and taking action to make things better. Must have skills • 5+ years DevOps/platform (senior), production ownership • Deep AWS (VPC, ECS, IAM, RDS/ElastiCache or equivalents, networking) • Terraform at scale (modules, remote state / Terraform Cloud) • CI/CD with GitHub Actions, including automated deploys to production (e.g. blue/green deployments) • Containers (Docker); comfortable operating services on ECS or K8s • Strong Linux networking (DNS, TLS, load balancing, firewalls, VPN/hybrid) • Proven experience planning and executing migration to on-prem, colo, or private cloud (partial/hybrid OK — full exit not required) • Comfortable owning a multi-quarter infra initiative: TCO, design, vendors, cutover, rollback • Comfortable automating operational tasks with shell and/or Python • Fluent English (both spoken and written) Strongly preferred • Colo/bare-metal ops: IPAM (NetBox), Ansible, image-based provisioning (Packer or equivalent), HAProxy/Nginx • Replacing managed AWS services with self-hosted (Postgres HA, Redis/Valkey, Kafka, OpenSearch) • Email infrastructure (MTA, SMTP, IP reputation, DKIM/SPF/DMARC) — Halon or similar • Cloudflare (DNS/WAF/Access) • Observability beyond CloudWatch (Prometheus/Grafana/Loki or equivalent) • Prior work with multi-region SaaS or EU data residency • Cost-driven architecture / FinOps mindset Would be a plus • GCP (BigQuery/certificates) • Comfortable reading Ruby or Go (used in our services and tooling) • AWS Certificates Responsibilities day-to-day • Operate and evolve AWS multi-account / multi-region infra • Terraform modules/workspaces • Ensure safe infrastructure changes across network, storage, and services, with zero-downtime deployments. • ECS services, blue/green deploys, Docker image pipelines • Reliability: CloudWatch/PagerDuty/Sentry, capacity, cost tags • Security baseline: IAM, secrets (SSM), Cloudflare edge rules • Partner with engineers on release automation and production readiness • Maintain the hybrid estate (AWS and rented bare metal) as one operable platform Migration leadership • Build the business and technical case for what moves off AWS vs what stays • Design the rented bare-metal / colo landing zone (compute, network, storage, observability, secrets) • Produce migration waves, dependency maps, cutover/rollback plans • Stand up hybrid connectivity and dual-run periods; shift traffic safely (e.g. via Cloudflare) • Replace or re-home managed services where it pays off (compute, queues, search, cache, MTA nodes) • Coordinate colo/vendors, timelines, and eng teams; report progress and risk