Senior DevOps Engineer

2 dni temu

poznań, wielkopolskie, Polska Railsware Pełny etat
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. 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. What are we looking for? Must-have

skills:
5+ years DevOps/platform (senior), production ownership Experience of planning and implementing DevOps practices end-to-end Deep AWS (VPC, ECS, IAM, RDS/ElastiCache or equivalents, networking) Terraform at scale (modules, remote state) CI/CD with GitHub Actions, including automated deploys to production Containers (Docker); comfortable operating services on ECS or K8s Strong Linux networking (DNS, TLS, load balancing, firewalls, VPN) Comfortable owning a multi-quarter infra initiative: TCO, design, vendors, cutover, rollback Fluent English (both spoken and written) Strongly preferred: 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 Experience planning or/and executing migration to on-prem, colo, or private cloud (both partial or hybrid), including colo/bare-metal ops: IPAM (NetBox), Ansible, image-based provisioning (Packer or equivalent), HAProxy/Nginx Comfortable automating operational tasks with shell and/or Python Responsibilities Operate and evolve AWS multi-account / multi-region infrastructure FinOps Implementing IaaC using Terraform modules 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