Senior DevOps Engineer

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

• 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)

• 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:

• 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)

• Colo/bare-metal ops: IPAM (NetBox), Ansible, image-based provisioning (Packer or equivalent), HAProxy/Nginx

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

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