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.

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