Senior Infrastructure Engineer

About the role

We are looking for an infrastructure engineer who can own our entire cloud stack. You’ll build and operate the systems that power billions of requests, improve observability across everything we run, and expand our infrastructure as we grow.

Key responsibilities

• Own and improve observability across the stack: metrics, logging, alerting, dashboards.
• Architect and operate browser‑cloud infrastructure, including containerised browsers, session isolation, crash recovery and autoscaling.
• Handle websocket connections, CDP tunnels and TCP‑level tuning for browser automation.
• Write and maintain Terraform for all infrastructure, treating everything as code.
• Tune autoscaling, perform capacity planning and optimise costs while expanding to new regions.
• Debug production issues such as memory leaks, zombie processes and network failures.
• Build disaster‑recovery and incident‑response runbooks.

Required profile

• Self‑starter who finds work that matters without waiting for instructions.
• Results‑driven, ships quickly and measures impact.
• Excellent written communication for docs, runbooks and post‑mortems.
• Strong work ethic and ability to thrive in a fast‑paced startup.
• Deep production experience with AWS services (ECS, EKS, Fargate, RDS, VPC, IAM).
• Fluent in Terraform and infrastructure‑as‑code practices.
• Comfortable with Linux, Docker and container orchestration.
• Experience running headless browsers or similar workloads at scale.

Required skills

• AWS (ECS, EKS, Fargate, RDS, VPC, IAM)
• Terraform
• Linux and Docker
• Kubernetes/EKS
• Headless browser frameworks (Playwright, Puppeteer, CDP)
• Networking (TCP, websockets, load balancing)
• Observability tools (Prometheus, Grafana, Datadog)
• PostgreSQL, Redis
• Ruby on Rails
• CI/CD pipelines and GitHub

What we offer

• Fully remote work from anywhere.
• Equity share and profit‑sharing.
• Opportunity to learn fast across the whole SaaS stack.
• Annual team retreats (latest in Spain).