Senior Site Reliability Engineer (SRE / Backend) f/m/d

About the Role

We're looking for a Senior Site Reliability Engineer to take ownership of the infrastructure behind our platform. We run web applications and two mobile apps entirely on AWS, built around serverless and event-driven services and managed with Terraform.

This is a hands-on role with real ownership — you'll set the standards for how we run production rather than inherit someone else's. The split is roughly 70% infrastructure and reliability work, 30% backend development. Most of your time goes to the platform, but you'll be comfortable dropping into the application code to debug a slow query, fix a Lambda, or ship an endpoint alongside the product team.

Because we handle sensitive mental health data, reliability and security aren't abstract goals here. When someone books a session in a difficult moment, our platform needs to work.

🚀 What you'll do

Own our AWS infrastructure end to end — Lambda, ECS Fargate, SQS, SNS, EventBridge, SES, Cognito, DynamoDB, RDS Postgres, and DMS
Manage everything as code in Terraform, with well-designed modules, clean state management, and a solid review workflow
Build and maintain CI/CD pipelines with safe rollout and rollback across web, mobile backends, and infrastructure
Design our event-driven services for resilience: retries, dead-letter queues, idempotency, graceful degradation
Own our Datadog and Sentry setup — define SLOs, build dashboards, and keep alerting actionable instead of noisy
Lead incident response and run blameless postmortems that actually change how we build
Harden our security posture: IAM, secrets management, network boundaries, Cognito auth flows, and vulnerability remediation
Protect sensitive health data and support our GDPR and compliance requirements
Monitor and optimize AWS spend without compromising reliability
Contribute to backend development — APIs, event consumers, data pipelines, and Postgres and DynamoDB performance