Senior DevOps Engineer (Security and Reliability)

About this role

Senior DevOps Engineer (Security and Reliability) Physitrack PLC · Fully remote, based in Poland Contract: B2B contractor, EUR 8,000 per month About us Physitrack PLC builds digital health software used by clinicians, physiotherapists and employers in over 100 countries. Our two product lines, Physitrack (exercise prescription, telehealth and patient engagement) and Champion Health (workplace wellbeing), run on a multi-region AWS platform serving Europe, the UK, North America, Australia and the Middle East.

We are ISO 27001:2022 certified. We hold clinical data and a large proprietary content library, and both need defending properly. The role You will own the security and reliability surface of our infrastructure: the edge, the data layer, and the observability stack that tells us when either is misbehaving. It sits where security engineering meets SRE. You will design controls at the edge, harden our cloud posture, make sure we can see what is happening across a multi-region estate, then evidence all of it to auditors and enterprise customers.

This is hands-on engineering, not a governance role. We are recruiting two senior infrastructure roles. This one covers the edge, observability and cloud security posture. The other, Senior DevOps Engineer (Platform), covers the Kubernetes estate, delivery pipelines and migrations. Apply for whichever fits, and tell us if both do. What you will do Edge and network security Own our Envoy based edge, along with WAF rules, rate limiting and bot management across our cloud and CDN layers Design and tune protections against abuse, including content scraping, credential attacks and traffic anomalies Build detection for the traffic patterns that matter, and keep improving its signal to noise ratio Cloud security posture Harden our AWS estate: IAM boundaries, least privilege access, threat detection and runtime monitoring on EKS Manage secrets, certificates and token lifecycle across the platform Produce the infrastructure evidence behind ISO 27001 audits, penetration tests and enterprise security reviews Data platform Run PostgreSQL and RDS in production across regions, covering upgrades, performance, encryption and access control Own our search infrastructure, Typesense and vector search, end to end Work with MongoDB and Elasticache alongside the primary data stores Observability Own the monitoring platform: Grafana, Loki and Prometheus, plus Sentry and PagerDuty Build alerting people actually trust, with meaningful thresholds, low noise and clear runbooks Improve how logs and metrics flow from the edge and the application into the stack What we are looking for Essential 5+ years in infrastructure, SRE or security engineering, with strong AWS depth Real experience with edge, WAF or reverse proxy technology: Envoy, nginx, Cloudflare, ModSecurity, Coraza or equivalent Production Kubernetes, ideally EKS, and strong Terraform Operating PostgreSQL at scale.