SRE Together

Sina Moghaddas

Senior Platform Engineer at Mollie and founder of SRE Together. 12+ years building and operating infrastructure at scale — from bare-metal OpenStack and Ceph clusters to multi-region GCP active-active. I focus on the work that matters most when reliability is not optional: payment-critical systems, zero-downtime migrations, and platform engineering that lets product teams ship without fear.

What I've Built

  • Led two zero-downtime GCP region switchovers, each migrating the majority of production payment traffic
  • Designed and owned a public API gateway on Apache APISIX across two GCP regions — cut auth latency ~100ms per request
  • Drove switchover architecture from single-primary to active-active across two GCP regions and cut system RTO from 10 to 3 minutes by automating the full switchover process
  • Migrated a large-scale Elasticsearch cluster and critical services from bare metal to GCP/GKE with zero downtime
  • Deployed multiple OpenStack regions supporting tens of thousands of active VMs

How I Approach It

Reliability is a product decision as much as a technical one. I work at the intersection of engineering and business — translating uptime targets into clear priorities, and turning incidents into durable improvements rather than one-time fixes.

I believe in deep ownership: I write the runbooks, own the on-call, design the architecture, and execute the cutover. The goal is always a more capable system and a more capable team, not a dependency on the person who built it.

Open to select consulting and advisory engagements.