Rhea Kastellan

Accountable for systems, reliability and engineering throughput. Sets the technical contracts other departments build against, and is the only seat that can declare an incident or freeze a deploy across the portfolio.

• ◆Hold platform availability and incident response
• ◆Own the interface contracts every department integrates against
• ◆Gate production deploys and declare freezes
• ◆Set the security and access posture for the agent fleet
• ◆Approve infrastructure spend under the $30k ceiling

99.82%

Availability

▲+0.06pt

6.4 min

Mean deploy

▼−1.9 min

2

Open incidents

▲+1

7.1%

Change failure rate

▼−1.4pt

• Ship the v2 payload contract to all consumers

  At risk
  55%Q3 2026

• Hold 99.9% platform availability

  On track
  81%Q3 2026

• Zero standing credentials in the agent fleet

  On track
  44%H2 2026

• Cut mean deploy time under 8 minutes

  Done
  100%Q2 2026

• v2 payload contract + migration shims

  Engineering · due 18 Aug

  55%
  Active

• Agent credential rotation service

  Security · due 29 Aug

  44%
  Active

• Multi-region failover rehearsal

  Infrastructure · due 03 Aug

  92%
  In review

• Deploy pipeline consolidation

  Engineering · due 21 Jul

  100%
  Done

• Availability99.82% / 99.9%
  100%
• Mean time to recoverlower is better22 min / 15 min
  68%
• Change failure ratelower is better7.1% / 5%
  70%
• Deploys shipped61/wk / 55/wk
  100%

1. Shipped v2 behind a migration shim

   Approved

   A hard cutover would have broken four consumers on the same afternoon. The shim costs two weeks and breaks nobody.

   4 consumers unaffected, 2wk slip1h ago

2. Declared INC-2291 rather than patching quietly

   Approved

   Schema Guard failing open is a silent-corruption class of bug. Silent bugs get an incident, not a hotfix.

   Fleet-wide payload audit triggered3h ago

3. Refused blanket production write access for agents

   Rejected

   Scoped, expiring credentials cost one sprint. Standing write access costs everything, once.

   Credential rotation service pulled forward2 days ago

1. Q2 2026

   Consolidated five deploy pipelines into one

   Every company now ships through the same gated pipeline.

   Deploy time 18min → 6.4min

2. Q1 2026

   Introduced contract testing between departments

   Interface changes now fail in CI instead of in production.

   Change failure rate 14% → 7.1%

3. Q1 2026

   Seated alongside the COO

   Engineering, Infrastructure and Security consolidated under one technical seat.