What I built

PostHog · 2021–202517 projects

Experimentation platform

new product
Dec 2021 – Nov 2024
0.5s
time to compute results, down from 10s

/decide resilience and scale

reliability and scale
Jun 2021 – Jul 2024
100K
flag requests a minute, with zero downtime when Postgres went down

Person-on-events

migration
May 2022 – May 2023
400%
faster queries involving persons and events, at best

Local evaluation of flags

new system
Jul 2022 – Aug 2023
4×
fewer database queries for server-side flags

SDKs

major extension
May 2021 – Oct 2024
5
server SDKs with local flag evaluation

Surveys

major extension
Jul 2023 – Apr 2024
+40%
conversion for users trying surveys, after removing an opt-in step
Also shipped · 11
  • Plugins and integrationsMay 21–Oct 23
  • Docs, posts and RFCsMay 21–Jul 24
  • Funnels, paths and groupsJun 21–Nov 24
  • Correlation analysisOct 21–Apr 23
  • Cohorts and personsOct 21–Apr 24
  • Universal search and notebooksApr 22–Sep 23
  • Flag targeting and rolloutMay 22–Oct 24
  • CI speed-up and Rust monorepoJun 22–Jun 24
  • Capture and API hardeningJan 23–Apr 24
  • Early access featuresMay 23–May 23
  • Error tracking (early)Aug 24–Jan 25

Tano · 202624 projects

Affiliate platform build

new product
Apr 2026 – Sep 2026
$350K
attributed revenue, load-tested at 1,000 requests a second

Workflow orchestration engine

new system
Feb 2026 – Sep 2026
97K+
AI-run creator collaborations

Content monitoring in Go

major extension
Mar 2026 – Sep 2026
20M+
creator post checks

Negotiation engine

major extension
Feb 2026 – Aug 2026
$1M+
accepted creator-deal value

Collaborations to partners

migration
Aug 2026 – Sep 2026
13,345
partners moved in a single brand cutover
Also shipped · 19
  • Collaboration agent reliabilityFeb 26–Sep 26
  • Checklists to workflow orchestrationFeb 26–Jul 26
  • Developer tooling and CIFeb 26–Sep 26
  • Upload portal and content reviewFeb 26–Sep 26
  • Login, permissions and observabilityFeb 26–Sep 26
  • Partner cockpit and sourcingFeb 26–Sep 26
  • Customer dashboards and Mission ControlMar 26–Aug 26
  • Contracts and e-signatureMar 26–Jun 26
  • Creator paymentsMar 26–Sep 26
  • Model routing and evaluationMar 26–Sep 26
  • Support tickets and escalationMar 26–Sep 26
  • Content library and ad codesMar 26–Sep 26
  • Gift shippingApr 26–Sep 26
  • Migration off ReferzoneApr 26–Aug 26
  • Cost and P&L trackingMay 26–Sep 26
  • Automated multi-currency payoutsJul 26–Sep 26
  • Partners, segments and activationsJul 26–Sep 26
  • Partner agentJul 26–Sep 26
  • Creator identity consolidationAug 26–Aug 26