Harry Waye
CTO & Co-Founder at Stealth AI Startup
London, England, United Kingdom
Summary
🤩
Rockstar🎓
Top SchoolHarry Waye is a seasoned technology leader and founder with 11 years of hands-on engineering and executive experience, currently serving as CTO and Co-Founder of a stealth AI startup in London. He previously led architecture and product engineering at Arachnys as Co-Founder/Chief Architect, scaled teams as CTO at ScaleXP, and contributed backend improvements at analytics leader PostHog. Harry blends deep mathematical training from the University of Cambridge with practical expertise in backend systems, databases and performance tuning—examples include making PostHog’s PostgreSQL search case-insensitive and hardening retention queries against unexpected ClickHouse results. He is comfortable switching between strategic technical leadership and code-level problem solving, with a track record of shipping robust data-driven features and improving platform reliability. Known for pragmatic refactors and measurable performance wins, he brings both startup grit and rigorous analytic thinking to AI product development.
11 years of coding experience
14 years of employment as a software developer
MMath Mathematics, MMath Mathematics at University of Cambridge
Stackoverflow
1reputation
0reached
1answer
0questions
Github Skills (15)
postgresql10
back-end-development10
python10
clickhouse10
performance-optimization9
kafka8
data-modeling8
testing8
data-engineering7
team-management7
caching6
php6
amazon-web-services6
amazon-s36
aws-sdk6
Programming languages (11)
Github contributions (5)
PostHog/posthog
Sep 2021 - Jan 2023
🦔 PostHog provides open-source web & product analytics, session recording, feature flagging and A/B testing that you can self-host. Get started - free.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1353 reviews, 677 commits, 868 PRs in 1 year 4 months
Contributions summary:Harry primarily contributed to the backend functionality of the PostHog platform, with a focus on improving event search capabilities and optimizing database interactions. They were involved in making the search functionality case-insensitive for PostgreSQL and refactoring test definitions. Additionally, they addressed performance issues within the retention endpoint by making it more robust to unexpected ClickHouse query results. Furthermore, they added person merges table as well as implementing improvements of the team setting of the platform.
pythonabtestingdata-warehouseself-hostjavascript
hazzadous/cocktail-suggester
May 2017 - May 2023
Contributions:17 PRs, 31 pushes, 10 branches in 6 years 1 month
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