Cian Brennan

Overview

Based in Bristol. I work on growth engineering at Lakemont Networks. Reduced cloud spend on growth by 32% in two quarters. Most at home with experimentation and PostgreSQL. Swimming before work keeps me sane.

Prefers short, specific messages

Experience

1. Principal Engineer

   Sep 2023 - Present
   Lakemont Networks · 3 yr 1 mo · Contract · Bristol, UK
   • Backed 32 founders at pre-seed and seed.
   • Previously an operator for 8 years before investing.
2. Full-Stack Engineer

   Jun 2021 - Sep 2023
   Amazon · 2 yr 3 mo · Full-time · Bristol, UK
   • Wrote the PostgreSQL service that now handles 47 million requests a day.
3. Engineering Manager

   Dec 2019 - Jun 2021
   Monzo · 1 yr 6 mo · Full-time · Bristol, UK
   • Cut p99 latency on the growth services from 647ms to 41ms.
4. Full-Stack Engineer

   Sep 2016 - Dec 2019
   Sky · 3 yr 3 mo · Full-time · Bristol, UK
   • Shipped a rewrite that took build times from 34 minutes to under 6.
5. Senior Full-Stack Engineer

   Jul 2013 - Sep 2016
   Arm · 3 yr 2 mo · Full-time · Bristol, UK
   • Reduced cloud spend on growth by 31% in two quarters.
   • Grew the growth team from 6 to 25 engineers.

No references yet.

Education

1. University of Glasgow

   MA, Electronics and Communication
   2011 - 2013
2. University of Cambridge

   BA, Electronics and Communication
   2006 - 2009