Jenny Brennan

Software engineer

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A Chrome extension to remove faces and names in LinkedIn profiles and searches, to reduce the effects of unconscious bias on recruiters.

London Tech Meetups

An open-source list of London tech meetups, categorised by languages, technologies, groups for beginners, and for underrepresented groups.

Code && Cake

A meetup that does what it says on the (biscuit) tin - work on your coding side projects alongside other friendly coders and baked goods.

Coding Teaching

I'm a lead instructor and long time supporter of Code First: Girls, and instructor with 23 Code Street. I have taught over 450 women and girls their first line of code.

Design & Illustration

I have lead redesign and branding processes for YC-backed non-profit 80,000 Hours, kids learn to code platform Code Kingdoms and a number of SMEs. I also love illustration - both digital and on paper.


I regularly speak at and moderate panels for conferences, tech events and workshops. Topics include software engineering, entrepreneurship, unconscious bias and effective charitable giving.

I am always interested in speaking opportunities - feel free to get in touch.

About Jenny

Photo of Jenny Brennan

I'm a software engineer based in London, where I work at Twitter, writing mostly Scala.

I've worked with a number of early stage startups, on projects ranging from developing AI personal assistants to teaching over 200 kids to code. I have a soft spot for Clojure and functional programming.

I'm an instructor at Code First: Girls, organiser of Code && Cake, and curate London Tech Meetups. I enjoy speaking at events.

My academic background is in Politics, Philosophy and Economics, and I have a particular interest in the effects of unconscious bias in hiring processes.

When I'm not doing those things, I'm usually found advocating for effective altruism (can I recommend this book?) or behind a drum kit.

Armadillo illustration by Jenny Brennan

(why not?)