Paul Bone

About Me

I am a talented software engineer and computer scientist. My interests include programming language implementation and performance, including parallelism and concurrency.

I work for Mozilla on the Firefox web-browser's site isolation project. Previously I worked on the JavaScript engine's garbage collector.

In my spare time I work on the new Plasma programming language, which aims to bring the worlds of functional and imperative programming together. By combining these programming aproaches Plasma will make it easier for teams to create large scale, reliable, high-performance parallel and concurrent software.

I also like to bake and cook, ski and play the flute. I also write about infertility and related issues.



I started programming when I was 12 with QBasic, by the time I was 15 I was teaching myself C/C++. After high school I studied computer science at University then joined the work force full-time. Shortly afterwards I was introduced to functional programming; intoxicated by the safety of pure declarative languages and the challenge of multicore computing I decided to peruse a Ph.D. on this topic.

After completing my Ph.D. on Automatic Parallelisation for Mercury I re-joined the work force supporting Mercury (a logic-functional language) in production. I used the skills developed during my Ph.D. to analyse and improve the performance of Mercury programs. Now I work on the garbage collector in Firefox's JavaScript engine.

In mid-2015 I started work on the Plasma programming language in my spare time. Plasma is a pure declarative language. Its goals are to find a compromise between declarative and imperative programming and to provide state-of-the-art parallel and concurrent programming features.

When I'm programming, writing, reading or thinking about programming I like to spend time with my family, go alpine skiing and sometimes play the flute.

Recent blog posts

— The right amount of poison

Firefox poisons memory, but how much poison is the right amount?

— Waiting for web content to do something in a Firefox mochitest

How to write a Firefox test that waits for a tab to wait for a web worker and avoid (most) races.

— Running the AWSY benchmark in the Firefox profiler

A post for future me who may wish to profile AWSY again

— Project MemShrink

I’m starting a new project to reduce Firefox’s memory footprint

— Case Sensitivity In Grammars

A recent change to Plasma caused me to think choices that various languages make with regard to ambiguity in their grammar that is often resolved by case.

See all blog posts.


Presentations and interviews

The publications of this section include conference presentations, talks and other interviews. They are not academic / peer-reviewed those are in the section below, however they're probably more accessible for most readers. They're probably a good place to start for an overview of my work or reporting on other people's work.

Journal articles and conference papers

The publications in this section are academic papers (conference papers, journal articles and dissertations. They are more academically rigorous than the presentations above and have a lot more detail. They're useful if you're looking for detailed information about my work.