Jo Franchetti

Jo Franchetti

DevRel at Deno

London, United Kingdom


Jo is a DevRel Engineer at Deno. She is passionate about improving developer experience, teaching good use of the web and building sparkly, wearable, internet connected tech. She mentors junior developers, advocates a lot for mental health awareness and is devoted to improving the diversity and inclusivity of the tech industry.


  • Most Active Speaker 2022

Area of Expertise

  • Humanities & Social Sciences
  • Information & Communications Technology
  • Media & Information


  • JavaScript
  • TypeScript
  • CSS
  • Node
  • Deno
  • Web APIs
  • Front End Development
  • Serverless
  • Runtimes

Building a Browser Based Code Editor

Want to demonstrate your cool SaaS product directly in the browser? Or just curious about how things like CodePen or CodeSpaces could be built?

Interactive sandboxes are one of the best ways to entice and onboard developers to your APIs and services. One of the most difficult parts of creating and running a sandbox is building an environment to execute third party code safely and securely.

We’ll level up your developer experience with a demonstration of how to build a browser based code editor with TypeScript and Deno Subhosting. You’ll learn how to make a sandbox that can execute code in a controlled, affordable and secure way right in your browser.

Perfectionism, Impostor Syndrome, Anxiety and Learning to be Kind to Yourself

Ever felt like everyone knows more than you? Spent hours procrastinating rather than starting or finishing a project?

Perfectionism, anxiety & impostor syndrome affect many people in the tech industry. Learn how to spot harmful thought patterns, how to avoid anxious spirals and be kind to yourself!

Working in the tech industry can sometimes make us feel inferior. It is easy to start believing that everyone knows more, or finds the work easier. When we’re surrounded by so many clever people, how can we not start to judge ourselves against them and our work against theirs?

Impostor syndrome - the belief that you don’t deserve to be where you are, and perfectionism - a need to work to impossibly high standards, are exhausting.

Learn how to spot these destructive thought patterns in yourself, how to manage anxiety and procrastination and how to start being kinder to yourself, because you’re awesome and you deserve to be here.

I’ve suffered from all of the above-mentioned syndromes for the majority of my tech career and I mentor many individuals who suffer similarly. Through therapy and research, I have learnt to recognize black and white thinking and depression spirals and I think it is important to share this knowledge wider and start us talking more regularly about mental wellbeing in tech.

Is everything difficult, or is it just me?

It isn't just you.

There are so many pressures on us, not only from our jobs and the tech industry, but from the state of society, politics and the economy as a whole.

Join me on a joyful journey through the alphabet of overwhelm, we’ll cover Anxiety, Burnout, Capitalism, Depression, Emotional Labour and many other fun factors. We’ll talk through how to recognise symptoms in yourself and your friends. Lets learn how to survive, and hopefully thrive, in this ABSea of sh*t.

Let’s make 2023 the year that we put as much thought into protecting our mental health as we do our code quality.

A love letter to long lines and other DX stories

Writing code is fun! Reading it, not so much.

As developers we spend as much, if not more time reading code than we do writing it. However we often forget when coding that we're writing for other humans to read as much as we are for computers to execute.

This talk goes over how to create a better developer experience in your projects by writing code with intent. Leading the reader through your codebase should feel like settling in to watch your favourite TV show; enjoyable and unsurprising.

With this, and other DX skills covered in the talk, we will create maintainable, educational and pleasant to use projects, not only for other developers, but also for our future selves!

Jo Franchetti

DevRel at Deno

London, United Kingdom


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