Software engineer, consultant, lover of learning.

I’m Alexander, a software engineer and consultant based in The UK. I’m the founder of Keliris Consulting, where we help enterprises build modern, fast and reliable software. I mostly focus on Rust 🦀, Golang, Node.js, Typescript, React and AWS. I’m also a keen musician; playing the piano, guitar and renaissance lute.

How to add a custom theme for syntax highlighting with Astro and Shiki

November 9, 2023

Shiki makes use of vscode themes and Astro allows you to easily customise the Shiki config for markdown.

How to set up Rust in GitHub Actions

November 8, 2023

I like to set up CI for nearly all my side projects, here is how I set it up for Rust.

Lightweight templating with envsubst

October 26, 2023

Sometimes you need to substitute values in a structured text file and envsubst might just be the utility you need.

Auth0 `loginWithPopup` error and workaround

September 25, 2023

When `crossOriginIsolated` is enabled, the Auth0 `loginWithPopup` method fails with an error. This article explains the error and suggests a workaround.

Work

Company
Webb Technology
Role
Senior Full-Stack Engineer
Date
2022 Present
Company
Warby Parker
Role
Senior Full-Stack Engineer
Date
2022 2023
Company
Hagerty
Role
Senior Full-Stack Engineer
Date
2020 2022
Company
Eaze
Role
Senior React Native Engineer
Date
2020 2020
Company
Formidable
Role
Senior Full-Stack Engineer
Date
2020 2023
Company
Hive
Role
Senior React Native Engineer
Date
2018 2020
Company
Keliris Consulting
Role
Founder
Date
2018 Present
Company
Rota
Role
Full Stack Software Engineer
Date
2016 2018
Company
Freelance
Role
Frontend developer
Date
2015 2016