Joshua Barretto

Plymouth, UK ·

About Me

I’m Joshua, a 22 year-old software developer and Computer Science graduate living in Cardiff, UK. I have a strong interest in software safety, system design and artificial intelligence. I’m proficient in several programming languages and have experience working on large codebases.

What I’ve Done

I have experience working in the maritime industry writing software for unmanned underwater vehicles. I maintain and contribute to a variety of open source projects. My personal projects are all released under open-source licenses and tend to revolve around emerging fields in AI, embedded systems, and automation. Find out more.


I’m available for part-time freelance work. If you’re interested in hiring me, you can contact me here.


  • C++
  • C
  • Rust
  • x86 Assembly
  • Python
  • Java
  • C#
  • JavaScript
  • Zig
  • Vala
Operating Systems & Tools
  • Linux
  • Git
  • BASH
  • CMake
  • Make
  • x86
  • OpenGL
  • GLSL
  • SFML
  • GTK
  • MBed
Platform Administration
  • Wordpress

Tupai (Operating system)

Tupai is a multitasking operating system written in Rust targeting i386, amd64 and armv7 architectures. It focusses on safety, stability, portability and correctness. It is not designed with a specific application in mind, but rather to act as a base for future experiments in software safety. Tupai does not conform to an existing operating system API (i.e: POSIX) but instead aims to implement a new and innovative design.

You can find more information about Tupai here.


Forge (Dynamically-typed programming language)

Forge is a dynamically-typed programming language inspired by JavaScript, Rust, and Python. It aspires to be ‘JavaScript, but less shit’.

You can try Forge online here.

You can find out more about Forge here.

Euc (Software rendering library)

Euc is a versatile, simple to use library that allows 3D rendering on the CPU. It has a portable, compact design that makes it perfect for prototyping ideas, unit testing, or even simple realtime applications.

You can find out more about Euc here.

Funki Crab (Optimising BrainFuck compiler)

Funki Crab is an optimising Brainfuck compiler written in Rust. It’s capable of a large number of Brainfuck optimisation techniques and produces a significant speedup compared to naive compilation.

I created Funki Crab as an exercise in learning about compiler development, Immediate Representation (IR) techniques and optimisation. Brainfuck struck me as a sensible language for such a project given its simplicity, Turing-completeness and wealth of potential optimisations.

Funki Crab is an anagram of Brainfuck. ‘Crab’ is a reference to Ferris, the Rust mascot.

You can find out more about Funki Crab here.


Veloren (Open-world, open-source voxel RPG and engine)

Veloren is a multiplayer voxel RPG written in Rust. Veloren takes inspiration from games such as Cube World, Minecraft and Dwarf Fortress. The game is currently under heavy development, but is playable. At the moment you can explore the procedurally generated world in multiplayer mode and use basic text chat.

You can find out more about Veloren here.

Emul8or (CHIP-8 emulator)

Emul8or is an emulator for the CHIP-8 game system. It can run a variety of CHIP-8 ROMs including pong, space invaders, snake and tetris.

You can find out more about Emul8or here.

Emul8or running Pong


Software Developer

Cambium Networks

Developing an in-house file store and administration web application with frontend and backend web technology.

June 2018 - September 2018

Software Developer

MSubs Ltd

Designing and developing unmanned underwater vehicle control systems, guidance and navigation systems, graphical control interfaces, embedded network synchronisation and more.

June 2013 - September 2017


University of Plymouth

Bachelor of Science
Computer Science
2015 - 2018

Devonport High School for Boys

Computer Science, Mathematics and Economics.
2013 - 2015



joshua [at] jsbarretto [dot] com

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IRC (Freenode)


I'm active on #osdev, #c++, #linux, #c and #rust

Contact Me Now

Alternatively, you can contact me here

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