About

Hi, I'm Callo.

I'm Callo, a Roblox developer from the UK who specialises in the technical side of games: the code that sits between a great idea and a great experience.

Most of my work is gameplay systems, cinematic cutscenes, UI, physics and client–server networking. I care a lot about performance, because a system isn't finished until it runs well on a phone in a 50-player server.

I'm currently scripting on Rod & Reef with Shatterworks Inc., and I've previously worked on titles with over 30 million combined visits.

Visits across shipped games
33M+
Major titles
3
Scripting Rod & Reef
Now

Skills

What I bring to a team

  1. Game systems

    Core loops, progression, inventories and economies built to be extended.

    • Gameplay loops
    • Data persistence
    • Inventories & economies
    • Modular OOP Luau
  2. Cutscenes

    Camera work and scripted sequences that sync across every client.

    • Camera rigs & tweening
    • Timeline sequencing
    • Synced client playback
  3. UI

    Responsive interfaces that work on phone, console and desktop.

    • Responsive layouts
    • Animated menus & HUDs
    • Controller support
  4. Physics

    Vehicles, ships, constraints and anything that has to move convincingly.

    • Constraints & assemblies
    • Buoyancy & vehicles
    • Network ownership
  5. Networking

    Server-authoritative code with remotes that are validated and lean.

    • Remote design & validation
    • Replication strategy
    • Anti-exploit checks
  6. Performance

    Profiling and fixing the frame drops and memory leaks players notice.

    • MicroProfiler
    • Memory & connection hygiene
    • Streaming & LOD

Tools I use daily

  • Luau
  • Roblox Studio
  • Rojo
  • Wally
  • Git
  • VS Code
  • Selene
  • StyLua

Experience

Where I've worked

  1. Current

    Scripter — Rod & Reef

    Shatterworks Inc.

    Building systems for an upcoming fishing game.

  2. Previously

    Scripter — Warship Roleplay

    Naval roleplay experience with 22M+ visits.

  3. Previously

    Scripter — Dupoint County Jail

    Prison roleplay experience with 11M+ visits.

Work with me