I'm Carlos Jiménez

Who I am

I’m a UI & Gameplay Programmer with a strong background in C++, C#, Unreal Engine (UE4/UE5), Unity, Godot and software architecture, primarily developing systems for PC and console game development.

Over the past 7+ years I’ve combined technical depth with cross-disciplinary collaboration — from designing and maintaining UI frameworks, to implementing HUDs, menus, and in-game interfaces, to developing tools and pipelines that streamline workflows for designers and artists. I’ve also taught UI programming with Unreal Engine 5 at top universities in Madrid, training the next generation of game developers.

I’m currently open to new opportunities as a UI Programmer / Gameplay Programmer in the games industry, where I can continue contributing to engaging, user-focused player experiences.

When I’m not programming, you’ll usually find me as a game master running tabletop RPG campaigns or exploring new video games and board games. These hobbies keep me creative, sharpen my systems-thinking mindset, and constantly remind me why I love working in game development.

What I'm doing

MercurySteam

I've been a UI Programmer since June 2022, using proprietary technologies to develop User Interfaces for AA/AAA projects like Blades of Fire.

UI Professor at U-tad

Professor for the User Interface Programming subject in the Games Programming Master’s Degree, focusing on UI implementation with UE5.

UI Professor at UCM

Professor for the User Interface Programming subject in the Games Programming Master’s Degree, focusing on UI implementation with UE5.

What I've done

Professional Projects

Blades of Fire

"From the award-winning studio MercurySteam, comes a new action-adventure where you forge your own weapons and face fierce enemies in a unique combat system." AA Action/Adventure RPG.

Built and maintained a custom UI framework in a proprietary engine (C++ & Lua).
Created HUDs, menus, and layouts.
Developed internal tools for designers and artists, improving workflows.
Collaborated with cross-discipline teams to deliver high-quality UX.
Integrated UI features with gameplay data and progression systems.
Perforce, Jira, Confluence.

Check the official website

Livraria João

Practice Portuguese with this cute 3D game where you manage a bookshop, selling classic brasilian books and solving exercises.

Unity (C#).
Use of Unity's Navigation.
State Machines.
Multiple 2D UI minigames (word search, drag and drop, choose correct answers, etc.).
Avatar customization.
Saving and loading data.
Adapted to WebGL, Android and desktop.

Play on its site

Legends of Hapax

Classic turn-based 3D game inspired by FFIX and Golden Sun. Worked on demo.

Unity (C#).
Behavior trees for complex enemy and bosses AI.
Combat system.
Dialogue system.
Customizable load screens.
Scene persistance.

Check on Steam

Personal Projects and Jams

Porompomperro

Use your delicate bubble to fish cards from the bottom of the sea! Avoid fishes and collect 'em all! Submission for the Global Game Jam 2025.

Godot (GDScript).
Development of menus and HUD.

Play on itch.io

Kingdom of Jesters

Kingdom of Jesters is a funny "game of minigames" in which controls are divided on two zones of the keyboard or controller for maximum laughs. Submission for the Global Game Jam 2024.

Godot (GDScript).
Development of menus and HUD.

Play on itch.io

Spooky Hat Shop

Master's Final Degree Project. Overcooked-like game about managing a hat shop for ghosts with procedurally generated dungeons. Worked on demo.

Unreal Engine 4.27 (C++).
Part of a team of over 40 students.
Procedurally generated dungeons and puzzles.
Multiple complex AIs.
2D minigames for hat crafting and multiple purpose UI.
Use of Perforce version control.

Play on itch.io

Roots of Pain(t)

A survivors-like game with some fine art made in the amazing MSPaint software. Survive as long as you can while fighting hordes of evil vegetables. Level up, unlock powerful skills and mow your way through the garden! Submission for the Global Game Jam 2023.

UE5 (Blueprints).
Art made with MSPaint.
UI, Gameplay, AI.

Play on itch.io

Damng!: La balada del Capitán

Tactical turn-based game inspired by games like XCOM or Battle Brothers. Help a band of scoundrels get revenge for the death of their former captain. Submission for the Spain Game Devs Jam II.