I am Joshua Sepúlveda, a Game Designer and Developer focused on creating immersive and meaningful player experiences. I specialize in tech design, combat design, mechanics and cinematics that balance gameplay with narrative. I excel at leading cross-functional teams, aligning design, programming and art, and I have a strong track record prototyping, launching and iterating post-launch. I bring a solution-oriented mindset and a meticulous, strategic approach to every project.…

Joshua Zack

I am Joshua Sepúlveda, a Game Designer and Developer focused on creating immersive and meaningful player experiences. I specialize in tech design, combat design, mechanics and cinematics that balance gameplay with narrative. I excel at leading cross-functional teams, aligning design, programming and art, and I have a strong track record prototyping, launching and iterating post-launch. I bring a solution-oriented mindset and a meticulous, strategic approach to every project.…

Available to hire

I am Joshua Sepúlveda, a Game Designer and Developer focused on creating immersive and meaningful player experiences. I specialize in tech design, combat design, mechanics and cinematics that balance gameplay with narrative.

I excel at leading cross-functional teams, aligning design, programming and art, and I have a strong track record prototyping, launching and iterating post-launch. I bring a solution-oriented mindset and a meticulous, strategic approach to every project.

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Skills

Experience Level

Game Design
Expert
Unity 3D
Expert
Godot
Intermediate
Unreal Engine 4
Intermediate
C#
Intermediate
Github
Intermediate
Blender
Intermediate
C++
Beginner

Language

English
Fluent
Portuguese
Intermediate

Work Experience

Interactive Designer at Pharus SpA (Consultora)
October 1, 2024 - February 28, 2025
UX research and UX/UI design for Corteva Agriscience agronomy platform; researchers and interactive mockups of platform flow; designer for internal document management software for risk prevention consultancy; recognized for initiative and leadership.
Game & Level Designer at Amber Studios
April 1, 2024 - August 31, 2024
Designed mechanics, levels and systems for the Mexican Ninja project; delivered a high-level prototype showcased at Gamescom 2024; implemented a new Game Design Document (GDD) format to improve development agility and team versatility; demonstrated leadership across design, art and engineering.
Interactive App Designer at EDUK Diseño
July 1, 2023 - December 31, 2023
Construct 3 prototyping; UX/UI design for educational mobile and desktop applications; prototyped and structured UX and UI in Figma and Adobe Suite; implemented UI in Construct 3 with HTML/CSS; conducted usability testing and ongoing improvements.
Game & Level Designer at C2 Game Studio
July 1, 2022 - December 31, 2023
Unreal Engine level design, prototyping and documentation; implemented mechanics, cinematics and game flow for the multiplatform project 'Astor: Blade of the Monolith'; led level design, combat and puzzle elements; created cinematics with a filmic finish; collaborated closely with cross-disciplinary teams.
Interactive Designer at InvadeLab
January 1, 2022 - June 30, 2022
Programming and integration of interactive elements for the Programa Preventivo SENDA across Chilean schools; applied Design Thinking and used Figma to define interactive flows; implemented interfaces with Construct 3, HTML and CSS.
Game Designer at Amber Studios
February 28, 2025 - Present
Combat and technical game designer for the Mexican Ninja project; prototyped and developed high-quality enemies and combat mechanics; contributed to prototype delivery and ongoing development; enhanced Unity workflow and cross-disciplinary collaboration.

Education

Add your educational history here.

Qualifications

Microsoft Certified: C#
March 1, 2024 - December 12, 2025
Google UX Certification
January 11, 2030 - December 12, 2025

Industry Experience

Gaming, Software & Internet, Media & Entertainment, Education, Professional Services
    paper Astor: Blade of the Monolith

    Monolith is a wonderful project where I had the opportunity to work as a Level Designer. I was mainly in charge of putting together the levels grayboxes, new mechanics, puzzles, cinematics and both encounters and boss fights.

    In addition, I also worked on the documentation of these levels and had the privilege to come up with new bosses and mechanics to improve the game experience.

    paper Mexican Ninja

    Mexican Ninja is the latest project i’ve been working on. Together with the Amber team managed to make this amazing Hack’n’Slash Rogue-lite game set in a mixed dystopia between Japan and Mexico called Nuevo Tokyo.

    My job on this project is to give life to the combat in terms of enemies (and bosses!), skills, world events and more!

    In addition, I sometimes code some mechanics for levels, enemies and boss orchestrations.