Gianni Rivero
About Me

My name is Gianni Rivero,

I am a Senior Game Developer specializing in Unity with expertise in multiplayer systems, tools engineering, and content pipelines.

I've led cross-disciplinary teams, built core infrastructure with Photon's Quantum 3 Deterministic Multiplayer Engine, and delivered large scale player-facing features from quests and NPC systems to level design workflows.

My work has supported successful partnerships and helped secure multi-million dollar investment.

  • Age25
  • LocationColorado, USA
  • Freelance Status:Available
My Services
Senior Unity3D Developer

Developing memorable and unique mobile android, ios and video games.

Video Game Consulting

Modern and mobile-ready website that will help you reach all of your marketing.

Clients
Testimonials
Geo's competence extends far beyond software design, including but not limited to game design and community management. He's able to find a solution or a general technical direction for sophisticated and creative ideas.
Anonymous
Freelance Client
The quality of Geo's work speaks for itself. He's capable of creating base systems but also capable of polishing those systems up into something that truly shines and gives the player the best possible experience.
Pixelbera
Creative Director / Co-Founder
BeraTone
Geo's capability for independent work was consistently impressive. His strong understanding of C# and Unity allowed him to produce high quality systems which we still utilize in “Fire & Maneuver.” His work was always of the highest quality, reflecting his understanding and application of the principles of game development.
Griffin Johnsen
CEO
Armchair History Interactive
Geo consistently displayed an admirable level of dedication and commitment to our project... showcasing his impressive technical capabilities and quick learning skills. He was a valuable member of our team, and his contributions have played a pivotal role in the success of "Fire & Maneuver".
Aaron Legault
Lead Developer
Armchair History Interactive
Geo's competence extends far beyond software design, including but not limited to game design and community management. He's able to find a solution or a general technical direction for sophisticated and creative ideas.
Anonymous
Freelance Client
The quality of Geo's work speaks for itself. He's capable of creating base systems but also capable of polishing those systems up into something that truly shines and gives the player the best possible experience.
Pixelbera
Creative Director / Co-Founder
BeraTone
Freelance Pricing
Standard
$30/ hour
  • Unity3D Developer
  • C# Programmer
  • Database Management
  • Systems Consulting
  • Community Building NEW
  • Crowdfunding Management NEW
Premium
$37/ hour
  • Unity3D Developer
  • C# Programmer
  • Database Management
  • Systems Consulting
  • Community Building NEW
  • Crowdfunding Management NEW
Skills
  • Unity3D
  • Multiplayer
  • Game AI
  • Game Systems
  • Game Tools & Utilities
  • JSON & SQL Databases
  • Level Design
  • UI/UX
  • 3D Modeling
  • C#
  • Java
  • C++
  • JavaScript
  • HTML
  • CSS
  • HLSL
Experience
2023 - 2025
Senior Developer
BeraTone
BeraTone Technologies
  • Built core multiplayer infrastructure using Photon’s Quantum 3 deterministic engine (ECS architecture).
  • Coordinated with Art, Sound, Animation, and Level Design teams; supported leadership on gameplay and MMORPG systems.
  • Produced and co-directed game trailer that helped secure $2M in seed investment.
  • Designed and implemented player-facing systems including 70+ quests, crafting/recipes, reputation & dialogue for 50+ NPCs, cosmetics, housing & decoration, and one-time drops.
  • Created level design tools, workflow automation, prototype UIs, and asset organization systems that improved development efficiency.
  • Guided level designers through concept, gameplay, and content passes for multiple environments across 6 levels.
  • Authored and maintained in-house notion, GDDs, TDDs, and feature specifications.
  • Scoped and delivered multiple partner/corporate collaborations, including Web3 integrations.
2022 - 2023
Solo Developer
The Final Bastion
GeoGianni Games
  • Developed a real-time multiplayer game using Photon's PUN & Steam integrations
  • Used A* to create real-time Tower Defense Pathfinding for enemies
  • Managed player progression and in-game currency through real-time database using Firebase for Unity3D
  • Created prefab levels in Unity each with multiple settings including time of day and difficulty
  • Created and balanced a roster of 25+ towers & 50+ minions across PvP and PvE gamemodes
  • Managed a small game project on a minimal budget from beta to an early access release
2019 - 2020
Lead Backend Engineer
PlateChasr
  • Developed and Operated an application backend software and database using JAVA, JSON and Firebase
  • Launched and Maintained Apple IOS release & Oversaw application crowd testing
  • Aligned Administrative & Corporate decisions with technical needs through direct communication
2023 - 2024
Lead Developer
Unreleased Title
Freelance Client
  • reated detailed development timeline from conception, including crowd funding, social media outreach, and potential partnerships
  • Designed and Implemented Core Gameplay Systems including Enemy AI, Weapon System, Base Building System
  • Created A Living Dynamic simulation including Procedural Generation, A Dynamic Faction System, and multiple simulation grids
2021 - 2023
Senior Developer
Fire & Maneuver
Armchair Historian Interactive
  • Created and operated database containing 7 unlock-able nations, player progression and seasonal rankings
  • Designed and implemented core turn-based multiplayer gameplay systems including player unit and AI battle mechanics, multiple victory conditions, and perk system
  • Lead concept and development for the Cover and Destructible Building System and Environmental Tiles and Effects
  • Implemented Game Art in the form of levels, water, season, and dynamic time shaders and other Effects
  • Wrote and Implemented extensive Tutorials, History based Scenarios & an in-mission Task System
  • Created and maintained a game level and logic creator that created all 25+ maps and 10+ scenarios
April 2022
Unity Developer / VFX Artist
Saturday Night Live
NBCUniversal
  • Worked with leadership to independently bring a scene from concept to final render
  • Advised management on improved revision work flow for greater vision accuracy
  • Created multiple 11th hour assets, including modeling, texturing, and finalizing to render
Quote
The pinnacle of game design craft is combining perfect mechanics and compelling fiction into one seamless system of meaning.
Tynan Sylvester
Tynan Sylvester
Game Developer
Rimworld