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Trung Hieu L.

@hieult0806

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5.0
34

7.0

7.0

92%

Senior Dev | 10+ Yrs Exp | Games, Apps & SaaS

$60 USD / Hour

・

Flag of

Canada (2:32 AM)

・

Joined on May 13, 2012

・

6 Recommendations

$60 USD / Hour

・

Results-Driven Execution with a 100% Five-Star Track Record. With over a decade of experience and 34+ successfully delivered projects on this platform, I specialize in taking complex visions from a "rough idea" to a "profitable reality." My approach combines the creative problem-solving of a veteran Game Developer with the structural discipline of a SaaS Architect. Whether you are building a high-performance MMO, a revenue-focused mobile game, or a scalable enterprise web platform, my priority is the same: clean architecture, zero-bug deployment, and high performance. ▬▬▬▬▬▬▬▬▬▬▬▬ Core Pillars of Expertise 🎮 Game Engineering: 10+ years of mastery in Unity (C#), Roblox (Luau), and Java. Expert in physics optimization, multiplayer synchronization, and tick-based game loops. 📱 Mobile & SaaS Development: Expert in Flutter for cross-platform iOS/Android apps and high-performance Web apps using Next.js and NestJS. ⚙️ Backend & Infrastructure: Architecting robust systems using Go and distributed databases like CockroachDB to handle high-concurrency environments. 🚀 AI-Native Workflow: I leverage tools like Cursor to accelerate development speed by 3x without sacrificing code quality or security. ▬▬▬▬▬▬▬▬▬▬▬▬ Why Clients Choose Me 5-Star Reliability: I have a perfect rating because I get the job done right the first time. Founder’s Perspective: I don’t just write code—I think about your project’s ROI, user retention, and long-term scalability. Clear Communication: I bridge the gap between technical complexity and business goals. You will always know the "why" behind the "how." ▬▬▬▬▬▬▬▬▬▬▬▬ Technical Stack Languages: TypeScript, JavaScript, Go, Java, C#, C++, Luau, SQL, Python. Game & XR Development: Unity (2D/3D), Roblox Studio, OpenXR, Photon/Mirror (Multiplayer), Blender (Optimization), Physics Engine Tuning. Web & SaaS Frameworks: NestJS, Next.js, Node.js, React, Express.js, Tailwind CSS, Redux/Zustand. Mobile Development: Flutter, Dart, Firebase, App Store/Play Store Deployment, In-App Purchases (IAP). Databases & Scaling: PostgreSQL, MySQL, MongoDB, CockroachDB, Redis, Supabase. Cloud & Infrastructure: AWS (EC2/S3), Google Cloud Platform (GCP), Vercel, Docker, CI/CD Pipelines. AI & Automation: OpenAI API Integration, Cursor (AI-Native Development), Playwright (E2E Testing), Scraping/Bot Logic.

Verifications

On time

94%

On budget

95%

Accept rate

85%

Repeat hire rate

8%

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Portfolio

Portfolio

13931768
I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

13925849
I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

13925848
I worked on this project from beginning to end, starting from the first prototype and taking it all the way to the final playable web version. This game is a fantasy match-3 puzzle game inspired by ancient temples and mythology. The player matches colorful gems inside a temple-themed board, with a timer, score system, hint button, animated UI, and polished visual feedback for every action. My main responsibility was building the game from scratch and creating all of the visual effects. I handled the gem animations, match effects, board transitions, UI effects, hint interactions, and overall game feel. Every effect was custom-made to match the visual style of the game and make the gameplay more satisfying. Everything was built from the ground up. We did not use any marketplace plugins, ready-made game templates, or prebuilt systems. The gameplay logic, animations, effects, and UI behavior were all developed specifically for this project. The game was made for the web platform, so pe

Game Developer

7038528
Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

8954677
https://play.google.com/store/apps/details?id=com.geestudio.pet_warrior

Quiz the Road

8954658
https://play.google.com/store/apps/details?id=com.geestudio.pet_warrior

Pet Warrios

13931768
I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

I redesigned and optimized a 2048-style number puzzle game for Google Play. The project included improving the game’s user interface, making the board easier to read, refining the gameplay presentation, and creating a stronger app store listing for better discoverability. I also worked on the Google Play ASO, including the app name, short description, full description, keywords, feature highlights, and screenshot messaging. The game combines classic 2048 merge gameplay with extra features such as Match 3-inspired twists, Undo, Destroy power-ups, Time Trial mode, personal best scores, statistics, sound settings, and a clean mobile-friendly design. The goal of the work was to make the game look more polished, easier to understand, and more attractive to puzzle game players on mobile.

Puzzle Game UI Redesign and ASO

13925849
I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

I worked on this project from beginning to end, taking it from the first prototype to the final playable web version. Pepper Magic Saga is a fantasy-themed match-3 puzzle game where players match colorful peppers and fruits to make them grow, complete objectives, and protect the grown peppers from the farmer. The game includes a full gameplay board, tutorial screen, animated logo/menu scene, score system, move counter, timer, character elements, and polished UI interactions. My main role was to build the game system and create all of the visual effects. I worked on the match effects, pepper growth animations, board interactions, item transitions, UI effects, button feedback, tutorial flow, and gameplay animations. I focused on making every action feel smooth, responsive, and satisfying for the player. Everything was developed from scratch. We did not use any marketplace plugins, ready-made templates, or prebuilt game systems. The gameplay logic, matching system, animations, effects,

Pepper Magic Saga — Custom Match-3 W

13925848
I worked on this project from beginning to end, starting from the first prototype and taking it all the way to the final playable web version. This game is a fantasy match-3 puzzle game inspired by ancient temples and mythology. The player matches colorful gems inside a temple-themed board, with a timer, score system, hint button, animated UI, and polished visual feedback for every action. My main responsibility was building the game from scratch and creating all of the visual effects. I handled the gem animations, match effects, board transitions, UI effects, hint interactions, and overall game feel. Every effect was custom-made to match the visual style of the game and make the gameplay more satisfying. Everything was built from the ground up. We did not use any marketplace plugins, ready-made game templates, or prebuilt systems. The gameplay logic, animations, effects, and UI behavior were all developed specifically for this project. The game was made for the web platform, so pe

Game Developer

7038528
Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

Multiple Levels designed for FPS SHOOTER

FPS - Levels Design

8954677
https://play.google.com/store/apps/details?id=com.geestudio.pet_warrior

Quiz the Road

8954658
https://play.google.com/store/apps/details?id=com.geestudio.pet_warrior

Pet Warrios

5.0 · 34 Reviews
34 Reviews
User Avatar
Flag of

Nicolas A.

5.0

$1,200 USD

4 years ago

mobile feature

Fast and quality as always, another project successfully completed.

iPhone
Android
Game Design
Unity 3D

+1 more

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Robert D.

5.0

$11,020 USD

4 years ago

Blockchain mobile game

Lo is a true and consummate professional. Lo is very clear and precise when carrying out his duties. I have not worked with someone who treats the project like his own like Lo. He has diligently and patiently answered my queries and is a man of his word. Throughout the whole project he was able to maintain constant communication as well as go above and beyond what he was required to do. Even after project ends he is there to offer his support to ensure his client's satisfaction.

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Nicolas A.

5.0

$2,850 USD

5 years ago

Bubble spin 2

Another project successfully completed, as always a high quality work, I recommend to work with Lo T.

Mobile App Development
Android
Game Design
Unity 3D

+1 more

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Pablo G.

5.0

$1,500 USD

5 years ago

Omaha 5 cards poker game software

Lo is very honest and works until project scope is achieved as per requirements. I will definetly work with him in the near future again.

Game Design
Game Consoles
Game Development

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Nicolas A.

5.0

$1,650 USD

5 years ago

Game Unity 3d

He is an excellent game designer, this is the 6th game I've worked with him and they are always of high quality. Lo T is a professional and probably the best game designer on this site.

.NET
Android
Game Design
Unity 3D

+1 more

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Experience

Owner

Aug, 2011 - Present

•

14 years, 8 months

XDEV STUDIO

Aug, 2011 - Present

•

14 years, 8 months

I am a certified Developer and a Digital Marketer with 10+ years of experience. I work to build beautiful app/game designs to convert visitors into customers.

Aug, 2011 - Present

•

14 years, 8 months

Education

University of Greenwich

2012 - 2015

•

3 years

Computer Science

Flag of

United Kingdom

2012 - 2015

•

3 years

Qualifications

Google certified developer

2015

Google

I have completed and passed the Google developer certification.

2015

Publications

Games

XDEV

I have 500K+ downloads on my apps in my account and 200 Million+ downloads with companies/clients I have worked with.

Certifications

P

Preferred Freelancer Program SLA

US English - Level 1

US English

Basic Numeracy - Level 1

Basic Numeracy

C++ - Level 1

C++

Freelancer logo US (International) / English
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