Engineering, Code & Some Magic
From high-performance game engines to payment systems, hardware installations to blockchain indexers — a collection of projects spanning multiple domains.
Arcade gaming machine built with Unity, featuring main game loop, lottery modes, data persistence, and RS232 hardware communication. Stress-tested for 48+ hours on a 2GB Android board with zero memory leaks.
2D scrolling roguelike game built with Unity. Set up the project foundation with behavior trees, localization, Google Spreadsheet integration for data-driven development, and AI behavior design.
Onmyoji
Studio
Cryptocurrency signal platform frontend with AWS cloud architecture integration.
Quantitative trading strategy for Taiwan stock market using Finlab. Includes factor discovery, analysis, combination, backtesting, and overfitting validation. Achieved +59.0% annual return, -21.3% MDD, 2.2 Sharpe ratio.
Taiwan Stock Quant Strategy
Studio
Web3 project built on Sui blockchain for decentralized content storage. Built an Indexer to cache on-chain data in a centralized DB, improving traditional Web3 UX.
Multimedia system built with Unity handling multiple image sources (USB cameras, networked feeds, game outputs). Used Spout texture sharing for projection mapping and dynamic lighting control via Shaders and MadMapper.
Hardware communication and control system using RS485 between modules. A computer receives network packets from the artist and sends serial commands to stepper motors via microcontrollers.
Kinetic art installation using PID control algorithms to determine stepper motor acceleration/deceleration for circular motion via force gauge feedback.
Modern dance performance at National Theater where dancers perform alongside a robot. Built a custom Unity editor for choreography using Keyframe Animation, converting joint angles to stepper motor parameters.
Lightless Landscape
Studio
Led the payment and order systems team. Built payment infrastructure from database design to microservices, integrating Stripe, TapPay, virtual accounts, and custom reconciliation. Resolved production memory leak (40% to 3%).
AIFIAN
Corporate
Vampire Survivors-like game using ECS framework for thousands of entities without lag. Implemented 2D skeletal animation rendering, Genshin-inspired numerical systems, 2D physics collision, and Hybrid ECS.
NFT IP archery-like game. Implemented battle system, leaderboard, and server-side anti-cheat validation.
2D fighting game with 3D characters rendered in cartoon style. Implemented control system, move system refinements, and behavior tree AI modules.
Approach & Philosophy
At Jastron, we believe that great software comes from deep understanding — of the domain, the constraints, and the craft. With 9+ years of experience spanning backend systems, game engines, hardware integrations, and blockchain infrastructure, we bring a rare breadth of expertise to every project.
Our approach emphasizes reliability, performance, and pragmatic engineering. From designing payment architectures handling real money to building ECS engines processing thousands of entities, we optimize for what matters: systems that work under pressure.
Creating Impactful Solutions
Comprehensive software engineering services spanning backend to frontend, hardware to blockchain.
Backend Architecture
High-reliability backend systems with Node.js and TypeScript. Payment gateway integration, microservices design, database schema optimization, and infrastructure as code with Terraform and AWS.
Game Development
High-performance game engines with Unity and C#. ECS frameworks handling thousands of entities, custom 2D/3D rendering, cross-platform strategy, and data-driven development workflows.
Hardware & IoT
Hardware-software integration for industrial and artistic applications. PID control algorithms, RS232/RS485 communication, stepper motor control, and real-time multimedia pipelines.
Blockchain & Web3
Decentralized application development on Sui blockchain. Custom indexers for on-chain data caching, Move smart contracts, and infrastructure management for Web3 projects.
Quantitative Trading
Algorithmic trading systems with factor analysis, backtesting, and overfitting validation. Achieved +59% annual return with 2.2 Sharpe ratio in Taiwan stock market strategies.
The Engineering Journey
Education
M.S. in Networking and Multimedia
National Taiwan University
B.S. in Computer Science and Information Engineering
National Taiwan University
Work Experience
AIFIAN
Senior Backend Engineer
- High-Reliability Payment Architecture: Integrated payment gateways (Stripe, Wise) using Adapter patterns. Designed a dual-layer reconciliation system with Webhook (event-driven) and cron-based async repair to ensure eventual consistency and guaranteed idempotency.
- Database Schema Design: Designed primary keys, foreign keys, and indexes based on data access patterns. Built MySQL/PostgreSQL schemas that balance query performance with data integrity.
- Infrastructure as Code: Managed scalable ECS/RDS/SQS stacks via Terraform Modules, maintaining 99% SLA and consistent environment parity.
- Performance Engineering: Conducted heap snapshot analysis to diagnose memory leaks, reducing memory usage from 40% to 3%; achieved 90% unit/integration test coverage.
River Games
Senior Software Engineer / Lead
- High-Performance Engine: Implemented Unity ECS with custom 2D rendering and physics. Leveraged the C# Job System to scale entity processing from 100 to 2,000+.
- Framework Design: Established DI (Zenject) and MVC patterns to decouple legacy code; designed a Google Sheets-driven workflow to enable data-driven development.
- Cross-Platform Strategy: Encapsulated core combat logic into a shared C# codebase, ensuring consistency between the Unity client and .NET backend.
Freelance
Software Engineer
- Hardware-Software Integration: Developed a custom Keyframe Editor for industrial robots at National Taichung Theater. Implemented PID control algorithms for a kinetic installation at TFAM, stabilizing motor output via real-time feedback.
- Multimedia Pipeline: Engineered a low-latency pipeline using Texture Sharing and Shader-to-DMX for real-time light/projection synchronization.
Early Career in Japan
Software Engineer
- Asobimo, Inc.: Rebuilt combat editors using Unity Timeline and developed Behavior Tree AI modules.
- SEGA: Developed facial animation tools for the Technical Artist team on the Yakuza series.
Technical Skills
Backend
Backend
Backend
Blockchain
Game Dev
Database
Database
Infrastructure
Infrastructure
Infrastructure
Infrastructure
Quant
Frontend
Frontend
Let's Build Together
Have a project in mind? Let's discuss how we can turn your vision into reality.
© 2026 Jastron Limited. All rights reserved.
佳仕宸有限公司