Hello, my name is Tonny Jansen
I'm a
I'm a developer with extensive experience for over 8 years. My expertise includes Web Development, Mobile Development, Game Development, Web3 Development, and many more...
About Me
I'm Tonny Jansen and Web | Mobile | Game | Web3 Developer
As an experienced developer, I've contributed to various projects across different domains. Rather than listing all my credentials here, I invite you to explore my portfolio and past work. If you're looking to expand your team or seeking additional developers, I'd love to collaborate and achieve success together.
React
React Native
Rust
Solidity
Node.js
Flutter
Web3
Blockchain
Education
2014 - 2018
FPT University
Bachelor Degree of Computer Science
Experience
2024 - 2025
Dead Bear Inc, 0XFX PTD
I participate in all phases of the software development lifecycle, from design to deployment. I build and optimize web and mobile applications using modern backend and frontend technologies. I collaborate with cross-functional teams using Agile practices, code reviews, and testing methodologies. I continuously improve performance, reliability, and code quality while adopting new technologies.
2022 - 2024
Stakit
I built the Stakit Raiding System backend in Rust, implementing a customizable point-based reward system driven by Twitter engagement actions. I designed and developed a scalable Solana NFT staking microservice in Rust, integrated with existing backend systems for staking operations and data persistence. I expanded and secured the Solana NFT staking smart contract to support on-chain NFT lockups, reward calculation, and withdrawals. The system supports flexible reward models with seamless backend integration.
2019 - 2021
Mad Dog Car Club
I developed and optimized React and Next.js components, improving development speed by 9%. I led best-practice implementation across teams, reducing rework by 23% and operational costs by 15%. I introduced database caching and structured RESTful and serverless backends, increasing performance and user engagement by 30%. I improved overall software quality by fixing 150+ bugs across multiple backend and cloud technologies.
Services
Web Development
Building responsive and scalable web applications using modern frameworks and technologies for optimal user experience.
Mobile Development
Creating native and cross-platform mobile applications for iOS and Android with smooth performance and intuitive interfaces.
Game Development
Developing engaging games including casino and slot games using Unity, Unreal Engine, and modern game development frameworks for various platforms.
Web3 Development
Building decentralized applications (dApps) and smart contracts on blockchain networks with cutting-edge Web3 technologies.
