Hi, I'm William

Full-Stack Developer

Specialized Frontend Web Developer, Backend Engineer and Game Developer

My Profile Pic

About me:

My name is William, im a Full-Stack engineer with 7 years of expertise working with technologies like NodeJS, NestJS, ReactJS, Tailwind, among many other technologies.

specialize in building robust backends and intuitive frontends, focusing on clean code and scalable systems. My background includes database design, SaaS development, and real-world problem-solving. I thrive in both team and solo environments, always aiming to deliver high-quality, maintainable software.

My stack:

My stack is primarily focused to both Back and Front Ends using the right tool for the work that i'll be doing.

I don't only use this sole stack, i know a bunch of other technologies and i use other stacks as well.

Core Stack:

Extended proficiencies:
Programming languages:
Databases:
Tools:
Frameworks:
Others:

Working experience:

Shard Development Team - Project Leader
2024 - Present

I work at Shard Development Team as a project developer and project leader since December 2024. Shard Development Team is a small software and web development company co-founded by a friend and me, built on the principle of delivering clean, reliable code and shipping it to clients efficiently.

As Project Leader, I oversee the entire project lifecycle—from gathering client requirements and designing system architecture to task allocation, implementation, and deployment ensuring every deliverable meets high standards of quality, scalability, and maintainability. I also coordinate the team to prioritize features, unblock technical challenges, and maintain clear communication with stakeholders, ensuring that the final product not only functions flawlessly but also solves real business problems.

CollarAi - Software Developer
2025 - 2026

I worked at CollarAi as a Software Developer on a high-impact project that, for legal reasons, cannot disclose the client nor the specific objectives. My role focused on architecting and developing both the Backend and Frontend of the system.

I was responsible for designing scalable architectures, implementing robust APIs, and building responsive user interfaces. Working within a confidential environment required adapting quickly to changing requirements and collaborating closely with cross-functional teams while maintaining strict data security and privacy standards.

Contact me!

If anything on this page has caught your eye you can contact me!.

Email me
zgenshinzgenshin@gmail.com

Send me an email directly

Check my GitHub
github.com/Cptquacks/

Give an eye to my GitHub

My Facebook
profile/KoichiPain

Nothing there except my social profile

Proudly Crafted on

VS Code

I use visual studio as my daily driver code IDE

Arch Linux

I use arch linux as my daily driver operative system using KDE Plasma

HTML

Because you don't always need the most modern frontend web framework for things to look good

CSS

Because styling not always has the need to be condensed in a additional framework

JavaScript

Because functionallity doesn't always have to come in a complicated way