About me
Get to know me
Who am I?
Software Developer
As a recent graduate of General Assembly's prestigious Software Engineer Immersive bootcamp and
holder of a Bachelor of Science in Technology Development and Management from St. Petersburg
College, I am equipped with a diverse range of technical skills and a strong foundation in software
engineering principles. My academic achievements, including being listed on the President's Honor
List, demonstrate my dedication and commitment to excellence.
When I was a Software Engineer Fellow at General Assembly, I specialized in designing and building
web applications with proficiency in a variety of programming languages and tools, including HTML,
CSS, Python, Javascript, and React. I am deeply passionate about crafting creative and efficient
solutions that deliver optimal user experiences and value to clients.
I am a natural collaborator who thrives in team environments, leveraging my strong communication and
interpersonal skills to contribute meaningfully to cross-functional teams. I am excited to bring my
passion for software engineering to any team and or organization that values innovation, teamwork
and excellence.
William Kategianes Jr
My Skills
Web Development
With a strong foundation in developing, designing, and collaborating on complex web applications, I have honed my skills to deliver exceptional results as part of any development team. Whether building from scratch or enhancing existing projects, I am committed to bringing innovative ideas to life and creating impactful user experiences.
Fully Responsive
My expertise in responsive web design principles ensures that the websites I create are accessible and user-friendly across all devices, making them highly effective for all audiences. With a focus on both design and functionality, I strive to deliver visually stunning web experiences that engage and delight users.
Technologies
My extensive experience in designing and building web applications has given me a deep expertise in technologies such as React, Javascript, HTML5, CSS3, Mongoose, Express, and PostgreSQL. Through countless hours of practice and real-world application, I have become highly skilled in using these tools to deliver exceptional results for a wide range of clients and industries.
Let's work together!
I am available for freelance projects. Hire me and get your project done.
Portfolio
Showcasing some of my best work
- Projects






NetMart Details
Welcome to NetMart! We are a platform for buying and selling used goods, connecting buyers
and sellers in a secure and hassle-free environment.
Our mission is to provide a reliable and easy-to-use platform for people to find and purchase
quality used goods, while also helping sellers to reach a wider audience and sell their items
quickly and easily.
At NetMart, we believe in sustainability and reducing waste. By buying and selling used goods,
we can help reduce the environmental impact of manufacturing new products and contribute to a
more sustainable future.
Our platform is designed to be user-friendly and easy to navigate, with advanced search
features and filters to help you find exactly what you're looking for. We also provide secure
payment and shipping options to ensure that your transactions are safe and secure.
- Client:
General Assembly
- Categories:
Branding
,Web Design
- Date:
10 March, 2023
- Technologies:
Javascript, Django, PostgreSQL






Mamma Mia! Match 2! Memory Game Details
Mamma Mia! Match 2! is a game about memory and most of all concentration! The board contains 10 cards that are face down and must be matched in order to win. You begin playing by clicking on the play button! Click the cards and try your best to match all 10! If you are able to match all the cards before you run out of continues you win!
- Client:
General Assembly
- Categories:
Branding
,Web Design
- Date:
30 January, 2023
- Technologies:
HTML5, CSS3, Javascript






PokeGuess Details
PokeGuess is a game that tests your knowledge of your favorite Pokemon. Hope you are ready to put your mind to the test! All of your favorite Pokemon are here and you can compete against your fellow trainers for the top score. You can create an account and start playing in a few clicks.
- Client:
General Assembly
- Categories:
Branding
,Web Design
- Date:
3 April, 2023
- Technologies:
React, Express, MongoDB






petDOC Details
PetDOC is a digital patient portal connecting pet owners with their veterinary providers. They can manage vet appointments, access medical records, communicate with providers, and use medically-vetted educational resources to stay on top of their pet’s health needs. Our AI-powered System Assessment also helps them better understand their sick pet’s symptoms, empowering them to make well-informed decisions about treatment and medical outreach.
- Client:
General Assembly Spring Hackathon 2023
- Categories:
Branding
,Web Design
- Date:
7 July, 2023
- Technologies:
React, Express, MongoDB