Sebastian Bulgarin
Software Engineer
Hello!
I’m Sebastian Bulgarin and I’m a student at Miami Dade College currently studying for a Information Systems Technology bachelor’s degree with a Software Engineering concentration. I’m Miami born and raised currently living in South Miami, some names I go by include Seba, Seb, and SebaSphere online.
Technology has always fascinated me, which I have a passion for turning abstract ideas into concrete implementations. I’ve been interested in many buckets including server administration through managing Minecraft servers, engineering my own Minecraft mods, and I’ve recently been getting into mechanical design. From setting up my own virtualized WAN/LAN networks to managing relational/non-relational databases, my interests and skill-set touches many facets.
On my freetime, I like doing mod development for the popular videogame Minecraft, which I’ve included a small selection on my commissions page. I love traveling, some of my favorite places I’ve been include Hokkaido, London, and New York. I also like to do CAD design on my freetime, most wackiest thing I’ve modeled is a potato holder for my old aquarium.
Certifications
AWS Certified Cloud Practitioner
Fundamental understanding in how different AWS services work and when to use a specific service.
Verify my certification here.
Skills
Programming Languages
- Java/Kotlin/Scala
- Bash
- Python
- C++
- JavaScript / TypeScript
Tools
- Docker and Kubernetes
- Debian Linux and Windows
- ElasticStack
- MongoDB and MySQL
- SaltStack
Technical
- Understanding of DNS
- Network organization with subnets
- Database Management
- File transfer through FTP
- Analytical skills as Tech Support
Experience
Developer @ Realfinity
Fullstack Developer working in Angular and NET in a Azure ecosystem since August 2025
I work in a agile environment converting stakeholder requirements into specific requirements. I’ve been finding the mortgage industry a interesting field to work in as a developer, which the features I’ve worked on provide assistance to Realfinity’s loan processors, dual licensed agents, and borrowers from end to end.
Here, I’ve learned a lot on how established development teams operate and function themselves. Working at Realfinity has been a good opportunity to learn more about how established companies use CosmosDB and containerization in Azure, integration of AI agents into customer workflows, and working with other developers in a professional setting.
LLM Engineering Specialist
Software Developer validating code output since June 2025 on a contract basis
Here, I’ve worked at companies including DataAnnotation, Alignerr, and fleet.ai on a contract basis.
At these gigs, I’ve worked on a variety of tasks from structured tool calls in preset environments, comparing the output of LLM code output on different axis’s, and providing Quality Assurance for this work on other tasks. At these companies, I’ve grown my toolset on understanding the unique challenges writing and understanding LLM output proposes.
Mod Developer
Freelance Developer making custom Minecraft mods since March 2024
What started as a hobby since early 2020 turned into a source of income, where I turn creative ideas into a completed vision.
Some of my content done here has been viewed by millions of individuals through YouTubers subcontracting me for a custom creation.
Now, I’m taking on less development work then I used to but it’s been fun to take on a project manager role for subcontracting development on work that does come in. Working on translating abstract customer requirements to completed proposals then a completed product has taught me a lot on what it means to work to make a great product.
Support @ Shockbyte
Customer Support at Shockbyte from August 2021 to May 2024
I’ve provided technical support to thousands of individuals at one of the leading Minecraft server providers with hundreds of thousands of clients.
Aside from purely customer support, I was also involved in server management and active community involvement for Shockbyte’s past event servers.
I liked working at Shockbyte as it was a great opportunity to grow my understanding of how read, understand, and solve technical issues and convert this into a way a layman would understand.
Some of my Projects
PyCad – devpost.com/software/pycad
PyCad was a interesting project in the sense it was my first ever hackathon project, it was fun to work on delivering a programmatic CAD editor running in a Electron app. Me and my team essentially made a electron app in Vue.js that allows one to convert code to a functional 2D object that can be exported as a STL for 3D printing.
It was insane working (and sleeping!) late nights at the FIU campus grinding to bring a CAD editor to life. I found it super fun meeting dozens of people and I found shellhacks an awesome experience to pitch a product we built.
I chugged along a whole FDM and Resin printer to mass produce dozens of demo pieces, which was definitely flashy and helped me meet a lot of cool people.
Owocraft – modrinth.com/mod/owocraft
Owocraft was a client project for BamBaeYoh, which I found the technical challenges of integrating the C++ API for owogame.com a good experience to learn more about foreign memory access through Project Panama. Owocraft was also experience to learn about integrating python interpreted in the JVM with jython deeply, which I had developed out a scripting system to integrate 30+ different integrations with support to register more events through a API I developed out.
I found this to be a really cool project and found it super cool owo was able to provide a free haptic vest for testing, which while I was using their testing software, this still allowed me to fine-tune so the client has a fun experience.
I hadn’t heard of Bam’s youtube channel till he contacted me but it was amazing to see a Mogswamp collaboration video with the product I made, one of the YouTubers I’m familiar with in the Minecraft space.
Homelab
Computer I built with server-grade hardware that I use to host websites, game servers, and generally test whatever I’d like.
I’m currently hosting a Proxmox server with each VM networked behind a virtualized instance of pfsense.
The computer is backed by a UPS, which helps fight the unreliability of Florida power during hurricane season 🙂
