About

Who I Am

I'm Oskar Budzisz, a software developer based in Edinburgh with over 6 years of experience in Java web application development. Currently pursuing a Master's in Software Engineering at Edinburgh Napier University.

What I Do

I specialize in building full-stack web applications with a focus on scalable backend systems. My work spans from enterprise systems to high-performance gaming infrastructure supporting thousands of concurrent users.

Experience

Freelance - Software Developer (March 2025 - Present)

• Building automation bots for esports tournament management on the FACEIT platform
• Collaborating with esports professionals to deliver competitive gaming solutions

Freelance - Java Game Developer (April 2020 - January 2021)

• Designed scalable gaming network infrastructure on AWS with dynamic server deployment
• Achieved 99.97% uptime using MongoDB and Redis for fault-tolerant database solutions
• Reduced operational costs by 30% through intelligent load balancing

Diageo - Software Engineering Intern (June 2019 - July 2019)

• Contributed to warehouse inventory tracking system
• Worked in an enterprise development environment

JPMorganChase Assesment - Assesment

• Integrated Kafka into a Spring Boot microservice to consume and deserialize high-volume transaction messages using a configurable topic and embedded Kafka test framework.
• Implemented transaction validation and persistence logic with Spring Data JPA and an H2 SQL database, including entity modeling and balance updates across relational User records.
• Connected the service to an external REST Incentive API, processing incentive responses and incorporating them into transactional workflows.
• Developed a REST endpoint for querying user balances, returning JSON responses through a Spring controller while maintaining clean architectural boundaries.
• Verified system behavior using Maven test suites and debugger-driven inspection, ensuring reliability across message ingestion, database operations, and external API interactions.

Tech Stack

Languages & Frameworks

• Java, Spring Boot, Hibernate ORM, JPA

Databases

• PostgreSQL, MongoDB, Redis

Infrastructure & DevOps

• AWS, Docker, GitHub Actions, Jenkins
• Gradle, Maven

Other

• Git, Grafana, Discord API
• Graphics Programming (Vulkan)

Education

Master of Software Engineering - Edinburgh Napier University

Get in Touch

• Email: oskar.budzisz4@gmail.com
• GitHub: oskarscot
• Location: Edinburgh, Scotland

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Open to challenging opportunities where I can contribute to meaningful projects.