Full Stack Engineer · Simulation Developer

Welcome to my portfolio!

Full stack engineer with experience building enterprise applications, VR/MR training simulations, and cross-platform mobile apps. From Spring Boot microservices and Kubernetes deployments to Unreal Engine and React Native -- I love building software that's creative, functional, and impactful.

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Leron Bergelson

Experience

Where I've worked and what I've built.

Full Stack Engineer

Paymentus
Jul 2025 – Present
  • Enterprise e-billing apps with Spring MVC, AWS S3, React, and Node.js
  • Microservices integration and custom Kubernetes job automations per biller requirements
  • Multi-team collaboration across complex biller environments to deliver reliable end-to-end solutions
Java Spring MVC React Node.js Oracle SQL AWS S3 Kubernetes Microservices CI/CD
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Software Developer (Full Stack / Unreal Engine)

ChimeraXR
Mar 2021 – Jul 2024 3 yrs 4 mos
  • VR/MR training simulations in Unreal Engine for defense and law enforcement
  • React Native companion app with Spring Boot backend for performance analytics
  • Headless Unreal game servers on AWS EC2 for scalable multi-instance VR simulations
Unreal Engine 5 C++ React Native Spring Boot JWT Auth AWS EC2 VR / MR REST APIs
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Software Developer

Canadian Food Inspection Agency
May 2023 – Apr 2024 1 Year
  • Centralized SSO authentication system with JWT and role-based access control
  • Dynamic React UIs integrated with RESTful APIs for real-time data handling
  • Migrated applications from React to Vite; contributed to Agile Scrum workflows
SSO JWT React REST APIs Vite Jest Agile Scrum

Certifications

Professional credentials across cybersecurity, cloud, and infrastructure.

CNCF / Linux Foundation

Certified Kubernetes Application Developer (CKAD)

 In Progress
Amazon Web Services

AWS Certified Developer – Associate

 In Progress
Google

Google Cybersecurity Certificate

 Certified
CompTIA

Security+ (SY0-701)

 Certified
Splunk

Core Certified User (SPLK-1001)

 Certified
Splunk

Core Certified Power User (SPLK-1002)

 Certified

Interactive Projects: Apps & Simulations

Explore a selection of mobile apps and real-time simulations built with tools like React Native and Unreal Engine . From intuitive mobile solutions to immersive interactive experiences, this work reflects a focus on usability, performance, and real-world impact.

Education

Where I studied.

BSc Computer Science

Big Data Systems Concentration

Wilfrid Laurier University

2020 – 2024 · Waterloo, ON

Game – Programming

Advanced Diploma

George Brown Polytechnic

2017 – 2019 · Toronto, ON

Contact

Get in touch

Contact me on LinkedIn