Welcome to my portfolio!

I joined Paymentus in July 2025 as a Full Stack Engineer, working on enterprise-scale e-billing solutions that process payments for millions of end users across North America. From day one I was immersed in a complex, multi-biller microservice ecosystem — navigating everything from environment setup and Kubernetes deployments to resolving live production issues for mid- and large-scale billers.

Working across multiple teams and biller environments has sharpened my ability to trace issues end-to-end, understand how channels and components interconnect, and ship reliable solutions that meet rigorous implementation standards.

What I've Built

• Developed and maintained enterprise-scale e-billing applications using Spring MVC , AWS S3 , Java , Oracle SQL , and React / Node.js
• Integrated and extended microservices to deliver biller-specific functionality and resolve production issues
• Delivered custom Kubernetes job automations per biller requirements, adhering to the full IMPL deployment flow
• Collaborated with multiple teams to troubleshoot and enhance client-facing and internal web apps across diverse biller environments
• Supported mid- to large-scale billers by navigating complex environment setups and system configurations to deliver reliable end-to-end solutions

Tech Stack

At the Canadian Food Inspection Agency, I worked as a Software Developer contributing to a range of government digital initiatives. My work spanned front-end applications, authentication infrastructure, and test coverage across multiple active projects simultaneously.

I worked in a collaborative Agile Scrum environment with daily standups, sprint planning, and regular code reviews — contributing to both new features and ongoing maintenance across the team's project portfolio.

What I Built

• Led development of Louis Finesse , a React-based operational search application that retrieves and presents back-end search results for internal use
• Built Nachet Frontend , a UI for classifying seed images acquired from digital microscopes — integrated REST APIs to handle data and display classification results; migrated the project from React to Vite and implemented user testing with Jest
• Wrote comprehensive unit tests and test cases using React Testing Library and Jest for component and code functionality verification
• Implemented deployment environment configuration management for managing and configuring different deployment environments across projects
• Contributed to Membrane Backend , a centralized authentication service for Single Sign-On (SSO), and developed the Membrane Frontend for user interaction — ensuring seamless token-based email verification across multiple client applications using public and private keys
• Actively participated in daily Agile Scrum meetings for efficient project coordination and sprint delivery

Tech Stack

I joined ChimeraXR in March 2021 as the company's first developer, starting with Mythos , a tactical VR training system built for agencies and first responders. The platform supported immersive, high-fidelity scenarios with multiple use-of-force options, quickly becoming one of the most advanced VR training solutions in North America.

My role focused on creating realistic training environments, including Vehicle Close Quarters Battle (VCQB) scenarios, with an emphasis on accuracy, de-escalation, and communication skills.

In 2024, we began development on Project Spear , a mixed reality evolution of Mythos, introducing multi-user MR firearm training with real-time interaction between virtual and physical elements.

Over time, I saw the team grow from a solo developer to a tight-knit group of 10, all working toward pushing the boundaries of immersive tactical training.

What I Built

• Designed simulation software in Unreal Engine for VR/MR training environments — improving realism for military and law enforcement
• Built a React Native companion app integrated with a Spring Boot backend to track and visualize user performance data with scenario-based analytics
• Developed secure Spring Boot REST APIs with JWT authentication for reliable VR-to-mobile communication
• Deployed headless Unreal game servers on AWS EC2 , automating multi-instance VR simulation setup for scalable performance
• Collaborated directly with stakeholders in defense and law enforcement to gather requirements and meet rigorous training standards

Tech Stack

Project Highlight Gallery

Explore the features and systems I built at ChimeraXR. Click each section to expand.

Ghost Recorder — Project Spear

Record, replay, and analyze every frame of a drill

In Project Spear, I developed the Ghost Recorder , a critical feature designed to enhance training and post-exercise analysis in Mixed Reality (MR) environments. The Ghost Recorder captures every frame of a drill, allowing users to review movements, bullet trajectories, and weapon positioning in real time through the playback of ghost characters.

This system enables trainees to analyze shot placement and trajectory accuracy, making it a powerful tool for refining technique and improving situational awareness. The recorder also tracks enemy NPCs, displaying their actions and bullet paths with the same level of detail.

In multiplayer scenarios, the Ghost Recorder supports differentiated ghost replays by dynamically assigning unique colors to each participant, ensuring clear visibility during playback. By recording and storing precise frame data, the system provides a comprehensive and immersive review experience, reinforcing learning outcomes and boosting performance in tactical MR training.

Realistic Instructional Content — VCQB Training

High-fidelity vehicle close quarters battle training modules

At ChimeraXR, I was deeply involved in creating immersive virtual training environments using Unreal Engine, with a particular focus on scenarios that required precise replication of real-world tactical training. One of my core responsibilities was the development of highly realistic VCQB (Vehicle Close Quarters Battle) training modules designed to mirror real-life police and military procedures.

In the VCQB scenario, trainees are guided by an instructional video displayed in a floating widget positioned beside a virtual police cruiser. They are tasked with targeting specific locations on the vehicle, with each successful step advancing the scenario’s progression system. This interactive setup was meticulously crafted to reflect the complexities and demands of actual field training.

By developing these high-fidelity training modules, I helped deliver an immersive, skill-focused environment that teaches technical execution while preparing users for the real-world challenges they may encounter. My work played a key role in advancing ChimeraXR’s mission to provide cutting-edge, lifelike virtual training solutions for law enforcement and first responders.

Hostage scenario demonstration

VCQB training environment overview

Project Mythos — Scenario Highlights

Suspect pull-over, AI reactions, and gyroscope-based weapon tracking

Suspect Pull Over Scenario

This video demonstrates the Suspect Pull Over scenario from Project Mythos. A key aspect of development was ensuring an exceptionally high level of detail for immersive training experiences. Accuracy to real-world scenarios was crucial, providing first responders with realistic and effective training environments that closely mirror real-life situations.

AI Character Reactions

This video showcases the AI character reactions I developed in Project Mythos. Characters remain unresponsive when players hover over them through walls but react appropriately when a weapon is pointed at them in the same room. This emphasizes the importance of line of sight for creating realistic and effective training scenarios.

VCQB Weapon Muzzle Tracking

This video demonstrates VCQB training with weapon muzzle orientation tracking, showcasing my development of a gyroscope feature. This ensures the firearm’s muzzle isn’t raised too high on the y-axis, regardless of its position, for accurate and realistic training scenarios. This feature is essential for effectiveness in tactical training environments.

Multi-User Development

Team-based tactical training across diverse scenarios

This screenshot highlights the implementation of multi-user functionality across various training scenarios, including concert hall venues and school environments. I was directly responsible for developing these multi-user capabilities, which are essential for delivering realistic, team-based tactical training that accurately reflects real-world response situations.

Diverse Hardware Integration

Quest 3 trackers on real firearms and custom hardware solutions

At ChimeraXR, we worked with a variety of hardware integrations to enhance the realism and effectiveness of our VR and MR training simulations. This included attaching custom components such as Quest 3 trackers to real-world firearms, enabling users to interact with their own weapons within virtual environments. Our efforts focused on seamlessly integrating hardware solutions to support authentic, high-fidelity training experiences, bridging the gap between physical tools and digital environments.

Letter of Recommendation

From Taylor McCubbin, CEO & Founder of ChimeraXR: