Feature · 01

Building
things that
don't break.

SummaryGray Marshall is a third-year CS student at UT Austin — founder of PitLane Systems, co-founder and CTO at Longhorn Sim Racing and Trophy Sim Solutions, and the autonomous systems lead and former telemetry engineer at Longhorn Racing. This is where the work lives.

by Gray Marshall·7 min read·Get in touch →

Gray Marshall

Austin · 2026

Activity · last 30 daysGrayM8

reviews

—given

repos

—touched

commits

—made

In This Issue

I.
Featured Projects
three things, shipping
→
II.
Now
currently at the bench
→
III.
Index
everything, listed
→
IV.
Experience
where I spend my weeks
→
V.
Education
ut austin, cs
→
VI.
Systems
what I reach for
→
VII.
Notes
writing on process
→

At a Glance

2nd

year at UT Austin

2 race cars

shipping telemetry for

3 companies

co-founded or led

McCombs Fellow

2026 cohort

100+

drivers on LSR

<40ms

p99 telemetry latency

“I optimize for tight feedback loops, clear abstractions, and durable software that ships fast and performs under pressure.”

— Gray, on how he works

I.

Feature

Projects, shipping

Three things I've built this year that I'm proud of.

FIG. 02 · lsr

Case 01 · Live · 2025 — Present

II.

Dispatch

Currently at the bench

01 · Longhorn Racing

Building the perception pipeline and simulation suite for the autonomous program.

02 · Longhorn Sim Racing

Tightening user experience and admin workflows across the platform.

03 · PitLane Systems

Developing PitLane Director AC through closed beta.

04 · Trophy Sim Solutions

Ideating an affiliate-linking sim configuration tool.

III.

Index

Everything, listed

15 projects, archived and active.

2025 — Present● Live

Longhorn Sim Racing Platform

Events, Membership & Competition Management Platform

Next.js 16 · TypeScript · Prisma · PostgreSQL · Supabase · Tailwind v4

2024 — 2026● Live

Formula SAE EV Telemetry System

Distributed Real-Time Vehicle Telemetry & Analytics Platform

Next.js · TypeScript · Python · Kafka · PostgreSQL · Grafana · Protobuf

2025 — 2026● Live

In-Vehicle Driver Dash System

Multi-Screen Real-Time Driver Display for the LHRE FSAE Car

React · TypeScript · Rust · WebSockets · MQTT · CAN Bus · Protobuf · Real-Time

2026 — Present○ In Development

Longhorn Racing Autonomous Platform

FSAE driverless simulation + control stack for Longhorn Racing's autonomous program.

ROS 2 · Python · Gazebo · RViz · Pure Pursuit

2025 — Present● Live

Longhorn Racing Recruiting Platform

Applications, scorecards, and admin review for Longhorn Racing's recruiting cycle.

Next.js 16 · TypeScript · Tailwind v4 · Firebase · AWS SES · Google APIs · SWR

2026 — Present○ Closed Beta

PitLane Director AC

Broadcast director for Assetto Corsa sim racing leagues

Electron · TypeScript · React · CSP Lua · WebSockets · OBS

2026 — Present● Live

trophysim.com

Marketing site for Trophy Sim Solutions — championship-standard sim rigs.

Next.js 16 · TypeScript · Tailwind v4 · shadcn/ui · Framer Motion · Resend

2026● Live

Invest Check

Marketplace for verified, reconciled trader histories — built under PitLane Systems for Adam Edwards.

Next.js 16 · TypeScript · Drizzle · Neon · Better Auth · Stripe · Resend · Recharts · Tailwind v4

2026 — Present● Live

pitlanesystems.com

Marketing, auth, and licensing hub for PitLane Director AC

Next.js 16 · TypeScript · Better Auth · Stripe · Neon · Cloudflare R2

2026● Live

Personal Website (v3)

Third-Generation Editorial + Terminal Portfolio Platform

TypeScript · Next.js 16 · Tailwind v4 · Recharts

2025● Live

AgentWorkspaces

Real-Time AI Collaboration Platform

TypeScript · React · Cloudflare Workers · Durable Objects · WebSockets

Archived · 4

2025○ Archived

Pintos OS Kernel

Scheduling, virtual memory, file systems

C · Operating Systems

2025○ Archived

chArm-v3 CPU Simulator

Cycle-accurate pipelined CPU + cache

C · Computer Architecture

2024○ Archived

Dynamic Memory Allocator

Explicit free-list, coalescing, validation

C · Memory Mgmt

2024○ Archived

Command Interpreter

Parser + execution control

C · Systems

IV.

Engagements

Where I spend my weeks

5 roles, 4 active.

● Currently · 1 mo

Autonomous Systems Lead

Longhorn Racing (FSAE EV) · Austin, TX · Jul 2026 — Present

§Founded and leading Longhorn Racing Electric's first autonomous program including pioneering the driverless effort from the ground up and setting its technical vision, architecture, and roadmap.
§Driving a two-phase roadmap: retrofitting the current Formula SAE car into a driverless proof-of-concept this year, then integrating autonomous capability into the next design cycle toward a competition-ready entry.
§Built a 9-package ROS 2 driverless stack from scratch including procedural track generation, FOV-limited sensor simulation, centerline extraction, pure-pursuit control with a curvature-driven speed law, the FSAE mission state machine, and a live metrics harness.
§Engineered a simulation-first development pipeline with interchangeable backends including a lightweight kinematic model for fast iteration and a full Gazebo physics world sharing an identical ROS 2 topic surface so the autonomy stack can be validated long before hardware.
§Defining the end-to-end autonomy architecture and the integration path from simulation to the physical car, bridging the new autonomous subsystem with the team's existing telemetry and vehicle-modeling work.

ROS 2·Python·Robotics·Autonomous Vehicles·Control Systems·Gazebo·Technical Leadership

● Currently · 4 mos

Co-Founder & CTO

Trophy Sim Solutions · Austin, TX · Apr 2026 — Present

§Co-founded Trophy Sim Solutions LLC (operating as TrophySim) with Mark Yuan (CEO) and Dylan Foley (CDO) to design, source, install, and calibrate professional sim racing systems for motorsport teams and training facilities.
§Architected and shipped the marketing platform (Next.js 16, TypeScript, Tailwind v4) as a content-driven site where a single TS source feeds both rendered pages and JSON-LD schema, eliminating drift between visible copy and structured data.
§Built the Zod-validated, Resend-backed contact pipeline and Cloudflare Turnstile gating for quote intake from early prospects.
§Leading technical direction, including an in-progress affiliate-linking sim configuration tool to streamline spec → quote → purchase.

Next.js·TypeScript·Tailwind·Full-Stack·SEO·Entrepreneurship·Technical Leadership

● Currently · 5 mos

Founder

PitLane Systems · Austin, TX · Mar 2026 — Present

§Founded PitLane Systems to build broadcast direction, control, and automation software for sim racing leagues and was selected as a 2026 McCombs Entrepreneur Summer Fellow at UT Austin.
§Architected PitLane Director AC, a Windows desktop broadcast director (Electron, React, TypeScript) that lets a single operator run an entire race broadcast including camera, timing, and on-air graphics - all without ever touching the sim, powered by a CSP Lua sidecar streaming live session data over WebSocket and direct OBS integration for scene and replay control.
§Built an AI director that scores live race action including battles, incidents, lead changes, and pit activity which automatically cuts cameras with broadcaster override, alongside a director dashboard and five broadcast-grade overlays (timing tower, battle graphic, telemetry HUD, track map, lower third) served into OBS.
§Built the company's full distribution and licensing stack end-to-end including a Next.js marketing site, Better Auth + Stripe subscriptions, RSA-2048 JWT licensing, and Cloudflare R2 release delivery with an auto-updater.
§Landed PitLane's first league deployment as the Official Broadcasting Partner for Longhorn Sim Racing's Fall 2026 Lonestar Cup, powering broadcasts for a streamed, multi-university Assetto Corsa league.

Electron·TypeScript·React·Next.js·Stripe·Better Auth·Entrepreneurship·Technical Leadership

● Currently · 1 yr 5 mos

Co-Founder & CTO

Longhorn Sim Racing · Austin, TX · Mar 2025 — Present

§Co-founded Longhorn Sim Racing and lead its technical direction as CTO, architecting and owning the club's core platform end-to-end, now the system of record for membership, events, race competitions, content, and merchandise used across a 100+ member organization.
§Built the platform that runs the club's competitions and events including live scoring, race results, driver tracking, and season standings for the streamed Lone Star Cup league, as well as race calendars across multiple leagues, and event waitlisting and payment systems that strengthened financial stability while cutting attendance friction.
§Architected the full-stack system on Next.js, TypeScript, and Prisma/PostgreSQL (Supabase) with role-based access across six member and officer roles; engineered for reliability and low operational overhead so non-technical officers can run day-to-day operations.
§Designed the team's collaborative CI/CD pipeline and engineering workflow including a pnpm + Turborepo monorepo with PR-gated CI (lint, typecheck, build) and CODEOWNERS review to ensure production stability and lower deployment friction.
§Mentor and train junior engineers in CI/CD and modern web infrastructure to increase development capabilities and redundancy as I grow and lead the development team.

Next.js·TypeScript·Prisma·PostgreSQL·Supabase·Full-Stack·Technical Leadership

○ Former · 2 yrs

Telemetry Software Engineer

Longhorn Racing (FSAE EV) · Austin, TX · Aug 2024 — Jul 2026

§Built and maintained a distributed, real-time telemetry system for a Formula SAE EV race car supporting live data ingest, streaming, persistent storage, and visualization across testing and competition.
§Owned the web-based visualization layer in TypeScript / React surfacing live lap timing, gps data, deltas, vehicle state, driver inputs, energy usage, thermal headroom, and two way dash communications all used trackside across laptops, mobile, and pit displays.
§Designed and built the in-car driver dashboard, balancing real-time data density, clarity, two-way communication, and reliability for high-speed, safety-critical use.
§Led the system's end-to-end architecture from the whiteboard up, defining how data moves from on-car CAN through protobuf, MQTT, and Kafka into PostgreSQL, feeding both Grafana and a custom web viewer.
§Pioneered the team's first working telemetry system, built entirely in-house from the ground up, which has already become critical to driver training and tuning, and is increasingly informing design evolution and validating the team's in-house simulation software.