Staff Engineer, Positioning Systems at Tern

Reid Bundy

I lead Tern’s core positioning team. We build the software that tells a vehicle where it is after GPS has been jammed, spoofed, or switched off.

Illustration. Chicago Loop and Lower Wacker Drive. Streets © OpenStreetMap

I’m a generalist engineer, and I do my best work at early-stage startups.

Wherever I land, I end up at the core of the team, the one who takes the hard, loosely defined work and gets it shipped. At Tern that meant taking over the positioning engine as a proof of concept in 2024 and leading it since. Before that I was an early engineer at Spiff, later acquired by Salesforce, and ran engineering at enroll ml.

Outside work I play adult league hockey and spend as much time as I can with my two sons.

Portrait of Reid Bundy
Employee number at Spiff, 2020
#30
At enroll ml, 2022
#3
At Tern, 2024
#1

Positioning when GPS is gone

GPS is easy to jam, easy to spoof, and gone in tunnels and cities. Tern’s engine doesn’t use it. It works out where a vehicle is from the vehicle’s own sensors, constrained by maps and terrain, with no signal from outside.

The engine

Keeps a vehicle’s position from its own sensor data, constrained by maps and terrain, when GPS is degraded or gone.

Research to production

New localization ideas go from prototype to software that ships in vehicles.

The team

I’m technical lead for the core positioning team, and brought agentic coding into how we build.

In the news

TechCrunch, September 10, 2026 US Army places $11M bet on Austin-based GPS alternative Tern Read the story

Record

  1. 2020
    B.S. Computer Science
    Brigham Young University
  2. 2020 to 2022
    Backend Engineer
    Spiff
    Acquired by Salesforce in 2024.
  3. 2022 to 2024
    Director of Engineering
    enroll ml
    Machine learning for university enrollment.
  4. 2024 to now
    Staff Engineer, Positioning Systems
    Tern
    Leads the core positioning team.

Shipped in

  • C++Tern
  • PythonTern, enroll ml
  • TypeScript and ReactTern
  • C#enroll ml
  • ElixirSpiff
  • Ruby on RailsSpiff