# Nathaniel Mar

> Founding Engineer at Arize AI

Location: San Francisco Bay Area, United States
Profile: https://flows.cv/nathanielmar

Software engineer and technical leader with 16+ years at Silicon Valley startups, from early stage through scale-up. For the past 8 years, I've focused on building end-to-end AI/ML systems and infrastructure.

I do my best work in small, nimble teams tackling greenfield projects and new strategic bets. Beyond the technical work, I genuinely enjoy building teams and being part of shaping and sustaining the culture around them. Unofficial titles I've picked up over the years include "the glue," "intern whisperer," and "world builder."

Right now I'm in a hybrid IC/Tech Lead Manager role, building features and growing teams that develop AI tools for troubleshooting, evaluating, and improving AI applications.

My background includes scalable high-performance systems, NoSQL databases, data processing, and full-stack web development.

Always happy to connect, whether to swap ideas, explore collaboration, or just talk shop!

## Work Experience
### Founding Engineer @ Arize AI
Jan 2020 – Present | Berkeley, California, United States

### Software Engineer @ PagerDuty
Jan 2015 – Jan 2020 | San Francisco, CA
Joined at Series B; went public in 2019

I worked on the Machine Learning Platform team, providing infrastructure, tooling and support to data scientists and engineers for rapidly experimenting with and deploying data and ML-driven products. The team primarily used Python, Elixir, React and AWS services.

Before that, I was a founding member of a brand new data science product team, tasked with adding adding intelligence and data insights to features on the PagerDuty app. 

I previously worked on a team developing a highly visible set of incident management related features along the entire development stack-- EmberJS, Rails, and backend Scala services, along with maintaining the latter half of PagerDuty’s alert notification pipeline.

For my initial role, I worked on a team primarily developing and maintaining backend services that make up the first half of PagerDuty's alert notification pipeline.

### Software Engineer, Real Time Bidding / Platform Architecture @ TubeMogul, Inc.
Jan 2012 – Jan 2015 | Emeryville, CA
Joined at Series B; went public in 2014, acquired by Adobe in 2016

I worked as a software engineer on the Platform Architecture team at TubeMogul, assisting the User Database team with completing the development and roll out of a new real-time user database processing system, which used Storm and Kafka.

Prior to that, as part of the Real Time Bidding team, I also developed features for and maintained a high-throughput, low-latency real-time bidding system that served billions of ad requests per day.

### QA Manager @ Spigit
Jan 2010 – Jan 2012 | Pleasanton, CA
Joined during seed stage; acquired by Mindjet in 2013

I performed QA Manager, Build/Release Manager, Software Developer, and QA Lead duties. I managed teams of up to five in testing innovation management software used by Fortune 500 companies. In addition, I performed many testing activities myself, both manual testing and writing automated tests.

I also occasionally filled the duties of a build/release manager and software developer, assisted developers with deployments and code repository management, as well as fixed product bugs across the entire web application stack.

### Community Manager @ Spigit
Jan 2009 – Jan 2010 | Pleasanton, CA
I trained clients on how to use the Spigit innovation management platform, guided them in customizing and launching their site to their innovation communities, and coordinated bug fixes, product installation and feature requests.


## Education
### B.A.
University of California, Berkeley

### National Taiwan University


## Contact & Social
- LinkedIn: https://linkedin.com/in/nathanielmar

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Source: https://flows.cv/nathanielmar
JSON Resume: https://flows.cv/nathanielmar/resume.json
Last updated: 2026-04-10