Andrew Martin
Andrew Martin — Full-stack engineer in SF

I build software
with intent & craft.

Developer Experience & AI Platform @ Credit Karma

16 years shipping for scale. I build fast, resilient products and the developer tooling that ships them — now on Credit Karma's AI Platform team, building delivery tooling the org's 1,000 engineers use to ship to 140M+ members. Alongside that, I'm currently taking on contract work — hourly, fractional, or a full project build. Product, websites, and AI tools.

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Next opening Mon, Nov 16 · 9:30 AM PST
Andrew Martin
Available for contract & consulting

Selected work

Platform, AI, and product work — from developer tooling at fintech scale to full-stack builds for startups and founders.

Spec-first AI workflow — plans and tasks before code.

Spec-Driven Development

An AI-guided spec process that turns ambiguous requests into clear plans, design docs and actionable tasks.

Credit Karma2025

Metric-gated frontend rollouts with automatic rollback.

Progressive Deployment

Safer, faster releases with progressive delivery and automated risk mitigation at fintech scale.

Credit Karma2025
Avante Appointments

Avante Appointments

Full-stack booking system migrated from a Rails API to a single Next.js application.

Freelance2024
BeautyCon Contest App

BeautyCon Contest App

Responsive React contest experience engaging thousands of attendees on-site at a major festival.

Believe Labs2018

More work

Next-gen local development workflowCredit Karma · 2025
Automated frontend risk mitigationCredit Karma · 2024
BeSmartee Mobile AppTonic / BeSmartee · 2024
Automating Configuration for Production ServicesCredit Karma · 2023
ReVive Orthopedics Web ApplicationTonic · 2023
Testing upgrades & workflow improvementsCredit Karma · 2023
Production-parity preview modeCredit Karma · 2022
Credit Karma Money GraphQL APICredit Karma · 2019

Built for fun

Hobby projects I design and build on nights and weekends — for the joy of it, and shipped to production for real people to use.

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Experience

Across fintech, mobility, and healthtech — building front-of-stack systems and the teams around them.

Intuit (Credit Karma)
Staff Software Engineer
2019 → Now
7 years
Believe Labs
Founder & Engineer
2010 → 2019
9 years
Lyft
Senior Software Engineer
2016 → 2019
2.5 years
Spotfund
Full Stack Engineer
2017 → 2019
2 years

What people say

A few words from people I've built alongside — at Credit Karma, Lyft, and beyond.

Andrew. Just. Gets. Things. Done! If I was to start a new startup today, Andrew would be one of my first few hires at all cost.”
Will Chen
Will Chen
Director of Engineering · Credit Karma
Andrew is at his best with an ambiguous problem and no clear path — he investigates, narrows it down, and ships a solution without needing much supervision.”
Jeremy Unruh
Jeremy Unruh
Senior Director of Engineering · Credit Karma
He felt the platform’s pain points firsthand, and instead of just working around them, he took it upon himself to fix them.”
Orlando Valdez
Orlando Valdez
Senior Staff Software Engineer · Credit Karma
One of the most technically driven and thoughtful engineers I've encountered. He led extremely technical projects that made an impact well beyond our organization.”
Jack Eisenberg
Jack Eisenberg
Senior Engineering Manager · Credit Karma
Read all 30 recommendations

Writing

Occasional notes on building — AI tooling, developer experience, and the odd deep dive.

The RAG bot that actually reads our docsSep 2026
Fourteen years of Spotify on one page, parsed in your browserSep 2026
Affinity has no API, so Claude lays out the cookbook from codeSep 2026

Lately

  1. Nov 13

    Release Wave's shop is open. Merch is for sale, and refunds are sorted so a returned order doesn't turn into a mess for me. Next I'm working on reels built from a release's fans-of tags. Read more →

    Release Wave ↗release-waveshipping
  2. Nov 13

    Ago has a real home now. The site shows the actual Mac and iPhone app searching a pretend inbox, so you can see how it works before you install anything.

    Ago ↗agowebshipping
  3. Nov 12

    Ago now has a real home on the web and an iPhone app that keeps its own copy of your messages. I can also start Ago work from my phone and it runs on the other Mac.

    Ago ↗agoai-agents
Read the blogAll notes

Let's connect

Available for contract work

Have a project in mind?

Tell me what you're building. I'm available for contract work — hourly, fractional, or a full project build.

Next opening Mon, Nov 16 · 9:30 AM PST

Prefer to grab time directly? Pick a slot — otherwise send a note and I'll reply within 1–2 days.

hello@andrewmart.in LinkedIn GitHub
Replies within 1–2 days.