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Come build with us!

Law is changing fast - join us on the journey to build an OS for the law firm of the future.

We're growing faster than we can handle. Every day, 5+ users tell us the app has changed their life. We work hard, we learn from each other, and we have fun doing it.

If that sounds fun, come join us!

See our open roles

See our open roles

“I’m leaving my husband for Ajax.”

Siyou Pei

Product Engineer · Joined July 2025

“I’m leaving my husband for Ajax.”

Siyou Pei

Product Engineer · Joined July 2025

“I’m leaving my husband for Ajax.”

Siyou Pei

Product Engineer · Joined July 2025

Lawyers track their time in 6 minute increments. Lost time costs them $100B/year.

Jack and Alex dig themselves into the first of many holes

Jack and Alex dig themselves into the first of many holes

Jack & Alex

Ajax was founded by two brothers, Jack and Alex, who grew up surrounded by lawyers. Both of their parents were lawyers, as were many of their parents’ closest friends. When they first told their dad the about the idea for Ajax, he immediately remembered the exact matter codes he had billed to in his first law job over 30 years ago - a pretty clear sign that timekeeping sticks with you.

Starting Ajax

Before starting the business, they interviewed 150 lawyers in a month to make sure they had strong conviction that time tracking is insanely painful and hard to automate - a good space to solve problems.

Where we're at now!

Today, Ajax uses AI to automate timekeeping and make lawyers’ days suck less. Soon, we’ll use Ajax data to automate reporting, manage profitability, win clients, and more.

These are a few things we’re proud of

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Of firms that pilot convert into paying customers

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Customers expressed their love. i.e. "I'm leaving my husband for Ajax"

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Customers have angel-invested after trying the product

We’re a tight, fast-moving team that strives to be the most customer-obsessed startup in the world.

Alex Weinberger

Co-Founder, Product & Eng

Jack Weinberger

Co-Founder, GTM

Jack Weinberger

Co-Founder, GTM

Roger Jin

Founding ML Engineer

Siyou Pei, PHD

Founding Product Engineer

Branko Mravic

Founding Account Executive

Sophia Fein

Founding Customer Activation

Sophia Fein

Founding Customer Activation

Tyler Argov

Founding Customer Activation

Tyler Argov

Founding Customer Activation

Nat Fernelius

Software Engineer

Andrew Sheeler

Software Engineer

  • Roger slept late and rushed to join standup. His hair could have lit up the empire state building.

  • Siyou’s fastest sunglasses.

  • Jack, Alex, and Roger in our first office.

  • Siyou and scout at Alex & Jack’s family thanskgiving eve party. Scout is 1/2 of Ajax’s legal name: Napoleonscout, in. Just out of frame is napoleon, the shiny brown lab

  • Roger slept late and rushed to join standup. His hair could have lit up the empire state building.

  • Siyou’s fastest sunglasses.

  • Jack, Alex, and Roger in our first office.

  • Siyou and scout at Alex & Jack’s family thanskgiving eve party. Scout is 1/2 of Ajax’s legal name: Napoleonscout, in. Just out of frame is napoleon, the shiny brown lab

CAREERS

Check out some exciting opportunities.

  • role

    work time

    location

  • Founding Full Stack Engineer

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Full Stack Engineer

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Full Stack Engineer

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Sales Development Rep

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Sales Development Rep

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Sales Development Rep

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Customer Activation

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Customer Activation

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Customer Activation

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Account Executive

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Account Executive

    Full Time

    In person in NYC

    Apply

    Apply

  • Founding Account Executive

    Full Time

    In person in NYC

    Apply

    Apply

  • Don't see a role that fits? We're always looking for exceptional people. Send us a note at careers@joinajax.com

Join us today.

Apply now

Apply now

Join us today.

Apply now

Apply now

Join us today.

Apply now

Apply now