Senior Software Engineer, Payments

AtoB

$120K — $180K *
Finance & Insurance
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • 5+ years of professional experience building B2B or B2C SaaS products, ideally with FinTech, payments, or marketplace experience.
  • Comfortable in a zero-bureaucracy, high-ownership work environment.
  • Skilled in balancing speed with rigor through automated testing, clean abstractions, and clear documentation.
  • Proficient in diving deep into code with familiarity in React, Ruby, and Postgres (with a quick learning aptitude for new tools).
  • Effective communicator across different time zones.
  • Availability to work in-office 4 days a week in a designated location (Bay Area, New York, Los Angeles, Montreal, Vancouver, or Toronto).

Responsibilities

  • Lead and participate in large, ambiguous technical projects from concept to scale.
  • Design, build, and maintain APIs, user experiences, services, and systems.
  • Make tradeoffs between business priorities, user experience, and system reliability.
  • Own end-to-end delivery of critical frontend, backend, and platform projects.
  • Architect scalable solutions to support billions in annual payment volume and real-time risk controls.
  • Collaborate closely with product and go-to-market teams to turn vague challenges into elegant code.
Full Job Description
Our mission

The trucking and logistics industry provides the backbone of the economy. But the payments infrastructure on which it runs is broken. For the hard-working men and women of this sector, the existing suite of payment tools is outdated, difficult to use, prone to fraud, and saddled with shady fee structures. The incumbent players in this space often overlook the economic and practical needs of this user base.

We're changing that. AtoB is building Stripe for Transportation - modernizing the payments infrastructure for trucking and logistics. Supply chains rely on the timely movement of capital to function efficiently. Our end game is a world in which that capital movement occurs fairly, smoothly, and without delay. As we pursue that end game, we aim to center our customers in every way - offering them world-class customer experience and building products that work with and around the unique constraints of their daily lives. We build for fleet managers in the office and drivers on the road. We strive for products that are efficient, satisfying, and useful. Our customers enable our modern economy - they deserve it.

Our history and background

Our founding team has backgrounds in payments, working on autonomous vehicles at Cruise Automation, leading ops and growth for Uber, and building apps that were featured on the Apple app store. We have staff and senior engineers from Google, Uber, Meta, Shopify, Stripe, Chime, and other leading technology companies.

We have raised $125 million+ from investors such as General Catalyst, Elad Gil, Bloomberg Beta, Y Combinator, XYZ; founders and CEOs of companies such as Google (Eric Schmidt), Salesforce (Marc Benioff), Coinbase (Brian Armstrong), DoorDash (Tony Xu), Instacart, Gusto; strategic investors like Mastercard, Flexport and Samsara.

We were named to Forbes annual Next Billion-Dollar Startup List, and have just recently been selected to join the World Economic Forum as a Global Innovator.

About Us

Learn more about our mission, culture, and background on our Careers Page.

Responsibilities:
  • Lead and participate in large, often ambiguous technical projects, laying the groundwork for early-stage products to iteratively evolve and scale.
  • Design, build, and maintain APIs, user-facing experiences, services, and systems.
  • Make effective tradeoffs between business priorities, user experience, and reliability.
  • Own critical frontend, backend & platform projects end-to-end-from design to production ops.
  • Push architecture that scales to billions in annual payment volume and real-time risk controls.
  • Work closely with product and GTM leads to turn ambiguous problems into elegant code.


Qualifications:
  • Have 5+ years of professional experience building B2B or B2C SaaS products (FinTech, payments, or marketplace a plus).
  • Thrive in zero-bureaucracy, high-ownership environments.
  • Balance speed with rigor-automated tests, clean abstractions, clear docs.
  • Can dive deep into code (we use React, Ruby, Postgres-but great engineers pick up tools fast).
  • Communicate crisply across time zones.
  • This role is required to be in office 4 days/week (Mon-Thurs) either in San Francisco Bay Area, New York, Los Angeles, Montreal, Vancouver, Toronto

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