AtoB

Senior Software Engineer, Payments

AtoB
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1 year ago
Montréal, Canada or San Francisco, CA, USASenior
H1B sponsor

Base Salary

$150k - $190k/yr

Responsibilities

  • Lead reconciliation of transactions across Stripe, Highnote, Checkbook, and JPMorgan.
  • Ensure internal records and customer-facing balances remain fully aligned.
  • Develop and scale general ledger infrastructure for accuracy, resilience, and growth.
  • Partner with Fragment to build a reliable ledger system capable of supporting billions of transactions.
  • Design and implement money movement flows across payment rails including push-to-card and wire transfers.
  • Own backend and platform projects end-to-end from design through production operations.
  • Drive architecture that scales to billions in annual payment volume and supports real-time risk controls.
  • Collaborate with product and go-to-market leads to turn ambiguous problems into production code.

Requirements

  • At least 5 years of professional experience building B2B or B2C SaaS products.
  • Fintech, payments, or marketplace experience is a plus, with prior payments or back-office fintech experience preferred.
  • Ability to work effectively in a high-ownership, low-bureaucracy environment while balancing speed with rigor.
  • Experience with automated tests, clean abstractions, and clear documentation.
  • Ability to dive deeply into code and learn new tools quickly; the team uses React, Ruby, and Postgres.
  • Strong communication skills across time zones.
  • Ability to work in the office four days per week, Monday through Thursday, in the San Francisco Bay Area or Montreal.

Benefits

  • Work in the San Francisco Bay Area or Montreal office four days per week, Monday through Thursday.

Tech Stack

Categories

AtoB

About AtoB

51-200 employees

AtoB builds payments infrastructure for trucking and logistics fleets, including fuel and fleet payment cards with spend controls, fraud prevention, and software for drivers and fleet managers. The company earns revenue from payment card usage and related fees and serves U.S. transportation businesses that need to manage fuel and operating expenses and pay vendors. Founded in 2019 and headquartered in San Francisco, it is privately held.

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