Senior Software Engineer, Payments
Our mission The trucking and logistics industry provides the backbone of the economy. But the payments infrastructure on which it runs is broken.
What this role actually needs.
Senior Software Engineer, Payments at AtoB in San Francisco. UpJobz keeps this listing high-signal for applicants targeting serious high-tech roles across the United States, Canada, and Mexico. Our mission The trucking and logistics industry provides the backbone of the economy. But the payments infrastructure on which it runs is broken.
Day-to-day expectations
A clear list of the work this role is designed to cover.
- Lead efforts to reconcile transactions across multiple financial providers, including Stripe, Highnote, Checkbook, and JPMorgan, ensuring accuracy and consistency across systems.
- Ensure full alignment between internal records and customer-facing balances—what’s in the bank should precisely match what the customer sees.
- Contribute to the development and ongoing scalability of our general ledger infrastructure, supporting accuracy, resilience, and growth.
- Partner with our external ledger provider, Fragment, to build a reliable system capable of powering billions of transactions with speed and integrity.
- Design and implement new money movement flows across a variety of payment rails—including push-to-card and wire transfers—optimizing for cost, speed, and reliability.
- Own critical backend & platform projects end-to-end—from design to production ops.
What a strong candidate brings
This keeps the job page specific, readable, and easier to match.
- Have 5+ years of professional experience building B2B or B2C SaaS products (FinTech, payments, or marketplace a plus).
- Prior payments or back office fintech experience is 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.
Why people would want this job
Benefits help searchers understand whether the role is a real fit before they apply.
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Next moves
- Tailor your resume around llm and react instead of sending a generic application.
- Use the first two bullets of your application to connect your background directly to senior software engineer, payments is a high-signal hybrid role in san francisco, and it is most realistic for united states residents.
- Open the role quickly if it fits and bookmark three similar jobs before you leave the page.
Interview themes
Watchouts
- $150K - $190K is visible, so calibrate your application around the posted range.
- Use united states residents as part of your positioning so the recruiter does not have to infer it.
- Show concrete examples of succeeding in hybrid environments.
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