Senior/Staff Software Engineer, Product

IDN Recruitment•San Francisco, CA

18h•Onsite

About The Position

Our client is one of the fastest growing fintechs in the world and we power over ten billion dollars a year in business purchasing across numerous industries. Company believes businesses deserve financial infrastructure tailored to how they actually operate. That's why we're creating a new category of business banking. We combine the reliability of traditional banking (high yields, competitive rewards, and comprehensive security) with industry-specific features that make businesses more efficient, more competitive, and more profitable. We’re looking for a Software Engineer to help build and evolve our core banking product that powers $10b in transaction volume a year. This role blends infrastructure-level thinking with deep product intuition. You’ll build fault-tolerant, user-facing financial primitives that spans across all customers, and you’ll do it fast, cleanly, and with ownership.

Requirements

2–15 years of experience as an exceptional IC (individual contributor) building complex products end-to-end.
Ownership Mentality: ability to own and ship entire product surfaces end-to-end — from database schema and API design to the product customers interact with daily.
Financial Systems Expertise: experience building and scaling financial infrastructure — payments, transfers, invoicing, bill pay, onboarding, and card management systems.
Data & Backend Skills: ability to design data models, write migrations, and build backend services powering complex multi-step financial operations.
Cross-team Collaboration: willingness to work directly with product, design, and compliance to ship features that are correct, compliant, and genuinely good to use.
Tech Stack: TypeScript, PostgreSQL, Temporal, React, Tailwind, Next.js.

Responsibilities

Own and ship entire product surfaces end-to-end, from database schema and API design to building the product customers interact with daily
Build and scale our core financial infrastructure: payments, transfers, invoicing, bill pay, onboarding, and card management systems that move tens of billions of dollars a year
Design data models, write migrations, and build the backend services that power complex multi-step financial operations
Work directly with product, design, and compliance to ship features that are correct, compliant, and actually good to use — in financial software, the details are the product
Shape engineering standards, contribute to arch