# Backend Software Engineer

> Raydar · San Francisco, United States · Full-time · Posted 2026-11-04

**Salary:** USD 185,000–360,000

**Workplace:** on_site

## Description

About the company

Our client is a financial services company.

The role

Raydar is recruiting for this role on behalf of our client. Design and build backend services for transaction processing and financial record-keeping, owning systems from architecture through production support. The work spans checkout flows, access controls, risk checks and reconciliation, with a focus on correctness and reliability.

What you'll do

\- Develop order-processing paths that carry a customer's request through to final confirmation across browser-based, protocol-based and direct API channels.

\- Design secure credential storage and access boundaries so sensitive data is never exposed to downstream callers.

\- Build permission, budget and approval logic, along with the user-facing tools used to configure and review it.

\- Build risk detection systems for account compromise and fraudulent counterparties.

\- Own reconciliation and ledger accuracy at high volume, including resolving ambiguous transaction outcomes such as timeouts.

## Requirements

What we're looking for

\- 3+ years of engineering experience at large-scale technology companies or a chartered bank or chartered trust, with a clear interest in joining a small, young company.

\- Has built a payment processor directly, not only integrated a third-party one.

\- Track record of running live backend systems independently from design through operation, including being on the hook for incidents.

\- Background in platform or infrastructure work, such as developer tools, distributed systems or payment integrations at fintech companies.

\- Designs for failure from the start, including timeouts, retries, idempotency and backpressure.

\- Working knowledge of TypeScript and Node.js.

\- Able to work on-site five days a week in San Francisco and uses AI tools day to day.

Bonus points

\- Prior work on card programs, payment card data security compliance, metered billing, fraud screening, or gateway and request-routing layers.

## Benefits

Compensation and benefits

\- Base salary: $185K to $360K

Location and work model

\- San Francisco Bay Area, CA, United States

\- On-site, 5 days a week in the office

\- Full-time

## Apply

[Apply at Raydar](https://apply.workable.com/raydar/j/33D51369ED/apply)

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