Destava

Software Engineer, Payments Infrastructure

Sierra is hiring for Software Engineer, Payments Infrastructure in San Francisco, CA. Mid level. First seen October 22, 2026, posted 3 times; open as of November 12, 2026. Jobs taken straight from company career pages — no aggregator in between.

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Company
Sierra
Where
San Francisco, CA
Level
Mid
First seen
October 22, 2026
Postings
3
Listed via
Ashby

What the posting says

WHAT YOU'LL DO The agent must collect and use a card number but can never see it. This work sits across four hard technical domains: payments, security, real-time voice, and LLMs. Voice is the core challenge. A caller speaks or types a card number in a live, low-latency audio stream, and the digits must never reach the model, while the model stays on the call. Sierra owns every system that touches card data, and one small team owns it end to end across three workstreams: Platform, Product, and Safety & Integrity. Customers keep their own telephony and payment gateways. Payments is live in…

Read more and apply on Sierra's site

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