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Mercury

Senior Software Engineer - Mercury Command

Location
San Francisco, CA, New York, NY, Portland, OR, or Remote within Canada or United States (United States)
Workplace
Remote
Level
Senior
Team
Engineering
Salary
USD 200,700 – 250,900
Posted
2026-02-13 (8mo ago)
Source
Mercury's career page (Greenhouse)
Last checked
2026-11-10 (2h ago)

About the role

In 1965, an engineer in Scotland was given a mundane task with a tricky problem to it - banks wanted to close on Saturdays and still serve customers, but they didn’t know how to solve the authentication of the right user. James Goodfellow, working at Smiths Industries, uncovered the insights that you needed something you have (a card) and something you know (a PIN). Because someone told him they could only remember 4 digits instead of his proposed 6, today over 3 million ATMs use a card+4 digit PIN over 60 years later.…

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