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Indexed directly from employers. Every age is their own publish date.

fable12 is not a job board. It is a record of how long each listing has actually been open, read straight from employers’ own hiring systems. Listings link to the employer; ages are the employer’s own publish date — how we know.

Not affiliated with any company listed. Boards last swept 23 Aug, 22:51 UTC.

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Jobs

Indexed directly from employers. Every age is their own publish date.

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Under a week3 1–4 weeks5 1–2 months5 2–12 months12 Over a year1

2,213 postings mention “Software Engineer - Operating Systems” in the description

3 roles

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3d
Senior Data and Operations Software Engineer
Commonwealth Fusion SystemsEngineeringDevens, MAHybrid
Apply Senior Data and Operations Software Engineer at Commonwealth Fusion Systems — opens Commonwealth Fusion Systems’s own board
6d
Senior Staff AI-Native Software Engineer – Agentic Systems
ServiceNowEngineering, Infrastructure and OperationsSanta Clara, CALIFORNIA
Apply Senior Staff AI-Native Software Engineer – Agentic Systems at ServiceNow — opens ServiceNow’s own board
6d
Security Software Development Manager, Operational Research, AWS Security
AmazonSystems, Quality, & Security EngineeringCourbevoie, Ile-de-France
Apply Security Software Development Manager, Operational Research, AWS Security at Amazon — opens Amazon’s own board