Microsoft

Principal Software Engineer - CoreAI

United States, Washington, Redmond
Salary
$142,800 - $274,800 per year
Level
Principal
Work type
On-site · Washington

Not stated in the posting: visa.

Open. First seen 31 October 2026.

Apply on apply.careers.microsoft.com →

About the role

Overview Do you want to build the AI platform that trains the world’s most advanced models? Join CoreAI, where we’re building next-generation systems for large‑scale reinforcement learning. Our platforms power the full lifecycle of cutting‑edge LLMs – from rapid experimentation…

Read the full posting on apply.careers.microsoft.com

What this role asks for

Particular to this role

Generative AI · LLM

Rare in Microsoft's other 299 open postings.

Standard for software engineering roles

Python

Common in software engineering postings at any company.

Compared with Microsoft's other open jobs.

The team: Software Engineering HIRES STEADILY

This role is one of 304 open in Software Engineering. 200 were posted in the last 30 days and the oldest in January: a team that hires all year rather than one being built.

WHAT THE TEAM WORKS WITH, ACROSS ITS POSTINGS

C++ (280 of 304), Python (277 of 304), C# (273 of 304), Java (264 of 304), C (262 of 304), JavaScript (248 of 304), Azure (180 of 304)

OTHER ROLES ON THIS TEAM

From the team and dates on Microsoft's own job board.

Other openings for this role

2 open postings for this role in United States, Washington, Redmond, first posted 28 October 2026. The company is likely hiring for more than one position. None has been taken down and posted again.

See Software Engineer salaries in the United States →

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