JobsPrincipal Software Engineer - CoreAI
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Principal Software Engineer - CoreAI

Microsoft

Location

Redmond, WA

Type

Full-time

Posted

9/9/2026

Compensation

$142,800 - $304,200 per year

Undergraduate with 5+ Years of Experience
H-1B FY202696.0% approval-64% YoY
👑 Elite sponsor

Job description

The role involves building and evolving distributed services for large-scale reinforcement learning at CoreAI. The team focuses on enhancing the performance and reliability of AI platforms that support advanced models. You will play a crucial role in optimizing workflows and debugging complex interactions between models and hardware. The position emphasizes collaboration and innovation in AI infrastructure and compute orchestration.

Requirements

  • Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including C, C++, C#, Python, or Java, OR equivalent experience.
  • Ability to meet Microsoft, customer and/or government security screening requirements.

Responsibilities

  • Build and evolve distributed services that underpin massive training runs.
  • Improve iteration loops for researchers and engineers.
  • Debug complex interactions between models and hardware.
  • Apply advanced performance optimization techniques that directly impact product quality and operational excellence.
  • Develop deep expertise in ML systems, AI infrastructure, and compute orchestration.
  • Ship platform capabilities that enable mission-critical AI workloads for customers around the world.

Benefits

  • Employees at Microsoft are often offered comprehensive, “world-class” benefits—including health and mental-wellness programs, competitive pay with bonuses and stock awards, and retirement/savings options. Time-off and flexibility are common, with generous vacation and holidays, parental and caregiver leave, and flexible work schedules, alongside learning support, employee resource groups, product discounts, and matching-gifts/volunteering programs. Specific benefits can vary by region.

H-1B filing history

Public USCIS petition and DOL LCA counts · latest USCIS FY2026, LCA FY2026

Filing entity: Microsoft Corporation

As of Aug 23, 2026

Initial approvals

503

FY2026

Approval rate

96.0%

FY2026

LCA certified

3,062

FY2026

Entry-level share

5.7%

FY2026

Initial approvals YoY

-64%

Trend

LCA certified YoY

-83%

Trend

Initial approvals by fiscal year

Approval rate by fiscal year

Continuing vs initial approvals

LCA certified positions by quarter

LCA certified positions by fiscal year

Based on public USCIS and DOL filings; not a sponsorship guarantee.

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