JobsMember of Technical Staff, Principal Full Stack Engineer - Copilot Applications
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Member of Technical Staff, Principal Full Stack Engineer - Copilot Applications

Microsoft

Location

Mountain View, CA

Type

Full-time

Posted

5/5/2026

Compensation

$139,900 - $331,200 per year

Undergraduate with 5+ Years of Experience
Approval 98.4%·Filings 6,363·New hires 3,142·
👑 Elite Sponsor
·FY 2025

Job description

This role involves building revolutionary experiences at the intersection of modality and intelligence within a team focused on human-AI interaction. The team aims to create seamless and engaging AI companions that enhance user experiences across various modalities. Candidates will work on complex problems that require innovative solutions and collaboration with applied AI researchers. The position is fast-paced and requires a willingness to navigate ambiguity while delivering impactful results.

Requirements

  • Bachelor's Degree in Computer Science or related technical field and 6+ years of technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python, or equivalent experience.
  • Master's Degree in Computer Science or related technical field and 8+ years of technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python, or Bachelor's Degree in Computer Science or related technical field and 12+ years of technical engineering experience with coding in languages including C, C++, C#, Java, JavaScript, or Python, or equivalent experience.
  • Strong full-stack fundamentals across frontend (React, TypeScript) and backend systems.
  • Proficiency in Python or similar languages for backend development.
  • Experience building scalable web APIs and services.
  • Comfort with ambiguity and the ability to move fast in loosely-defined problem spaces.
  • Taste for great product experiences and a drive to ship work that matters.

Responsibilities

  • Create breakthrough experiences that redefine what an AI companion can do.
  • Build across modalities—voice, vision, text, and action—to make Copilot feel seamless and alive.
  • Own features end-to-end, from concept through production, at scale.
  • Collaborate with applied AI researchers to bring cutting-edge model capabilities to users.
  • Ship experiments rapidly, learn from usage, and iterate toward experiences that feel like magic.
  • Work across team boundaries on problems that span the entire product.

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.

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