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Member of Technical Staff, Principal Mobile Engineer

Microsoft

Microsoft

IT
London, UK
Posted on Jan 24, 2026
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Overview
Microsoft AI is looking for a talented Mobile Engineer (iOS or Android) to help build the next wave of capabilities for Copilot, our personalized AI assistant. We are seeking someone who brings strong technical craftsmanship alongside positive energy, empathy, and kindness, and who enjoys building world‑class consumer experiences in a fast‑paced environment. The Native Engineering team leads and builds the core Copilot experience across iOS and Android, working closely with Product Management, Design, and AI Research teams.
Microsoft AI is dedicated to advancing Copilot and other consumer AI products and research. The organization spans Copilot, Bing, Edge, and generative AI research, and is shaping the future of personal computing. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. We operate with a growth mindset and build on our values of respect, integrity, and accountability, creating a culture of inclusion where everyone can thrive.
Starting January 26, 2026, MAI employees are expected to work from a designated Microsoft office at least four days per week, if they live within 50 miles (U.S.) or 25 miles (non‑U.S.) of that location. Expectations are subject to local law and may vary by jurisdiction.

Responsibilities
  • Care deeply about building outstanding, consumer‑grade mobile applications
  • Build and ship high‑quality iOS or Android applications for Copilot
  • Write well‑tested, secure, maintainable code with strong engineering fundamentals
  • Partner closely with Designers, Product Managers, and AI Researchers to turn ambiguous ideas into polished user experiences
  • Navigate ambiguity and roadblocks to deliver value to users quickly and iteratively
  • Thrive in a fast‑paced, design‑driven product development cycle
  • Embody Microsoft’s Culture and Values

Required Qualifications

  • Bachelor’s Degree in Computer Science or a related technical field or similar experience building mobile applications
  • Strong coding experience in one or more of:
    • iOS: Swift, Objective‑C
    • Android: Kotlin, Java
  • Experience shipping production mobile apps used by customers
Preferred Experience
  • Advanced degree or equivalent senior‑level industry experience
  • Experience building mobile applications from scratch
  • Strong understanding of mobile architecture, design patterns, and UI/UX principles
  • Contributions to open‑source projects
  • Excellent written and verbal communication skills; proven ability to work cross‑functionally
  • Passion for learning and staying current with mobile development, AI, and emerging technologies
  • Demonstrated ability to contribute to a positive, inclusive engineering culture

This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.



Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

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