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Siri NL Platform Software Engineer, Siri Core Modeling

Apple

Apple

Software Engineering
Cupertino, CA, USA
USD 181,100-318,400 / year + Equity
Posted on Feb 24, 2026
Apply now
The Siri NL Platform team bridges ML research and user-facing experiences, integrating large language models into Siri across all Apple devices. We partner with modeling teams, hardware teams, and leadership to shape what Siri can become.
We're looking for a software engineer to work on Siri's on-device runtime across iOS, macOS, tvOS, watchOS, and visionOS. You'll build performant client software under tight constraints, work across teams throughout Apple, and help guide technical decisions that reach millions of users.
  • Design, develop, test, and maintain Siri's on-device runtime platform across Apple's operating systems
  • Integrate large language models into client experiences with a focus on performance and efficiency
  • Collaborate with modeling teams to ensure successful LLM integration on-device
  • Partner with hardware teams to bring new Siri experiences to new product lines
  • Work cross-functionally with teams across Apple and communicate progress to leadership
  • Build tooling and infrastructure to improve team productivity and developer experience
  • Mentor team members and lead projects from conception through delivery
  • Strong programming skills in one or more compiled languages (Swift, C++ or Objective-C).
  • Python scripting skills for tooling and automation
  • Solid understanding of computer science fundamentals
  • Ability to quickly learn new technologies and adapt to evolving requirements
  • Excellent communication skills and ability to collaborate across teams
  • M.S. or B.S. in Computer Science, Machine Learning, or related field (or equivalent experience)
  • Experience with on-device development and performance optimization for resource-constrained environments
  • Familiarity with large language models and on-device ML inference
  • Experience with AI-assisted development workflows, including coding agents or standards like the Model Context Protocol (MCP)
  • Track record of working cross-functionally and communicating with leadership
  • Self-starter capable of managing multiple projects with competing priorities
At Apple, base pay is one part of our total compensation package and is determined within a range. This provides the opportunity to progress as you grow and develop within a role. The base pay range for this role is between $181,100 and $318,400, and your base pay will depend on your skills, qualifications, experience, and location.

Apple employees also have the opportunity to become an Apple shareholder through participation in Apple’s discretionary employee stock programs. Apple employees are eligible for discretionary restricted stock unit awards, and can purchase Apple stock at a discount if voluntarily participating in Apple’s Employee Stock Purchase Plan. You’ll also receive benefits including: Comprehensive medical and dental coverage, retirement benefits, a range of discounted products and free services, and for formal education related to advancing your career at Apple, reimbursement for certain educational expenses — including tuition. Additionally, this role might be eligible for discretionary bonuses or commission payments as well as relocation. Learn more about Apple Benefits.

Note: Apple benefit, compensation and employee stock programs are subject to eligibility requirements and other terms of the applicable plan or program.

Apple is an equal opportunity employer that is committed to inclusion and diversity. We seek to promote equal opportunity for all applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, Veteran status, or other legally protected characteristics. Learn more about your EEO rights as an applicant.

Apple accepts applications to this posting on an ongoing basis.

Apply now
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