Sr. Applied Scientist, AI Evaluation & Quality Systems

Apple Inc.; Seattle (WA); On-site; USD 142,000 - 263,000; Full time

Benefits offered by this job

Apple Benefits

Relocation assistance

Employee stock purchase plan

Tuition reimbursement

Discretionary bonuses

Job summary

Apple Inc. in Seattle, WA is seeking a Senior Applied Scientist to advance AI evaluation and quality systems. You will design scalable ground-truth pipelines and real-time monitors, calibrate evaluators against human gold sets, and surface root-cause analysis to improve AI judgments.

Collaboration with ML teams and annotators ensures practical, trustworthy results. The role emphasizes fluency in research and engineering, with strong Python skills and production experience building LLM-based

Qualifications

• 5+ years of industry experience in applied science or machine learning with production-grade evaluation pipelines.
• Hands-on experience designing ground-truth generation pipelines across varied tasks and modalities.
• Experience building real-time monitoring or anomaly detection systems for live data.
• Knowledge of evaluation methodology for generative AI including LLM-as-a-judge design and calibration techniques.
• Strong software engineering fundamentals and Python ML frameworks with production experience building monitoring pipelines.
• Ability to work with downstream users and communicate findings clearly to technical and non-technical audiences.
• MS or PhD in Computer Science, ML, Statistics, or related field, or equivalent practical experience.

Responsibilities

• Design and implement scalable ground truth generation pipelines across varied task types and modalities.
• Build and maintain real-time monitoring systems that detect drift and quality degradation in live evaluation pipelines.
• Design calibration frameworks to anchor LLM evaluators against gold sets.
• Develop root-cause analysis tooling to surface disagreement patterns between automated and human judgments.
• Collaborate with ML teams, evaluator developers, and annotators to ground design decisions in feedback.
• Communicate findings and recommendations clearly to stakeholders.

Skills

5+ years experience

Real-time monitoring

Python & ML frameworks

LLM evaluation design

Stakeholder communication

Education

MS or PhD in Computer Science/ML/Statistics

Equivalent practical experience

Tools

Python

ML frameworks

Production pipelines

Job description

Sr. Applied Scientist, AI Evaluation & Quality Systems

Seattle, Washington, United States Machine Learning and AI

Apple Services Engineering (ASE) powers the AI and LLM features behind experiences that hundreds of millions of users love every day. As these systems increasingly rely on human-in-the-loop evaluation, the quality of our products is directly constrained by the quality of our evaluation systems. We believe that to build exceptional AI, you need exceptional mechanisms to validate the signals used to train and evaluate them.

Description

The Human-centered AI, ML Data Quality Operations team is looking for a Senior Applied Scientist to join our growing team. We are building the systems and methodologies that make AI evaluation trustworthy, and scalable — directly shaping how Apple develops and validates AI across products and services. In this role, you will develop novel, scalable quality control solutions, working closely with cross-functional teams to ensure the data powering our AI/ML systems meets the highest standards of accuracy, consistency, and relevance. Your work will span the full lifecycle of quality assurance for AI and human judgments — from real-time validation and human-verified ground truth generation, to root-cause analysis that turns disagreements into corrective action. This role demands fluency across research thinking and engineering execution — you will prototype, validate, and ship. A strong point of view on when not to use a model or agent is as valued here as the ability to build one.

Responsibilities

• Design and implement scalable ground truth generation pipelines across varied task types, annotation modalities, and cold start conditions
• Build and maintain real-time monitoring systems that detect drift, distribution shifts, and quality degradation as they emerge across live evaluation and annotation pipelines.
• Design calibration frameworks that periodically re-anchor LLM evaluators against human-verified gold sets, correcting drift before it compounds.
• Build root-cause analysis tooling that surfaces disagreement patterns between automated and human judgments, and feeds findings directly into annotator training and guideline refinement.
• Partner closely with downstream users of these systems —ML teams, LLM-as-a-Judge (evaluator) developers, annotators — to ground design decisions in real feedback and usage patterns, not just architecture.
• Communicate findings and recommendations clearly to both technical and non-technical stakeholders

Minimum Qualifications

• 5+ years of industry experience in applied science or machine learning, with demonstrated experience building or operating production-grade evaluation, annotation, or quality-assurance pipelines.
• Hands-on experience designing ground truth generation pipelines across varied task types and annotation modalities, including cold-start scenarios with limited existing data.
• Experience building real-time monitoring or anomaly/drift detection systems for live data or ML pipelines.
• Working knowledge of evaluation methodology for generative AI — including LLM-as-a-judge design, meta-evaluation, failure mode analysis, and calibration/reference-guided grading techniques
• Strong software engineering fundamentals and proficiency in Python and relevant ML frameworks, with production experience building, deploying, and monitoring LLM-based pipelines and agents.
• Demonstrated ability to work directly with downstream users/stakeholders to incorporate feedback into system design, and to communicate findings clearly to both technical and non-technical audiences.
• MS or PhD in Computer Science, Machine Learning, Statistics, or a related quantitative field, or equivalent practical experience.

Preferred Qualifications

• PhD in Computer Science, Machine Learning, Statistics, or a related field
• Experience in designing systems or tooling that are configurable and extensible by practitioners who did not build them
• Strong communication skills with the ability to influence technical direction across cross-functional teams
• Demonstrated passion for leveraging AI to improve work efficiency and scale

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 $142,300 and $263,300, 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

At Apple, we believe accessibility is a fundamental human right. You’ll find that idea reflected in everything here — in our culture, our benefits and our digital tools. By welcoming as many perspectives as possible, we help you build a career where you feel like you belong.

Learn about accessibility in Apple’s workplace

Learn about reasonable accommodations for job applicants

Apple accepts applications to this posting on an ongoing basis.