Senior Applied Scientist, Amazon Global Data Center Ops Central Insight and Analytics Team Amazon.com IncSenior Applied Scientist, Amazon Global Data Center Ops Central Insight and Analytics TeamSeattle, WACausal inference & root cause analysis: Build models that decompose fleet-wide metric movements into root causes, distinguishing correlation from causation across operational dimensions (site, service, failure mode, time). Anomaly detection & trend identification: Develop multi-variate anomaly detection that distinguishes signal from noise in noisy operational data, and identifies emerging patterns before they become crises.
Scientist/Senior Scientist, Protein Engineering SystImmune, Inc.Scientist/Senior Scientist, Protein EngineeringRedmond, WA$90,000–$130,000 / yearIt specializes in developing innovative cancer treatments using its established drug development platforms, focusing on bi-specific, multi-specific antibodies, and antibody-drug conjugates (ADCs). Design novel platforms for faster evaluation and screening of immune-based repertoires from immunized animal sources or display methods for use in both discovery and protein engineering campaigns.
Scientist/Senior Scientist, Protein Engineering Systimmune IncScientist/Senior Scientist, Protein EngineeringRedmond, WA$90,000–$130,000 / yearIt specializes in developing innovative cancer treatments using its established drug development platforms, focusing on bi-specific, multi-specific antibodies, and antibody-drug conjugates (ADCs). Design novel platforms for faster evaluation and screening of immune-based repertoires from immunized animal sources or display methods for use in both discovery and protein engineering campaigns.
Applied Scientist III: 26-01616 Akraya Inc.Applied Scientist III: 26-01616Seattle, WA$70–$74.28 / hourMost recently, we were recognized Stevie Employer of the Year 2025, SIA Best Staffing Firm to work for 2025, Inc 5000 Best Workspaces in US (2025 & 2024) and Glassdoor's Best Places to Work (2023 & 2022)! You will leverage your expertise in causal inference and experimentation to design and analyze marketing campaigns, optimize budget allocation, and inform customer acquisition and retention strategies.
Staff Machine Learning Scientist, Applied Causal Inference DoorDash IncStaff Machine Learning Scientist, Applied Causal InferenceSeattle, WA$203,500–$299,300 / yearWe value a diverse workforce - people who identify as women, non-binary or gender non-conforming, LGBTQIA+, American Indian or Native Alaskan, Black or African American, Hispanic or Latinx, Native Hawaiian or Other Pacific Islander, differently-abled, caretakers and parents, and veterans are strongly encouraged to apply. We are looking for someone who has built or deeply worked on production causal systems: uplift models, heterogeneous treatment effect models, surrogate metrics, experimentation platforms, counterfactual policy evaluation, promotion optimization, or marketplace decisioning systems.
Machine Learning Scientist III - Ads + Search & Recommendations WayfairMachine Learning Scientist III - Ads + Search & RecommendationsSeattle, WA$194,040–$206,167 / yearExperience deploying machine learning models in production environments, with a focus on cloud-based solutions such as GCP (BigQuery, GCS, Vertex AI, Composer), as well as workflow orchestration tools like Airflow, model tracking using MLflow, and containerization technologies like Docker. Candidate Generation/Retrieval: Selecting the right subset of products for our final scoring layers from our entire catalog efficiently through deep understanding of our product catalog and our customers at extreme scale using low latency situations across multiple types of Candidate Generators and Retrieval stages.
Research Scientist II ChewyResearch Scientist IIBellevue, WashingtonAs a Research Scientist on the Outbound Science & Technology team, you will design, develop, and deploy advanced optimization, simulation, and machine learning models that power Chewy’s outbound network. You will translate ambiguous business problems into structured mathematical models and scalable solutions that improve speed, cost efficiency, and service levels across our outbound operations.
Applied Scientist, Prime Video Science Amazon.com IncApplied Scientist, Prime Video ScienceSeattle, WAThe Prime Video Science team leverages the latest in machine learning and AI techniques combined with causal inference to bring scientific rigor to the biggest decisions in entertainment: what content to make, what to license, and where to invest. We pursue ambitious research at the intersection of machine learning, AI, and causal inference, turning that research into innovations that improve customer experience and strengthen business profitability.
Director, Data Science ChewyDirector, Data ScienceBellevue, WashingtonAdvance state-of-the-art applied science across the three pillars above: embeddings and representation learning, CTR/CVR prediction, multi-objective ranking, auction and bidding dynamics, budget optimization, ROAS optimization, causal measurement, and marketplace balance. You will lead a team of data scientists building the intelligence layer across the full advertising marketplace: (a) Supply-side algorithms — search, relevance, ranking, real-time bidding, bid-boosting, premium positioning, and dynamic auctions.
Associate Principal - Data Sciences LTM LtdAssociate Principal - Data SciencesBellevue, WA$105,430–$178,000 / yearWe are seeking a highly skilled and motivated Data Scientist to join our team As a Data Scientist you will be responsible for analyzing complex datasets building predictive models and deriving actionable insights to drive business decisions You will work on a variety of projects spanning machine learning deep learning natural language processing NLP and OpenAI implementation The ideal candidate must have strong proficiency in SQL and Python extensive experience in machine learning and deep learning techniques and a solid understanding of NLP concepts Experience with implementing solutions using OpenAI technologies is highly desirable. Together with over 87,000 employees across 40 countries and our global network of partners, LTM - a Larsen & Toubro company - owns business outcomes for our clients, helping them not just outperform the market, but to Outcreate it.
Manager, Data Science DoorDash IncManager, Data ScienceSeattle, WA$184,300–$271,000 / yearWe value a diverse workforce - people who identify as women, non-binary or gender non-conforming, LGBTQIA+, American Indian or Native Alaskan, Black or African American, Hispanic or Latinx, Native Hawaiian or Other Pacific Islander, differently-abled, caretakers and parents, and veterans are strongly encouraged to apply. At DoorDash, our mission to empower local economies shapes how our team members move quickly, learn, and reiterate in order to make impactful decisions that display empathy for our range of users-from Dashers to merchant partners to consumers.
AI Research Scientist Allen Institute for Brain ScienceAI Research ScientistSeattle, WA$146,600–$183,250 / yearRather than primarily applying established techniques, this role focuses on methodological innovation designing, testing, and refining new AI/ML models that operate across diverse and large-scale biological data, and translating complex scientific questions into computational frameworks. Working closely with scientists and engineers, the AI Research Scientist evaluates model performance, limitations, and scientific relevance, and contributes to the broader scientific community through publications, benchmarks, and reusable methods.
Senior Machine Learning Engineer Active Secret Clearance Striveworks IncSenior Machine Learning Engineer Active Secret ClearanceTacoma, WA$185,000–$230,000 / yearSince 2018, we have delivered the most trusted AI systems operating in real-world use cases-providing a layer of assurance underneath hundreds of deployed models that monitors performance, manages drift, and sustains systems long after they leave the lab. Working directly with customers, data scientists, software engineers, and DevOps engineers, you'll define requirements and orchestrate complex data engineering pipelines.
Machine Learning Scientist III - Ads + Search & Recommendations Wayfair LLCMachine Learning Scientist III - Ads + Search & RecommendationsSeattle, WA$194,040–$206,167 / yearHere are some of the key projects our team works on: Candidate Generation/Retrieval: Selecting the right subset of products for our final scoring layers from our entire catalog efficiently through deep understanding of our product catalog and our customers at extreme scale using low latency situations across multiple types of Candidate Generators and Retrieval stages. Experience deploying machine learning models in production environments, with a focus on cloud-based solutions such as GCP (BigQuery, GCS, Vertex AI, Composer), as well as workflow orchestration tools like Airflow, model tracking using MLflow, and containerization technologies like Docker.
Principal Experimental Scientist - RF Helion Energy IncPrincipal Experimental Scientist - RFEverett, WAAs a principal-level scientist, you will integrate cross-functional input from plasma physics, controls, machine operations, electrical engineering, and data science to mature RF pre-ionization from experimental concept into reliable platform capability. Demonstrated track record of independently leading complex experimental programs from concept through validation, including cross-functional technical coordination and translation of results into system improvements.
Machine Learning Scientist - Natural Language Processing (NLP) - Senior Associate - Machine Learning Center of Excellence JPMorgan Chase & CoMachine Learning Scientist - Natural Language Processing (NLP) - Senior Associate - Machine Learning Center of ExcellenceSeattle, WAThe CDAO is also responsible for developing and implementing solutions that support the firm's commercial goals by harnessing artificial intelligence and machine learning technologies to develop new products, improve productivity, and enhance risk management effectively and responsibly. The Chief Data & Analytics Office (CDAO) accelerates our data and analytics journey, with the Machine Learning Center of Excellence (MLCOE) creating and deploying solutions for complex business challenges.
Senior Experimental Scientist Helion Energy IncSenior Experimental ScientistEverett, WAHands-on experience designing, building, calibrating, troubleshooting, or operating plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems. Partner cross-functionally with plasma physics, machine operations, controls, mechanical engineering, electrical engineering, and data science teams to align diagnostic capabilities with experimental and operational needs.
Experimental Scientist Helion Energy IncExperimental ScientistEverett, WAExperience supporting the design, build, calibration, troubleshooting, or operation of plasma diagnostics such as interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics, optical diagnostics, or related measurement systems. Since Helions founding in 2013, we have raised $1.5 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors including Thrive Capital, LightSpeed Venture Capital, SoftBank, and others to propel us forward.
Principal Experimental Scientist Helion Energy IncPrincipal Experimental ScientistEverett, WAIntegrate cross-disciplinary technical input from experts across Helion-including plasma physics, machine operations, controls, and data science-to align diagnostic capabilities with real-time operational needs and long-term scientific milestones. Demonstrated track record using diagnostic measurements (e.g., interferometry, spectroscopy, Langmuir probes, magnetic coils, electrostatic diagnostics) to evaluate plasma parameters such as density, temperature, and current profiles, directly influencing system improvements.
Senior Director, AI & Data Science - Claims & Fraud Liberty Mutual Holding Company IncSenior Director, AI & Data Science - Claims & FraudWAWe''re hiring a Senior Director to lead the data science and AI team supporting our Medical, SIU (Special Investigations Unit), and Programs (MSP) Claims organization and Central Fraud Hub, building the models, decisions, and tools that shape how we detect fraud, resolve claims, and serve customers at scale. You''ll set the AI strategy for the space, lead a team of 15 data scientists, and partner directly with senior claims and fraud leaders to turn AI capabilities into operational changes that move the numbers that matter.