Data Scientist

Department Icon Data Science Analytics & Machine Learning
Posted: 2 weeks ago
5-7 years
Chennai, Tamil Nadu
Data Science Analytics & Machine Learning
work from office
Full Time
Closes 27 Nov 2026

Posted: 2 weeks ago
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Job Description

Job Requirements

About the Role

We are seeking a Data Scientist with 5+ years of experience to develop machine learning solutions for failure prediction, classification, and fault analysis in semiconductor manufacturing and equipment systems. This role focuses on time-series modeling, equipment health monitoring, and root-cause analysis using structured reliability methods such as fault tree analysis (FTA).

You will work with complex, high-volume data from semiconductor tools (sensor signals, logs, process data) to improve tool uptime, yield, and operational reliability.

Key Responsibilities

  • Design, develop, and deploy machine learning models for equipment failure prediction and fault classification
  • Analyze time-series data from semiconductor tools (sensor telemetry, logs, process traces)
  • Perform advanced feature engineering (lags, rolling windows, trends, seasonality, event-based features)
  • Apply fault tree analysis (FTA) concepts to support root-cause analysis and improve model interpretability
  • Collaborate with process engineers, equipment engineers, and failure analysis teams
  • Select, justify, and evaluate appropriate ML algorithms
  • Validate models using metrics such as precision/recall, F1-score, ROC-AUC, and early failure detection accuracy
  • Document models, assumptions, and results for technical and cross-functional stakeholders
  • Mentor junior data scientists and contribute to best practices

Work Experience

Required Qualifications

  • 5+ years of professional experience as a Data Scientist or Machine Learning Engineer
  • Strong proficiency in Python (Pandas, NumPy, scikit-learn)
  • Proven experience with time-series data modeling
  • Hands-on experience building classification and predictive models
  • Experience with failure prediction, reliability analytics, or equipment health monitoring
  • Working knowledge of fault tree analysis (FTA) or structured root-cause analysis
  • Strong feature engineering skills for noisy, real-world industrial data
  • Ability to clearly communicate technical results to engineering stakeholders

Preferred Qualifications

  • Experience in semiconductor manufacturing or equipment systems (etch, deposition, lithography, inspection, metrology)
  • Familiarity with process data, tool logs, alarms, and sensor telemetry
  • Experience with survival analysis, RUL estimation, or anomaly detection
  • Exposure to model explainability techniques (e.g., SHAP, feature importance)
  • Experience deploying models into production or factory systems
  • Background in reliability engineering, systems engineering, or failure analysis

What Success Looks Like

  • Accurate and reliable failure prediction models with low false-positive rates
  • Clear linkage between data-driven predictions and physical failure mechanisms
  • Measurable improvements in tool uptime, yield, and maintenance planning
  • Strong collaboration with cross-functional engineering teams

Representative Tech Stack

  • Python (Pandas, NumPy, scikit-learn)
  • Time-series analysis libraries
  • Machine learning frameworks
  • Visualization and reporting tools

Skills

PythonData ModelingMachine LearningVisualizationData ScientistAnalyticsMlScikit-learnNumpyPandasFeature Engineering

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About Company

For more than 20 years, QuEST is a trusted global engineering services and solutions partner to many of the world's most recognized Fortune 500 companies in Aero Engines, Aerospace & Defense, Automotive, Medical Devices, Oil & Gas, Power, Industrial, Rail, Semiconductor, Consumer Electronics and Software & Internet. With global presence in 13 countries, 65 locations and 12000+ employees, QuEST is at the forefront of the convergence of Mechanical, Electronics, Software and Digital Services to engineer solutions for a safer, cleaner world. QuEST’s deep domain knowledge and digital expertise accelerate product development and innovation cycles, create alternate revenue streams, enhance consumer experience and make manufacturing processes and operations more efficient.

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