Senior Data Scientist, Data Engineering Expert

Mercor

. Design realistic, challenging data science and data engineering tasks .

Posted 11/1/2026contractRemote • United States, United Kingdom, Canada, Australia, New ZealandSenior💰 $120 - $180 per hourWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in data science and data engineering, with a strong command of Python and SQL for statistical modeling and machine learning. Capable of designing data pipelines and conducting rigorous analyses while effectively communicating technical findings.

Highest-signal resume keywords

Python ProgrammingSQL ProficiencyStatistical ModelingMachine Learning ExpertiseData Pipeline Design

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Data ScienceData EngineeringMachine LearningStatistical AnalysisETL ProcessesA/B TestingCausal InferenceExploratory AnalysisWorkflow DevelopmentData Pipeline Design

Soft Skills

Detail-OrientedEffective CommunicationFeedback ReceptionIterative ImprovementJudgment Calibration

Industry Keywords

Quantitative FirmFinancial InstitutionConsulting FirmFortune 100 CompanyEnglish-Speaking Country

Tech Stack

Tools & technologies

ETLPythonSQL

About the role

Key responsibilities & impact

Design realistic, challenging data science and data engineering tasks
Create exploratory analyses, statistical models, machine learning pipelines, ETL and data pipeline designs, SQL and Python workflows, and experimentation or A/B test write-ups
Write precise, task-specific criteria for data science and data engineering deliverables
Apply consistent, evidence-based judgment so assessments are reproducible and defensible
Receive structured feedback from senior reviewers and iterate on submitted work
Train and evaluate frontier AI models using professional data science and data engineering expertise

Requirements

What you’ll need

4+ years of professional data science, data engineering, or machine learning experience
Experience at a leading technology or quantitative firm, top financial institution, top-tier consulting firm, or Fortune 100 company in qualifying roles
Strong command of Python, SQL, statistical modeling, machine learning, experimentation, and causal inference
Ability to turn messy real-world data into rigorous analyses and reliable pipelines
Excellent written English, including the ability to explain technical findings clearly
Bachelor's degree from an English-speaking country
Detail-oriented, consistent approach to evaluating complex work
Comfortable receiving feedback and calibrating judgment against set standards
Must be based in the United States, United Kingdom, Canada, Australia, or New Zealand
H1-B and STEM OPT candidates cannot be supported

Benefits

Comp & perks

Fully remote role
Flexible schedule / complete work on your own schedule
Weekly payments via Stripe or Wise
Competitive pay
Opportunity to collaborate with leading researchers
Opportunity to help shape the next generation of AI systems
Referral payments of up to $720 per successful referral (referral limits apply)
Reasonable accommodations upon request