Senior Data Scientist

CertiK, Inc.

Job Overview

Location

New York, New York

Job Type

Full-time

Full Job Description

📋 Description

• Build and maintain ETL pipelines to extract, transform, and load large-scale datasets from APIs, databases, and third-party platforms for real-time analytics and reporting.
• Automate data preprocessing workflows including cleaning, normalization, and validation of client account data using rule-based logic and statistical checks to ensure high data quality.
• Prepare analysis-ready datasets for modeling and reporting by structuring raw data into consistent, reliable formats suitable for downstream machine learning and analytical applications.
• Collaborate with security and engineering teams to align data pipelines with the needs of smart contract audits, on-chain monitoring, and incident response workflows.
• Monitor data pipeline performance and reliability, identifying and resolving bottlenecks, data inconsistencies, or failures in real-time data flows.
• Implement scalable data ingestion solutions capable of handling high-volume, high-velocity blockchain and Web3 data sources.
• Document data lineage, transformation rules, and validation criteria to ensure transparency and reproducibility across team workflows.
• Work with cross-functional teams to translate business requirements into technical data specifications for client-facing analytics and internal security intelligence tools.
• Ensure compliance with data governance standards when processing sensitive blockchain transaction data and client information.
• Contribute to the development of AI-powered security tools by providing clean, structured, and validated datasets that support model training and inference.
• Stay current with emerging data engineering practices and blockchain data formats to continuously improve pipeline efficiency and accuracy.
• Participate in code reviews and peer collaboration to maintain high standards in data pipeline architecture and implementation.

🎯 Requirements

• Proven experience building and maintaining ETL pipelines for large-scale datasets from APIs, databases, and third-party platforms
• Strong proficiency in data preprocessing techniques including cleaning, normalization, and validation using rule-based logic and statistical methods
• Experience working with blockchain or Web3 data sources and understanding of on-chain transaction structures
• Proficiency in programming languages such as Python or SQL for data manipulation and automation
• Ability to work with real-time data flows and ensure high reliability and scalability of data systems
• Experience collaborating with security, engineering, or analytics teams in a fast-paced technical environment

🏖️ Benefits

• Competitive salary and performance-based bonuses
• Comprehensive health, dental, and vision insurance
• Unlimited paid time off and flexible work hours
• Remote work options with support for global team collaboration
• Access to cutting-edge Web3 security tools and research resources
• Professional development stipend for conferences, courses, and certifications

Skills & Technologies

Data Science

Senior

Onsite

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CertiK, Inc.

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About CertiK, Inc.

CertiK is a blockchain security firm that performs formal verification audits of smart contracts and decentralized protocols. Its offerings include static analysis, penetration testing, on-chain monitoring via the Skynet platform, KYC verification and incident response. Founded in 2018 by Yale and Columbia professors, the company secures DeFi, NFT, layer-1 and bridge projects, identifying vulnerabilities before deployment and providing real-time threat detection after launch.

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