

Apptad Inc.
Sigma Engineering - Semantic & Snowflake
⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a Senior Sigma Engineer on a long-term contract in Jersey City, NJ. Key skills include Semantic Modeling, Snowflake, AI integration, and data governance. A Bachelor’s or Master’s in IT or Computer Science is required.
🌎 - Country
United States
💱 - Currency
$ USD
-
💰 - Day rate
Unknown
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🗓️ - Date
June 9, 2026
🕒 - Duration
Unknown
-
🏝️ - Location
Hybrid
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📄 - Contract
Unknown
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🔒 - Security
Unknown
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📍 - Location detailed
Jersey City, NJ
-
🧠 - Skills detailed
#Security #Data Governance #"ETL (Extract #Transform #Load)" #Forecasting #Database Schema #AI (Artificial Intelligence) #Snowflake #Computer Science
Role description
Job Title: Senior Sigma Engineer
Location: Jersey City, NJ - HYBRID
Employment Type: Long term Contract
Position Summary:
Semantic Modeling & Governance
• Architect Data Models: Design governed Sigma Data Models on top of Snowflake, translating raw database schemas into an intuitive, business-friendly semantic layer.
• Centralize Logic & Security: Develop reusable core metrics and enforce inherited row-level security within the semantic layer, ensuring a single source of truth and strict data governance.
AI Integration
• Deploy AI Capabilities: Leverage Sigma Assistant and Snowflake Cortex to enable secure, natural-language querying (NLQ) for business stakeholders.
• Enrich Data Natively: Implement inline AI functions directly within workbooks to classify, summarize, and extract insights from unstructured text at warehouse scale.
Workflow Design & Operational Apps
• Build Interactive Workflows: Transform static dashboards into dynamic operational applications using Sigma UI components for cross-functional tasks like forecasting and budget approvals.
• Enable Scenario Modeling: Design robust workbooks leveraging dynamic parameters and Input Tables to support complex, human-in-the-loop "what-if" analysis.
Snowflake Writeback & Architecture
• Implement Secure Writeback: Configure Sigma Input Tables to push user inputs, manual adjustments, and workflow decisions directly back to dedicated Snowflake schemas.
• Optimize & Audit: Maintain immutable audit trails for all writeback activity and balance live-query performance with strategic Snowflake materializations.
Education
• Bachelor’s or Master’s in Information technology, Computer Science or related field.
Job Title: Senior Sigma Engineer
Location: Jersey City, NJ - HYBRID
Employment Type: Long term Contract
Position Summary:
Semantic Modeling & Governance
• Architect Data Models: Design governed Sigma Data Models on top of Snowflake, translating raw database schemas into an intuitive, business-friendly semantic layer.
• Centralize Logic & Security: Develop reusable core metrics and enforce inherited row-level security within the semantic layer, ensuring a single source of truth and strict data governance.
AI Integration
• Deploy AI Capabilities: Leverage Sigma Assistant and Snowflake Cortex to enable secure, natural-language querying (NLQ) for business stakeholders.
• Enrich Data Natively: Implement inline AI functions directly within workbooks to classify, summarize, and extract insights from unstructured text at warehouse scale.
Workflow Design & Operational Apps
• Build Interactive Workflows: Transform static dashboards into dynamic operational applications using Sigma UI components for cross-functional tasks like forecasting and budget approvals.
• Enable Scenario Modeling: Design robust workbooks leveraging dynamic parameters and Input Tables to support complex, human-in-the-loop "what-if" analysis.
Snowflake Writeback & Architecture
• Implement Secure Writeback: Configure Sigma Input Tables to push user inputs, manual adjustments, and workflow decisions directly back to dedicated Snowflake schemas.
• Optimize & Audit: Maintain immutable audit trails for all writeback activity and balance live-query performance with strategic Snowflake materializations.
Education
• Bachelor’s or Master’s in Information technology, Computer Science or related field.






