Talent.com
Senior SQL Engineer
Senior SQL EngineerSuperAnnotate • Markham, Ontario, CA
Senior SQL Engineer

Senior SQL Engineer

SuperAnnotate • Markham, Ontario, CA
21 hours ago
Job type
  • Full-time
  • Remote
Job description

As a Senior SQL Engineer, you will work remotely on an hourly paid basis to review AI-generated SQL queries, database designs, and data-processing logic, as well as generate high-quality reference solutions and explanations for complex data problems. You will assess solutions for accuracy, clarity, and adherence to the prompt; identify errors in methodology, query structure, indexing strategy, or conceptual understanding; fact-check data-related claims; write clear, step-by-step explanations and model solutions that demonstrate correct methods; and rate and compare multiple AI responses based on correctness, performance, and reasoning quality.

This is a fully remote, hourly paid contractor role with SME Careers, a fast-growing AI data services company and subsidiary of SuperAnnotate that provides AI training data to many of the world’s largest AI companies and foundation model labs. Your SQL and database engineering expertise will directly contribute to improving the world’s premier AI models used across industries.

Key Responsibilities :

  • Develop AI Training Content : Create detailed prompts in various topics and responses to guide AI learning, ensuring the models reflect a comprehensive understanding of diverse subjects.
  • Optimize AI Performance : Evaluate and rank AI responses to enhance the model's accuracy, fluency, and contextual relevance.
  • Ensure Model Integrity : Test AI models for potential inaccuracies or biases, validating their reliability across use cases.

Your Profile :

  • Bachelor’s degree or higher in Computer Science, Information Systems, Engineering, Mathematics, or a closely related technical field.
  • 7+ years of professional experience working with SQL in production environments as a Database Engineer, SQL Developer, Data Engineer, or similar role.
  • Expert-level proficiency in SQL, including complex joins, window functions, aggregation strategies, and query plan analysis.
  • Demonstrated experience with database performance tuning, indexing strategies, and troubleshooting concurrency or locking issues.
  • Hands-on experience designing relational data models, schemas, and data warehouse structures (star and snowflake schemas).
  • Strong experience with ETL / ELT processes and tooling, as well as working with large-scale data in modern cloud or on-prem data platforms.
  • Minimum C1 English proficiency (written and spoken), with the ability to write clear technical explanations and follow detailed English-language guidelines.
  • Comfort with version control, CI / CD practices, and collaborative workflows for managing database changes.
  • Previous experience with AI data training, annotation, or evaluating AI-generated technical content is a strong plus.
  • Highly detail-oriented and systematic, with a methodical approach to evaluating reasoning quality and identifying subtle data or query issues.
  • Create a job alert for this search

    Senior Engineer Sql • Markham, Ontario, CA

    Similar jobs
    Senior Data Engineer

    Senior Data Engineer

    Scene+ • Toronto, ON, Canada
    Full-time
    At Scene+, we foster an entrepreneurial spirit that drives our mission : making tomorrow even more rewarding for our members. As a unique joint venture between Cineplex, Empire, and Scotiabank, and a...Show more
    Last updated: 30+ days ago • Promoted
    Senior Software Engineer - Databases

    Senior Software Engineer - Databases

    Fivetran • Toronto, Canada
    Full-time
    Senior Software Engineer - Databases.Fivetran From Fivetran’s founding until now, our mission has remained the same : to make access to data as simple and reliable as electricity.With Fivetran, cust...Show more
    Last updated: 30+ days ago • Promoted
    Senior Software Engineer- Data Migration

    Senior Software Engineer- Data Migration

    NearSource • Toronto, Canada
    Full-time
    Job title : Senior Software Engineer Data Migration Location : 100% Remote, Canada Experience : 7+ Years.Role Summary NearSource is looking for a. The role focuses on migrating critical datasets from l...Show more
    Last updated: 25 days ago • Promoted
    Sr. Data engineer KATDC5697872 - toronto

    Sr. Data engineer KATDC5697872 - toronto

    Compunnel Inc. • toronto, on, ca
    Full-time
    Deep expertise in relational databases (Snowflake, PostgreSQL, Amazon Aurora), big data platforms (Hadoop), and NoSQL databases (MongoDB). Advanced proficiency in data visualization tools such as Sn...Show more
    Last updated: 4 days ago • Promoted
    Senior Data Engineer, Platform

    Senior Data Engineer, Platform

    Jobber • Toronto
    Full-time
    Does working with Data motivate and excite you?.Then Jobber might be the place for you! We’re looking for a.Jobber exists to help people in small businesses be successful.We work with small home se...Show more
    Last updated: 14 days ago • Promoted
    Senior Analytics Engineer

    Senior Analytics Engineer

    Clutch Technologies Inc. • Toronto, ON, Canada
    Full-time
    Clutch is Canada's largest online used car retailer, delivering a seamless, hassle-free car-buying experience to drivers everywhere. Customers can browse hundreds of cars from the comfort of the...Show more
    Last updated: 30+ days ago • Promoted
    Senior Data Engineer - RAG & Cloud Pipelines

    Senior Data Engineer - RAG & Cloud Pipelines

    BenchSci Analytics Inc. • Toronto, Canada
    Full-time
    A leading data technology firm in Toronto is looking for a Senior Software Engineer to enhance data models and implement production-grade data pipelines. The ideal candidate will have over 4 years o...Show more
    Last updated: 30+ days ago • Promoted
    Senior Data Platform Engineer

    Senior Data Platform Engineer

    hireVouch • Toronto, ON, Canada
    Full-time
    We’re looking for an engineer who thrives on building scalable data platforms and enjoys tackling complex backend challenges. This isn’t just a data engineering role, you’ll be des...Show more
    Last updated: 30+ days ago • Promoted
    Senior NoSQL Data Engineer — High-Volume Pipelines

    Senior NoSQL Data Engineer — High-Volume Pipelines

    Theory Ventures • Toronto
    Full-time
    A leading data solutions company is hiring a Senior Software Engineer to improve the performance of their NoSQL data pipeline services in Toronto. The role requires Java expertise and experience wit...Show more
    Last updated: 23 hours ago • Promoted
    Senior Analytics Engineer

    Senior Analytics Engineer

    Alpaca • Toronto, ON, Canada
    Full-time
    Alpaca is a US-headquartered self-clearing broker-dealer and brokerage infrastructure for stocks, ETFs, options, crypto, fixed income, 24 / 5 trading, and more. Our recent Series C funding round broug...Show more
    Last updated: 4 days ago • Promoted
    Database Engineer

    Database Engineer

    Pixomondo • Toronto, ON, Canada
    Full-time
    We’re looking for a seasoned Database Engineer to join our.In this role, you will be responsible for ensuring performance, reliability, and scalability of our data layer, as well as contribut...Show more
    Last updated: 30+ days ago • Promoted
    Senior Software Engineer, Central Systems — Data & Cloud

    Senior Software Engineer, Central Systems — Data & Cloud

    OCS Ontario Cannabis Store • Toronto, Canada
    Full-time
    A leading organization in the cannabis sector is seeking a Senior Software Engineer to enhance their Central Systems team. This role requires strong experience in systems integration, application de...Show more
    Last updated: 2 days ago • Promoted
    Senior Data Platform Engineer - Cloud Data Pipelines

    Senior Data Platform Engineer - Cloud Data Pipelines

    Gusto • Toronto
    Full-time
    A tech-driven organization is seeking a Senior Software Engineer to oversee the data infrastructure.This role involves the architecture and maintenance of data systems, requiring a minimum of 7 yea...Show more
    Last updated: 14 days ago • Promoted
    Senior SQL Engineer

    Senior SQL Engineer

    SuperAnnotate • Keswick, Ontario, CA
    Remote
    Full-time
    As a Senior SQL Engineer, you will work remotely on an hourly paid basis to review AI-generated SQL queries, database designs, and data-processing logic, as well as generate high-quality reference ...Show more
    Last updated: 21 hours ago • New!
    Senior Data Engineer

    Senior Data Engineer

    Talent To Hire Inc. • Toronto, ON, Canada
    Full-time
    Toronto ( 3 days downtown / Hybrid).Our client is interviewing to onboard a.We are looking for Data Engineers with proven track record working within the Wealth Mgmt. You’ll help build and optim...Show more
    Last updated: 30+ days ago • Promoted
    Data Engineer (Python, GCP) - Contract - Toronto

    Data Engineer (Python, GCP) - Contract - Toronto

    CorGTA • Toronto, ON, Canada
    Full-time
    Role : Data Engineer (Fortune 1000 Client).Structure : Contract (6months initially then extension options).Location : Toronto, ON (Hybrid 2-3days in office per week). We currently have an opportunity f...Show more
    Last updated: 19 days ago • Promoted
    Senior Data Platform Engineer

    Senior Data Platform Engineer

    IGM US Holdings, Inc. • Toronto, Ontario, Canada, M4B 0A3
    Full-time
    Gravity is the platform public agencies use to manage budgeting, automate financial reporting, and meet compliance with confidence. From Annual Comprehensive Financial Reports (ACFR) to Budget Books...Show more
    Last updated: 18 hours ago • New!
    Senior Database Engineer

    Senior Database Engineer

    G Adventures • Toronto, Canada
    Full-time
    About Us G Adventures is the world’s largest small-group adventure travel company and we’ve been making epic travel memories happen on all seven continents for over 30 years.Our mission is simple : ...Show more
    Last updated: 30+ days ago • Promoted