Crossing Hurdles

SQL Developer | $100/hr Remote | Mercor

⭐ - Featured Role | Apply direct with Data Freelance Hub
This role is for a SQL Developer at Mercor, offering $75–$100/hr on a flexible, remote contract. Key skills include expert SQL, PostgreSQL, MySQL, and SQL Server experience, along with database administration and compliance knowledge.
🌎 - Country
United Kingdom
💱 - Currency
£ GBP
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💰 - Day rate
800
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🗓️ - Date
December 4, 2025
🕒 - Duration
Unknown
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🏝️ - Location
Remote
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📄 - Contract
Unknown
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🔒 - Security
Unknown
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📍 - Location detailed
United Kingdom
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🧠 - Skills detailed
#Data Quality #Schema Design #SQL (Structured Query Language) #Statistics #SQL Queries #Indexing #PostgreSQL #Compliance #Data Extraction #Data Integrity #DBA (Database Administrator) #"ETL (Extract #Transform #Load)" #Documentation #Datasets #Security #AI (Artificial Intelligence) #MySQL #Database Infrastructure #SQL Server
Role description
At Crossing Hurdles, we work as a referral partner. We refer candidates to Mercor that collaborates with the world’s leading AI research labs to build and train cutting-edge AI models. Organization: Mercor Position: Database Administrators Referral partner: Crossing Hurdles Type: Hourly contract Compensation: $75–$100 per hour Location: Remote Commitment: 10–40 hours/week, flexible and asynchronous Duration: Flexible Role Responsibilities: • Design and optimize complex SQL queries using EXPLAIN plans and indexing strategies. • Implement schema changes with CREATE/ALTER statements and rollback planning. • Configure and validate automated backup and restoration procedures. • Manage user roles and permissions following defined security policies. • Export/import data between systems with validation checks and encoding integrity. • Execute data quality checks and report violations with remediation scripts. • Apply statistics updates, manage transaction logs, and test failover recovery. • Perform compliance data extractions, patching, and system audits for enterprise use cases. • Document processes and performance findings in clear, reproducible formats. Ideal Qualifications: • Strong experience as a Database Administrator working in production environments. • Expert-level SQL skills and proficiency with PostgreSQL, MySQL, and/or SQL Server. • Strong background in performance tuning, security, data integrity, and schema design. • Familiarity with compliance standards (e.g., SOX), data export formats, and backup tooling. • Comfortable handling large datasets, interpreting execution plans, and managing database infrastructure end-to-end. • Ability to produce production-quality scripts and documentation for technical audiences. Application Process (Takes 20 min): • Submit your resume • AI interview based on your resume (15 min) • Submit form