Mid Level SQL Annotator
Odixcity Consulting
Job Overview
Location
Remote
Salary
NGN 500,000 monthly
Employment Type
Full-time
Work Arrangement
Remote
Sector
Data & Analytics
Experience Level
Mid-level (3-5 years)
Application Deadline
July 27, 2026
Job Description
The data annotation landscape is rapidly expanding, fueled by the escalating need for high-quality training data essential for AI and machine learning advancements. This role is crucial in establishing a vital connection between raw database pipelines and the sophisticated machine learning models that power our analytics platform.
You will be responsible for querying intricate datasets, pinpointing critical edge cases, and meticulously annotating both structured and unstructured data. Your contributions will directly enhance our AI's natural language understanding (NLU) capabilities, significantly improving the accuracy and effectiveness of our analytics platform.
To apply for this role, click the Apply button on this page and follow the instructions.
Required Skills
Key Responsibilities
- Write advanced SQL queries (using JOINs, CTEs, WINDOW functions, and subqueries) to pull precise trainings slices from data warehouse.
- Use SQL string functions (SPLIT) to flatten nested JSON blobs, logs, or free text fields into tabular rows ready for labeling.
- Apply CASE statements and conditional logic to normalize dirty data before they reach the annotation queue.
- Manually review queried data and assign granular labels.
- Write dynamic SQL rules to automatically pre-label high confidence data so human annotators only review the ambiguous.
- Build automated SQL audit queries that can scan the annotated dataset daily to flag duplicates, conflicting labels, null values, or out of distribution samples before they reach the ML Team.
- Partner with ML Engineers to test proposed annotation guidelines against actual database records.
Qualifications
- Bachelor’s Degree in Computer Science or a relating field.
- 5+ years’ experience writing advanced SQL in a professional setting and can be able to identify the difference between INNER JOIN, LEFT JOIN, and LATERAL FLATTEN without Google.
- Experience with annotation tools (Label box, Super Annotate) and familiar with python or R for Data manipulations.
- Ability to spot a missing comma or a mislabeled data point from a mile away and understand the ripple effect it has on model performance.
- Ability to translate technical database structures into plain English annotation guidelines for non-technical team members.
How to Apply
Send your CV to cvs@odixcityconsulting.com.ng using the job title as the subject of the mail.
Join Our Communities
The field of data annotation is experiencing significant growth, driven by the increasing demand for high-quality training data in AI and machine learning. This role is pivotal in bridging the gap between raw data and intelligent systems. You will leverage advanced SQL to query complex datasets, identify critical edge cases, and meticulously annotate both structured and unstructured data. Your work directly enhances the natural language understanding (NLU) capabilities of our AI, impacting the accuracy and effectiveness of our analytics platform and contributing to improved business ROI.
Posted Date
July 13, 2026
Senior Data Associate
PACT Solutions
Paid Media Analyst
RYNO Strategic Solutions
Senior Data Analyst
GroundTruth
Staff Data Analyst
Facet
Data Analyst Intern
Confidential Employer
Data Analyst
Stio
Senior Level SQL Annotator
Odixcity Consulting
Food Production Analyst - Entry Level
The Place
Database Analyst/Administrator - Education Applications
Centorrino Technologies
Data & Research Team Member
Hayche Multi-Services Solutions