Junior SQL Developer
Job in
Johannesburg, 2000, South Africa
Listed on 2026-02-21
Listing for:
iOCO Pty Ltd
Full Time
position Listed on 2026-02-21
Job specializations:
-
IT/Tech
Database Administrator, Data Analyst, Data Engineer, Data Science Manager
Job Description & How to Apply Below
We’re looking for a Junior SQL Developer to support data-driven projects by building, maintaining, and optimising SQL queries and databases. This role is ideal for someone early in their data journey who’s eager to learn, enjoys problem-solving, and wants exposure to real-world enterprise environments.
You’ll work closely with senior developers, data engineers, and business stakeholders to support reporting, data integration, and operational systems.
What you'll do:- Write, test, and optimise SQL queries, views, and stored procedures
- Support database development and maintenance across existing systems
- Assist with data extraction, transformation, and loading (ETL) activities
- Help troubleshoot data-related issues and performance bottlenecks
- Work with business teams to understand reporting and data requirements
- Support dashboard and reporting solutions where required
- Maintain documentation for database objects and processes
- Follow best practices around data quality, security, and version control
- Collaborate with senior team members on ongoing projects and enhancements
- Basic to intermediate SQL (joins, subqueries, aggregates, indexing fundamentals)
- Exposure to relational databases (SQL Server preferred; MySQL / Postgre
SQL acceptable) - Understanding of database concepts (tables, relationships, constraints)
- Comfortable working with datasets and basic data analysis
- Familiarity with Excel and/or basic BI tools is advantageous
- Any exposure to ETL tools or scripting (Python / Power Shell) is a plus
- Strong attention to detail and logical thinking
- Diploma or Degree in IT, Computer Science, Information Systems, or similar
- Relevant certifications or online training in SQL / databases are beneficial
- Graduate or junior‑level candidates welcome
- Curious mindset and willingness to learn
- Strong problem‑solving ability
- Good communication skills
- Able to work independently and within a team
- Organised and comfortable working in structured environments
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