Data Tester

Job Mail • Commerce • Bachelor's Degree • Python • Java • SQL • ETL/ELT • Informatica • DataStage • 1 day ago
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Salary
$362k – $579k per year
Location
In office (Centurion)
Seniority
Staff · 8+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 24, 2026. First seen by Alion on Oct 22, 2026. Job Mail scores C on the Alion truth index.

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Company
Impact
Profile match

Job Mail

Job Mail is a South African online job board offering a large selection of vacancies across the country and some positions abroad. Job seekers can search and apply for jobs online, upload a CV and receive job alerts, while employers and recruitment agencies can advertise positions to a broad national audience. The brand is one of the longer-established names in South African job advertising and is operated from South Africa.
jobmail.co.za • HQ: Pretoria, South Africa • Job Boards & Aggregators • Est. 1997
Experience, knowledge and qualifications:
  • Bachelor of Science: Computer Science or Statistics, or
  • Bachelor of Science/Commerce: Information Systems or Informatics or
  • Minimum: Diploma in Information Technology.
  • Qualifications preferred: Testing qualification ISTQB/ISEB.
  • Overall work experience: 8+ years
  • 5+ years in BI and/or data analysis and testing

Technical skills:

  • Commercial/Cloud technology: AWS
  • Data querying tools/languages: SQL
  • Understanding of data mesh frameworks
  • Intermediate understanding of analytics coding languages: Python, Java
  • Understanding of Data Integrity validation and data testing methodologies.
  • Must have very strong knowledge and extensive experience in MS office.
  • Must have experience in an Agile work environment.
  • Expert integration testing skills
  • Automated and/or manual testing certifications (e.g. Selenium or Cypress (Preferred)
  • Exposure to AI-assisted software testing and quality engineering tools.
  • Create effective ETL test cases and scenarios based on ETL database loading technology and business requirements.
  • Create effective dashboard/data visualization test cases and scenarios based on business requirements.
  • Perform SQL queries, stored procedures, and test scripting to delete, define, load, and merge data for tests.
  • Ensure that test cases are aligned with business data and metadata (data sources, data tables, data dictionary, business terminology).
  • Demonstrate an understanding of data models, data mapping documents, ETL design, and ETL coding by using these resources to inform test cases.
  • Troubleshooting of ETL (e.g., Informatica/DataStage) sessions, workflows, and logs
  • Implementation of automated testing for ETL processes.
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