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# QA Tester

- **Company:** VIQU Ltd
- **Location:** London, UK (Remote available)
- **Salary:** £51,139.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), Artificial Intelligence, Big Data, Cloud Computing, Extract Transform Load (ETL), Design of User Interfaces, Python (Programming Language), Regression Testing, Standard Sql, Data Streaming, Strategies of Testing, Test-Driven Development (TDD), SC Clearance, Build Management, Apache Kafka, Data Pipelines
- **Published:** October 9, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5918818303

## About the Role

* Hands-on Kafka experience, including topics, partitions, consumer groups, offsets, replay and schema registry.
 * Experience testing high-volume ETL or ELT data pipelines at scale, with millions of rows per day or more.
 * Experience writing a test strategy, including identifying what to test first, assessing risk in streaming data and sequencing evidence.
 * Experience with modern architecture, including REST, contract testing and schema validation.
 * Experience with automated regression testing in CI, with repeatable suites that run on every release.
 * Comfort working closely with data engineers and building tooling that enables testing at the pipeline level.
 * Strong Python and SQL skills.
 * Structured, evidence-led approach with defined criteria, traceability and thorough documentation.
 * Ability to work in a small team with loose boundaries and high standards.
 * SC clearance, or genuine eligibility for it; active clearance is strongly preferred on contract.

## Description

* Test large-scale Kafka streaming and batch data pipelines, including ingestion, transformation, reconciliation and output.
 * Build test harnesses with data engineers to make the system testable at scale.
 * Prove correctness, completeness and integrity across very large data volumes.
 * Design and build an automated regression suite to run on every release and verify accuracy, stability and response times.
 * Write the test strategy for the programme from scratch.
 * Prepare formal test documentation for defence factory assurance, including what was tested, how, against which criteria and milestone sign-off.
 * Work hands-on as part of a small, multidisciplinary team, including supporting engineering leadership.

Technologies:

 * AI
 * Cloud
 * ETL
 * Kafka
 * Python
 * REST
 * SQL
 * Security
 * API
 * IoT
 * UX UI Design