Non Functional Tester

DVT is one of the top software development companies on the continent. Our software engineers are consulting on cutting-edge applications at top companies in South Africa, as well as consulting globally. You will have the opportunity to work alongside some of the most established developers in the country and globally with the latest technologies.

DVT is committed to continuously training our staff and we are very proud of our culture of learning, internal speaking and training at a variety of sponsored technical events across the AWS & Azure ecosystem.

We are looking for a skilled Non-Functional Tester to join our growing quality engineering team. You will be responsible for planning, executing, and reporting on non-functional testing activities across complex systems, ensuring performance, scalability, resilience, and overall system reliability.

This role requires strong API testing experience, hands-on knowledge of performance testing tools, and the ability to communicate testing outcomes clearly to both technical and business stakeholders.

Key Responsibilities

• Design, prepare, execute, and report on non-functional testing activities.

• Develop and maintain performance and API testing frameworks.

• Conduct performance, load, stress, and resilience testing.

• Validate API functionality through request chaining, parameterisation, and functional verification.

• Analyse test results and present findings, risks, and recommendations to stakeholders.

• Collaborate with development, operations, and product teams to identify performance bottlenecks and reliability risks.

• Support observability and monitoring initiatives to improve system performance and operational visibility.

• Contribute to test strategy, planning, and continuous improvement activities.

Minimum Requirements

• ISTQB certification or equivalent testing qualification.

• Proven experience in non-functional test planning, execution, and reporting.

• Experience presenting testing results and recommendations to stakeholders.

• Strong API testing experience, including:

  • Request chaining

  • Parameterisation

  • Functional validation and proving

• Hands-on experience creating and maintaining testing frameworks using:

  • Postman

  • JMeter

  • LoadRunner

  • Azure-based testing environments

• Experience with observability and monitoring tools, preferably Datadog.

Advantageous Experience

• Smart Meter experience (SMETS1 and SMETS2).

• Energy or utilities industry experience.

• Business Continuity and resilience testing experience.

• Experience with Jira and Confluence.

• Exposure to disaster recovery and operational resilience testing programmes.

Skills and Competencies

• Strong analytical and problem-solving skills.

• Excellent communication and stakeholder engagement abilities.

• Ability to interpret performance metrics and identify root causes.

• Attention to detail and a quality-first mindset.

• Ability to work independently and as part of a multidisciplinary team.

• Strong reporting and documentation skills.

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