Performance & Non Functional Test Engineer

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 an experienced Performance & Non-Functional Test Engineer to join our Quality Engineering team. You will be responsible for designing, executing, analysing, and reporting on non-functional testing activities across a range of enterprise applications and platforms.

The ideal candidate combines strong performance testing experience with API testing, observability, test strategy, and stakeholder engagement skills. You will work closely with developers, architects, product owners, and operations teams to ensure resilient, scalable, and reliable systems.

Key Responsibilities

• Design and execute performance, load, stress, endurance, and resilience testing activities.

• Develop and maintain performance testing frameworks and reusable testing assets.

• Perform API testing and validation across REST and SOAP services.

• Analyse application and system performance to identify bottlenecks and risks.

• Produce detailed test reports and present findings and recommendations to stakeholders.

• Contribute to non functional test strategy, planning, estimation, and test execution activities.

• Collaborate with cross functional teams throughout the SDLC.

• Support root cause analysis and performance optimisation initiatives.

• Leverage monitoring and observability tools to validate application behaviour.

• Contribute to continuous improvement of testing processes, tooling, and quality practices.

Technical Skills

• Azure ecosystems and cloud hosted applications.

• CI/CD pipelines and automated delivery practices.

• Monitoring and observability tools such as:

  • Datadog

  • Dynatrace

  • Grafana

  • Azure Application Insights

• SQL for test data creation, validation, and analysis.

• Jira and Confluence.

Minimum Requirements

• ISTQB Foundation certification or equivalent testing qualification.

• 5+ years of software testing experience with at least 3 years focused on non-functional or performance testing.

• Proven experience with:

  • Performance Testing

  • Load Testing

  • Stress Testing

  • Scalability Testing

  • Reliability Testing

• Strong API testing experience including:

  • REST and SOAP services

  • Request chaining

  • Parameterisation

  • Functional validation

• Hands-on experience with:

  • Postman

  • JMeter

  • LoadRunner or NeoLoad

• Experience creating and maintaining test frameworks and test assets.

• Experience analysing and presenting test results to technical and business stakeholders.

• Strong defect management and reporting experience.

• Experience working in Agile environments.

Advantageous Experience

• Business Continuity and Operational Resilience testing.

• Disaster Recovery testing.

• Energy or Utilities sector experience.

• Smart Meter experience (SMETS1 and SMETS2).

• Basic scripting capabilities using Java, Python, or similar languages.

• Test automation experience.

• Security testing exposure.

• Containerisation technologies such as Docker.

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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