Performance Testing Engineer

Job Description

About the role

As a Performance Testing Engineer, you will help ensure that our applications deliver excellent performance, scalability, and reliability before reaching production.

You will collaborate with business stakeholders, developers, testers, architects, DevOps Engineers, and Infrastructure Teams to design, execute, and analyze performance tests that validate system behavior under realistic workloads. Your work will contribute directly to improving customer experience, reducing production risks, and supporting high-quality software delivery across multiple business domains.

This role offers the opportunity to work with modern performance engineering practices, enterprise-scale applications, cloud-native technologies, CI/CD pipelines, and observability platforms while continuously developing your technical expertise across different technology stacks.

Performance Test Planning

• Participate in discovery/analysis sessions to understand business objectives and non-functional requirements (NFRs).
• Asses potential performance risks introduced by new features or architectural changes.
• Define appropriate performance testing strategies based on business and technical requirements.
• Design comprehensive Performance Test Plans/Assessment Documents, covering scope, objectives, workload models, success criteria, and execution approaches.
• Collaborate with stakeholders to clarify assumptions, risks, and expected system behavior.

Performance Test Execution

Design, configure, and execute various performance test types including:

• Load Testing
• Stress Testing
• Spike Testing
• Endurance (Soak) Testing
• Scalability (Limit) Testing
• Capacity Testing
• Other test types (when applicable)

Monitor execution progress, validate results, and ensure test integrity throughout the testing lifecycle.

Test Design & Script Development

• Develop reusable and maintainable performance test scripts.
• Design realistic workload models based on production usage patterns and be able to propose proper approaches for load testing the applications.
• Implement parametrization, correlation, dynamic data handling, and reusable components either in new-script or by using existing frameworks.
• Support testing across Web, Mobile, API, and microservice architectures.
• Maintain test assets following coding and documentation standards.

Performance Analysis

Analyze test results to evaluate:

• Response times
• Throughput
• Transaction success rates
• Error rates
• Resource utilization
• Scalability
• System stability

Identify performance bottlenecks and correlate application behavior with infrastructure metrics (from used observability tools) to determine root causes and provide recommendations.

Reporting & Recommendations

• Produce clear technical and executive performance testing reports (following pre-existing templates or from scratch).
• Present findings to technical and non—technical stakeholders.
• Document risks, bottlenecks, trends, and improvement opportunities.
• Provide recommendations to improve application performance, scalability, and stability.
• Support development teams during performance optimization activities.

Automation & Continuous Performance Testing

• Contribute to integrating performance testing into CI/CD pipelines.
• Support automated performance test execution using enterprise tools and APIs.

Continuously improve testing processes, standards, and best practices.

Qualifications

Required Technical Skills

Performance Testing

Experience with one or more performance testing tools:

Preferred:

• OpenText LoadRunner Enterprise
• OpenText VuGen
• OpenText Analysis

Nice to have:

• Apache JMeter
• Gatling
• K6
• NeoLoad / Blazemeter

Performance Engineering Knowledge

Understanding of:

• Performance testing methodologies
• Performance Engineering principles
• Workload modelling
• Test planning:
• Performance bottleneck identification
• Scalability concepts
• Capacity planning fundamentals
• Performance analysis techniques

Protocols & Technologies:

• Knowledge of:
  • HTTP / HTTPS
  • REST APIs
  • SOAP
  • GraphQL (nice to have)
  • WebSockets (nice to have)
• Understanding of:
  • Web applications
  • APIs
  • Distributed systems
  • Microservices architecture
  • Mobile applications (nice to have)

Scripting & Programming

• Knowledge of one or more:
  • JavaScript
  • Java
  • Python
  • Groovy
  • Basic scripting skills are expected for automation, data manipulation, and script creation & customization.
  • Our main development programming language is JavaScript and usage of internal framework available in LoadRunner Enterprise.

DevOps & CI/CD:

Basic understanding of:

• Git
• GitLab CI *
• Jenkins *
• Azure DevOps *
• GitHub Actions *

* represents an advantage

Experience integrating performance testing into delivery pipeline, following best practices, is considered and advantage

Monitoring & Observability:

• Exposure to monitoring platforms is a plus:
  • Dynatrace
  • AppDynamics
  • Icinga
  • Grafana
  • Datadog
  • Splunk
  • ELK Stack
  • Others

Ability to interpret infrastructure and application metrics is considered an advantage. Understanding JVM and GC processing is also an advantage.

Expected to:

• Understand performance testing fundamentals.
• Ability to work independently and as part of a team.
• Independently design and execute performance test campaigns.
• Create complex scripts and workload models following production patterns.
• Develop reusable scripting components.
• Perform root cause analysis using monitoring platforms.
• Produce detailed Performance Testing Reports with in-depth analysis of applicative and infrastructure metrics & correlations.
• Collaborate directly with development and infrastructure teams.
• Provide optimization recommendations.
• Support junior engineers through knowledge sharing.

Nice to Have:

• Kubernetes
• Test automation frameworks
• Cloud platforms (Azure, AWS, GCP)
• Infrastructure monitoring
• Networking fundamentals
• AI-assisted testing tools / scripting
• Enterprise applications & knowledge of cloud scaling practices (HPA / VPA etc)
• ISTQB Certification Foundation or Advanced.
• Any other relevant certifications for Performance Testing or Application related (i.e Cloud Certifications).

Professional Skills

The successful candidate demonstrates:

• Strong analytical thinking
• Excellent problem-solving abilities
• Attention to detail
• Curiosity and willingness to learn
• Effective communication skills
• Team collaboration
• Ability to explain technical concepts to non-technical stakeholders
• Ownership and accountability
• Time management and organizational skills

Additional Information

Benefits

• Full access to foreign language learning platform
• Personalized access to tech learning platforms
• Tailored workshops and trainings to sustain your growth
• Medical insurance
• Meal tickets
• Monthly budget to allocate on flexible benefit platform
• Access to 7 Card services
• Wellbeing activities and gatherings