Senior Performance Test Engineer (5+ Years Experience)

Location: Onsite at Client Office (HCMC)

Employment Type: Full-time

Responsibilities

Performance & Load Testing (60%)

• Design, develop, and execute performance test plans, test scenarios, and automated test scripts for enterprise applications, APIs, microservices, middleware, and mission-critical backend systems.
• Perform various types of performance testing, including Load Testing, Stress Testing, Volume Testing, Spike Testing, and Endurance Testing.
• Simulate real-world transaction volumes and concurrent user activities to validate system scalability, stability, and capacity.
• Analyze performance metrics such as response time, throughput, transactions per second (TPS), requests per second (RPS), error rates, and resource utilization.
• Evaluate system performance against defined SLAs and non-functional requirements.

API & Integration Testing (20%)

• Conduct performance testing for APIs and integration services supporting digital platforms and enterprise applications.
• Validate performance across end-to-end integration flows involving middleware, mobile/web applications, CRM systems, payment services, and other connected enterprise platforms.
• Identify and troubleshoot performance bottlenecks across APIs, middleware, databases, and downstream services.

Analysis & Troubleshooting (20%)

• Monitor application, database, middleware, and infrastructure performance during testing activities.
• Investigate performance issues and collaborate with development, architecture, infrastructure, and business stakeholders to identify root causes.
• Prepare performance testing reports and provide recommendations for performance tuning and system optimization.

Requirements

• Minimum 5 years of experience in Software Testing, including Performance Testing.
• Strong hands-on experience with performance testing tools such as JMeter, LoadRunner, Gatling, k6, or similar.
• Experience testing RESTful APIs, microservices, and distributed systems.
• Solid understanding of performance metrics, capacity planning, and system bottleneck analysis.
• Familiarity with monitoring and observability tools (e.g., Grafana, Kibana, Dynatrace, AppDynamics, Splunk, Prometheus).
• Good understanding of databases (SQL/NoSQL) and middleware technologies.
• Experience working in Agile/Scrum environments.
• Strong analytical and troubleshooting skills.
• Good communication skills and ability to work directly with client stakeholders.

Preferred

• Experience in financial services, banking, payment, or high-volume transaction systems.
• Experience with cloud environments (AWS, Azure, GCP).
• Knowledge of CI/CD and performance testing automation.

Benefits

• Competitive Salary + Super. 
• Performance Bonuses. 
• An amazing team - supportive, fun, and caring with team building, and fun activities. 
• Plus most importantly a genuinely relaxed, happy, respectful, energetic working environment where you will look forward to coming to work each day - whether it is in your home or the office. 
• Professional facilities 
• Social Insurance, Health Insurance, Unemployment Insurance 
• Support fee to get Certificate. 
• Agile English-speaking training and on-the-job training 
• Light beverages and food are available all the time in the office