Performance Tester

Job Title : Performance Tester / Performance Test Engineer

Location : Singapore

Role Summary

We are looking for a Performance Tester who can design, execute, analyse and report on performance tests to ensure that applications meet required SLAs (Service Level Agreements) & non-functional requirements for speed, scalability, stability, and reliability. The role includes collaborating with Development, DevOps / Infrastructure, Product, and QA teams to detect bottlenecks, provide actionable insights, and help optimize system performance across various environments (e.g. test, staging, production).

Key Responsibilities

• Understand and work with performance / non-functional requirements (e.g. response times, throughput, concurrency, resource utilisation).
• Plan, design, build, and execute performance tests: load testing, stress testing, spike testing, soak/endurance testing.
• Develop test scenarios and test scripts for realistic workload profiles.
• Use performance testing tools like JMeter, LoadRunner, NeoLoad, Gatling, or other comparable tools.
• Integrate performance tests into CI/CD pipelines for continuous validation.
• Monitor and gather system metrics: CPU, memory, disk I/O, network, database performance, etc. Use APM / monitoring tools (such as Dynatrace, New Relic, AppDynamics, CloudWatch, Prometheus, etc.) to capture performance data.
• Analyse results: identify bottlenecks, resource constraints, memory leaks, latency, throughput issues. Perform root cause analysis.
• Provide performance test reports, dashboards, graphs & metrics, and communicate findings to both technical & non-technical stakeholders.
• Collaborate with development, operations / infrastructure, and architecture teams to recommend and implement performance improvements.
• Validate fixes, retest and ensure there is no regression in performance.
• In production monitoring or post-go-live, help monitor and troubleshoot performance issues.
• (If Senior) Mentor / guide junior performance testers; define performance testing standards & best practices.

Required Skills & Qualifications

• Bachelor's degree in Computer Science, Engineering, Information Technology or related field (or equivalent experience).
• Typically 3-6 years (for mid-level) hands-on experience in performance testing (tool usage, scripting, test design, result analysis); more for senior roles.
• Strong experience with performance testing tools (e.g. JMeter, LoadRunner, NeoLoad, Gatling) and the ability to write/customize scripts.
• Scripting / programming skills (e.g. Java, Python, Shell, Groovy, JavaScript).
• Good knowledge of system architectures: web / API / microservices / cloud / mobile etc.
• Familiarity with databases and ability to analyse database performance (SQL, query optimisation).
• Experience with monitoring / APM tools.
• Understanding of performance metrics (throughput, latency, concurrency, error rates etc.).
• Strong analytical, debugging, and problem-solving skills.
• Good communication skills to present performance findings and recommendations.

Preferred / Nice-to-Have

• Experience in cloud platforms (AWS, Azure, GCP) and cloud performance considerations (autoscaling, latency, multi-region).
• Knowledge of containerization / orchestration (Docker, Kubernetes) and how performance is impacted in such environments.
• Experience in integrating performance tests in CI/CD pipelines.
• Familiarity with performance budgets, SLIs / SLOs / SLAs.
• Experience with frontend performance testing / mobile performance testing.
• Experience in performance engineering / tuning (e.g. server configuration, caching, database tuning etc.).

Job Types: Full-time, Contract

Contract length: 12 months

Pay: $4, $9,484.48 per month