Team Lead Full - Stack Developer at fast - growing SaaS organization focused on customer experiences. Leading development efforts with modern technologies while managing a collaborative team.
About the role
- Performance Analyst focusing on performance testing and scalability for supply chain software at Tecsys. Engaging with technology and logistics to enhance performance metrics.
Responsibilities
- Design and execute performance, load, stress, and endurance tests, and publish key metrics
- Develop performance test plans and realistic load models based on WMS flows and operational patterns
- Build and maintain reusable test assets with JMeter (APIs) and Playwright (UI flow validation when required)
- Analyze bottlenecks at the application, PostgreSQL database, and Kubernetes/AWS infrastructure levels; lead root-cause analyses and formulate recommendations
- Leverage logs, metrics, and APM tools (e.g., Datadog) to validate regressions and confirm improvements
Requirements
- 5+ years of proven experience in performance and scalability testing / performance engineering
- Strong ability to independently determine what to measure, how to execute tests, and how to interpret results
- Deep knowledge of the supply chain domain and Warehouse Management Systems (WMS) (required) — understanding of warehouse operations and common workflow variations
- Experience with enterprise applications in Kubernetes and cloud environments (preferably AWS)
- Experience with tools such as JMeter, Playwright, and monitoring/APM tools (Datadog or equivalent)
- Strong hands-on expertise with JMeter (test design, correlation, parameterization, data-driven execution, reporting and analysis)
- Experience using Playwright for UI automation and validation of flows (smoke tests and critical paths)
- Proficiency in Java for troubleshooting, testing, and understanding application behavior
- Proficiency in Python for scripting, automation utilities, and analysis
- Strong knowledge of PostgreSQL and performance investigation techniques (slow queries, locks/concurrency, indexing, connections)
- Experience testing REST and SOAP services
- Knowledge of Kubernetes and AWS concepts related to performance and scalability
- Excellent communication and collaboration skills with multidisciplinary teams
- Proactive, structured approach focused on problem-solving and root-cause analysis
- Strong attention to detail; ability to manage multiple tasks and priorities
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