QA Performance Engineer (IoT sphere)

About the role

The project focuses on performance testing of the middleware service layer that powers a connected‑device platform for a global smart‑home leader. The QA Performance Engineer will help build and maintain a JMeter‑based testing framework, execute performance tests, and work closely with developers, DevOps and senior performance engineers to ensure backend, API and micro‑service reliability.

Key responsibilities

• Execute performance, load, stress and soak tests for backend services, REST APIs and micro‑services using JMeter.
• Develop and maintain JMeter test scripts and reusable components under guidance of senior engineers.
• Extend the performance testing framework with new scenarios, data sets and utilities.
• Analyze test results, prepare reports and collaborate with developers and DevOps to identify bottlenecks.
• Use observability tools such as Grafana and Datadog to review dashboards and support root‑cause analysis.
• Document test plans, scenarios, execution results and findings in a clear, reproducible way.
• Participate in Agile ceremonies and ensure performance criteria are met before release.
• Continuously improve personal skills in performance engineering, JMeter and cloud‑based systems.

Required profile

• At least 1 year of QA experience (manual or automation).
• Basic understanding of performance testing concepts and key metrics.
• Hands‑on experience with JMeter, including test plan creation, recording, parameterisation and assertions.
• Good knowledge of REST APIs, HTTP methods, status codes and JSON payloads.
• Fundamental Java and object‑oriented programming knowledge.
• Ability to read and interpret graphs, dashboards and basic system metrics.
• Strong analytical thinking, attention to detail and problem‑solving skills.
• Effective communication and teamwork abilities, familiarity with Agile/Scrum.
• English proficiency at B2 level or higher.

Required skills

• JMeter
• Java (basic)
• REST APIs / HTTP
• Git
• Linux command‑line basics
• AWS, Azure or GCP (basic)
• Grafana, Datadog, CloudWatch
• Microservices architecture
• CI/CD pipelines (Azure DevOps, GitHub Actions, Jenkins)

What we offer

• Resources and opportunities for self‑education in technical and non‑technical areas.
• Access to internal conferences and meet‑ups with industry experts.
• Medical insurance.
• Sports activities to promote a healthy lifestyle.
• Flexible work options, including remote and hybrid opportunities.
• Referral program for bringing in new talent.