QA Performance Engineer (IoT sphere)

Coherent Solutions; New York (NY); Hybrid; USD 65,000 - 90,000; Full time

Benefits offered by this job

Technical and professional training

Internal tech conferences

Mentorship program

Health insurance

English courses

Flexible work (remote/hybrid)

Referral program

Additional vacation days

Job summary

Coherent Solutions is seeking a QA Automation Engineer to focus on performance testing of our middleware layer powering a connected device platform. You will implement and run JMeter-based tests, analyze results, and work with DevOps and developers to ensure backend and API performance meets reliability standards.

You’ll contribute to the testing framework, develop reusable components, and document findings for reproducible releases.

Qualifications

• 1+ year of QA experience (manual or automation).
• Basic understanding of performance testing concepts and metrics.
• Hands-on exposure to JMeter with test plan structure, scripting, parameterization and assertions.
• Understanding of REST APIs and HTTP basics (methods, status codes, headers, JSON).
• Basic knowledge of Java and object-oriented programming.
• Ability to read graphs, dashboards and basic system metrics.
• Strong analytical thinking, attention to detail and problem-solving skills.
• Good communication and ability to work in a team.
• Familiarity with Agile/Scrum software development process.
• English level: B2 or higher.

Responsibilities

• Execute performance, load, stress, and soak tests for backend services, REST APIs, and microservices using JMeter.
• Develop and maintain JMeter test scripts under guidance of senior engineers.
• Contribute to the performance testing framework with new scenarios and reusable components.
• Analyze test results, prepare reports, and help identify performance bottlenecks with Developers and DevOps.
• Use Grafana and Datadog to review dashboards and logs for root cause analysis.
• Document test plans, scenarios, execution results, and findings clearly.
• Collaborate with Developers, DevOps, and QA to ensure performance criteria are met before release.
• Participate in Agile ceremonies and daily team communication.
• Continuously improve performance engineering skills through self-learning and training.

Skills

JMeter

REST APIs

Java basics

Observability tools

Analytical thinking

Team collaboration

Agile/Scrum

English (B2+)

Tools

Git

CI/CD tools

Linux basics

Job description

Company Background

Our client is a global leader in access solutions and smart home technologies. With over a decade of innovation in the IoT space, the company is a pioneer in connected home solutions, including garage door openers, gate systems, and smart access management tools. One of their flagship innovations is the platform, which allows users to control and monitor their home access systems through connected devices. The current focus is a mobile app designed to support and manage gated communities.

Project Description

The project focuses on performance testing of the middleware service layer powering the client’s connected device platform. The QA Automation Engineer will contribute to a JMeter-based performance testing framework, execute and report performance tests, maintain and enhance the framework, and work closely with DevOps Engineers, Developers, and senior performance engineers to ensure backend, API, and microservices performance meets high reliability standards.

Technologies

JMeterJava basicsREST APIs / HTTPGitWhat You’ll Do

What You’ll Do

• Execute performance, load, stress, and soak tests for backend services, REST APIs, and microservices using JMeter
• Develop and maintain JMeter test scripts under the guidance of senior performance engineers
• Contribute to the performance testing framework by adding new scenarios, reusable components, and test data sets
• Analyze test results, prepare reports, and help identify performance bottlenecks together with Developers and DevOps Engineers
• Use observability tools such as Grafana and Datadog to review dashboards and logs and support root cause analysis
• Document test plans, scenarios, execution results, and findings in a clear and reproducible way
• Collaborate with Developers, DevOps Engineers, and QA peers to ensure performance criteria are met before release
• Participate in Agile ceremonies, including planning, refinement, retrospectives, and daily team communication
• Continuously improve skills in performance engineering, JMeter, and cloud-based system performance through self-learning, training, and knowledge sharing

Job Requirements

• 1+ year of experience in QA, manual or automation
• Basic understanding of performance testing concepts, including common test types and key metrics
• Hands-on exposure to JMeter, including basic test plan structure, script recording, parameterization, and assertions
• Understanding of REST APIs and HTTP basics, including methods, status codes, headers, and JSON payloads
• Basic knowledge of Java and object-oriented programming
• Ability to read and interpret graphs, dashboards, and basic system metrics
• Strong analytical thinking, attention to detail, and problem-solving skills
• Good communication skills and ability to work in a team
• Familiarity with Agile/Scrum software development process
• English level: B2 or higher

Nice to Have

• Basic Linux command-line skills
• Basic understanding of cloud platforms such as AWS, Azure, or GCP
• Exposure to observability or APM tools such as Grafana, Datadog, or CloudWatch
• Understanding of microservices architecture
• Familiarity with CI/CD pipelines such as Azure DevOps, GitHub Actions, or Jenkins
• Familiarity with home automation technologies or IoT

What Do We Offer

• The global benefits package includes: Technical and non-technical training for professional and personal growth
• Internal conferences and meetups to learn from industry experts
• Support and mentorship from an experienced employee to help you professional grow and development
• Health insurance
• English courses
• Sports activities to promote a healthy lifestyle
• Flexible work options, including remote and hybrid opportunities
• Referral program for bringing in new talent
• Work anniversary program and additional vacation days