Senior Testing Engineer

XenonStack; Mohali; On-site; INR 1,500,000 - 2,200,000; Full time

Job summary

XenonStack is seeking a Senior Testing Engineer to design and execute comprehensive test plans, build automation frameworks, and assure quality, security, and performance of AI platforms.

The role requires 4–7 years of software testing experience, expertise in automation (Selenium, Cypress, Playwright), API testing, CI/CD, cloud platforms, and a commitment to precision and reliability in enterprise-grade systems.

Qualifications

• 4-7 years of experience in software testing and QA engineering.
• Strong understanding of testing methodologies (functional, regression, integration, system).
• Hands‑on with automation frameworks (Selenium, Cypress, Playwright, JUnit, TestNG).
• Strong experience in API testing tools (Postman, RestAssured) and performance testing tools (JMeter, Locust).
• Knowledge of CI/CD tools (Jenkins, GitLab CI, CircleCI).
• Familiarity with cloud platforms (AWS, GCP, Azure).

Responsibilities

• Test Planning & Execution: Design and execute test cases, test plans, and scenarios across functional, regression, and integration testing.
• Identify, document, and track defects, risks, and edge cases.
• Automation Frameworks: Develop and maintain test automation scripts and frameworks (Selenium, Cypress, Playwright, or similar).
• Integrate automated testing into CI/CD pipelines for faster, reliable deployments.
• System & API Testing: Perform end-to-end, API, and data validation testing for enterprise AI workflows.
• Performance & Reliability: Conduct load, stress, and performance testing to ensure scalability.
• Collaborate with DevOps to monitor systems and validate production reliability.
• Work with product managers, developers, and AI engineers to ensure requirements are testable, traceable, and aligned with enterprise standards.
• Partner with security teams to perform compliance and vulnerability testing.
• Analyze test coverage and defect metrics; recommend quality improvements.
• Advocate for shift-left testing to embed QA early in the SDLC.

Skills

Software Testing

QA Engineering

Automation Frameworks

API Testing

CI/CD

Cloud Platforms

Security Testing

AI/ML Testing

Tools

Selenium

Cypress

Playwright

JUnit

TestNG

Postman

RestAssured

JMeter

Locust

GitLab CI

Jenkins

Docker

Kubernetes

Job description

XenonStack is the fastest-growingData and AI Foundry for Agentic Systems, enabling people and organizations to gainreal-time and intelligent business insights.

Inference AI Infrastructure for Agentic Systems→nexastack.ai

Our mission: Accelerate the world’s transition toAI + Human Intelligenceby ensuring our platforms arereliable, resilient, and enterprise-ready.

THE OPPORTUNITY

We are looking for aSenior Testing Engineerwith4-7 years of experiencein software testing and automation. You will be responsible for designing and executing comprehensive test plans, implementing automation frameworks, and ensuring thequality, security, and performanceof XenonStack’s Agentic AI platforms.

This role is ideal for someone who thrives onprecision, detail, and excellence, and who wants to contribute to thetrust and reliability of enterprise-grade AI systems.

KEY RESPONSIBILITIES

Test Planning & Execution

Design and executetest cases, test plans, and scenariosacross functional, regression, and integration testing.

Identify, document, and trackdefects, risks, and edge cases.

Automation Frameworks

Develop and maintaintest automation scripts and frameworks(Selenium, Cypress, Playwright, or similar).

Integrate automated testing intoCI/CD pipelinesfor faster, reliable deployments.

System & API Testing

Performend-to-end, API, and data validation testingfor enterprise AI workflows.

Performance & Reliability

Conductload, stress, and performance testingto ensure scalability.

Collaborate with DevOps to monitor systems and validate production reliability.

Work with product managers, developers, and AI engineers to ensure requirements aretestable, traceable, and aligned with enterprise standards.

Partner with security teams to performcompliance and vulnerability testing.

Analyzetest coverage and defect metrics; recommend quality improvements.

Advocate forshift-left testingto embed QA early in the SDLC.

SKILLS & QUALIFICATIONS

Must-Have

4-7 years of experience insoftware testing and QA engineering.

Strong understanding oftesting methodologies (functional, regression, integration, system).

Hands‑on withautomation frameworks(Selenium, Cypress, Playwright, JUnit, TestNG).

Strong experience inAPI testing tools(Postman, RestAssured) andperformance testing tools(JMeter, Locust).

Knowledge ofCI/CD tools(Jenkins, GitLab CI, CircleCI).

Familiarity withcloud platforms (AWS, GCP, Azure).

Good-to-Have

Experience testingAI/ML systems, including data validation and model accuracy.

Exposure tocontainerized applications(Docker, Kubernetes).

Knowledge ofsecurity and compliance testing(SOC2, GDPR, PCI-DSS).

Background inBFSI, GRC, or large-scale enterprise systems.

WHY SHOULD YOU JOIN US?

Agentic AI Product Company

Test and validate cutting-edge AI systems that redefine enterprise adoption.

A Fast-Growing Category Leader

Join one of the fastest-growingAI Foundries, delivering AI platforms trusted by Fortune 500 enterprises.

Career Mobility & Growth

Opportunities to grow into roles such asQA Lead, Test Automation Architect, or Reliability Engineer.

Global Exposure

Work onenterprise-scale testing challengesacross BFSI, Telecom, Healthcare, and Manufacturing.

Create Real Impact

Ensuretrust, reliability, and resiliencein mission‑critical AI agents deployed in production.

Culture of Excellence

Our values -Agency, Taste, Ownership, Mastery, Impatience, and Customer Obsession- empower you to innovate and drive quality.

Responsible AI First

Play a critical role in buildingtrustworthy, explainable, and ethical AI systems.

XENONSTACK CULTURE - JOIN US & MAKE AN IMPACT!

At XenonStack, we believe inshaping the future of intelligent systems. We foster aculture of cultivationbuilt on bold, human‑centric leadership principles, wheredeep work, simplicity, and adoptiondefine everything we do.

Our Cultural Values

Agency- Be self‑directed and proactive.

Taste- Sweat the details and build with precision.

Ownership- Take responsibility for outcomes.

Mastery- Commit to continuous learning and growth.

Impatience- Move fast and embrace progress.

Customer Obsession- Always put the customer first.

Our Product Philosophy

Obsessed with Adoption- Making AI accessible and enterprise‑ready.

Obsessed with Simplicity- Turning complex quality challenges into seamless, reliable processes.

Be a part of our mission toaccelerate the world’s transition to AI + Human Intelligence- by ensuring every interaction with AI is reliable, trustworthy, and enterprise‑ready.