Senior QE Engineer

Req ID: 339991 

NTT DATA strives to hire exceptional, innovative and passionate individuals who want to grow with us. If you want to be part of an inclusive, adaptable, and forward-thinking organization, apply now.

We are currently seeking a Senior QE Engineer to join our team in Mexico City, México (MX-MEX), Mexico (MX).

Senior Quality Engineer

Who we are:

NTT DATA America’s strive to hire exceptional, innovative and passionate individuals who want to grow with us.   Launch by NTT DATA is the culmination of the company’s strategy to acquire and integrate the skills, experience, and technology of leading digital companies, backed by NTT DATA’s core capabilities, global reach, and depth.

How You’ll Help Us:

Our clients need digital solutions that will transform their business so they can succeed in today’s hypercompetitive marketplace.  As a team member in our Quality Engineering practice, you will help make these digital solutions come to life by ensuring every deliverable is defect-free.  You will routinely deliver automated testing solutions to clients that will impact their products, customers, and services.

How We Will Help You:

Joining our Quality Engineering practice is not only a job, but a chance to grow your career.  We will make sure to equip you with the skills you need to implement enterprise-grade test automation and help your teams produce robust, defect-free applications that you can be proud of.  Whether it is providing you with training on quality assurance practices, a new programming language, test automation tools, or helping you get certified in a variety of areas, we will help you grow your skills so you can continue to deliver increasingly valuable work.

Once You Are Here, You Will: 

• Design, implement, and execute automation strategies for device simulators to validate device-to-cloud interactions across multiple device families.
• Develop automated test frameworks for REST APIs, messaging flows, telemetry ingestion, command-response handling, and device twin state management.
• Create and maintain containerized simulators to support scalable, portable testing environments.
• Formalize and validate Device-to-Cloud contract standards using schema-based definitions; integrate contract-first validation into CI/CD pipelines.
• Automate primary and alternate path testing, including normal operations, timeouts, rejected commands, ignored responses, OTA updates, and video streaming scenarios.
• Execute long-duration (24–48h) traffic simulations with variable load to validate stability, scalability, and fault tolerance.
• Implement fault and chaos testing for simulators (network drops, throttling, simulated device failures) to validate resilience.
• Partner with Security/Intrusion teams to define and validate secure simulator access policies, including TLS, certificate handling, sandbox isolation, and credential management.
• Collaborate with development teams to reverse engineer device contracts into a common schema-based model, placing them under version control with compliance checks.
• Create and maintain documentation, onboarding guides, and recorded training sessions to enable development teams to extend and adopt simulators.
• Establish dashboards and reporting to track test coverage, schema compliance, performance metrics, and resiliency KPIs.
• Mentor QE and development teams on simulator-driven validation, contract-first testing, and automation best practices.

Basic Qualifications:

• 5+ years of experience in quality engineering and test automation, including at least 2+ years in IoT/device simulation or distributed systems testing.
• Strong programming skills in JavaScript/TypeScript, Java, Python, or C# for test automation.
• Hands-on experience with containerized environments (Docker, Kubernetes) and cloud platforms (like Azure, AWS, or GCP).
• Proven experience with test automation frameworks (Playwright, Selenium, RestAssured, pytest).
• Proficiency in schema validation (OpenAPI, AsyncAPI, JSON Schema) and contract-first testing workflows.
• Experience with performance and load testing (JMeter, Locust, k6).
• Familiarity with chaos testing tools (LitmusChaos, Gremlin) to validate resilience under failure scenarios.
• Knowledge of IoT communication protocols (MQTT, HTTP, JSON request/response).
• Exposure to observability tools (Prometheus, Grafana, ELK, Splunk) to track simulator test results and quality metrics.

Preferred Skills:

• Experience designing or extending device simulators, IoT Hub test harnesses, or schema-driven validation frameworks.
• Background in device contract reverse engineering and source control for schema definitions.
• Knowledge of security testing for device simulators: TLS, secrets management, OAuth2/JWT, RBAC.
• Experience running chaos, resilience, and long-duration stability tests with automated validation.
• Familiarity with GitOps and Infrastructure-as-Code practices (Terraform, Helm).
• Experience mentoring QE and dev teams on automation-first, contract-first, and simulator-based testing approaches.
• Ability to plan and implement scalable test automation strategies for complex distributed IoT systems.

Ideal Mindset:

• Automation-first approach – You eliminate manual validation through scalable test frameworks and simulators.
• Quality advocate – You ensure device simulation improves developer confidence before production.
• Resilience-driven – You embrace chaos and “break things on purpose” to validate robustness.
• Collaborative & cross-functional – You thrive at the intersection of QE, Development, Platform, and Security teams.
• Curious & experimental – You are eager to expand simulation scenarios, improve coverage, and mentor others.
• Proactive & accountable – You take ownership of quality and treat every defect or gap as an opportunity to improve.

#LaunchJobs #Launch Engineering  #LI-NorthAmerica

About NTT DATA

NTT DATA is a $30 billion trusted global innovator of business and technology services. We serve 75% of the Fortune Global 100 and are committed to helping clients innovate, optimize and transform for long term success. As a Global Top Employer, we have diverse experts in more than 50 countries and a robust partner ecosystem of established and start-up companies. Our services include business and technology consulting, data and artificial intelligence, industry solutions, as well as the development, implementation and management of applications, infrastructure and connectivity. We are one of the leading providers of digital and AI infrastructure in the world. NTT DATA is a part of NTT Group, which invests over $3.6 billion each year in R&D to help organizations and society move confidently and sustainably into the digital future. Visit us at us.nttdata.com

Whenever possible, we hire locally to NTT DATA offices or client sites. This ensures we can provide timely and effective support tailored to each client’s needs. While many positions offer remote or hybrid work options, these arrangements are subject to change based on client requirements. For employees near an NTT DATA office or client site, in-office attendance may be required for meetings or events, depending on business needs. At NTT DATA, we are committed to staying flexible and meeting the evolving needs of both our clients and employees. NTT DATA recruiters will never ask for payment or banking information and will only use @nttdata.com and @talent.nttdataservices.com email addresses. If you are requested to provide payment or disclose banking information, please submit a contact us form, https://us.nttdata.com/en/contact-us.

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