Senior Test Engineer

Welcome to Warner Bros. Discovery… the stuff dreams are made of. Who We Are… When we say, “the stuff dreams are made of,” we’re not just referring to the world of wizards, dragons and superheroes, or even to the wonders of Planet Earth. Behind WBD’s vast portfolio of iconic content and beloved brands, are the storytellers bringing our characters to life, the creators bringing them to your living rooms and the dreamers creating what’s next… From brilliant creatives, to technology trailblazers, across the globe, WBD offers career defining opportunities, thoughtfully curated benefits, and the tools to explore and grow into your best selves. Here you are supported, here you are celebrated, here you can thrive. Your New Role: The Senior Test Engineer reports to the Senior Manager, Engineering and is accountable for defining test strategy, building and maintaining automated test coverage, and ensuring end-to-end quality for the services and data platforms that power our advertising technology stack. Your Role Accountabilities: Test Strategy & Automation Design and execute comprehensive test strategies for distributed AdTech systems supporting ad serving, forecasting, targeting, measurement, and yield optimization. • Build and maintain scalable automated test suites across APIs, services, data pipelines, and end-to-end workflows • Develop robust regression coverage integrated into CI/CD pipelines to improve release confidence and reduce production defects • Validate functional and non-functional requirements including performance, reliability, resiliency, and data correctness • Implement automated quality gates, test reporting, and failure diagnostics to accelerate feedback cycles Technical Proficiency • Strong programming skills in at least one language: Python, Java, or Scala • Experience with API automation, integration testing frameworks, and CI/CD tooling • Strong understanding of SQL, data validation, and large-scale data quality testing • Experience with cloud platforms (AWS, Azure, or GCP) and DevOps practices Expectation: engineers scalable quality automation—not just test cases Quality Engineering for Service Integration Ensure reliability and correctness across interconnected AdTech platforms and partner integrations. • Partner with engineering teams to define acceptance criteria and validate complex workflows across ad-serving, campaign management, identity, and measurement systems • Develop and maintain API, contract, and integration test frameworks for internal services and third-party AdTech integrations • Validate latency-sensitive workflows, data consistency, and event-driven processing across distributed systems • Identify edge cases and failure scenarios in real-time and batch processing environments Expectation: proactively identifies integration and system-level risks before production. Quality for Platform Modernization Support modernization initiatives by embedding quality practices into cloud native and service-oriented architectures. • Ensure systems are designed with testability, observability, and automation in mind • Validate scalability, resiliency, failover behavior, and operational readiness of modernized platforms • Implement best practices for test data management, environment stability, and security/compliance validation • Contribute to performance and reliability testing strategies for large-scale distributed systems Expectation: quality scales alongside platform evolution. Collaboration & Technical Guidance Drive a strong quality culture through collaboration, technical rigor, and continuous improvement. • Partner with Product, Engineering, and Operations teams to align on quality goals and release readiness • Perform data-driven defect analysis and contribute to root cause identification and systemic fixes • Mentor junior engineers on automation patterns, testing methodologies, and engineering best practices • Promote shared ownership of quality across teams and development lifecycle Expectation: improves both system quality and engineering maturity across the organization. Qualifications & Experience • Education: Bachelor’s or Master’s degree in Computer Science, Engineering, or related field. • Quality Engineering Expertise: 5+ years in test engineering / quality engineering for distributed systems, with exposure to AdTech or high-scale platforms preferred. • Hands-On technical experience: Hands-on experience with automation in Java/Scala/Python; strong knowledge of API testing, integration testing, and data validation using SQL and NoSQL databases. Experience testing streaming/data processing systems (e.g., Kafka/Spark) and cloud platforms (AWS/GCP/Azure). • Quality Practices: Experience designing test plans, defining quality gates in CI/CD, managing test environments/test data, and driving defect triage through root-cause analysis. • Collaboration & Mentorship: Demonstrated ability to partner with product, platform, and data teams, while mentoring engineers on quality and automation best practices. How We Get Things Done… This last bit is probably the most important! Here at WBD, our guiding principles are the core values by which we operate and are central to how we get things done. You can find them at www.wbd.com/guiding-principles/ along with some insights from the team on what they mean and how they show up in their day to day. We hope they resonate with you and look forward to discussing them during your interview. Championing Inclusion at WBD Warner Bros. Discovery embraces the opportunity to build a workforce that reflects a wide array of perspectives, backgrounds and experiences. Being an equal opportunity employer means that we take seriously our responsibility to consider qualified candidates on the basis of merit, regardless of sex, gender identity, ethnicity, age, sexual orientation, religion or belief, marital status, pregnancy, parenthood, disability or any other category protected by law. If you’re a qualified candidate with a disability and you require adjustments or accommodations during the job application and/or recruitment process, please visit our accessibility page for instructions to submit your request.