PlayStation
Senior Software Development Engineer in Test (AI/ML)
Skills
4 months ago
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Important information
Contract type:
Permanent
Salary:
$183,000 – $274,600 / year
Location:
San Mateo, CA, USA
Work mode:
Onsite
Published on:
21 October 2026
What they need
We are hiring a Sr Software Engineer in Test specializing in ML/AI quality, including automation for model evaluation, LLM-assisted test generation, and validation of AI-powered workflows
The role includes guiding quality strategy and developing automation frameworks
You will also manage implementation for complex, cross-functional, machine learning-powered products and services
This role involves more than test development
You will lead quality initiatives from start to finish, ensuring teams stay synchronized, dependencies are managed, and releases are delivered confidently
You will work closely with ML, engineering, product, and infrastructure teams
You will shape how quality is built, monitored, and expanded while leading embedded QE efforts within projects
ML-powered services and platform components
Use LLMs and other AI-assisted techniques to generate, expand, and maintain high-value test cases for ML-powered workflows
Design scenario-based test suites for AI features, including adversarial prompts, edge cases, ambiguous inputs, and underrepresented user scenarios
Lead QE efforts for multi-functional projects, driving risk assessment, dependency management, and release readiness
Design, develop, and maintain scalable automation frameworks for backend services, APIs, and ML inference systems using Python and/or Java
Build automated validation for ML and LLM outputs, including ranking behavior, score distributions, prompt/response quality, hallucination indicators, and probabilistic model evaluation
Debug test failures, service anomalies, model inconsistencies, and AI behavior regressions to identify root causes and drive resolution
Perform functional, integration, regression, API, end-to-end, performance, and reliability testing for distributed systems
Improve automation reliability, reduce flakiness, and optimize execution efficiency
Partner with engineering and ML teams to integrate automated testing into CI/CD pipelines and release workflows
Collaborate across teams to establish scalable quality standards, tooling, and guidelines
Experience with CI/CD systems and test pipelines (Jenkins, GitHub Actions, etc.)
Bachelor’s degree in Computer Science or equivalent
Passion for scalable, reliable, and maintainable automation systems
Strong understanding of SDLC, Agile methodologies, and release processes
Preferred qualifications
Experience using LLMs to generate, transform, and prioritize test cases for AI-powered experiences
Experience with AI evaluation tooling, prompt evaluation frameworks, model monitoring, or human-in-the-loop review workflows
5+ years of experience as an SDET or QE engineer focused on backend and distributed systems
Proficiency in Python, Java, JS or similar languages for automation development
Ability to influence engineering teams and promote quality guidelines
Strong experience testing RESTful APIs, microservices, and distributed architectures
Practical understanding of how to test non-deterministic AI systems and separate model variance from quality regressions
Excellent problem-solving, debugging, and communication skills
Familiarity with databases, monitoring, and observability tools
Hands-on experience with automation frameworks such as pytest, JUnit, Selenium, Playwright, Cypress, or Appium
Proven risk management and dependency coordination skills
Experience with cloud and container technologies (AWS, GCP, Kubernetes, Docker)
Ability to drive quality across complex cross-functional initiatives
Strong combination of automation engineering and delivery ownership
What sets you apart
Familiarity with ML infrastructure, data pipelines, or model-serving platforms (Seldon, KServe, Ray Serve, etc.)
Experience validating ML outputs using statistical analysis or scenario-based testing approaches
Prior work in content moderation ML, security, fraud detection, or adversarial ML
Experience testing high-scale, low-latency online services
Experience with Databricks or similar ML platform tooling
Familiarity with Node.js, React, or modern frontend technologies
Experience testing mobile, console, or other non-PC platforms
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