Senior Automation QA (JavaScript) Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Automation QA (JS) Engineer based in India.

As a Senior Automation QA Engineer, you will help establish the quality foundation for an enterprise-grade AI Agent Development Platform. You will design and own automation across frontend, backend, long-running workflows, multi-tenant infrastructure, security boundaries, and performance requirements. Because the platform relies on non-deterministic AI behavior, you will develop sophisticated testing approaches based on statistical assertions, semantic evaluation, and adversarial scenarios rather than simple expected-output checks. Your work will directly influence release readiness, client milestone sign-offs, and production reliability. You will collaborate closely with AI engineers, platform engineers, and evaluation specialists to embed quality and testability from the earliest design stages. This is a high-impact opportunity to shape reusable quality engineering practices for rapidly evolving AI-powered systems.

You will own the automation strategy across the platform, building reliable, reproducible, and scalable test infrastructure that provides defensible evidence of product quality and production readiness.

• Design, build, and maintain automated test suites covering frontend and backend functionality.
• Develop contract tests that protect the agent-developer experience as SDKs and platform capabilities evolve.
• Automate testing of long-running Temporal workflows, including worker failures, provider outages, retry storms, and other injected failures.
• Verify durable execution guarantees, including zero lost workflow runs, idempotency, recovery behavior, and correct compensation or saga execution.
• Automate multi-tenant isolation testing, including cross-tenant data access, configuration leakage, and cost-attribution correctness.
• Validate agent execution sandboxing and egress controls through negative testing of unauthorized tool calls and network destinations.
• Design testing strategies for LLM-driven and other non-deterministic behavior using statistical assertions, repeated-run consistency, semantic similarity scoring, and confidence thresholds.
• Identify and quarantine flaky tests while distinguishing expected model variance from genuine regressions.
• Build and maintain adversarial test corpora covering prompt injection, tool-call hijacking, data-exfiltration scenarios, and other AI security risks.
• Test Human-in-the-Loop escalation mechanisms to ensure confidence thresholds trigger correctly and gated or irreversible actions cannot proceed without authorization.
• Partner with evaluation teams on golden datasets, synthetic-data pipelines, and CI integrations that make AI quality measurable and repeatable.
• Automate verification of performance and reliability requirements, including p95 invocation overhead, concurrency targets, queue backpressure, and LLM provider failover.
• Use Langfuse, OpenTelemetry, and tracing data to validate trace completeness, token and cost accounting, and anomalous-run alerting.
• Integrate automated tests into CI/CD pipelines as hard release gates with per-metric regression detection.
• Produce auditable and reproducible test-evidence packages that support client milestone sign-offs.
• Collaborate with AI and platform engineers during system design to establish acceptance criteria, testability, and observability requirements.
• Maintain test environments, mocked LLM and provider layers, and synthetic data generators to keep testing efficient, deterministic where possible, and cost-effective.
• Mentor mid-level QA engineers and develop reusable AI testing frameworks, patterns, and best practices.
• Contribute to the broader quality engineering practice through knowledge sharing and technical enablement.

Requirements:

The ideal candidate is an experienced automation engineer with strong framework-building capabilities, advanced knowledge of AI/LLM testing, and the ability to assess complex systems from both reliability and adversarial perspectives.

• 8+ years of experience in test automation, API testing, and building reusable test frameworks adopted by other engineers.
• Strong proficiency in Playwright and TypeScript is mandatory.
• Extensive experience developing Playwright/TypeScript-based automation frameworks and integrating them into secure CI/CD environments.
• Hands-on experience testing LLM-powered or other non-deterministic systems, including statistical assertions, semantic scoring, and model-variance management.
• Deep understanding of Large Language Model behavior, prompt sensitivity, and common RAG failure modes.
• Strong experience testing asynchronous and event-driven systems, including failure injection, idempotency verification, and eventual-consistency assertions.
• Experience with Temporal or a similar workflow orchestration engine is highly desirable.
• Strong CI/CD expertise, particularly with GitHub Actions or equivalent platforms, and experience establishing automated release gates.
• Solid SQL and data-validation skills, including the ability to build synthetic test-data pipelines and assess dataset quality.
• Strong analytical skills and experience interpreting evaluation scores to provide actionable feedback to AI engineers and support prompt tuning.
• Security-focused and adversarial mindset, with familiarity with prompt-injection techniques or strong application security testing experience.
• Ability to determine appropriate testing depth under delivery and milestone pressure and confidently communicate quality evidence to technical and non-technical stakeholders.
• Strong understanding of automation strategy, software quality principles, debugging, and testability.
• Ability to work collaboratively with AI engineers, platform engineers, product teams, and evaluation specialists.
• Strong communication, mentoring, and knowledge-sharing skills.
• Experience working in fast-paced, cross-functional engineering environments.

Preferred qualifications include:

• Experience with performance and load-testing tools such as k6 or Locust.
• Experience testing multi-tenant SaaS isolation and security boundaries.
• Familiarity with AI evaluation and observability platforms such as Langfuse, LangSmith, Promptfoo, DeepEval, or Arize Phoenix.
• Experience producing compliance evidence for frameworks such as SOC 2 or GDPR.
• Experience with accessibility testing, including Section 508 or WCAG.
• Familiarity with Commercial Real Estate workflows, lease accounting, CAM reconciliation, or document-extraction systems.
• Experience using LLMs to generate test cases, adversarial payloads, or synthetic documents.
• Experience testing high-concurrency background processing within agentic systems.
• Experience with qTest or similar test-management platforms.

Benefits:

• Remote work opportunity based in India.
• Opportunity to work on an enterprise-grade AI and Agent Development Platform.
• High-impact role where automated testing directly influences release gates and client milestone decisions.
• Exposure to advanced AI/LLM testing, agent evaluation, distributed workflows, security testing, and observability.
• Opportunity to work with technologies such as Playwright, TypeScript, Temporal, Langfuse, OpenTelemetry, CI/CD platforms, and modern cloud infrastructure.
• Strong professional community and collaborative, open-door working environment.
• Access to internal meetups, conferences, workshops, Udemy, language courses, and company-paid certifications.
• Opportunities for internal mobility and exposure to diverse technology domains and large-scale projects.
• Company-paid medical insurance.
• Mental health support.
• Financial and legal consultation support.
• Opportunity to collaborate with global engineering teams and work on technology with international impact.

We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.

We appreciate your interest and wish you the best!

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