Playwright Engineer (Contract)
Tangspac Consulting · Singapore
Responsibillities* Define and execute end to end test strategies covering UI workflows, backend APIs, integrations and agentic interfaces.* Test conversational and agentic behaviour including multi turn context, tool selection, tool inputs and outputs, state transitions, retries, timeouts, handoffs, approvals and recovery from partial failure.* Validate GenAI responses for task completion, grounding, relevance, consistency, citation behaviour and safe failure, while recognising that outputs can be non deterministic.* Perform functional, integration, regression, exploratory, negative, resilience and basic performance testing across application layers.* Design API tests for contracts, authentication, authorisation, validation, error handling, idempotency, rate limits and downstream failures.* Test UI behaviour across browsers and realistic user journeys, including loading states, interrupted sessions, feedback capture, accessibility basics and clear error communication.* Create and maintain test data, reusable test scenarios and traceable evidence suitable for enterprise release governance.* Use logs, traces, request and response payloads and observability tools to isolate defects and distinguish application, model, data, integration and platform issues.* Automate the tests that materially reduce cycle time, manual effort or production risk, and keep unstable or low value scenarios out of the automation suite.* Communicate defects and quality risks clearly to engineers, product owners, GenAI specialists, security teams and business stakeholders.* Provide an evidence based release recommendation, including known limitations, residual risks and areas requiring monitoring.* Partner with product owners, business users, architects, engineers and GenAI specialists to define the problem, target user journeys and expected business outcomes.* Analyse proposed GenAI use cases and determine where deterministic application logic, retrieval, workflow orchestration, tool using agents or human approval should be used.Core Requirements* 5 to 8 years of experience in software quality engineering, test engineering or a similar hands on role covering complex applications.* Strong experience testing web user interfaces, backend services and REST APIs.* Hands on ability with API tools and automation frameworks such as Postman, REST Assured, pytest, Playwright, Cypress, Selenium or equivalent.* Working knowledge of Java, Python, JavaScript or TypeScript sufficient to build, review and troubleshoot test automation.* Strong test analysis skills, including requirements review, risk assessment, boundary analysis, negative testing and traceability.* Experience validating distributed systems and integrations, including asynchronous processing, queues, batch jobs and downstream dependencies.* Ability to inspect logs, traces, network calls, payloads and database records to identify the actual failure point.* Experience with Git, pull requests, CI/CD pipelines, test reporting and defect management tools.* Understanding of security and privacy testing fundamentals, including access control, sensitive data handling, input validation and auditability.* Strong stakeholder communication and the confidence to challenge weak designs, vague expected outcomes and premature release decisions.