QA Engineer - Manual, API, Database Testing

TAMILARASAN R

QA Engineer Manual Testing API & Database Testing Playwright (JavaScript)

+91-812******* *******@*****.*** linkedin.com/in/tamilarasan-r-qa github.com/tamil06448 Bangalore, India Immediate Joiner PROFESSIONAL SUMMARY

QA Engineer with 4+ years of experience in Manual, Functional, Regression, API, Database, Web, and Mobile Application Testing within a product-based, multi-tenant SaaS environment. Proven track record designing large test case suites, validating REST APIs with Postman, and confirming backend data accuracy across SQL (PostgreSQL) and MongoDB environments. Strong foundation in Agile Scrum, requirement analysis, defect lifecycle management, root cause analysis, and release validation across a high-cadence production environment. Building hands-on automation capability with Playwright (JavaScript) through self-directed practice, including a Page Object Model framework covering regression scenarios across multiple browser engines. Seeking a QA Engineer role that combines strong manual, API, and database testing ownership with continued growth in automation. TECHNICAL SKILLS

Manual & Functional Testing: Manual Testing, Functional Testing, Regression Testing, Integration Testing, System Testing, Smoke Testing, Sanity Testing, End-to-End (E2E) Testing, User Acceptance Testing (UAT), Exploratory Testing, Web Application Testing, Mobile Application Testing (Android, iOS), Cross-Browser Testing API Testing: Postman, REST API, JSON, HTTP Methods, Status Codes, OAuth2, Bearer Token Authentication, Schema Validation, Negative Testing

Database Testing: SQL, PostgreSQL, MongoDB, Data Validation, CRUD Operations, Aggregation Pipelines Automation Testing: Playwright (JavaScript), Playwright Test Runner, Page Object Model (POM), Locator Strategies, Assertions, Cross-Browser Test Execution, Regression Scenario Automation Programming: JavaScript (ES6), Node.js, npm

Tools & Version Control: Jira, Git, GitHub, Visual Studio Code Test Management & Process: Requirement Analysis, Test Planning, Test Strategy, Test Case Design, Test Execution, Requirement Traceability Matrix (RTM), Bug Reporting, Defect Lifecycle, Root Cause Analysis, Risk-Based Testing, Release Validation, Production Support

Methodologies: Agile Scrum, Sprint Planning, SDLC, STLC PROFESSIONAL EXPERIENCE

Senior QA Engineer — Manual, API & Database Testing Feb 2022 – Jun 2026 Daacoworks Technologies Pvt. Ltd. Product-Based SaaS Company Bangalore, India Project: CMMS Platform (Multi-Tenant SaaS Product) Environment: Web, Mobile, REST APIs, PostgreSQL, MongoDB, Agile Scrum, Jira, Git, GitHub

• Led end-to-end quality assurance across multiple modules of a multi-tenant CMMS SaaS platform, supporting 12+ production releases across web and mobile applications.

• Analyzed business requirements, user stories, and acceptance criteria across 12+ sprint cycles to design test scenarios, test cases, and regression suites aligned with business objectives.

• Designed and maintained 1,200+ manual test cases covering Functional, Regression, Integration, Smoke, Sanity, UAT, Cross- Browser, and End-to-End testing, achieving 95%+ requirement-level test coverage.

• Verified 40+ end-to-end business workflow scenarios covering the complete work order lifecycle, contributing to zero P0 production defects over six consecutive months.

• Conducted cross-browser and cross-device compatibility testing across Chrome, Firefox, Edge, Android, iOS, Windows, and macOS to ensure consistent application behavior.

• Validated 60+ REST API endpoints using Postman, covering CRUD operations, OAuth2/Bearer Token authentication, request/response schema validation, HTTP status codes, and negative testing.

• Performed backend data validation using SQL (PostgreSQL) and MongoDB queries to verify transactional accuracy, business rules, and data consistency across 100+ business scenarios.

• Owned complete regression testing cycles for 12+ production releases, performing release validation, production smoke testing, and deployment verification — reducing post-release defect leakage through structured regression testing.

• Logged and tracked 150+ defects in Jira with detailed reproduction steps, severity classification, and root cause analysis, enabling faster resolution by development teams.

• Collaborated with 10+ developers, product owners, and cross-functional teams to support enterprise customer implementations and tenant-specific configurations.

• Created and maintained a Requirement Traceability Matrix (RTM) covering 1,200+ test cases to ensure traceability between business requirements and test cases.

• Established risk-based test planning and release readiness assessments across 12+ sprint deliveries.

• Investigated production issues, performing root cause validation and release verification for enterprise customer deployments PLAYWRIGHT AUTOMATION (JAVASCRIPT) — HANDS-ON PROJECT WORK Self-directed automation practice projects, available on GitHub (github.com/tamil06448)

• Built a Playwright automation framework in JavaScript using the Page Object Model (POM), with reusable page objects, utility functions, and configuration management.

• Automated 25+ regression scenarios covering Login, Dashboard, User Management, Search, and Form Submission workflows using locators and assertions.

• Implemented wait handling, screenshot-on-failure capture, and HTML reporting to support debugging and maintainability.

• Executed automated test suites using the Playwright Test Runner across Chromium, Firefox, and WebKit.

• Developed reusable test data utilities using JavaScript (ES6, asynchronous programming, arrays, objects, functions, error handling) to build automation helpers.

• Managed automation source code using Git and GitHub with structured branching and commits. OTHER QA PROJECTS

• API Testing with Postman: REST API collections covering CRUD operations, authentication, environment variables, response validation, and automated test scripts.

• Database Validation Repository: SQL and MongoDB CRUD operations, Aggregation Pipelines, Indexing, Lookup, and query validation exercises for backend data validation.

• QA Portfolio & Manual Testing Repository: Test Cases, Test Scenarios, Bug Reports, RTM, Test Plans, Smoke & Regression Checklists, Exploratory Testing examples, and Release Validation documents.

• Additional GitHub repositories: QA Utility Scripts, SQL Practice, MongoDB Practice. DOMAIN EXPERIENCE

CMMS Multi-Tenant SaaS Applications Asset Lifecycle Management Preventive Maintenance Workflow Management Role-Based Access Control Reporting & Analytics Client Customization EDUCATION

Bachelor of Science (B.Sc.) in Computer Science

MGR Arts and Science College, Periyar University Jun 2018 – May 2021

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