Vaibhav is available for hire
Hire VaibhavVaibhav Jain
Verified Expert in Engineering
QA Engineer and Developer
Delhi, India
Toptal member since June 16, 2022
Bio
Vaibhav is a results-oriented software professional with 17+ years of experience as a QA expert and technical business analyst. He's worked for influential organizations such as SAP, Airbus, Volvo Cars, MoneyHero Group, DeliverHero, Harley-Davidson, Bosch, Aon, Genpact, and Aristocrat Technologies across various domains and projects. With excellent logical and analytical skills, Vaibhav specializes in QA processes and methodologies, requirement gathering, documentation, and client handling.
Portfolio
Freelance
Analysis, User Requirements, System Requirements, User Acceptance Testing (UAT)...
Delivery Hero - Vendor
Quality Assurance (QA), Manual QA, API Testing, Postman...
55 REDEFINED LTD
User Acceptance Testing (UAT), UX Testing, Quality Assurance (QA)...
Experience
- Manual QA - 15 years
- Test Case Creation - 13 years
- Defect Management - 10 years
- Analysis - 10 years
- SQL - 9 years
- User Acceptance Testing (UAT) - 8 years
- User Requirements - 8 years
Work Experience
QA Expert and Technical Business Analyst
2016 - PRESENT
Freelance
- Delivered various projects on time, conducted estimations, and handled customers.
- Managed the QA team, planned the test documentation, and oversaw test executions and quality.
- Supervised many activities, including low-code development, code debugging, environment setup, UI testing, and user acceptance testing.
- Gathered requirements and change requests, followed the Agile principle, and reported sprint progress to clients.
- Oversaw data management, defect management, gap analysis, risk analysis, resource allocations, and dependencies resolutions.
- Trained and mentored new associates and conducted peer reviews of the deliverables.
Technologies: Analysis, User Requirements, System Requirements, User Acceptance Testing (UAT), Test Management, QA Leadership, SQL, Jira, TFS, ClickUp, Estimations, Rapid Delivery, Resource Management, Low Code, Agile, Scrum Master, Business Requirements, Databases, Defect Management, GAP Analysis, Risk Analysis, Quality Assurance (QA), Manual Testing, iOS, Android, QA Testing, Manual Software Testing, Test Cases, Test Case Creation, Black Box Testing, Black Box Development, Test Case Development, Firmware, Leadership, Mobile App Testing, Website Testing, BrowserStack, Data Validation, ETL, BigQuery, Google BigQuery, Manual QA, Testing, Regression Testing, Functional Testing, Asana, Shopify, eCommerce, Amazon Web Services (AWS), Gaming Platforms, Embedded Systems, Integration Testing, A/B Testing, Vue, Leading Quality Assurance (LQA), Image Manipulation, Java, Selenium, Best Practices, E2E Testing, REST APIs, Web App Testing, Acceptance Testing, Postman, Documentation, Unit Testing, Git, TestRail, Relational Databases, Software QA, Software Testing, Azure, HIPAA Compliance, Appium, Website QA, CI/CD Pipelines, Test Scenarios, Agile Software Testing, Notion, Data Quality Management, Data Quality Analysis, Data-driven Testing, Cross-browser Testing, Mobile, AUTOSAR, Firmware over the Air (FOTA), ISO 26262, PHP, Test Scripting, Data Analysis, Non-functional Testing, Confluence, Scripting, Programming, Complex Problem Solving, Analytical Thinking, Testing Strategy, UI Testing, API Testing, DevOps, Cypress, Automated Testing, Agile QA, Detail-oriented, User Interface (UI), User Experience (UX), Behavior-driven Development (BDD), Ruby on Rails (RoR), RSpec, QA Automation, Test Automation, Test Documentation, Quality Auditing, GitHub, Testsigma, Test Engineering, Requirement Traceability Matrices, Mobile Applications, HTML, Gaming, Smoke Testing, Databricks, Quality Assurance Management, Quality Management, Wearables, Playwright, Swagger, Web, Cursor AI, Artificial Intelligence (AI), Event-driven Architecture, Azure DevOps, Database Testing, Observability, ETL Testing
Manual QA Tester
2025 - 2025
Delivery Hero - Vendor
- Validated end-to-end data flows across multiple internal systems and identified critical mismatches, improving data accuracy and ensuring smooth order processing for a high-volume food delivery platform.
- Collaborated across time zones to clarify requirements, report defects with clear reproducible steps, and reduced turnaround time for issue resolution through consistent stakeholder communication and independent problem-solving.
- Executed comprehensive functional, regression, and API testing across AWS-integrated services, detecting and reporting defects with high-quality documentation that strengthened release stability and reduced production issues.
Technologies: Quality Assurance (QA), Manual QA, API Testing, Postman, Amazon Web Services (AWS), SQL, Artificial Intelligence (AI), Event-driven Architecture
UAT Tester
2024 - 2025
55 REDEFINED LTD
- Validated the entire beta release and successfully ensured on-time delivery.
- Collaborated with developers and provided detailed support to expedite issue resolution.
- Developed comprehensive test cases, test plans, and regression scenarios for the alpha and version 1 releases.
Technologies: User Acceptance Testing (UAT), UX Testing, Quality Assurance (QA), Detail-oriented, Content Management Systems (CMS), User Experience (UX), User Interface (UI), Artificial Intelligence (AI)
QA Engineer (via Toptal)
2023 - 2024
CAG Regional Singapore Pte. Ltd.
- Managed the majority of tasks in my domain independently, ensuring a high level of quality and efficiency.
- Utilized Jira effectively to plan tasks, report bugs, and design test cases.
- Managed multiple go-lives successfully without allowing a single defect to pass through the test environment.
Technologies: Quality Assurance (QA), Manual QA, Manual Testing, Automation Tools, Katalon, Selenium, Appium, Cucumber, JUnit, TestRail, Node.js, PHP, Java, Jira, Confluence, TeamCity, Scripting, Programming, Agile QA, Detail-oriented, User Interface (UI), User Experience (UX), Test Documentation, Quality Auditing, Test Engineering, Mobile Applications, Smoke Testing, Swagger, Web, Playwright
Senior Quality Engineer
2015 - 2016
Aristocrat Technologies Australia
- Tested mobile apps, performed code debugging and UI testing, and wrote documentation.
- Managed the QA team by estimating deliverables and allocating resources.
- Conducted peer reviews of the deliverables and trained and mentored new associates.
- Discussed requirements with the product team, developing value adds and implementation plan.
Technologies: Mobile App Testing, Debugging, Visual Studio .NET, Requirements, QA Leadership, Test Management, Game Design Documentation, Estimations, Resource Allocation, UI Testing, Quality Assurance (QA), Manual Testing, iOS, Android, QA Testing, Manual Software Testing, Test Cases, Test Case Creation, Black Box Testing, Black Box Development, Test Case Development, Leadership, Website Testing, Data Validation, ETL, BigQuery, Google BigQuery, Manual QA, Testing, Regression Testing, Functional Testing, Asana, Shopify, eCommerce, Amazon Web Services (AWS), Gaming Platforms, Integration Testing, A/B Testing, Leading Quality Assurance (LQA), Best Practices, E2E Testing, Web App Testing, Acceptance Testing, Documentation, Unit Testing, TestRail, Software QA, Software Testing, Azure, Website QA, Test Scenarios, Agile Software Testing, Data Quality Management, Data Quality Analysis, Data-driven Testing, Game Testing, Mobile, Test Scripting, Data Analysis, Data Analytics, Non-functional Testing, Confluence, Scripting, Programming, Complex Problem Solving, Analytical Thinking, Testing Strategy, DevOps, Agile QA, Detail-oriented, User Interface (UI), User Experience (UX), Behavior-driven Development (BDD), Test Documentation, Quality Auditing, Test Engineering, Requirement Traceability Matrices, Mobile Applications, HTML, Gaming, Smoke Testing, Quality Assurance Management, Quality Management
Senior Quality Engineer
2013 - 2015
Aptara
- Drafted project estimations and tracked and maintained deliverables. Managed defects, triage, and prioritizations.
- Interacted with the clients to gather requirements.
- Created and designed the functional requirement documentation and test plans.
- Oversaw QA management, estimations, resource allocations, resolving dependencies, and on-time deliveries.
Technologies: HP Quality Center (QC), User Stories, Test Management, QA Leadership, User Acceptance Testing (UAT), Defect Management, Estimations, SQL, Resource Allocation, Data Handling, Manual Testing, iOS, Android, QA Testing, Manual Software Testing, Quality Assurance (QA), Test Cases, Test Case Creation, Black Box Testing, Test Case Development, Leadership, Mobile App Testing, Website Testing, BrowserStack, Data Validation, ETL, Manual QA, Testing, Regression Testing, Functional Testing, Integration Testing, A/B Testing, Acceptance Testing, Documentation, Unit Testing, Software QA, Software Testing, Website QA, Test Scenarios, Data-driven Testing, Test Scripting, Data Analysis, Data Analytics, Complex Problem Solving, Analytical Thinking, Testing Strategy, DevOps, Test Documentation, Smoke Testing, Quality Assurance Management, Quality Management
Lead Consultant
2010 - 2013
Genpact
- Created and designed the test plan and test cases and conducted peer reviews. Executed tests and debugged them.
- Prepared the testing environment and tested data to ensure complete test coverage.
- Documented and debugged the test results when potential system errors or defects were encountered during testing and production verification.
- Trained and mentored new associates as per project requirements.
- Gathered requirements and wrote user acceptance test cases. Coordinated any change requests or enhancements between the end users and team.
Technologies: Test Planning, Test Management, Test Cases, Reviews, User Acceptance Testing (UAT), Technical Requirements, User Requirements, Training, Databases, Mainframe, Analysis, Defect Management, Estimations, Environment, Quality Assurance (QA), Manual Testing, QA Testing, Manual Software Testing, Test Case Creation, Black Box Testing, Black Box Development, Test Case Development, Website Testing, Manual QA, Testing, Regression Testing, Functional Testing, Integration Testing, A/B Testing, Postman, Documentation, Unit Testing, ISTQB, Relational Databases, Software QA, Software Testing, Test Scenarios, Data-driven Testing, Complex Problem Solving, Analytical Thinking, Behavior-driven Development (BDD), Test Documentation, Quality Assurance Management, Quality Management
Senior Set-up Configuration Analyst
2009 - 2010
Aon
- Implemented and supported defined contribution functionality on the total benefit system (TBA).
- Played a key role in creating and designing test cases and executing and debugging them.
- Prepared the testing environment and test data to ensure complete test coverage.
- Conducted peer reviews of the deliverables before they were delivered to the client to ensure quality. Created and maintained the databases.
Technologies: Manual QA, SQL, Analysis, Analytics, Testing, Test Cases, Test Case Creation, Test Case Execution, Defect Management, Quality Assurance (QA), Manual Testing, Black Box Testing, Regression Testing, Functional Testing, Unit Testing, Software QA, Software Testing
Project History
Medicare Claim Processing
A massive project for one of the biggest healthcare providers in the USA and my company started it from scratch, establishing a team of around 15 QA persons where my responsibility was interacting with clients for requirements and managing the complete QA team and process.
Since many compliances and sensitive data were involved, the project became more challenging with strict timelines. To complete everything within deadlines, I applied robust processes such as reviews after every step of development and QA and ensured that detailed documentation was completed.
I regularly interacted with clients and reported the day-to-day progress and accompanying documents. It allowed us to identify gaps and issues at very early stages, which reduced lots of rework while not affecting the delivery timelines.
Our client was delighted with the communication and documentation we did for every stage of development, QA process, and product quality.
Since many compliances and sensitive data were involved, the project became more challenging with strict timelines. To complete everything within deadlines, I applied robust processes such as reviews after every step of development and QA and ensured that detailed documentation was completed.
I regularly interacted with clients and reported the day-to-day progress and accompanying documents. It allowed us to identify gaps and issues at very early stages, which reduced lots of rework while not affecting the delivery timelines.
Our client was delighted with the communication and documentation we did for every stage of development, QA process, and product quality.
Multiple Freelance Projects
An independent QA consultant since 2016, I bring 17+ years of software testing experience to international clients across IAM/PAM, SaaS, automotive, healthcare, gaming, and financial services. Engagements include EmpowerID, supporting major clients SAP and Airbus, alongside work for MoneyHero, Delivery Hero, Volvo Cars, and Harley-Davidson.
I lead QA strategy, test planning, functional and regression testing, UAT, API validation, and SQL-based data verification for complex applications and integrations. My work spans identity and access management, business workflows, customer platforms, and enterprise systems, collaborating with distributed teams to identify risks and support reliable releases.
I combine hands-on testing with QA leadership, stakeholder coordination, and process improvement. My toolkit includes Jira, Azure DevOps, Postman, SQL, Selenium, Cypress, and Playwright, supported by AI-assisted workflows for test design, defect analysis, and automation.
I lead QA strategy, test planning, functional and regression testing, UAT, API validation, and SQL-based data verification for complex applications and integrations. My work spans identity and access management, business workflows, customer platforms, and enterprise systems, collaborating with distributed teams to identify risks and support reliable releases.
I combine hands-on testing with QA leadership, stakeholder coordination, and process improvement. My toolkit includes Jira, Azure DevOps, Postman, SQL, Selenium, Cypress, and Playwright, supported by AI-assisted workflows for test design, defect analysis, and automation.
Workshop Management Software - Automobile
Started this project from scratch and was involved in the process of requirement gatherings to user acceptance testing.
My role was to identify different modules, user needs, reports, etc., which would be useful for end-users and add value to the product. Activities included:
• Drafting all user requirements and identified features into requirement documents/test plans.
• Communicating with the development team and peers about all issues.
• Regularly interacting with end-users to identify gaps and concerns.
• Handling the complete QA process, defect cycle, and UAT to maintain the quality of the product.
My role was to identify different modules, user needs, reports, etc., which would be useful for end-users and add value to the product. Activities included:
• Drafting all user requirements and identified features into requirement documents/test plans.
• Communicating with the development team and peers about all issues.
• Regularly interacting with end-users to identify gaps and concerns.
• Handling the complete QA process, defect cycle, and UAT to maintain the quality of the product.
Education
2009 - 2012
Master's Degree in Information Systems
Institute of Management Technology, Ghaziabad - Ghaziabad, Uttar Pradesh, India
2004 - 2008
Bachelor's Degree in Computer Science
Maharshi Dayanand University - Haryana, India
Skills
Libraries/APIs
REST APIs, Playwright, Vue, Node.js
Tools
Jira, Postman, Confluence, BigQuery, Asana, TestRail, Notion, HP Quality Center (QC), Visual Studio .NET, TFS, Slack, Visual Studio, BrowserStack, Git, Katalon, Cucumber, TeamCity, RSpec, GitHub
Languages
SQL, HTML, C++, JavaScript, Java, PHP
Paradigms
Testing, Manual Testing, Functional Testing, Unit Testing, Software Testing, Data-driven Testing, User Acceptance Testing (UAT), Agile, ETL, Best Practices, E2E Testing, Acceptance Testing, DevOps, Behavior-driven Development (BDD), Event-driven Architecture, Azure DevOps, HIPAA Compliance, Non-functional Testing, Automated Testing, Test Automation
Frameworks
Swagger, Selenium, Appium, Cypress, JUnit, Ruby on Rails (RoR)
Platforms
iOS, Android, Shopify, Amazon Web Services (AWS), Azure, Mobile, Databricks, Web, Windows, Testsigma
Storage
Databases, Data Validation, Relational Databases, PostgreSQL, Database Testing, MySQL, MSSQLCE
Other
Manual QA, Analysis, Test Cases, Test Case Creation, Test Case Execution, Defect Management, Test Planning, Mobile App Testing, Quality Assurance (QA), QA Testing, Manual Software Testing, Black Box Testing, Test Case Development, Regression Testing, Integration Testing, Leading Quality Assurance (LQA), Documentation, Software QA, Test Scenarios, Agile Software Testing, Test Scripting, Analytical Thinking, Agile QA, Test Documentation, Smoke Testing, Quality Assurance Management, Quality Management, Analytics, Reviews, Technical Requirements, User Requirements, Training, Estimations, QA Leadership, UI Testing, API Testing, Black Box Development, Firmware, Leadership, Website Testing, Google BigQuery, eCommerce, Gaming Platforms, Embedded Systems, A/B Testing, Image Manipulation, Web App Testing, UX Testing, ISTQB, Website QA, Data Quality Management, Data Quality Analysis, Cross-browser Testing, Game Testing, Data Analysis, Data Analytics, Complex Problem Solving, Testing Strategy, Detail-oriented, User Interface (UI), User Experience (UX), QA Automation, Quality Auditing, Test Engineering, Requirement Traceability Matrices, Mobile Applications, Wearables, Cursor AI, Artificial Intelligence (AI), Observability, ETL Testing, Operating Systems, Data Management, Mainframe, Environment, User Stories, Resource Allocation, Data Handling, Debugging, Requirements, Test Management, Game Design Documentation, System Requirements, ClickUp, Rapid Delivery, Resource Management, Low Code, Scrum Master, Business Requirements, GAP Analysis, Risk Analysis, Defect Logging, CI/CD Pipelines, AUTOSAR, Firmware over the Air (FOTA), ISO 26262, Scripting, Programming, Automation Tools, Gaming, Content Management Systems (CMS)
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