QA Engineer - Fintech & API Testing Expert

RAJ KUMAR GUPTA

Noida, IN

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Education

Maharshi Dayanand University, Rohtak, Haryana 2024 – 2026 M.Tech (Cyber Forensic & Information Security) Percentage: 70% Maharshi Dayanand University, Rohtak, Haryana 2019 – 2023 B.Tech (CSE) Percentage: 70%

Coursework / Skills

Languages: HTML, CSS, JavaScript

Frameworks: PlayWright, React.js, Node.js

Databases: MS SQL, Firebase

Tools: Git, GitHub, Postman, JIRA

Core CS: Operating Systems, DBMS, Software Engineering, SDLC Experience

Paymonk (Actas Technologies Pvt. Ltd.) Noida

QA Engineer (Full-time) May 2025 – Present

• Sole QA owner for a fintech/payment platform, independently driving end-to-end testing across web and Android applications.

• Ensured reliability of payment flows and transaction-related features through rigorous manual, functional, and regression testing.

• Designed and executed test cases; logged, tracked, and verified defects using JIRA, directly supporting stable production releases.

• Performed deep API testing using Postman, validating data integrity, error handling, and response correctness.

• Identified redundant API calls and irrelevant response data, contributing to an estimated 20–30% reduction in unnecessary API requests and improved performance.

• Conducted Android mobile app testing, uncovering UI, functional, and API issues to meet business demands and release timelines.

• Verified backend and database consistency to ensure accurate transaction processing and re- porting.

Projects

Steel Furniture E-commerce Website Live-Link

Built a responsive web app using React and Tailwind CSS, with dynamic routing via React Router, state management using Redux Toolkit, and secure authentication via Firebase. Key Features:

Responsive design for seamless use across devices. Secure user authentication using Firebase. Dy- namic routing for intuitive navigation. Efficient state management with Redux Toolkit. Modern and sleek UI styled with Tailwind CSS. Cart management and personalized user features.. Technologies: React, Redux Toolkit, Tailwind CSS, Firebase, React Router. CRUD Application Live-Link

Developed a robust CRUD app using ASP.NET Core with Repository Pattern and SQL Server, implementing RESTful APIs, user authentication, input validation, and error handling. Key Features:

Implemented the Repository Pattern to abstract data access logic, promoting clean architecture and testability. Utilized Entity Framework Core for seamless database interactions and migrations. Technologies: ASP.NET Core,Entity Framework Core,SQL Server,C#,HTML/CSS/JavaScript

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