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B.Tech

CSVTU 2018 - 2022

Intermediate of Science

JDS (+2) School Khilwat - 2018

Matriculation

Cambridge Public School Patna - 2015

Hello! My name is Pappu Kumar, a passionate Developer with 3 years of experience—2 years of full-time work and 1 year of intensive training and internship. I specialize in building scalable mobile and web applications with a focus on performance, security, and user-centric design.
Currently, I am serving as the Chief Technology Officer (CTO) at Munafa Technology, where I lead the development and deployment of fintech solutions. I manage a talented team of engineers and designers to build and scale SME loan functionalities, ensuring seamless user experience and efficient operations. My work includes overseeing end-to-end development, strategy, and technical leadership for innovative product solutions.
Before joining Munafa Technology, I worked at SenseGrass as a Mobile App Engineer. I initially joined as an SDE-Mobile and was promoted due to my dedication and consistent performance. During my time at SenseGrass, I contributed to multiple fintech projects, including the MoneyPlant app, implementing key features such as payments, loan management, credit reports, and KYC verification. I worked extensively with technologies like React Native, Spring Boot, and PostgreSQL to build full-stack, microservices-based solutions.
Prior to SenseGrass, I worked at MatrIoT Solutions in Bangalore as a Software Engineer, where I focused on real-time applications. My contributions included upgrading legacy systems, transitioning databases from MongoDB to MySQL, and building real-time communication systems with WebSockets. I also developed scalable backend services using Docker, Node.js, and Python for IoT-based projects.
Before that, I worked as a Mobile Application Operation Executive at InfinityBox, where I assisted in building cross-platform mobile applications and performed key operational tasks to improve the app's scalability and user experience.
My journey began at Masai School, where I spent 1 year as a Full Stack Developer Trainee. During this time, I built several real-time applications, including a Netflix-like streaming app using React, Redux Toolkit, and Axios, and a social media application with a microservices-based architecture using Go Fiber, Node.js, MySQL, and React.js. This experience laid a strong foundation in full-stack development and helped me transition into a professional developer.

My ExperiencesFrontend(2+ Years)

VP of Product

1 Jan 2025 - Present

Munafa Technology (Sister company of SenseGrass INC), California (Remote)

Project: Munafa Version 2

Refactored the codebase to enhance app performance, ensure high scalability, and deliver smooth navigation.
Designed and developed the entire SME loan mobile screen flow, including personal details, business details, loan offers, KYC verification, loan sanction, EMI calendar, and loan details.
Introduced Redux Toolkit for efficient state management, reducing boilerplate code and improving maintainability.
Added Axios in a global configuration for managing API requests, improving request handling and consistency.
Implemented authentication in APIs for enhanced security.
Integrated Decentro API for Aadhaar and PAN card verification, ensuring accurate identity verification.
Incorporated Twilio for mobile OTP verification, improving user authentication and security.
Integrated real-time voice agent functionality using Eleven Labs with WebSocket support, providing interactive voice responses.
Built a scalable backend architecture for SME business loans, reducing loan approval time by 30%.
Improved the mobile interface with React Native, leading to a 40% increase in user engagement.
Integrated real-time notifications and enhanced API security for handling sensitive user information.
Led the development team and design team in creating SME loan functionalities, overseeing the entire screen flow and user experience.
Developed flowcharts for end-to-end development and design processes, ensuring clarity and efficiency in project execution.
Engineered React Native mobile applications for seamless user interaction and functionality.
Implemented an admin panel for managing loans, enhancing operational efficiency and user management.
Worked on the backend using Node.js and MongoDB to support the SME loan functionalities and ensure robust data handling.
Developed APIs for both mobile and web applications, facilitating seamless data integration and interaction across platforms.
Enhanced the loan and mutual fund modules with additional functionalities and workflows for better user experience.
Developed a comprehensive admin dashboard for managing loan applications, user data, and system operations, improving operational efficiency and user management.
Implemented real-time notifications and alerts for timely updates on loan statuses and system operations, ensuring timely responses and improved user engagement.
Developed B2B and B2C insurance flow
Develped Mobile and web UI required for B2B and B2C insurance flow
Developed APIs for B2B and B2C insurance flow
Developed Admin dashboard for managing B2B and B2C insurance flow
Developed a comprehensive admin dashboard for managing Insurance applications, user data, and system operations, improving operational efficiency and user management.
Implemented real-time notifications and alerts for timely updates on Insurance statuses and system operations, ensuring timely responses and improved user engagement.

Mobile App Engineer

July 2024 - Present

SenseGrass, California (Remote)

Project: Moneyplant Version 2

Worked on a full-stack, microservices-based mobile and web application using React, React Native, Spring Boot, and PostgreSQL.
Implemented key financial features such as PAN card verification and income verification using bank statements via Digitap API.
Handled credit report generation, KYC verification, video KYC verification, and penny drop verification through Digitap.
Enabled loan sanction process and managed EMI payments through Cashfree, with transaction handling via EscrowPay.
Developed APIs for both mobile and web applications, facilitating seamless data integration and interaction across platforms.
Enhanced the loan and mutual fund modules with additional functionalities and workflows for better user experience.
Designed and implemented a complete user onboarding flow, including personal info collection, Aadhaar and PAN verification, address verification, and selfie-based identity verification.
Added gamification elements to the onboarding process to enhance user engagement and completion rate.
Developed the home screen with dynamic dashboards displaying gold investment, loans on mutual funds, and stock investment options.
Integrated gold investment features, allowing users to invest and track returns in real-time.
Built the loan management module for mutual funds and stock-based loans, simplifying the application and disbursement process.
Optimized React Native components for improved performance and responsiveness, ensuring a seamless user experience.
Incorporated push notifications and alerts to keep users informed about investment opportunities and loan status.
Implemented advanced API security protocols and real-time updates for accurate data representation.
Collaborated with cross-functional teams to ensure a cohesive and scalable architecture across the app.
Created APIs for all core functionalities using Spring Boot, ensuring high performance and scalability.
Optimized API responses for faster load times and improved throughput.
Implemented secure authentication and authorization for APIs, ensuring data integrity.
Integrated RESTful APIs for seamless communication between microservices and the frontend.
Enhanced API logging and monitoring to improve error detection and system reliability.

Project: Moneyplant Version 1

Worked on a full-stack, microservices-based mobile and web application using React, React Native, Spring Boot, and PostgreSQL.
Implemented key financial features such as PAN card verification and income verification using bank statements via Digitap API.
Handled credit report generation, KYC verification, video KYC verification, and penny drop verification through Digitap.
Enabled loan sanction process and managed EMI payments through Cashfree, with transaction handling via EscrowPay.
Developed APIs for both mobile and web applications, facilitating seamless data integration and interaction across platforms.
Enhanced the loan and mutual fund modules with additional functionalities and workflows for better user experience.
Designed and implemented a complete user onboarding flow, including personal info collection, Aadhaar and PAN verification, address verification, and selfie-based identity verification.
Added gamification elements to the onboarding process to enhance user engagement and completion rate.
Developed the home screen with dynamic dashboards displaying gold investment, loans on mutual funds, and stock investment options.
Integrated gold investment features, allowing users to invest and track returns in real-time.
Built the loan management module for mutual funds and stock-based loans, simplifying the application and disbursement process.
Optimized React Native components for improved performance and responsiveness, ensuring a seamless user experience.
Incorporated push notifications and alerts to keep users informed about investment opportunities and loan status.
Implemented advanced API security protocols and real-time updates for accurate data representation.
Collaborated with cross-functional teams to ensure a cohesive and scalable architecture across the app.
Created APIs for all core functionalities using Spring Boot, ensuring high performance and scalability.
Optimized API responses for faster load times and improved throughput.
Implemented secure authentication and authorization for APIs, ensuring data integrity.
Integrated RESTful APIs for seamless communication between microservices and the frontend.
Enhanced API logging and monitoring to improve error detection and system reliability.

SDE-Mobile

April 2024 - JULY

SenseGrass, California (Remote)

Project: Munafa version 1

Transitioned Munafa app from Expo to React Native CLI, improving app load time by 25%.
Integrated Cashfree payment gateway for seamless UPI payments, improving payment success rate by 20%.
Developed comprehensive insurance features, including weather and equipment insurance, boosting farmer engagement by 10%.
Connected the insurance workflow with partner and admin dashboards by creating all required APIs for seamless integration.
Developed APIs for document upload to AWS S3 bucket, enabling secure and scalable file storage solutions for insurance claims and verification.

Software Engineer

October 2023 - Feb 2024

MatrIoT Solutions, Bangalore

Project: M3-SUITE Backend

Revamped the M3-SUITE backend by upgrading Node.js from version 5 to the latest, optimizing performance and replacing MongoDB with MySQL for enhanced data management.
Led the development of the Asset Tracker backend, collaborating effectively with cross-functional teams on the cBin backend.
Redesigned the schema model and implemented event-driven architecture, enhancing real-time data processing through updated web sockets.
Developed a comprehensive Dockerfile for the Node.js application and orchestrated Docker Compose for streamlined backend deployment.
Engineered an IoT product, creating a robust logger file in Python and implementing a JSON property with validation functions for data integrity.
Established a WebSocket communication protocol enabling seamless interaction between two laptop clients and the server, enhancing user experience.

Software Developer Trainee

March 2023 - Sept 2023

MatrIoT Solutions, Bangalore

Project: M3-SUITE Frontend

Engineered a BIO DATA web application utilizing Reactfor the frontend and Node.js with Express and MongoDB for the backend.
Executed CRUD operations, integrated third-party APIs, and implemented WebSocket, MQTT, and robust data validation functionalities.
Migrated database from MongoDB to MySQL to enhance performance and scalability.
Transformed the web application into a cross-platform Android app using Ionic framework.
Revamped M3-SUITE web app frontend from React8 to 16 independently.
Containerized applications using Docker for improved deployment and scalability.

Mobile Application Operation Executive

Sep 2022 - Dec 2022

InfinityBox, Bangalore

Project: Operations Management and Application Support

Managed operations in the assigned area, ensuring smooth functioning of mobile applications and services.
Collaborated with cross-functional teams to monitor application performance and resolve operational issues.
Assisted in scaling the application by identifying bottlenecks and suggesting improvements in operational workflows.

Full Stack Developer Trainee

Sept 2021 - Aug 2022

Masai School, Bangalore (Remote)

Project: Netflix-like Streaming Application

Built a Netflix-like streaming application using React, Redux, Redux Toolkit, and Axios for state management and API handling.
Implemented user authentication, personalized content recommendations, and dynamic content fetching for smooth streaming.
Developed a scalable backend using Node.js and Express, integrating MongoDB for storing content metadata and user preferences.
Enhanced performance by implementing caching strategies to minimize latency during playback.
Optimized the frontend for a seamless user experience with responsive design and intuitive navigation.

Project: Real-Time Chat Application

Developed a real-time chat application using Node.js, WebSocket, ZegoCloud, and React.js with Redux for state management.
Implemented real-time messaging and group chat functionality with read receipts and typing indicators.
Integrated ZegoCloud for real-time audio and video calling, improving user interaction.
Designed a scalable backend with Node.js and WebSocket for handling high-frequency data transmission.
Ensured a secure communication channel with token-based authentication and end-to-end encryption.

Project: Social Media Application

Designed and developed a social media application using Node.js, Express, Go Fiber, MySQL, React.js, and Next.js.
Architected the backend with a microservices-based architecture using Go Fiber for scalability and modularity.
Implemented core features such as user profile management, post creation, likes, comments, and friend requests.
Integrated MySQL for relational data storage and MongoDB for non-relational data to ensure optimal performance.
Implemented real-time notifications using WebSocket for instant updates on activities like comments and messages.
Used Docker for containerizing microservices, streamlining the development and deployment process.
Collaborated with cross-functional teams to optimize API performance and ensure a seamless user experience.

Projects

Web2 Freelance Project

Service Apartment Booking

A responsive service apartment booking website with NextJS, TailwindCSS,Cashfree Payment Gateway,NodeJS,Express,MongoDB,Seo,Google Analytiqs Integration

NextJS, TailwindCSS,Framer Motion,Cashfree Payment Gateway,NodeJS,Express,MongoDB,Seo,Google Analytiqs

Web3 and Mobile apps Project

Blocenity - Blockchain-Based Product Authentication System

Blocenity is a blockchain-powered product authentication system that allows users to verify the authenticity of products using a unique QR code. It addresses the global issue of counterfeit products by providing a transparent and immutable record of product history on the blockchain.

Ethereum, Solana,Framer Motion, Solidity, Rust, Next.js, React.js, React Native, Node.js, Express, MetaMask, WalletConnect, QR Libraries

Web2 Freelance Project