Software Engineer - Real-Time Backend & AI

SUNNY KUMAR RAY

***********@*****.*** +91-995******* My Portfolio My Linkedin Account

https://github.com/sunny8851

PROFESSIONAL EXPERIENCE

SOFTWARE ENGINEER (Dynasas)

International Experience & Advanced Projects(AITS) 01/2025 – Present

Dubai & Gurugram

•Led a team of 6 developers, managing task distribution, technical guidance, code reviews, and coordination to ensure timely project delivery and smooth collaboration across teams

•Worked on-site in Dubai for 4 months, collaborating directly with clients and stakeholders for project delivery and requirement alignment

•Contributed to the AITS (Airport Intelligent Trolley System) project, focusing on advanced indoor navigation and smart tracking solutions

•Designed and implemented an indoor mapping system(AITS) for airport environments

(similar to Google Maps) using:-WiFi RSSI-based positioning,Accelerometer,Gyroscope sensor data for motion tracking Kalman Filter for noise reduction and improved accuracy, K-Nearest Neighbors (KNN) algorithm for location estimation

•Architected and developed scalable Node.js, Python backend services and REST APIs for the Airport Intelligent Trolley System (AITS), powering real-time trolley tracking, indoor navigation, device telemetry ingestion, live monitoring, battery health management, predictive low-battery alerts, notification workflows, operational analytics, and administrative dashboards. Designed event-driven communication systems for processing high-frequency location and sensor data, implemented real-time tracking and alerting mechanisms, optimized database performance, and ensured high availability, scalability, and reliability across thousands of connected devices within airport environments. Key Skills:- React.js, React Native, Node.js, pyhton, sql,aws, docker, javascript. Real-Time Dating Application (Ximoo)

•Developed a Tinder-like cross-platform dating application using React Native and Node.js, python, serving both iOS and Android users(For dubai).

•Designed and implemented intelligent matchmaking algorithms based on user preferences, age, gender, Height, location, and compatibility criteria.

•Built real-time chat, notifications, and match interactions using Socket.io, ensuring low- latency communication and high user engagement.

•Integrated Elastic search to provide fast profile discovery, location-based search, and advanced user filtering capabilities.

•Integrated Agora SDK to enable high-quality one-to-one video calling within the platform.

•Developed secure backend APIs and business logic for user profiles, matching, swiping, messaging, and relationship management.

•Implemented real-time event processing and socket-based architecture to deliver a seamless and scalable user experience.

Key Skills:- React Native, Node.js,pyhton, socket server, mongodb,aws, javascript,agora sdk,elastic search.

FULL-STACK DEVELOPER (ANT CLOUD)

•Virtual PC Project-

03/2024 – 01/2025

Delhi

•Developed and maintained a cloud-based Virtual PC platform for individuals and enterprises, enabling secure remote access to virtual desktops and supporting 200+ concurrent users with high availability and performance.

•Designed scalable backend services, user management modules, and system monitoring features to ensure seamless and reliable operations.

•Affiliate Dashboard Project-Created a comprehensive dashboard for affiliate users. This tool tracks commissions, revenue generated from affiliate links, payout records, automated payments, and validates offers/coupon codes.

•Organization Management Software-Designed and developed an organization management platform for user administration, role-based access control, workflow automation, and operational management.

•Implemented scalable backend services, database architecture, and administrative dashboards to streamline business processes and improve productivity.

•AWS- Worked on AWS Ec2 to deploy and manage cloud infrastructure, ensuring scalability and reliability.

Key Skills:- React.js, node.js, mongodb,aws, javascript, physical servers. FULL-STACK DEVELOPER (Easync Books)

•Developed a full-scale Accounting and GST Billing platform (Easync books) from scratch, handling 1,0000+ daily transactions, invoicing, taxation, financial calculations, and record management.

11/2022 – 03/2024

Noida,UP

•Designed and implemented secure Role-Based Access Control (RBAC) with Admin, Sub- Admin, and User permissions to ensure controlled access and data security.

•Built analytics and reporting modules to provide actionable insights into sales, purchases, expenses, cash flow, and business performance.

•Developed scalable Node.js backend services, REST APIs, and database architectures to support accounting operations, financial reporting, and data management.

•Implemented automated email notification and logging systems for invoices, payment reminders, transactional updates, and audit tracking.

•Optimized database queries and backend workflows to improve system performance, reliability, and data accuracy.

•Collaborated across the full software development lifecycle, from requirements gathering and system design to deployment and production support. Key Skills-React.js,Javascript,Node,Mongodb,Express,SQL FRONTEND DEVELOPER INTERN(Parentune.com)

•Worked on Parentune.com, a parenting platform that enables users to connect with doctors through online consultations, voice/video calls, and real-time chat, providing accessible healthcare guidance and parenting support.

03/2022 – 08/2022

Gurgaon,Haryana

•Migrated web project from JavaScript to TypeScript that reduced the sentry bugs by 4 times

•Developed a Design system using Reusable components that helped in scaling a project.

•Worked alongside with senior developers to complete tasks and flow like:- Creating new UI, fixing bugs and adding new features to website.

•Worked with Backend team for API integration.

Key Skills-React.js,Javascript,Typescript,Redux,API,HTML,CSS,Tailwind CSS EDUCATION

B.TECH

G.L BAJAJ INSTITUTE OF TECHNOLOGY AND MANAGEMENT (CGPA-8.1) 2019 – 2023

Gr. Noida, UP

12th (CBSE)

GOVT BOYS SR. SEC SCHOOL NO-1 (Percentage-73%)

2017 – 2018

New Delhi

SKILLS

Node.js

Next.js

MongoDB

System design

React.js

Fast Api

AWS

Team lead

Python

SQL

Express.js

React-native

Javascript & Typescript

C++

ACHIEVEMENTS

Leetcode weekly contest 332 ( Global Rank 1519 out of 25000 participants and All India Rank 229 )

Codechef Sep Lunchtime ( Global Rank-669 ) LEETCODE+GFG --- 500+ problems solved

Leetcode Weekly contest 322 (AIR-400) CODECHEF --- 3 Star

Codechef Jan Challenge ( Global Rank-439 ) Hacker rank --- 5 star

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