Headline

SDE@Amazon | Top System Design Voice | Backend Developer | Problem Solver | Health and Tech

About

Hi there! 👋 I’m Rhythm. 👨‍💻 I'm a Software Engineer with 3 years of experience working at Amazon. My expertise lies in Backend Development, Java/J2EE, System Design, OOPS, and Performance Optimization. ✔ Throughout my career, I have worked with multiple programming languages, libraries, frameworks, and technologies such as Java, Python, Spring Boot, ReactJS, SQL, Kafka, and Redis. My experience spans building scalable systems, optimizing performance, and implementing robust solutions using design patterns, microservices architecture, and cloud services like AWS. ✔ I have a strong foundation in Data Structures and Algorithms (DSA), specializing in both Low-Level Design (LLD) and High-Level Design (HLD). My experience includes designing FinTech risk fraud detection systems, developing high-performance solutions for large-scale applications, and optimizing performance and integration during code-level migrations to Amazon EKS. ✔ I’ve been continuously improving my skills and exploring new technologies. I’m passionate about problem-solving and enjoy working on complex challenges that require innovative solutions. ✔ On a personal level, I love reading books 📚, playing badminton, and hitting the gym. I’m also active on LinkedIn, where I post about technology and software engineering. 📬 𝐋𝐞𝐭'𝐬 𝐂𝐨𝐧𝐧𝐞𝐜𝐭: I’m dedicated to building scalable, high-performance systems that address complex challenges. With a proven track record in backend development, system design, and cloud technologies, I’m happy to connect. Feel free to 𝐃𝐌 𝐦𝐞 𝐨𝐫 email 𝐚𝐭 rhythmrv3@gmail.com to discuss how I can contribute to your team.

Location

Gurugram

AI stack

claude

hugging face

kiro

lovable

githubcopilot

Stable Diffusion

Work experience

Software Development Engineer 1 at Amazon, Jun 2025 - Present · 1 yr 5 mos, India

Software Engineer at FPL Technologies, Jan 2025 - Jun 2025 · 6 mos

SDE Consultant at FPL Technologies, Nov 2023 - Dec 2024 · 1 yr 2 mos, ❖ Designed and developed a 𝐟𝐫𝐚𝐮𝐝 𝐝𝐞𝐭𝐞𝐜𝐭𝐢𝐨𝐧 𝐬𝐞𝐫𝐯𝐢𝐜𝐞 for onboarding and underwriting, leveraging customer data (𝐏𝐀𝐍, 𝐝𝐞𝐯𝐢𝐜𝐞, 𝐞𝐦𝐚𝐢𝐥, 𝐦𝐨𝐛𝐢𝐥𝐞, 𝐆𝐏𝐒) to assess risks. This solution is expected to save over ₹100𝐌 in potential credit exposure yearly by using Micronaut, Java, Hibernate, PostgreSQL, Redis, and AWS. ❖ Optimized the 𝐜𝐮𝐬𝐭𝐨𝐦𝐞𝐫 𝐜𝐨𝐦𝐦𝐮𝐧𝐢𝐜𝐚𝐭𝐢𝐨𝐧 𝐬𝐲𝐬𝐭𝐞𝐦, decreasing notification time for 2 million customers from 5 hours to 15 minutes and cutting resource costs by 60% using Redis, AWS, Horizontal Scaling, Distributed Systems, and efficient JSON processing. ❖ Introduced a 𝐤𝐞𝐲𝐰𝐨𝐫𝐝 𝐛𝐥𝐚𝐜𝐤𝐥𝐢𝐬𝐭𝐢𝐧𝐠 𝐟𝐞𝐚𝐭𝐮𝐫𝐞 that prevents sensitive or incorrect information from reaching customers in real-time communications. This feature reduced errors significantly and improved communication reliability across multiple channels 𝐢𝐦𝐩𝐚𝐜𝐭𝐢𝐧𝐠 10M 𝐎𝐧𝐞𝐂𝐚𝐫𝐝 𝐚𝐧𝐝 𝐎𝐧𝐞𝐒𝐜𝐨𝐫𝐞 𝐜𝐮𝐬𝐭𝐨𝐦𝐞𝐫𝐬. ❖ Implemented a 𝐭𝐫𝐚𝐧𝐬𝐚𝐜𝐭𝐢𝐨𝐧 𝐝𝐞𝐜𝐥𝐢𝐧𝐞 𝐟𝐞𝐚𝐭𝐮𝐫𝐞 to automatically block transactions when velocity thresholds are breached, providing real-time notifications to customers. Optimized transaction processing time by 40% using efficient XML parsing and binary search. Skills: Java, Micronaut, GoRules, System Design, Hibernate, PostgreSQL, AWS, Redis, JUnit, Mockito, Data Structures and Algorithms (DSA), Microservices, Design Patterns, REST APIs, SQL, Python(Basic), Agile, Computer Networking.

SDE at MountBlue Technologies, Aug 2023 - Oct 2023 · 3 mos, Remote, ❖ Designed and Developed a full-featured blog application using Spring Boot, Spring Data JPA, and Spring Security, implementing CRUD operations, pagination, search, filtering, sorting, and role-based authentication and authorization. ❖ Engineered a scalable content-sharing platform with features like posts, comments, nested replies, and user authentication using JWT. Implemented media file compression, optimizing database storage by 95%, developed group creation and management functionalities, and created a ReactJS front-end with efficient searching and filtering capabilities. Skills: Spring Boot, Database, Java Development, JSP and Servlet, Data Structures and Algorithms, Thymeleaf, Hibernate

Flutter Intern and Trainee at LinuxWorld Informatics Pvt Ltd, Jul 2020 - Oct 2020 · 4 mos, Rajasthan, India

Redhat Ansible Intern and Trainee at LinuxWorld Informatics Pvt Ltd, Jul 2020 - Sep 2020 · 3 mos, Rajasthan, India

Education

B. Tech., Electronics and Communication Engineering, Arya college of engineering and it

Public links

github: https://github.com/rhythm-design

leetcode: https://leetcode.com/rhythm_varshney