Rajat Jain

Software Engineer

Gurugram, Haryana, India5 yrs experience

Key Highlights

  • Expert in architecting high-performance distributed systems.
  • Proven track record in building secure payment infrastructures.
  • Skilled in developing scalable, resilient backend solutions.
Stackforce AI infers this person is a Backend-heavy Fullstack Engineer in Fintech and Healthcare sectors.

Contact

jain.rajat1012@gmail.com8800575798LinkedIn

Skills

Core Skills

Architecting Distributed SystemsBuilding Secure Payment Infrastructure

Other Skills

AWS LambdaAlgorithmsAmazon DynamodbAmazon Relational Database Service (RDS)Amazon S3Amazon SQSAmazon Web Services (AWS)Apache KafkaArchitectingAutomated payoutsBackend systemsC++Cost optimizationData StructuresData handling

About

👨‍💻 Software Engineer specializing in high-performance distributed systems and scalable cloud architecture that delivers business impact. I solve complex engineering challenges by designing systems that maintain sub-100ms performance even at 100K+ RPM scale. My focus lies in creating resilient, efficient infrastructure that powers critical business operations. 💡 Core strengths: - Architecting distributed systems that scale seamlessly - Building secure, high-throughput payment infrastructure - Designing event-driven microservices with fault tolerance - Implementing performance-optimized data pipelines My passion is engineering elegant solutions to difficult technical problems. I thrive in environments where scalability, reliability, and security are non-negotiable requirements. Open to connecting with fellow engineers, architects, and technology leaders who share an interest in high-performance systems design.

Experience

5 yrs
Total Experience
2 yrs
Average Tenure
10 mos
Current Experience

Neurodiscovery ai

Senior Backend Engineer

Jul 2025 – Present · 10 mos · Gurugram, Haryana, India · Remote

Jivi ai

2 roles

Software Engineer - III

Apr 2025 – Jun 2025 · 2 mos · Gurugram, Haryana, India · On-site

Founding Engineer - Backend

Jan 2024 – Apr 2025 · 1 yr 3 mos · Gurugram, Haryana, India · On-site

  • As Founding Engineer - Backend at Jivi, I architected and scaled key backend systems from scratch, driving performance and reliability across AI-driven products.
  • Key achievements:
  • Web Crawler: Built a high-performance crawler for medical data, handling 12.5M records and 9M images, with sub-50ms search latency.
  • Notification Service: Developed a unified system for SMS, Push, Email, and WhatsApp, cutting authentication costs by 50% and ensuring sub-200ms delivery.
  • IAM System: Engineered a high-performance IAM system handling 40K RPM with <50ms authentication latency using Redis and JWT tokens.
  • Mobile Backend: Designed a scalable backend for mobile apps, handling 22.3K RPM and maintaining 99.9% uptime with optimised latency under 120ms.
  • Payment Orchestration: Built a payment system integrating multiple providers, boosting payment success rates to 95% with automated reconciliation.
ArchitectingScalingHigh-performance systemsReliabilityBackend systemsArchitecting distributed systems+1

Bharatpe

3 roles

Software Engineer - II

Nov 2023 – Dec 2023 · 1 mo

  • Architected a modular, microservices-based Central SMS Service, optimising user messaging operations and achieving 110,000 requests per minute (RPM). Integrated NoSQL databases alongside Kafka streaming for real-time data processing, enabling BharatPe to efficiently store and analyse and perform aggregations on large-scale data. This infrastructure empowered the development of advanced intelligence and analytics on user behaviour, driving improved user engagement and traction.
  • Led the development of a data-driven sales application for cross-selling, facilitating monetisation and automated payouts for BharatPe’s sales agents. Built a custom rule engine leveraging MySQL, Redis, Kafka, and Spring Boot, enabling seamless handling of complex payout calculations. Implemented multi-threaded processing for asynchronous tasks, ensuring high performance and scalability. The solution improved efficiency in cross-sell activities, driving revenue growth and operational automation.
MicroservicesNoSQL databasesKafka streamingData-driven applicationsMySQLRedis+3

Software Engineer - I

Jul 2021 – Nov 2023 · 2 yrs 4 mos

Software Engineer Intern

Nov 2020 – Jun 2021 · 7 mos

  • Primarily worked with React (JavaScript/TypeScript) and Vue.js for frontend development, while utilising Laravel and PHP for building robust server-side applications using Mysql as a datasource.
  • Developed an Automated QR Assignment module within the CRM, reducing manual intervention by 90%, significantly improving efficiency for responsible stakeholders.
  • Optimised and refactored the Bill Payments Module on the BharatPe Merchant App, enhancing performance and user experience.
  • Involved in a complete refactor of the BharatPe Organised Trader’s Dashboard, improving code quality, readability, and upgrading the underlying tech stack for better maintainability and scalability.

Education

Bangalore Institute of Technology

Bachelor of Engineering - BE — Computer Science

Jan 2017 – Jan 2021