Building secure, scalable backend systems that power real-world applications

Software Engineer

Eleven Tech Studio Pvt. Ltd.

Jul 2023 – Present · Gurugram

Leading backend architecture for fintech and enterprise platforms with a focus on performance and security.

• Microservices — designed and built 15+ scalable Spring Boot services and REST APIs.
• Performance — cut backend response times 30–40% via Redis caching and optimized service calls.
• Authentication — implemented JWT, MFA, OTP and RBAC for multi-tenant environments.
• Integrations — delivered 10+ third-party integrations — payments, credit bureau, eKYC and webhooks.
• Reliability — added token management, auto-refresh, retry and timeout handling for fault tolerance.
• CI/CD — streamlined Jenkins + AWS deployments, reducing release effort by 50%.
• Mentoring — ran code reviews and mentored junior developers.

Software Developer

Eleserv Softech Pvt. Ltd.

Jan 2022 – May 2023 · Delhi

Built backend modules and enterprise workflows in an Agile delivery environment.

• Backend modules — developed scalable enterprise workflows with Spring Boot, PostgreSQL and Kafka.
• IRCTC Leave System — delivered a leave management system, cutting approval turnaround by 50%.
• Automation — automated healthcare reporting with Python, reducing turnaround by 70%.
• Delivery — supported deployments, enhancements and production issue resolution.

SSO Authentication Platform

Multi-Tenant Authentication & Authorization

A production-grade multi-tenant SSO platform giving multiple enterprise clients unified, secure login across Employee ID, Email and OTP.

• JWT authentication — access, refresh and MFA tokens with AES-encrypted merchant claims.
• Multi-factor auth — Email/SMS OTP with Redis caching, TTL cooldown and resend-abuse protection.
• RBAC framework — annotation-based permission checks across users, roles, assets, apps and merchants.
• Dynamic asset module — recursive tree, role-asset mapping and permission-based nested-tree APIs.
• Token caching — Redis-cached third-party tokens with auto-refresh on 401 responses.

CMS — Collection Management System

Multi-Channel Campaigns & Payments

A collections backend that dispatches multi-channel campaigns to thousands of customers and integrates payments reliably under load.

• Multi-channel dispatch — SMS, Email, WhatsApp and Push via a WebClient client with per-org API keys.
• Template engine — reflection-based resolution mapping {{placeholders}} to loan/client fields at dispatch.
• Campaign tracking — batch IDs and a CREATED → IN_PROGRESS → COMPLETED/FAILED lifecycle.
• Payment integration — PayU with a Resilience4j circuit breaker and graceful fallback on failure.
• Async & rate limiting — SQS producers for bulk/single dispatch and Redis rate limiting on public endpoints.

LMS — Loan Management System

End-to-End Lending Workflows

Scalable backend APIs automating the full lending lifecycle — from customer onboarding to disbursement and repayment.

• Loan lifecycle APIs — application, verification, approval, disbursement, EMI, closure and foreclosure.
• Credit Bureau checks — credit score, repayment history and risk assessment during processing.
• KYC & payments — Aadhaar/KYC verification and payment gateway with webhook/callback handling.
• Role-based access — Sales, Operations, Credit, Finance, Collections and Admin roles.
• Reporting APIs — pipeline, disbursal, overdue accounts and portfolio analytics.

Leave Management System — IRCTC

Employee Leave Workflows

A custom leave management system for IRCTC to streamline leave application, approval and tracking across departments.

• Leave workflows — submission, approval/rejection, cancellation and balance tracking.
• Role-based modules — Employees, Reporting Managers, HR Admins and Super Admins.
• Email notifications — submission, approval, rejection and status updates.
• HR reporting — monthly summaries, attendance insights and downloadable reports.