---
title: "Arjun Kumar - Technical Lead 1 - Development in Greater Delhi Area | Tal"
description: "Meet Arjun Kumar, Tech Lead @ Sirion.ai | Ex- Cars24, Bank of America | Java | Spring boot | Microservices based in Greater Delhi Area. AI stack includes antigravity and opencode."
image: "https://tal.club/meet/arjun-kumar-1/share-image"
---

# Arjun Kumar on Tal

## Headline

Tech Lead @ Sirion\.ai \| Ex\- Cars24, Bank of America \| Java \| Spring boot \| Microservices

## About

Tech Lead and backend engineer with 7\.5\+ years of experience building scalable Java, Spring Boot, microservices, and distributed systems across car buying, selling, servicing, subscriptions, payments, finance automation, and authentication platforms\. At CARS24, I lead backend engineering across 15\+ microservices and have built platforms including Slot Planner, Key Management, DA Panel, Car Servicing, and Media Service\. I have owned end\-to\-end B2B procurement workflows using Temporal, led finance automation integrations with SAP HANA, migrated systems with zero downtime, and improved performance through Redis caching, refactoring, and search optimization\. My core strengths are Java, Spring Boot, microservices, system design, Redis, Elasticsearch, Kubernetes, Docker, GCP, AWS, MySQL, MongoDB, ArangoDB, Pub/Sub, RabbitMQ, and REST APIs\. I enjoy solving backend scalability problems, improving developer velocity, and leading teams through high\-impact product and platform delivery\.

## Location

Greater Delhi Area

## AI stack

antigravity

opencode

## Work experience

Technical Lead 1 \- Development at Sirion, Jul 2026 \- Present · 2 mos, Gurugram, Haryana, India

Tech Lead at CARS24, Apr 2025 \- Jul 2026 · 1 yr 4 mos, Gurugram, Haryana, India, Leading a team of 3 backend engineers across design, development, and delivery for 15\+ microservices powering CARS24's car buying, selling, servicing, subscriptions, and procurement journeys\. \- Built and scaled microservices including Slot Planner, Key Management, DA Panel, Car Servicing, and Media Service\. \- Owned the end\-to\-end B2B car procurement workflow using Temporal for reliable workflow orchestration and state management\. \- Led finance automation for buy/sell flows with SAP HANA integrations\. \- Reduced API latency by 20% through Redis optimization, caching strategies, and code refactoring\. \- Improved TDD\-to\-token conversion by 8% by revamping document upload and test drive scheduling flows\. \- Led Okta to in\-house user management migration for internal, external, and consumer authentication\. \- Led ArangoDB to MongoDB migration using a dual\-write strategy with zero downtime and no data inconsistencies\. \- Enhanced search and customer experience using Elasticsearch geo\-based sorting\. Tech stack: Java, Spring Boot, MySQL, MongoDB, ArangoDB, Redis, Elasticsearch, Temporal, GCP Pub/Sub, Kubernetes, Docker, AWS S3, JUnit, Mockito\.

Senior Software Engineer at CARS24, Apr 2022 \- Mar 2025 · 3 yrs, Gurugram, Haryana, India

Software Engineer at CARS24, Sep 2019 \- Mar 2022 · 2 yrs 7 mos, Gurugram, Haryana, India

Sr\. Tech Associate at Bank of America, Jun 2018 \- Sep 2019 · 1 yr 4 mos, Gurugram, Haryana, India

## Education

Bachelor of Technology \(B\.Tech\.\), Software Engineering, Delhi Technological University \(Formerly DCE\)

High School, Rajkiya Pratibha Vikas Vidyalaya, Rajniwas Marg, Delhi

[View the original profile](https://tal.club/meet/arjun-kumar-1)

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