---
title: "Vicky Kumar - Senior Software Engineer | Flipkart (via Techwise Digital) in Bengaluru | Tal"
description: "Meet Vicky Kumar, Backend Engineer | Java · Spring Boot · Microservices · REST APIs · MySQL | Distributed Systems | 4.5 YOE | Flipkart · Oracle Cerner | Immediate Joiner based in Bengaluru. AI stack includes claude code, claude, and github copilot. Explore public work links including github and lee..."
image: "https://tal.club/meet/vicky-kumar-1/share-image"
---

# Vicky Kumar on Tal

## Headline

Backend Engineer \| Java · Spring Boot · Microservices · REST APIs · MySQL \| Distributed Systems \| 4\.5 YOE \| Flipkart · Oracle Cerner \| Immediate Joiner

## About

I build backend systems that don't break under pressure\. At Flipkart, I work on high\-scale, event\-driven infrastructure handling 80K\+ events/day — designed a Kafka dead\-letter queue with Redis\-backed idempotency, built a runtime rule engine that cut change turnaround from 2\-week sprints to same\-day, and slashed deployment time from 3 hours to 30 minutes across 18 microservices\. What I do: → Design and ship scalable backend services using Java, Spring Boot, and Microservices → Build event\-driven pipelines \(Kafka, Redis\) with fault tolerance and zero data loss → Optimize CI/CD pipelines \(Jenkins\) for high\-velocity teams → Improve observability and incident response \(Datadog\) in production systems Past impact at Oracle Cerner \(3\+ years\): → Designed FHIR R4\-compliant microservices serving 3 clinical apps — cut malformed\-request errors by 65% → Owned production reliability — reduced incident resolution from 4 hours → under 1 hour → Enforced 80%\+ test coverage via GitHub Actions coverage ratchet \(JUnit 5, Mockito\) → Built automated PR linter across 30\+ engineer codebase — saved 2 hours/week of reviewer time Tech stack: Java · Spring Boot · Apache Kafka · Redis · Microservices · REST APIs · MySQL · Jenkins · CI/CD · Datadog · JPA · JUnit 5 · System Design · Event\-Driven Architecture · Docker · AWS Currently open to SDE 2 / Senior Backend Engineer roles in high\-scale distributed systems or product infrastructure\. Let's connect if you're building something ambitious\.

## Location

Bengaluru

## AI stack

claude code

claude

github copilot

openai

claudecode

ChatGPT

## Work experience

Senior Software Engineer \| Flipkart \(via Techwise Digital\) at TechWise Digital, Mar 2025 \- Dec 2025 · 9 mo, Bengaluru, Karnataka, India, →Reworked Jenkins CI/CD pipelines across 18 microservices — parallelized test stages, added artifact caching, and eliminated redundant staging gates, slashing deployment time from 3 hours → 30 minutes and enabling the team to ship daily instead of weekly\. →Designed and built a dead\-letter queue system for Kafka\-based event pipelines processing 80K\+ events/day — failed events are automatically captured, retried with exponential backoff, and reprocessed without manual intervention; paired with Redis\-backed idempotency keys to eliminate duplicate processing\. →Built a database\-driven rule engine \(Spring Boot \+ MySQL\) where business logic lives in the DB and is evaluated at runtime — adding or modifying rules no longer requires a deployment, cutting change turnaround from 2\-week sprint cycles → same\-day updates\. →Configured Datadog log alerts for critical failure and exception patterns — reduced Mean Time to Detect \(MTTD\) by 50% and cut incident resolution time from 3 hours → under 45 minutes\.

Software Engineer at Cerner Corporation, Apr 2021 \- Nov 2024 · 3 y 7 mo, Bengaluru, Karnataka, India, →Designed and implemented FHIR R4\-compliant microservices \(Java, Spring Boot, JPA\) serving 3 internal clinical applications — owned schema design, full CRUD, request validation with standardized OperationOutcome error responses, and API versioning; cut malformed\-request errors by 65%\. →Owned production reliability of FHIR API services — diagnosed and resolved critical failures, introduced structured logging with correlation IDs for cross\-service observability, and reduced incident resolution time from 4 hours → under 1 hour\. →Refactored Spring Boot services to clean layered architecture \(controller → service → repository\) with DTOs for request/response mapping and the Factory pattern for resource construction — reduced code duplication and improved extensibility without breaking existing consumers\. →Wrote unit tests \(JUnit 5, Mockito\) for critical API paths and enforced a GitHub Actions coverage ratchet — feature branches must exceed main branch coverage, keeping test coverage consistently above 80% across all owned services\. →Built an automated linter integrated into the PR workflow, enforcing formatting standards across a 30\+ engineer codebase — reduced formatting violations by 70% and saved 2 hours/week of senior reviewer time\. →Built a filtered event export feature \(Java, Spring Boot\) generating on\-demand Excel reports — cut manual data extraction time by 40%, supporting 24\+ daily exports across internal teams\. →Mentored junior engineers through code reviews, FHIR API conventions, and architectural walkthroughs — accelerated their path to independent feature delivery and progressively took on end\-to\-end solo ownership of complex features\.

## Education

Master of Computer Applications \- MCA, Computer Science, Maulana Azad National Institute of Technology

Bachelor of Computer Applications \- BCA, Computer Science, Sikkim Manipal University \- Distance Education

## Public links

- github: https://github\.com/devvickykumar
- leetcode: https://leetcode\.com/devvickykumar

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

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