Jatin Kumar.

Bangalore, India · Open to full-stack and backend roles

I have spent 3+ years building production software at Swiggy, ACI Worldwide and Thoughts2Binary: microservices, data-heavy dashboards, deployment pipelines and AI features. I am an SDE-1 at Swiggy and an M.Tech Computer Science student at IIT Madras.

Play through my work LinkedIn GitHub

Earn XP as you explore and watch your level in the corner. In a hurry? Switch on Recruiter mode to open everything at once. There is also a secret word to type.

Mini-game · Cache QuestFrom my Swiggy work

Make leadership's dashboard fast

Metrics roll up from every ASM to CLBH. Tap the 4 CSH nodes to cache them, then run the query. Can you hit the 85% cut I shipped?

Data-fetch latency, relative to a full traversal100%

Without caching, every query reads all 8 ASM nodes. The amber line marks the target.

  • 85%lower data-fetch latency at Swiggy
  • 65%faster releases through automated AWS deployments
  • 15%less downtime on authentication microservices
  • 10k+daily ad impressions tracked for Swiggy partners
  • 10,000+users on Sure Space, a social app I led

Selected work · 7 levels

Clear a level to see how I solved it

Each level is a real project: the problem, what I built and the measured result. Opening one earns XP.

0 / 7 cleared
Cleared

Level 1 · Swiggy · SDE-1 · 2026

Multi-tier sales analytics for leadership

−85%data-fetch latency

Senior leaders (CSH, CH and CLBH) had no direct view of the teams below them. Performance data stopped at the ASM level.

Problem
Leadership needed metrics rolled up from every ASM, and fetching across the full hierarchy was slow.
What I built
A multi-tier analytics system that walks the sales hierarchy and aggregates each level's metrics, with results cached at every node.
Result
Leadership sees performance across the whole hierarchy, and repeated fetches reuse cached nodes, so data-fetch latency fell by 85%.
  • Tree traversal
  • Caching
  • Data aggregation
  • System design
Cleared

Level 2 · ACI Worldwide · 2024–2026

Recruiter Dashboard with AI job descriptions

−40%job posting time

Recruiters spent too long writing job descriptions and tracking applicants across tools.

What I built
A full-stack dashboard on Node.js microservices and React. Recruiters generate job descriptions with AI and track applicants in one place.
Result
Posting a job takes 40% less time.
  • Node.js
  • Microservices
  • React
  • AI integration
Cleared

Level 3 · ACI Worldwide · 2024–2026

Base24-EPS: frontend, auth and delivery

−65%release time

A large platform with a monolithic frontend, fragile authentication services and slow manual releases.

What I built
10+ micro frontends with Nx Workspace in a 10-member team, plus security and resiliency work on the authentication microservices. With 5 engineers I automated AWS deployments.
Result
30% more modular code, 40% better data efficiency, 15% less downtime, and releases 65% faster with 40% fewer deployment errors. Try the release race below.
  • React
  • Nx Workspace
  • Authentication
  • AWS
  • CI/CD
Cleared

Level 4 · Swiggy · 2026

Ad tracking for Swiggy Partners and Pulse

10k+daily impressions

Restaurant partners needed to see how their ads performed, every day.

What I built
Ad tracking and analytics features in React and React Native. I also shipped bill printing for partners and fixed critical production bugs on the platform.
Result
Partners monitor 10k+ ad impressions a day with clearer campaign reporting. Python optimizations cut initial load time by 25%.
  • React
  • React Native
  • Python
  • CI/CD
Cleared

Level 5 · Thoughts2Binary · 2023

AI image generation SaaS

5 hrssaved per image

Producing each image by hand took hours of work.

What I built
A SaaS product that generates images with AI, built in React, TypeScript and Redux on RESTful services. I led product development, architecture and user experience.
Result
The product saves 5 hours of work for every image.
  • React
  • TypeScript
  • Redux
  • REST APIs
  • Generative AI
Cleared

Level 6 · Side project · 2026

Prime Fix, a service-booking app built end to end

Solofull stack

A marketplace that connects customers with service providers, from first tap to payment.

What I built
A React Native app on Supabase and PostgreSQL. I handled the database, authentication, real-time updates and storage myself.
Features
Service provider matching, booking, real-time tracking and payment integration.
  • React Native
  • Supabase
  • PostgreSQL
  • Real-time
Cleared

Level 7 · Sure Space · 2024

Sure Space, a social app for 10,000+ users

−30%onboarding time

A social app that had to onboard people quickly and keep them safe.

What I built
I led 4 engineers on a React and Firebase app with AI-created content, real-time chat, events and user ID verification.
Result
Onboarding is 30% faster, load times are 15% lower and the app is more secure.
  • React
  • Firebase
  • Real-time chat
  • AI content

Mini-game · Release race

Manual releases against my pipeline

At ACI Worldwide I automated AWS deployments with a team of 5. Press start and watch the old manual process race the CI/CD pipeline. Times are relative to the manual release.

Manual release100% of time
Build
Test
Deploy
Automated pipeline35% of time
Build
Test
Deploy
−65%release time
−40%deployment errors

The manual release takes the full time and can fail at deploy. The pipeline finishes in 35% of it.

Experience

The journey so far

Swiggy

SDE-1, via Flexiple

Jan 2026 – Present

  • Engineered a multi-tier analytics system for senior leadership, using hierarchical traversal with node-level caching to cut data-fetch latency by 85%.
  • Developed ad tracking and analytics for Swiggy Partners and Pulse in React and React Native, monitoring 10k+ daily ad impressions.
  • Shipped customer bill printing and resolved critical production bugs on the Swiggy Partners platform, used by millions of people.
  • Optimized performance with Python, lowering initial load time by 25%, and set up CI/CD pipelines for faster releases.

ACI Worldwide

Software Engineer, via Fanisko

Jan 2024 – Jan 2026

  • Built the Base24-EPS frontend in React with a 10-member team, improving data efficiency by 40% across 10+ modules.
  • Designed and deployed 10+ micro frontends with Nx Workspace, raising modularity by 30% and reducing build time.
  • Strengthened the security and resiliency of authentication microservices, reducing downtime by 15%.
  • Built a full-stack Recruiter Dashboard on Node.js microservices and React with AI-generated job descriptions, cutting job posting time by 40%.
  • Automated AWS deployments with 5 engineers, cutting release times by 65% and deployment errors by 40%.

Thoughts2Binary

Associate Software Engineer

May 2023 – Nov 2023

  • Built an AI image generation SaaS in React, TypeScript and Redux, saving 5 hours per image, and led its product development.
  • Established core components of the Granite Stack with React, TypeScript, Node.js and Grommet, speeding up development by 25% across 10+ modules.
  • Led frontend development of Quivers, an order fulfillment and retailer engagement platform, delivering 10+ features that lifted sales and efficiency by 20% for 50+ retailers.

IIT Madras

M.Tech, Computer Science

Aug 2025 – Present

  • Studying computer science at postgraduate level alongside full-time work. Before that, a B.Tech in Computer Science from Maharshi Dayanand University (2019 – 2023).

Skill loadout

Equip a skill to see where I used it

Skills with a blue outline appear in my projects. Tap one and the levels that used it light up. Equip 3 to unlock an achievement.

Languages

JavaScriptC++SQL

Frontend

Next.jsTailwindJestCypress

Backend

Data

MongoDB

Cloud & delivery

DockerGitAgile

AI

GitHub CopilotCursorClaude

Nothing equipped yet.

Education

Learning, formally and otherwise

Indian Institute of Technology Madras

M.Tech, Computer Science · Aug 2025 – Present

Maharshi Dayanand University

B.Tech, Computer Science · 2019 – 2023

Certifications and practice

  • 6 Star in Data Structures and Algorithms, HackerRank
  • 350+ problems solved on LeetCode
  • Google AI Essentials, Google
  • Microsoft SQL Server, Jul 2024

Final level · Contact

Let's talk about your team

I am looking for full-stack and backend roles where performance, reliability and AI features matter. Email is the fastest way to reach me.

jatinkumar.swe@gmail.com
LinkedIn GitHub
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Achievement unlocked