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Harsh Singh.
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Full Stack Engineer @ Criteo5+ YOE

Hi, I'm Harsh SinghI build full-stack systems that {scale} — from ad-tech platforms to playful web experiments.

AI-powered tools, tight UX, and production-grade infra—shipping products people actually use.

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5+

Years shipping production software

5

Live side projects on the web

37%

MoM lift on flagship campaign work

Professional Journey

Where I've Shipped Impact

Fullstack Engineer-2

Criteo

📍 Gurgaon, India

Apr 2025 – Present
  • Led a client-facing campaign management platform: UI workflows for advertisers to configure projects and trigger automated budget optimization.
  • Built a scalable Angular and TypeScript configuration system for complex advertiser state and multi-project navigation.
  • Owned self-hosted n8n on AWS: EKS, Kubernetes configs, DNS, and ACM certificates.
  • Shipped event-driven notifications and reporting with NestJS and Nodemailer for stakeholder alerts and execution logs.
  • Technical lead for Agentic Factory (Dust, Glean, n8n); led Helm-based migration from v1 to v2 on Kubernetes.
  • Contributed to 37% MoM improvement in campaign performance and 3× better budget pacing via UI-driven scheduler orchestration.
AngularTypeScriptNestJSAWS EKSKubernetesn8nHelm

Fullstack Engineer-1

Criteo

📍 Gurgaon, India

Jan 2023 – Apr 2025
  • Developed and scaled Retail Media JS (RMJS) for high-performance ad placements across 100+ production sites for 5+ major clients.
  • Built Gerrit–Slack monitoring with Node.js and TypeScript for repository changes and automated PR notifications.
  • Enhanced MyWeekly reporting with resilient APIs and Angular/NestJS frontends for 50+ concurrent internal teams.
TypeScriptNode.jsAngularNestJSSlack API

Application Development Analyst

Accenture

📍 Hyderabad, India

Aug 2021 – Jan 2023
  • Delivered features for Intel Web Order Management (WOM): responsive B2B e-commerce UI with Angular and SAP Hybris.
  • Raised Google Lighthouse score from 30% to 100% via accessibility work and advanced Kendo Grids for data visualization.
  • Resolved 300+ UI and functional defects (~12% of project issue volume) while meeting enterprise quality standards.
AngularSAP HybrisTypeScriptKendo UILighthouse
Selected Work

Featured Projects & Live Tools

5 Production Applications

AlgoMotion

Featured DSA Platform
Live

Interactive Data Structures & Algorithms learning platform featuring Blind 75 & NeetCode 150 visualizers, step-by-step frame animations, pattern recognition quiz arena, multi-language execution trace generators, and AI coaching.

Next.jsTypeScriptAlgorithmsAIDSA
Visit Live Site

RemoteJobs

Live

A remote-first job board for developers and digital nomads—browse curated listings, filter by role type, and connect with remote-friendly teams.

Next.jsJobsRemote
Visit Live Site

ValoAnalyzer

Live

AI-powered Valorant match analysis: enter your Riot ID and tag to review recent games, surface playstyle insights, and see what’s working—plus concrete angles to improve.

Next.jsAIValorant
Visit Live Site

Play Guitar

Live

In-browser guitar note trainer: microphone pitch detection against a target note and frequency, with XP and tiers so practice stays focused and measurable.

Web AudioNext.jsUX
Visit Live Site

YT Ideas App

Live

YouTube video ideas generator: channel-aware prompts powered by the ChatGPT API—full-stack Next.js workflow with thousands of ideas generated for creators.

ReactNext.jsOpenAI API
Visit Live Site
Core Expertise

What I Bring To The Table

01

Full-stack platforms

End-to-end features across Angular, React, Next.js, and NestJS—clear state modeling, resilient APIs, and UI that stays fast under load.

02

Cloud & reliability

AWS, Kubernetes, Helm, and observability-minded delivery so services stay deployable, measurable, and easy to operate.

03

AI-assisted products

Practical LLM workflows (OpenAI, LangChain, n8n) with guardrails—tools that feel helpful, not gimmicky.

About me

I'm Harsh — a software {engineer} who cares about outcomes.

I focus on end-to-end ownership: advertiser-facing workflows, resilient services, and production infrastructure on AWS and Kubernetes. Outside of work, I like shipping small, sharp web apps—tools that mix UX, audio or game data, and modern AI APIs.

Core Skills & Focus

TypeScript

Strong typed applications, shared API types, and reliable cross-stack development.

React / Next.js

Modern web interfaces, performance-first pages, and component-driven UX.

Angular

Enterprise UI patterns, scalable modules, and structured application architecture.

Node / NestJS

Backend services, API orchestration, and event-driven workflows.

AWS & Kubernetes

Cloud deployments, infrastructure automation, and production-ready reliability.

Technology Stack

Languages & frameworks

Node.jsNestJSTypeScriptJavaScriptAngularReactNext.jsHTML5CSS3

Infrastructure & tools

AWS (EKS, Route53, ACM)DockerKubernetesHelmCI/CDPrometheusGit

Data & automation

MariaDBMySQLn8nLangChainOpenAI APIAI-assisted development (Copilot, Cursor, Claude)
EducationGPA: 8.97 / 10

B.Tech in Computer Science and Engineering

Shri Shankaracharya Group of Institutions

📍 Bhilai, India•Graduated Jun 2021
Get In Touch

Let's build something extraordinary together.

Whether you want to discuss full-stack engineering, AI integrations, or explore potential opportunities, feel free to reach out!

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Connect on:GitHub ↗LinkedIn ↗