Yash Raj

Full-stack engineer building AI-powered applications & high-performance backend systems.

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Yash Raj

About Me

I'm Yash, a full-stack engineer and previously a Fullstack Developer Intern at Listable Labs (an AEO SaaS startup). I build and ship end-to-end applications using Next.js, TypeScript, Node.js / Bun, and PostgreSQL / MongoDB. I specialize in architecting backend systems with Domain-Driven Design (DDD), building autonomous AI Agents, and engineering RAG pipelines & LLM systems. I also have hands-on experience in cloud infrastructure across AWS & GCP, multi-CMS integration adapters, and automated search engine indexing workflows.

Experience

Fullstack Engineer Intern

Listable LabsFeb 2026 - Aug 2026
  • Built autonomous AI tools and agentic skills using Mastra to streamline complex multi-step workflows and automated backend logic.
  • Developed a ChatGPT Visibility Checker and interactive Answer Engine Optimization (AEO) tools to track, analyze, and elevate brand presence across AI search models.
  • Architected features within a Domain-Driven Design (DDD) codebase, enforcing clean boundaries, modular design, and robust domain models.
  • Engineered multi-CMS integration adapters for seamless, automated article publishing across WordPress, Sanity, Webflow, and Shopify.
  • Integrated Axiom error logging on AWS EC2 with automated Slack and email notifications, alongside GCP Cloud Storage buckets for media handling.
  • Optimized backend data operations using complex MongoDB aggregations, while automating page indexing and SEO crawling via Google Search Console and Bing Webmaster APIs.
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Highlighted Projects

View More On Github

Multimodal RAG Server

BunTypeScriptExpressPostgreSQLPrismaRedis & BullMQGoogle Gemini & PineconeDocker

High-performance Multimodal RAG backend server for ingesting, parsing, vector embedding, and context-aware chatting across Documents, Audio (Whisper), and Video (ffmpeg + Gemma 3 vision) with BullMQ queues and Pinecone.

Code

Image Processing Service

Node.jsTypeScriptExpressRedisPrismaPostgreSQLAWS

A backend-focused image processing service designed to demonstrate real-world backend engineering and distributed caching.

Code

Kelvin

Gemini AITypeScriptNext.jsReactReact QueryPrismaPostgreSQLVercel

AI-powered workflow automation platform integrating GitHub and Notion to generate PRs, issues, and docs.

CodeLive

CrewSpace

TypeScriptNext.jsReactReact QueryPrismaPostgreSQLVercel

Collaborative project management platform with workspaces, task tracking, and real-time team updates.

CodeLive

Linknest

TypeScriptNext.jsReactPrismaPostgreSQLVercel

Minimal Linktree alternative with customizable themes, QR generation, and link analytics.

CodeLive

SocialBird

ViteTypeScriptReactMongoDBExpress

Real-time chat application with WebSocket messaging, presence tracking, and media sharing.

CodeLive

BlogSphere

ViteTypeScriptReactMongoDBExpress

Full-stack blogging platform with authentication, rich-text editing, and comments system.

CodeLive
GitHub Activity@Yashxp1
 

Skills & Technologies

Languages

JavaScriptTypeScriptPythonSQL

Frontend

Next.jsReact.jsTanStack QueryTailwind CSSZod

Backend & Architecture

Node.jsExpress.jsDDD (Domain-Driven Design)Auth.js (NextAuth)OAuth 2.0

Database & Caching

PostgreSQLMongoDBRedisPrisma ORM

AI & Integrations

AI AgentsMastraLangChainRAGVector DBLLM Integration

Cloud & DevOps

AWSGCPDockerGitGitHubVercel