SDE I @ Mogi I/O · OTT · AI Pipelines · Scalable Systems

I build systemsthat don't break under pressure.

Full Stack Engineer crafting high-performance OTT platforms, AI-powered tools, and backend infrastructure that handles real scale — 60 FPS mobile feeds to sub-300ms API responses.

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API latency reduced

0fps

Mobile feed performance

Production projects

0yr+

Production experience

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About

Who I Am

I'm a Full Stack Software Engineer with a deep focus on OTT platforms, media infrastructure, and AI-powered applications. Currently shipping production features at Mogi I/O.

My work spans the full stack — buttery-smooth React Native mobile feeds at 60 FPS, to event-driven backend microservices coordinated through Redis and AWS SQS. I treat every millisecond of latency like it matters to a real user — because it does.

Beyond my day job, I build AI products: an LLM-powered resume optimizer with a Gemini → Groq → Ollama fallback chain, and a RAG system for chatting with codebases. I'm actively positioning as an AI-powered backend engineer.

Focus

OTT & Media Platforms

Stack

Node.js · React Native · TS

LLM Pipelines · RAG · Embeddings

Cloud

AWS SQS · S3 · EC2 · GCP

dhruv.config.ts

// engineer.config

export const config = {
name: "Dhruv Saini",role: "SDE I",company: "Mogi I/O",focus: "OTT · AI · Backend",location: "India",stack: ["React Native", "Node.js", "TypeScript", "AWS"],available: true,}

React Native·Node.js·TypeScript·Next.js·PostgreSQL·MongoDB·Redis·AWS SQS·AWS S3·Docker·Kubernetes·HLS·FFmpeg·RabbitMQ·Gemini API·Groq·Ollama·ChromaDB·RAG·Puppeteer·Socket.io·Express.js·Tailwind CSS·React Native·Node.js·TypeScript·Next.js·PostgreSQL·MongoDB·Redis·AWS SQS·AWS S3·Docker·Kubernetes·HLS·FFmpeg·RabbitMQ·Gemini API·Groq·Ollama·ChromaDB·RAG·Puppeteer·Socket.io·Express.js·Tailwind CSS·

Skills

What I Work With

🎨

Frontend

React.jsReact NativeNext.jsTypeScriptAngularReduxTailwind CSS

⚙️

Backend

Node.jsExpress.jsREST APIsMicroservicesEvent-driven ArchitectureRabbitMQ

🤖

AI & LLM

Gemini APIGroq (LLaMA)OllamaRAG pipelinesChromaDBLLM fallback chains

🗄️

Databases

MongoDBPostgreSQLMySQLRedisDynamoDBChromaDB

☁️

Cloud & DevOps

AWS SQSAWS S3AWS EC2DockerKubernetesCI/CDJenkinsGCP

🎬

Media & Streaming

HLSFFmpegVideo TranscodingOTT ArchitecturePuppeteerOneSignal

Experience

Where I've Worked

Apr 2025 – Present

Mogi I/O

Software Development Engineer I

Current

Building scalable OTT infrastructure, high-performance React Native feeds, and async backend systems for a media streaming platform.

↓85% latency

Microservice Refactor

Refactored a 3-service chain into a Redis-coordinated design — eliminated cascading failures, cut p95 latency 85% (2000ms → 300ms), payload size ↓50%.

<200ms writes

Async Write Pipelines

Rebuilt Continue Watching & Watch Later with write-behind pattern across AWS SQS, MongoDB, Redis — achieving sub-200ms perceived write latency in the UI.

60fps native

KLIP — Short-form Video Feed

React Native feed with gesture navigation and tight render discipline, holding ~60 FPS (17ms/frame). Social actions (likes/comments) under 100ms feedback.

3-layer auth

OTP Passwordless Auth

End-to-end passwordless login across RN client, verification APIs, and session handoff — with defensive expiry, rate-limit, and predictable UX status mapping.

OneSignal

Push Notifications

Integrated OneSignal on React Native — permission prompts, foreground display, deep link routing, and actionable payloads (coupon copy-to-clipboard).

3-step funnel

Shoppable Reels Funnel

Built 3-step in-player commerce funnel (discovery → product → checkout) with caching-aware reads minimizing blocking calls on the watch surface.

2 pipelines

Dual Analytics Pipelines

Designed two independent pipelines for revenue and storage/cost signals — supporting near-real-time troubleshooting views and daily batch rollups.

3 families

GCP Cost Automation

Automated GCP hygiene using schedules and retention policies across 3 resource families — reclaiming orphaned capacity and reducing recurring cloud waste.

↓85% API Latency60 FPS Native<200ms Writes↓50% PayloadAWS SQS AsyncRedis Cache Layer

Projects

What I've Built

A mix of production AI tools, media infrastructure, and real-time systems — each solving a real problem.

AI/LLMRAGBackend

RepoMind

RAG backend that answers questions about any GitHub repo

Ingests a GitHub repository, parses code into function-level chunks across Python/TS/JS/Go/Java, embeds them with Ollama into ChromaDB, and builds an import graph in PostgreSQL. Ask pipeline retrieves by vector similarity, expands related files via the import graph, then grounds an Ollama chat answer in the retrieved code — with auditable Query/QueryChunk records of what grounded each response.

FastAPIPythonPostgreSQLChromaDBOllamaRAGGitPythonSQLAlchemy

GitHub →

2026

AI/LLMFull StackLive

ResuMate

AI-powered resume optimization platform

A full-stack AI platform that analyzes resumes against job descriptions, rewrites them to be ATS-optimized, and generates polished PDFs. Built a multi-stage AI pipeline with Gemini → Groq (LLaMA) → Ollama fallback chain for resilience. Features checkpoint-based PostgreSQL saves, Cloudinary file storage, four Puppeteer HTML-to-PDF templates, and resume parsing for PDF/DOCX files.

Next.js 15Node.jsPostgreSQLGemini APIGroqOllamaPuppeteerCloudinaryTypeScript

GitHub → Live Demo

2025

MediaAsyncHLS

Transformer

Media transcoding engine with HLS output

Upload-to-playback transcoding pipeline with 4-rung adaptive bitrate (1080p / 720p / 480p / 360p), HLS packaging, poster and thumbnail generation, storage-backed manifests, async worker orchestration, RabbitMQ fan-out, exponential backoff, and dead-letter queue handling.

Node.jsRabbitMQFFmpegHLSAWS S3Worker PoolsTypeScript

GitHub →

2026

Full StackProductivityRealtime

StackTask

Modern productivity & task management platform

A modern full-stack task management application focused on productivity, realtime updates, and clean workflow organization. Features secure JWT authentication, CRUD task management, priority levels, due dates, progress tracking, optimistic UI updates, and a fully responsive dashboard.

React.jsNode.jsMongoDBExpress.jsJWT+1

Code → Live →

BackendDistributedScheduler

DeployFlow

Distributed cron & event scheduler

A backend scheduling system for delayed jobs, recurring tasks, and distributed event execution. Includes retry queues, failure recovery, execution monitoring, modular worker services, Redis-backed scheduling, and scalable background processing.

Node.jsCronMongoDBExpress.jsRedis

Code → Live →

RealtimeWebSocketFull Stack

Chatter Box

Real-time chat application with WebSockets

A production-grade one-to-one messaging application featuring real-time communication with Socket.IO, typing indicators, read receipts, online presence, JWT authentication, protected routes, and a responsive WhatsApp-inspired interface powered by an event-driven backend.

React.jsNode.jsExpress.jsMongoDBSocket.IO+1

Code → Live →

Contact