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Naina Srivastava

Backend engineer building distributed systems that don't break, APIs that stay fast, and data pipelines that actually work.

Currently Building

Catch-Me-Up – Real-Time AI Meeting Copilot

A bot-free, enterprise-grade Meeting Copilot that captures live desktop audio from native apps (Discord, Zoom) and provides real-time transcriptions and AI summaries.

Universal Audio Capture: Hooks into system audio using chrome.desktopCapture and Manifest V3 Offscreen Documents.
Backpressure Mitigation: Uses asyncio queues to handle 100ms binary streams without blocking the event loop.
High-Throughput Deduplication: Employs Redis Sorted Sets for transient consensus, inherently dropping duplicate uploads.
Memory Optimization: Designed "Eviction Cascades" to move older transcripts from Redis to Qdrant vector DB for long-term semantic retrieval.
Stateless Security: Implements Discord-driven JWT RBAC, baking permissions into the token to avoid database lookups.

Repository

Relay – Async Dispatcher (Part of FlashSaleX)

Standalone microservice that guarantees at-least-once delivery of asynchronous workflows (emails, webhooks, Slack alerts) using the Transactional Outbox pattern.

Consumes events from the Engine's Outbox with zero data loss.
Implements Redis Streams Pub/Sub for horizontal worker scaling.
Features Circuit Breakers with Exponential Backoff to isolate failing third‑party APIs.
Built to decouple critical systems from unreliable downstream services.

Repository

Projects

AI Interviewer – Real-Time Voice Conversational AI

A real-time, voice-conversational AI Interviewer that reads resumes, generates tailored questions using RAG from a company-specific database, and dynamically follows up on answers.

Voice Loop: Handles full voice conversation with browser-native STT/TTS, silence detection (3-second debounce), and keep-alive mechanisms to prevent browser API bugs.
State Management: Uses Upstash Redis to persist session state across stateless Vercel serverless functions.
RAG Pipeline: Integrates Qdrant vector DB with metadata filtering for company-specific question retrieval and structured JSON output constraints.
Low-Latency Inference: Leverages Groq (Llama 3.3 70B) for ultra-fast LLM inference at ~800 tokens/second.

Repository

FlashSaleX – Engine (Sync)

The synchronous high‑throughput checkout engine that handles 10k+ RPS with FastAPI async and Redis atomic DECR.

Handles 10k+ RPS checkout with FastAPI async and Redis atomic DECR.
Synchronous Stripe authorization with typical latency ~300ms.
Dual‑phase Stripe integration with Redis SETNX idempotency locks for exactly‑once settlement.
Containerized with Docker Compose and instrumented with OpenTelemetry + Jaeger.

Repository

RouteIQ – Route Optimizer for Trips & Delivery Fleets

Built TSP and VRP solvers with OR-Tools + Guided Local Search, solving 20-stop instances in under 5 seconds.
Integrated OSRM for real-world travel times and implemented Redis caching, reducing repeated-request latency by 95%.
Developed a Leaflet.js SPA with draggable markers, reverse geocoding, and color-coded multi-vehicle visualizations.
Containerized the full stack with Docker Compose for self-hosted, zero-cost deployment.

Repository ·
Demo

ParivartanAI – AI Legal Aid Backend

Built an end-to-end ETL pipeline processing legal documents: PDF → text extraction → cleaning → chunking → AI summarization (Gemini API with Groq fallback).
Designed a PostgreSQL schema with SQLAlchemy ORM for document storage, pipeline state tracking, and history retrieval.
Implemented an internal gRPC microservice layer for service-to-service communication.
Deployed on AWS EC2 with GitHub Actions CI/CD.

Repository

For The People (FTP) – Civic Issue Reporting

A constituency-bound platform where citizens report issues that get automatically escalated once they cross a community vote threshold.
Built with JWT-based authentication scoped to constituencies, ensuring zero cross-constituency noise.
Async background tasks handle vote-counting and escalation without blocking the API.

Repository

Profilr – CSV Data Profiling Pipeline

A FastAPI + Streamlit data pipeline that ingests CSV files and generates structured JSON reports with:

Missing value analysis, outlier detection (IQR), correlation matrices, duplicate detection.
Auto encoding detection and dataset overview.

Frontend built with Streamlit for interactive data exploration.

Repository

Asteroids Game

Classic Asteroids arcade game built in Python.

Repository

Tech Stack

Languages



Frameworks



Databases & Caching



Infrastructure



Cloud & APIs



Observability



Core Concepts
Async I/O, Outbox Pattern, Circuit Breakers, Idempotency, Distributed Systems, ETL Pipelines, RAG, Vector Databases

Connect

“If you can't explain it simply, you haven't built it resiliently yet.”

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