OPEN FOR SDE ROLES • FEB 2026

Architecting
Scalable Systems

I am Siddhant Jaiswal, a Backend-Heavy Full Stack Engineer. I don't just write code; I build production-grade architectures handling thousands of requests, migrating legacy systems, and integrating complex AI models.

View Production Work Contact Me

500+

LeetCode Solved

Paid SaaS Clients

99%

System Uptime

50k+

Lines of Code

Technical Arsenal

Tools I use to build scalable solutions.

Backend Mastery

Node.js Python Go (Golang) PostgreSQL Redis Microservices Docker

AI Engineering

GPT-4 Integration RAG Voice AI (Bolna) Prompt Eng Hybrid Recommenders

Frontend & Mobile

React Native Next.js 15 TypeScript Expo Kotlin (Modules)

Featured Production Work

B2B SaaS • LIVE

SniperThink AI CRM

Enterprise AI Calling Platform

A comprehensive B2B SaaS platform enabling businesses to automate outbound calling campaigns using AI voice agents. Currently serving 5 paid clients with 100+ daily calls.

Architecture: 80+ microservices handling concurrent AI voice streams with zero latency.

Migration Success: Zero-downtime migration from ElevenLabs to Bolna.ai for voice synthesis.

Resilience: Implemented bulletproof concurrency management using global locks.

Node.js PostgreSQL Bolna.ai React 18

Live Demo Backend Repo

MOBILE • VIDEO

The Club

Service Marketplace with Video Feeds

A revolutionary cross-platform mobile app connecting creators with buyers via reels. 50,000+ lines of code, combining complex video engineering with seamless UI.

Video Pipeline: Custom FFmpeg server on Railway, reducing file size by 40% (CRF 23).

Native Modules: Wrote custom Kotlin code for ExoPlayer caching, achieving 85% cache hit rate.

Hybrid AI: Collaborative filtering algorithm for personalized feed recommendations.

React Native Supabase Kotlin FFmpeg

Source Code

ENTERPRISE SYSTEM

HRMS Production System

Automated Payroll & Attendance

Lead Architect for a production HRMS that replaced manual Excel tracking. Features face detection attendance, automated payroll engines, and tenant-specific logic.

Backend Power: Python Django + Celery + Redis for asynchronous processing of payroll calculations.

Data Integrity: Optimized PostgreSQL schema with critical indexes for reporting speed.

Django Celery Redis Docker

Time-Travel Debugger

Python library enabling step-backward debugging, inspired by competitive programming dry-runs. Published on PyPI.

Python PyPI Library Design

View on PyPI

E-Commerce AI Recommender

Intelligent system using OpenAI GPT-4o-mini for personalized, explained recommendations with Admin Testing Panel.

Next.js 15 OpenAI Prisma

Live Demo

Ready to scale your backend?

I am currently available for Full-time Software Engineering roles (starting July 2026) and collaborative projects.

sddhantjaiii@gmail.com LinkedIn

Architecting Scalable Systems