A dark greyish sky
Mount Fuji

Kumar Saptam

nobody said it was easy

What can I Do

Well, I am a Full Stack Developer


My experience has been quite varied throughout my coding journey. Take a look at any one of them. (Or just scroll)

Web Dev

6 Years Experience

46 Production Projects

App Dev

4 Years Experience

12 Production Projects

4 Active Deployments

Server

2 Production Projects

Dev Ops

3 Years Experience

What have i done

From multi-tenant SaaS platforms to end-to-end encrypted messaging systems, here are some key projects I've architected and built.


Shiphouse E-Commerce Platform

Complete multi-tenant e-commerce SaaS with 800+ API endpoints, drag-and-drop website builder, and real-time order processing. Handles 5000 concurrent clients per store with worker pools processing 50 orders/batch. Deployed with Postgres, Redis, Meilisearch, and full monitoring stack.

800+ API Endpoints
5K Concurrent Clients
50/batch Order Processing
36+ DB Indexes
Multi-Node High Availability
Real-time SSE Updates

POS Billing Platform

High-performance multi-platform billing system processing 600 bills/second. Real-time cross-device sync using WebSockets and Memcache with automatic state recovery.

Payment Platform - AEPS

Biometric payment authentication system with USB fingerprint reader integration. Secure E2E encrypted channel for transactions with NGRX state management.

Govindam - Sakha Social Platform

Microservices social platform with end-to-end encrypted messaging using Signal Protocol. Reimplemented PQXD3H protocol from scratch and verified in CryptoVerif.

Home Service Booking Platform

E-Commerce platform for home services with real-time provider matching, service tracking, and payment processing. Built with mobile-first approach using NGRX.

Laundry Platform

On-demand laundry service with pickup/delivery scheduling and dynamic pricing based on garment type and service.

Jewellery Platform

Custom jewellery e-commerce with dynamic pricing algorithm based on weight, carat, and dimensions. Virtual try-on capabilities.

Shipment Management

Warehouse inventory system with intelligent sorting algorithms and automated retrieval based on FIFO/LIFO strategies.

Shiphouse Website Builder

Responsive drag-and-drop website builder with differential rendering. Published NPM package with monorepo architecture.

Whom i have worked with

My professional journey across innovative companies, from payment solutions to e-commerce platforms.

Shiphouse Ecommerce

2025 - 2026

Senior Full Stack Developer

Led the development of scalable e-commerce platform architecture, implementing real-time inventory management and payment processing systems.

Microservices ArchitecturePayment IntegrationReal-time Systems

Govindam

2024 - 2025

Full Stack Developer

Developed and maintained web applications with focus on user experience and performance optimization.

Web DevelopmentUI/UX ImplementationPerformance Optimization

Shreeva Soft-Tech

2022 - 2023

Software Developer

Built custom software solutions for clients, focusing on backend development and API design.

API DevelopmentBackend SystemsClient Solutions

Swayambhu Innovations

2020 - 2022

Junior Developer

Started my professional journey developing innovative solutions and learning modern web technologies.

Web TechnologiesInnovationLearning & Growth

Tech Stack

Technologies and tools I work with, organized by experience level.


Languages TypeScript 6+ yrs
Languages Python 6+ yrs
Languages Golang 3-4 yrs
Frameworks Angular 4+ yrs
Frameworks React 2+ yrs
Frameworks Ionic 4+ yrs
Frameworks Django 4+ yrs
Frameworks Flask 4+ yrs
Cloud GCP 5+ yrs
Cloud Firebase 5+ yrs
DevOps Docker 3+ yrs
DevOps Kubernetes 2+ yrs
Databases PostgreSQL 3+ yrs
Databases Redis 2+ yrs
Languages HTML/SASS 6+ yrs
Frameworks Flutter 2+ yrs
Cloud Cloudflare 5+ yrs
DevOps Jenkins 2+ yrs
Databases MySQL 4+ yrs

About Me

This is the short version (Ya this is short).

I am a systems-focused Full Stack Engineer with 6+ years of experience building secure, scalable products in startup environments. My expertise spans distributed systems, encryption, and performance engineering.

I have implemented the Signal protocol from scratch, including post-quantum extensions, and built revenue-critical payment systems with redundant transactional safeguards. I engineered a custom ESC/POS printing utility that reduced billing latency from seconds to near-instant by operating below typical OS bottlenecks.

I have led a seven-person team, hired and mentored engineers, and worked directly with CEOs to shape product direction. I have pushed back against insecure decisions and owned production outages under real-world pressure.

I prioritize correctness first, maintainability second, and performance third. My goal is to ship systems that remain reliable under scale, evolving requirements, and operational stress.

Contact Me

You can hit me up on any social media below or just send me a mail.