Available for work

Shantanu Bhusari

I build backends that solve the right problem at the right scale. Go, distributed systems, event-driven microservices — 2+ years in production across platforms that had to handle real traffic. I care about what the product needs to do, and I make sure it can be shipped safely.

GitHub LinkedIn Resume

// 06Experience

Freelance Backend Engineer

Leifii MediaJan 2024 – Feb 2026 · Remote, India

–Designed service communication strategy across two e-commerce platforms (15 and 20 services): gRPC for internal latency-sensitive calls, AWS SQS for async event distribution — chosen over Kafka for operational simplicity at this scale.
–Diagnosed Lambda cold start bottleneck (6–9s) caused by Fiber framework overhead (5–10MB) and MongoDB init cost in FaaS context. Documented root cause analysis and migration path to minimal Lambda handlers.
–Built event-driven order state machine: payment_confirmed → delivery_shipped → invoice_generation_queued — explicit event transitions rather than mutable status fields, enabling reliable async fan-out to notifications, inventory, and invoicing services.

Freelance Backend Engineer

Northen AgencyApr 2023 – Jun 2024 · Remote, India

–Delivered 3 production SaaS backends (automotive, fitness, logistics) using Node.js, Express.js, MongoDB — monolithic architecture appropriate for project scale and timeline.
–Built serverless logistics platform on AWS Lambda: sub-10s execution for trip tracking and billing. Single-function deployment pattern (Express wrapped in serverless-http) — later recognised as an anti-pattern and documented in subsequent Lambda work.

B.Tech — Electronics & Telecommunication

Vishwakarma Institute of TechnologyJan 2021 – May 2024 · Pune, India

–Focus on distributed systems and algorithms
–Built 10+ personal projects using JavaScript, TypeScript, Node.js, Express.js, and MongoDB

// 02Skills

Backend

Primary stack across all production systems

Python

Node.js

gRPC

WebSocket

Frameworks

Web frameworks used across production services

FastAPI

Express.js

Hono.js

Databases

MongoDB for flexible schemas · Redis sorted sets for O(log N) feeds

PostgreSQL

MongoDB

Redis

RabbitMQ

AWS

Serverless-first · Lambda + SQS across 3 platforms

AWS Lambda

AWS SQS

AWS SNS

AWS S3

AWS EC2

AWS ECS

AWS EventBridge

DevOps

Containerisation, IaC, and CI/CD pipelines

Docker

Terraform

GitHub Actions

Tools

Daily drivers for development

Claude Code

Cursor

Frontend

Next.js · supporting role in full-stack deliveries

Next.js

React

TypeScript

Currently Learning

Experimenting — not yet in production

Rust

Kotlin

Jetpack Compose

Kafka

ScyllaDB

Kubernetes

← Back to home