Development

⬇️ To Download my Resume as PDF, Visit: github.com/sanjib-sen/resume

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💻 Experience

PlanPost AI - (May. 2024 (PT) - ) - Dhaka, Bangladesh

AWS AWS Bedrock LLM RAG redis DevOps React FastAPI

I built the whole IT infrastructure of this startup from scratch and managed to bring 500+ paid users within a month

Supervised, guided and contributed to a Team of 7 to develop a AI-based Digital Marketing Tool planpostai.com to generate social media content including images using LLM and Stable Diffusion Models to post to multiple social media platforms at once with options for scheduled posts.
Used redis-queue to handle scheduled jobs such as posting on social media at a scheduled time, etc.
Used redis to handle and limit simultaneous long running image-generation tasks queue per minute
Used websocket and worker threads+asyncio to handle real time content updates in heavy workloads and multiple long running procedures

Technometrics – (Feb. 2024 - ) - Dhaka, Bangladesh

Python React Django TypeScript Vite Docker

Been responsible for managing and developing multiple confidential and non-confidential military projects

Developed Country’s Military Recruitment Platform joinborderguard.bgb.gov.bd using Django and React with Admit Card Generation, Scheduled SMS, Education Qualification Verification, Payment, Dashboard for exam controllers, Exam Centers, Quota etc
Managed the whole infrastructure from Registration to Recruitment of 200k candidates for civilian and non-civilian jobs
Developed payment.bgb.gov.bd, A fundraise platform to help flood victims in 8 hours using Django
Used Caddy proxy and built customized load balancer to handle 10k requests per hour during peak hours
Used Django QCluster to schedule and queue sending around 100k SMS within limits

Project Waitless – (Feb 2023 - Dec 2023) - London, UK

DevOps NextJS Docker NodeJS TailwindCSS Redis Kafka

My responsibility was to create Web applications including Admin Portal and Dashboard, Discord-Slack-Team bots and DevOps

Created custom flow scripts to replicate real-world scenarios of inventory management procedures of Europe’s popular Bars, Pubs, Clubs, and Restaurants and populated Time Series Database with Upstash Kafka clusters which resulted in over 0.5 million inventory stock data updates streamed in 7 months
Built scraper and automation tools using NodeJS Puppeteer and Python Selenium which collected 100k+ venue data and filtered 70k+ duplicates using Google’s Geolocation API
Created a customizable interactive dashboard with draggable widgets and insight charts with real-time dynamic data using NextJS, MaterialUI, shadcn/ui and recharts
Developed large-scale monorepo using turborepo and Docker containers consisting of web services including admin portal, bot services for slack+discord, server actions for database, cronjobs to automatically post JIRA updates triggering significant increment in productivity
Created conversation-based CRM solutions with wiki and GPT support using OpenAi API

bevycommerce – (Aug 2022 - Dec 2022) - Toronto, Canada

Shopify NextJS GraphQL Redux

I was responsible for making Shopify Apps (both Frontend and Backend) and Extensions and maintain existing Shopify apps based on clients’ needs

Built share-my-cart Shopify extension using vanilla javascript, react, and redux which generated 12k+ clicks, and 400k$+ revenue in sales by Shopify merchants
Developed a preview-enabled CSS editor for styling and customizing Shopify web components from the extension dashboard using NextJS
Replaced Context APIs with Redux-toolkit states and reducers to solve an increasing number of shared states usage problem

penguin.com.bd – (Mar. 2021 - Jun. 2021) - Dhaka, Bangladesh

Java Springboot ReactJS NextJS REST

Me and my team was responsible for creating a backend infrastructure for an ecommerce platform

Created the backend architecture by following the MVC software design pattern to build the country’s top-growing E-commerce platform which led to 33k monthly users
Migrated existing REST API to GRPC which improved the performance of internal microservice API calls by 1.5x

Online Sohopathi – (Dec. 2021 - Apr. 2021) - Dhaka, Bangladesh

NextJS TypeScript Python MongoDB

I was responsible for creating a backend infrastructure and refactoring outdated codes for an ed-tech platform

Developed the backend services with a permission-based manual authentication flow of 600k users
Developed scripts for MongoDB collection migration and schema validation which saved 40+ Engineering hours

Languages: Python, TypeScript, JavaScript, HTML5, MySQL, PostgreSQL, SQLite

Frameworks: NextJS, FastAPI, Django, Flask, Express

Libraries: React, TailwindCSS, PyQt5, trpc, Drizzle, Selenium

Cloud: Docker, AWS EC2+S3+Bedrock+ECS, Firebase, Supabase, Clerk, Pocketbase

Others: Git, Linux, Web Scraping, Automation, CI/CD, etc.

(2022) Top 5: Btechwhiz - Inter-university talent hunt program by Bkash out of more than 800+ candidates
(2021) Champion: Competitive Programming Contest Organized by Sohopathi, out of 3500 candidates
(2020, 2021) Top 3: Intra-University Competitive Programming Contest, BRAC University