OPSHUB
In ProgressA multi-tenant operations platform designed around real business workflows: POS, inventory, finance, permissions and auditability.
Backend · Full-stack · Systems
I’m Bishwajit Karmaker — a developer focused on dependable APIs, structured data and interfaces that make complex systems feel simple.
Selected systems
Projects where architecture, product decisions and production constraints matter as much as the interface.
A multi-tenant operations platform designed around real business workflows: POS, inventory, finance, permissions and auditability.
A production art portfolio and inquiry platform built for a real client, including media delivery, authentication and deployment.
The full-stack system behind this portfolio, with API-managed content, owner authentication, contact workflows and résumé generation.
How I work
My mathematics background shaped how I approach software: break the problem down, make the rules explicit, test assumptions and keep the structure understandable.
See experience →REST APIs, authentication, relational modelling, validation and business rules with Django and DRF.
Responsive Next.js interfaces that expose complex workflows without exposing their complexity.
Deployment, debugging, integrations and the less glamorous work required to keep software usable after launch.
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