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emranffl/README.md

Emran Hossain

Senior Software Engineer — Full-stack & Platform · Dhaka, Bangladesh

I build multi-tenant SaaS end to end: TypeScript product code on one side,
the cloud estate it runs on the other.

Portfolio · LinkedIn · Writing · Stack Overflow · Email

What I do

Tech lead at Gain Solutions, across three products at once — a support desk, a CRM and an HR/payroll platform. In practice that means:

  • Product engineering — GraphQL/Node services, Next.js apps and React Native clients, shipped to paying Nordic customers in two locales.
  • Platform ownership — a three-account AWS estate (ECS, Lambda, RDS, SES, SQS), per-environment Google Cloud projects, and Cloudflare edge + DNS across four zones.
  • Migrations that can't take downtime — moving live products onto isolated per-environment cloud projects, sequencing OAuth, Pub/Sub and shared-service cutovers one wave at a time.
  • Incident forensics — queue retry storms, recursive Lambda loops, silent schema drift and cost anomalies. Then the alarms that would have caught them a week earlier.
  • AI plumbing — Model Context Protocol servers putting all three products behind OAuth-scoped tool access for AI assistants.

Currently interested in: MCP and agent tooling, cost-aware architecture, and the unglamorous work of making a small team's infrastructure boring.

Selected work
easydesk.app Omnichannel support desk — conversations, knowledge base, workflow automation, email/SMS
gain.io CRM — contacts, calendar, offers, booking, deals
payrun.app HR & payroll — payroll runs, leave, hiring, time tracking, Xero + Jira integrations
MCP servers OAuth-scoped Model Context Protocol servers for all three platforms
@aritslimited/commitlint Shared commitlint config
deep-object-key-alternator Recursive key transformer for nested objects

Stack

Languages TypeScript JavaScript SQL

Backend Node.js GraphQL Apollo Express WebSockets

Frontend & mobile Next.js React React Native Tailwind CSS Zustand i18next

Cloud & platform AWS Lambda ECS Google Cloud Cloudflare Docker Stripe

Data PostgreSQL Redis MongoDB Prisma Drizzle

AI MCP Anthropic LangChain Gemini

Writing

I write up the things that broke and why — incident forensics, migration post-mortems, and architecture notes.

All posts →

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  1. data-security-blockchain data-security-blockchain Public

    Thesis work.

    TypeScript 1

  2. quick-hospitalization quick-hospitalization Public

    A hospital management & doctor's appointment portal made with Next.js, implementing advanced features like OCR from passport's MRZ, QR code links, etc.

    TypeScript 5 1

  3. spacenews-json-cache spacenews-json-cache Public

    A space news web portal that caches it's data fetched from API on first hit by custom algorithm. Subsequent requests are served from the server-side cache which re-validates after certain interval.

    PHP

  4. estately estately Public

    A real estate leasing and renting management system using plain PHP for CSE482 course of Summer 2022.

    PHP 2

  5. karnaugh-map-solver karnaugh-map-solver Public

    A K-Map solver up-to four variables with interactive UI for Windows platform

    Java 1 1

  6. php-sessions-cookies php-sessions-cookies Public

    PHP