Md Irfan Hasan Fahim.
Lead Developer & Backend Architect
Professional Summary
Software Developer with 3+ years of production experience building high-throughput SaaS engines, optimizing database runtimes, and migrating logics to cross-platform systems. Specialist in NestJS/Django backend microservices, compound database query indexing, and low-latency API architectures serving 40,000+ users.
Technical Skills
| Programming Languages | TypeScript, JavaScript, Python, C/C++, Kotlin, Go |
| Backend & Frameworks | NestJS, Node.js, Django, FastAPI, Express.js, GraphQL, REST APIs |
| Cloud & DevOps | AWS (EC2, S3, Polly), Docker, Coolify, Git, GitHub Actions CI/CD |
| Databases & Caching | PostgreSQL, MongoDB, Redis, MySQL, Prisma ORM |
| Frontend & Mobile | Next.js 14/15, React, SvelteKit, Kotlin Multiplatform (KMP), Flutter |
| Specialties & Tools | System Architecture, Microservices, OpenCV, Face Recognition, Local-First Dev |
Professional Experience
Lead Developer & Owner
Kanect- Built and deployed InventoryPOS, a multi-tenant SaaS handling invoicing, automatic WhatsApp alerts, and inventory logs in NestJS.
- Architected a 3-app food delivery system using Kotlin Multiplatform (KMP) to share API, database schemas, and state logic between Android, iOS, and Web.
- Optimized Redis middleware and database pool counts, ensuring sub-second response times under concurrent loads.
Backend Developer & Consultant
Ryven.co & Achieve- Designed a student management CRM and dashboard serving 14 branches and 40,000+ students.
- Optimized MongoDB compound indexing and aggregation pipelines, reducing dashboard query latencies from 650ms to 45ms without Redis caching.
- Decoupled microservice connections, preserving student dashboard uptime during admin query loads.
Software Assistant
Muktir Ghonta- Began professional backend programming at age 15 alongside high school, writing Python scripts and micro-automation scripts.
- Maintained school databases, automated grade dispatches, and built organizational landing pages.
Key Projects
InventoryPOS Multi-Tenant SaaS
NestJS / PostgreSQL / Prisma / DockerFull commercial SaaS system supporting localized payment channels, multiple inventory tiers, and automated subscriber alert cron-jobs.
MRT Buddy Kotlin Migration
Kotlin Multiplatform / SQLite / FlutterMigrated travel route calculations and localized pricing logics from Flutter to a shared KMP module, achieving offline performance on Android & iOS.
OpenCV Face Recognition System
Flask / OpenCV / Python / DjangoLightweight biometric validator using custom face embeddings, winning the Champion title at the Bangabandhu National Science Fair 2023.