Backend & APIs
Services and real-time
- Django
- FastAPI
- Node.js
- REST APIs
- GraphQL
- WebSockets
Software Engineer — Dhaka, Bangladesh
Backend · System Architecture · Database Design · AI Systems
I build scalable backends and agentic AI systems. Multi-tenant SaaS, distributed workflows and RAG pipelines — designed like an engineer, not a demo.
- PYTHON · DJANGO · FASTAPI
- POSTGRESQL · PGVECTOR
- MULTI-TENANT SAAS · RAG · AGENTS
- 3+ YEARS SHIPPING
01About
Architecture, backend, agents and interface, all by one engineer. Three years of shipping multi-tenant SaaS and agentic systems that run billing, messaging and AI conversations in production.
- 3+ years
- Professional Experiences
- 20+
- Live Products Shipped
- NowSoftware Engineer (L2) at Echologyx Ltd.
- ShippedArgon Chatbot · Tourtoise
- EducationB.Sc. Materials & Metallurgical Eng., BUET
01
System architecture
Multi-tenant SaaS and data models designed to grow without rewrites.
●Argon Chatbot
02
Backend & integrations
Billing, webhooks and messaging channels that deliver reliably.
●Echologyx
03
AI agents & automation
Agents that retrieve, decide and act: grounded answers, lead scoring, bookings, human handoff.
●Echologyx · Tourtoise
04
Full products, solo
Idea to live product, interface included. One owner, no handoffs.
●Argon · Tourtoise
02Skills / Tech
Grouped by what each tool does. Highlighted ones are what I use day to day.
06
AI & Retrieval
Agents and grounding
- Google ADK
- RAG
- Gemini
- Pinecone
- Vertex AI
Data & Queues
Storage and async work
- PostgreSQL
- pgvector
- Redis
- Celery
- MongoDB
Languages & Frontend
Code and interfaces
- Python
- TypeScript
- JavaScript
- C++
- React
- Next.js
Integrations
Billing and channels
- Stripe
- Messenger
- Amazon SES
Cloud & DevOps
Where it runs
- Docker
- AWS
- Google Cloud
- Cloudflare R2
- Firebase
Daily driverAlso used
03Projects
Two deep dives into systems I designed — architecture, schema, trade-offs and the parts that went wrong before they went right. Each opens as a full presentation.
04Experience
From affiliate marketplaces to multi-tenant AI platforms.
- 3+ years
- Professional Experience
Software Engineer (L2)
CurrentEchologyx Ltd.
Mar 2024 – Present2 yrs 8 mos
Software company building an AI-powered chatbot platform for businesses.
Multi-tenant backend Django services with subscriptions and Stripe.
AI redesign FastAPI, Google ADK and Pinecone for sharper answers.
Messaging channels Messenger, WhatsApp, Instagram and SES.
Vector search Product and variant retrieval for recommendations.
MERN Stack Developer
Aaykori Digital
Jul 2023 – Dec 20236 mos
Digital company building affiliate marketplace and HR management software.
Marketplace CMS Product listings, campaign tracking, analytics.
HRM modules Employee data and live performance dashboards.
APIs & components Secure REST APIs, reusable React UI.
Education
B.Sc. Materials & Metallurgical Engineering
Bangladesh University of Engineering and Technology (BUET) · 2021
- 125+
- LeetCode problems solved
- 1420+
- CodeChef rating (2★)
05Writing
A few guides and ideas I’ve shared on Medium, from interface details to AI agents and system design.
06Contact
Need a backend, an AI feature, or a whole product shipped? Tell me what you're working on, or ask my assistant right now.