Sabbir Rahman
Bhuiyan, Full-Stack Software Engineer & AI Developer

Fintech · B2B SaaS

Soli

Compliance-grade accounting platform for the UAE on web and mobile: invoicing, expense tracking, automated VAT and audit files ready for the Federal Tax Authority.

The core challenge is correctness under regulation. UAE Federal Tax Authority VAT rules are encoded so tax is calculated automatically on every invoice and expense, and audit files are generated in the format the FTA requires. Users keep real-time visibility of transactions and deposits on both web and mobile.

AI · Sales & support · SaaS

qzenchat

Multi-channel AI agent that runs sales, bookings and support across WhatsApp, Instagram, Messenger and web chat, 24/7, in English, Bangla and Banglish.

Built at Quanteron. Within a single conversation, the agent recommends products, checks live stock and prices, creates draft orders and carries them through to confirmed delivery details, and books appointments against the business calendar with reminders in the same chat. Support answers are grounded in each business's own FAQs, documents and website. Customers can switch between English, Bangla and Banglish mid-chat without losing an order in progress. All four channels land in one shared inbox with customer details and order history alongside, where staff can pause the AI, reply directly and hand control back with the full conversation history intact. Teams set the assistant's tone and behavior without code and test it in a sandbox before going live.

AI · Voice · iOS

Whisper: Invisible Advisor

Real-time voice assistant: live Deepgram transcription feeding LLM personas, then tailored feedback.

A latency-sensitive pipeline: speech is transcribed live with Deepgram and passed to a customizable LLM persona that has to respond while the conversation is still happening. Afterwards, it produces a full transcript and personalized feedback to help users improve how they speak. Shipped to the App Store.

Social reading · iOS & Android

Readlink

Social reading app for iOS and Android: tracking, a book-centered feed and AI answers grounded in your own library.

A full consumer product for non-fiction readers. Readers add books by scanning a barcode or importing an entire Goodreads library from a profile link or CSV, then log progress in one tap, with optional backdated dates, half-star ratings and reviews that can stay private. Stats cover books, pages, authors and genres by month, alongside streaks, a yearly goal and a reading heatmap. Recommendations come from the books each reader has actually finished and from readers with overlapping shelves, with a new weekly pick that explains why it fits. The social layer stays focused on books: every post is attached to a real book, passages can be quoted straight into a post, and library matching ranks overlap with other readers and hundreds of curated libraries of founders, writers and thinkers. Readers can also keep highlights tied to chapters, read their own PDFs without the file ever leaving the device, and share a public library page that opens in any browser. Premium adds AI answers drawn only from the books a reader has read, plus deeper reading analytics.

AI · Ed-tech

CleverCore Classrooms

AI ed-tech platform that turns recorded lectures into structured notes and auto-generated assessments.

An end-to-end AI pipeline from classroom audio to study material: lectures are transcribed, organized into structured notes and turned into assessments by LLMs, with role-based access control governing what each user can see. Shipped to the App Store.

Production AI assistant for the Federation of Medical Specialists in the Netherlands, answering in real time with citations to its sources.

Built on StackAI for the national association of medical specialists in the Netherlands. Every response links back to the sources it was drawn from, so specialists can verify an answer before relying on it, and the app serves the organization's queries in real time in production.