Razib profile

Razib

Full-stack product engineer

Thoughtful interfaces.
Reliable systems.
Clear communication.

From the first product decision to the details that make it work.

Let’s talkRésumé — coming soon

Products, systems, and research

Selected work

A closer look at the problems, decisions, and details behind the work.

Commerce platform

DenZo — Multi-Vendor E-Commerce Marketplace with Payments and Logistics

A multi-portal marketplace that coordinates seller-owned catalogs, server-authoritative checkout, verified payments, and courier fulfillment.

Role
Solo founding engineer and CEO
Contribution
Portal, commerce, payment, logistics, and infrastructure engineering.
Stack
Next.js · TypeScript · NestJS · PostgreSQL
Outcome
Four applications, 15 services, and six shared packages in the audited source.
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Real-time communication

Serendiply — Anonymous Text and Video Chat with Interest-Based Matching

A web chat platform combining WebRTC video, Redis-backed matching, real-time messaging, and reporting workflows.

Role
Full-stack implementation contributor
Contribution
Chat, Redis matching, WebRTC signaling, reports, and recovery paths.
Stack
Next.js · TypeScript · WebRTC · Socket.IO · Redis
Outcome
Implemented text/video and moderation workflows with concurrent matching recovery.
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Developer and writing tool

iLoveMd — Browser-Based Markdown Editing, Annotation, and Document Export

A local-first browser workspace with Markdown editing, rendered review, revision-aware annotations, and document exports.

Role
Workspace implementation contributor
Contribution
Rendering, storage, annotations, and browser export workflows.
Stack
React · TypeScript · IndexedDB · Markdown · Playwright
Outcome
Preview and export share one rendering engine and a selected document snapshot.
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Household operations PWA

Mess Meal Management — Shared-Household Meal Planning and Expense Tracking

A React and Supabase PWA for meal registration, shared expenses, deposits, inventory, and household reporting.

Role
Application and database implementation
Contribution
Meals, cutoffs, time synchronization, financial reporting, and migrations.
Stack
React · TypeScript · Supabase · PostgreSQL
Outcome
Implemented meal, expense, deposit, inventory, and settlement reporting workflows.
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Data-backed web application

PhoneDB — Smartphone Research and Comparison with a Custom Data Pipeline

A smartphone catalog and four-device comparison app backed by MySQL and a separately built Python collection pipeline.

Role
Scraper creator and application engineering contributor
Contribution
Dataset collection, ingestion, API/database hardening, and catalog flows.
Stack
Next.js · Express · MySQL · Python
Outcome
Historical 4,144-row catalog; four-device comparison; published dataset.
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Computer vision research

Pose-Guided Camera Framing — Computer Vision Guidance for Solo Photography

A multi-task vision prototype that combines image features and human pose to assess framing and generate camera-adjustment instructions.

Role
Project lead and primary researcher/developer
Contribution
Annotation, modeling, evaluation, browser inference, and research communication.
Stack
Python · PyTorch · MediaPipe · ONNX
Outcome
84.1% primary-split accuracy; 87.5% agreement on 96 evaluated instructions.
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Applied NLP course project

AI Text Moderation — Five-Class Chat Classification with BERT-Tiny

A five-class moderation experiment with weighted BERT-Tiny training, baseline comparison, and local Flask/browser demonstrations.

Role
Team pipeline, training, and demo contributor
Contribution
Preprocessing, weighted training, comparison, Flask demo, and reporting.
Stack
Python · PyTorch · scikit-learn · Flask · ONNX
Outcome
Recorded transformer test accuracy 93.42%; macro F1 83.86%.
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More projects

Experience

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Skills

Representative stack · confirm before publishing

Frontend
React, Next.js, TypeScript
Backend
Node.js, REST APIs, PostgreSQL
Delivery
Git, Testing, Accessibility

About

I care about how a product feels and how it works.

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News

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Contact

Have a product in mind?
Let’s talk about what you’re building.

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