H M Naimuzzaman Shuvo, Developer in Savar, Dhaka Division, Bangladesh
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H M Naimuzzaman Shuvo

Full-stack Developer

Savar, Dhaka Division, Bangladesh

Toptal member since June 3, 2026

Bio

Shuvo is a senior product engineer with 5+ years of experience shipping real-time systems and AI-native products at US and European startups—from real-time dashboards (Datatailr NYC) to open banking and corporate payment infrastructure (Dynt.ai Amsterdam) to offline-capable cross-platform POS systems serving 200+ restaurants (Possier India). Currently, Shuvo is building 3 AI products: a RAG-powered tutor, a voice-based AI interviewer, and an autonomous browser agent workflow.

Portfolio

Datatailr
OpenAPI, Swagger, GraphQL, React Apollo, Data Visualization, TypeScript, React...
Dynt
Open Banking APIs, Stripe API, Gocardless API, Swan.io, Yapily API...
Edlar Business Services Pvt
NestJS, Tauri, React Native, MariaDB, WebSockets, WebRTC, AWS IoT...

Experience

  • TypeScript - 5 years
  • React - 5 years
  • WebRTC - 5 years
  • WebSockets - 5 years
  • Node.js - 5 years
  • React Native - 4 years
  • NestJS - 3 years
  • AI Agents - 2 years

Preferred Environment

TypeScript, Node.js, React, React Native, NestJS, Prisma, Tailwind CSS, PostgreSQL, daisyUI, React Query

The most amazing...

...moment was when a restaurant's internet died mid-service—but the POS just kept running—the offline desktop app I built with embedded Node.js and MariaDB worked.

Work Experience

Lead Front-end Developer

2024 - 2026
Datatailr
  • Architected and built the full React 19 front end for a container orchestration platform (Docker jobs, DAG workflows)—20+ routes, 270+ modules—with type-safe Apollo GraphQL and REST API via codegen and validation with Zod.
  • Shipped workflow visualization (DAG graph with React Flow and Dagre, Gantt with Recharts, ANSI log viewer) so users can inspect run topology, timing, and logs in one place.
  • Built reusable DataGrid (sort, resize/reorder, context menu, pagination), cursor-based pagination with reset-on-filter, and URL-synced, Zod-validated filters for shareable list URLs.
  • Established API-to-UI strong type safety using GraphQL Codegen and Orval for OpenAPI-to-React Query hooks and Zod, reducing runtime errors and accelerating feature development.
  • Implemented Role-based access (admin, developer, user), injectable navbar/footer, URL-driven UI action for deep-linkable modals.
  • Improved performance with tiered polling, visibility-based polling, exponential backoff for Workspace Connect, and TanStack Query/Apollo defaults with targeted overrides.
Technologies: OpenAPI, Swagger, GraphQL, React Apollo, Data Visualization, TypeScript, React, Tailwind CSS, daisyUI, React Query, React Flow, Zod, LLM Integration, Cursor AI, HTML5, JavaScript, CSS, Performance Optimization, REST APIs, Project Leadership, Technical Leadership, HTML, API Integration, Integration, APIs, Architecture, Command-line Interface (CLI), Software Architecture, Authorization

Founding Software Engineer

2023 - 2024
Dynt
  • Integrated GoCardless API for open banking services, providing secure accounts data access and payment initiation for customers across 30+ European banks and financial institutions.
  • Engineered an automated invoice and bill processing system with OCR, decreasing processing time by 85% with detailed accuracy.
  • Created a robust expense management system with real-time approval workflows, enabling efficient management of employee spending, streamlining expense management, and enhancing transparency for businesses.
  • Developed a corporate card issuance system, utilizing Stripe's API for seamless generation and management of corporate payment cards.
  • Introduced advanced automation workflows for categorization and reconciliation tools to match transactions seamlessly, reducing manual workload by 90%, enhancing efficiency in financial tracking, and ensuring accurate financial records.
Technologies: Open Banking APIs, Stripe API, Gocardless API, Swan.io, Yapily API, Workflow Automation, AI Agents, CrewAI, LangChain, Prisma, React, tRPC, React Native, Optical Character Recognition (OCR), Expense Management, PostgreSQL, TypeScript, GraphQL, React Apollo, Tailwind CSS, daisyUI, React Query, Zod, LLM Integration, Supabase, Node.js, HTML5, Full-stack, Full-stack Development, JavaScript, Express.js, CSS, Webhooks, Microservices Architecture, Performance Optimization, Code Refactoring, REST APIs, Project Leadership, Technical Leadership, SaaS, Large Language Models (LLMs), Artificial Intelligence (AI), AI Integration, SQL, Stripe, HTML, Resend, Python, AI Tools, API Integration, Agentic AI, Integration, App Development, API Design, APIs, Architecture, Back-end, Software Architecture, System Architecture, ChatGPT, Authorization, Authentication

Full-stack Engineer

2022 - 2023
Edlar Business Services Pvt
  • Designed and implemented a cross-platform POS management system with real-time data synchronization for 200+ clients single-handedly, enhancing efficiency and customer experience.
  • Developed a robust offline ordering desktop app by embedding Node.js and MariaDB into a Windows binary, ensuring uninterrupted service and increasing the system’s reliability by 50%.
  • Reduced AWS cloud operation costs by 70% and improved system performance by managing EC2, S3, and Lambda services.
  • Integrated Stripe, Google Maps, and Twilio API to facilitate payments, location tracking, and SMS notifications.
Technologies: NestJS, Tauri, React Native, MariaDB, WebSockets, WebRTC, AWS IoT, Google Maps SDK, Twilio API, Stripe API, Next.js, Data Visualization, TypeScript, React, Tailwind CSS, React Query, Prisma, PostgreSQL, LLM Integration, Node.js, Socket.IO, HTML5, Android, iOS, Full-stack, Amazon Web Services (AWS), Full-stack Development, JavaScript, Video Processing, Express.js, RabbitMQ, BullMQ, CSS, Webhooks, Microservices Architecture, Performance Optimization, Code Refactoring, REST APIs, Amazon S3 (AWS S3), AWS Lambda, Project Leadership, Technical Leadership, SaaS, Real-time Data, SQL, HTML, MongoDB, AI Tools, API Integration, Integration, MySQL, App Development, API Design, APIs, Architecture, Back-end, Software Architecture, System Architecture, ChatGPT, Authorization, Authentication

Experience

Live AI Tutor

A real-time AI voice tutor for Bangladeshi higher secondary students.

I architected and built end-to-end: a Python back end (FastAPI + Supabase) that orchestrates Pipecat bot subprocesses connected to LiveKit rooms for sub-second voice, with Gemini 3 Flash Preview as the LLM brain and Google Cloud TTS / STT for audio. The mobile app (React Native + Expo, NativeWind v4) renders a live whiteboard on which the bot draws via structured tool calls, with full pause-and-resume across sessions. The bot's LLMContext snapshots persist per turn, allowing seamless rehydration on resume with prior board state.

I designed a chapter-scoped lesson lifecycle and a 2-stage post-session analyzer that runs Gemini structured-output passes to (1) audit each session and (2) maintain rolling per-chapter mastery state used to personalize the next session. I also designed the entire UX—an Apple-Fitness-inspired system spanning Summary, Learn, Practice, and Notes tabs, with bilingual rules (Bangla content, English chrome) baked into a locked design token palette.

AI Voice-interview Research Platform

Built an AI agent platform that automates qualitative market research: founders draft an Ideal Customer Profile, the system recruits candidates from the open web via neural search, conducts voice interviews, and synthesizes findings across them with a strict, structured LLM output. The differentiator—a single tool registry exposed simultaneously over both a chat-completions HTTP API and a Model Context Protocol (MCP) server, so the same capabilities work from a custom web UI or any MCP client (Claude Code, Cursor) with zero duplication. I also designed device-flow authentication via URL-mode elicitation, lazy refresh-on-read for cross-interview synthesis, and client-agent ICP judgment to eliminate redundant LLM calls.

Real-time Collaborative Coding Platform

An all-in-one platform I built solo for live code collaboration and technical interviews. Real-time collaborative code editor, multi-language code execution (JavaScript, TypeScript, Python), WebRTC video and chat, live drawing canvas, and rich-text document editor—all in one room accessible via tokens, no login required. It has real-time sync over Socket.io, video via Agora, and code execution sandboxed in Node.js child processes.

AI Demo Agent – Product Walkthrough Generator

An installable AI agent skill that turns any live web app into a narrated product walkthrough. The pipeline crawls the target with Browserbase and Stagehand, selects the most relevant states for a chosen persona using Gemini Flash vision, generates a voice-over with Gemini TTS, and composes an HTML preview and an MP4 with FFmpeg. I designed the BFS crawler with state-level deduplication, the structured-output selection pipeline, and the FastAPI orchestrator powering both the agent CLI and the web UI. One command returns JSON for downstream agents.

Skills

Libraries/APIs

React, daisyUI, React Query, Zod, WebRTC, Node.js, Socket.IO, REST APIs, OpenAPI, React Flow, Stripe API, Gocardless API, Google Maps SDK, Twilio API, Pydantic, Playwright, Python Asyncio, FFmpeg, Stripe

Tools

React Apollo, Prisma, ChatGPT, Claude, Claude Code, Agora, Vitest, RabbitMQ

Languages

GraphQL, TypeScript, HTML5, JavaScript, CSS, HTML, Python, Python 3, SQL

Frameworks

Tailwind CSS, tRPC, React Native, NestJS, Tauri, Next.js, Express.js, Swagger, LangGraph

Paradigms

Real-time Systems, Code Refactoring, Model Context Protocol (MCP), App Development, Microservices Architecture

Platforms

LiveKit, Vertex AI, Android, iOS, Amazon Web Services (AWS), AWS Lambda, Google Cloud Platform (GCP), CrewAI, AWS IoT, Azure

Storage

PostgreSQL, MariaDB, Amazon S3 (AWS S3), MySQL, MongoDB

Other

WebSockets, Gemini API, LLM Integration, Supabase, AI Voice Agents, Full-stack, Full-stack Development, Webhooks, Performance Optimization, SaaS, Real-time Data, Speech-to-Text (STT), Text-to-Speech (TTS), AI Tools, API Integration, Agentic AI, Integration, API Design, APIs, Architecture, Back-end, Command-line Interface (CLI), Analytics, Software Architecture, System Architecture, Authorization, Authentication, Data Visualization, AI Agents, LangChain, Optical Character Recognition (OCR), Expense Management, Cursor AI, ElevenLabs Solutions, Exa.ai, Pgvector, Agent Skills, Video Processing, Project Leadership, Technical Leadership, Low-latency Software, Large Language Models (LLMs), Artificial Intelligence (AI), Prompt Engineering, AI Integration, Open Banking APIs, Swan.io, Yapily API, Workflow Automation, Browserbase, Stagehand, FastAPI, BullMQ, Resend

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