Full Stack Developer / 👨🏻‍💻 Shubham Sonwane

Node.js · React · TypeScript · Rust

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Nov 2025 — Present

Full Stack Developer (Independent Contractor)

Self-employed — clients in the US & Italy

  • Built a conversational agent for a vessel booking and tracking platform tool/function calling against client APIs completes bookings and returns live status inside the chat.
  • Implemented the retrieval and state layer behind it: RAG over product docs, streamed responses, and conversation memory persisted across sessions, on the OpenAI and Anthropic APIs.
  • Deliver full-stack product work for two long-running clients: Next.js frontends backed by Node.js APIs on Fastify and Express, with GraphQL, Redis caching, and Postgres via Supabase.
  • Own deployment and infrastructure end-to-end Docker builds, Firebase services, and environment setup with no separate DevOps team.

Oct 2024 — Nov 2025

Full Stack Developer

SeePossible

  • Engineered scalable backend APIs with Node.js and Fastify, improving response times by 40%.
  • Developed a real-time 3D Jewellery Builder, increasing user engagement by 25%.
  • Built a Tauri (Rust) desktop rendering app, cutting render times by 60% vs Electron.
  • Designed CI/CD pipelines that cut deployment errors by 80% for Helzberg Diamonds-scale traffic.

Nov 2023 — Oct 2024

Full Stack Developer

Avinashi Group of Companies

  • Architected the M84 SGCCI government platform with Next.js and Supabase RBAC, 500+ users, 99.9% uptime.
  • Built the BIM Next admin panel with 2D/3D design versioning, reducing review cycles by 35%.
  • Developed Receipt AI with OCR extraction at 95% accuracy, processing 1,000+ receipts monthly.
  • Created an AI Brand Ambassador platform generating realistic marketing models.

Jan 2023 — Sep 2023

Backend Developer (Node.js)

Artoon Solutions Pvt. Ltd.

  • Built backend services for the Diamond Connect baseball platform on Azure with Node.js, Express, and MongoDB.
  • Collaborated with 35+ developers across agile sprints delivering RESTful APIs.
  • Optimized database queries, reducing page load times by 30%.

2021 — 2023

Full Stack Developer (Freelance)

Upwork

  • Delivered 15+ full-stack projects across e-commerce, SaaS, and web apps with 100% client satisfaction.
  • Owned the end-to-end lifecycle from requirements gathering to deployment for clients worldwide.

012025 — Present

Conversational Booking Agent

Independent contract · US client

Chat agent that books vessels, reports live status, and answers product questions without leaving the conversation. Tool calling against the client's internal APIs, RAG over product and operations documentation, and conversation memory persisted across sessions.

Node.jsTypeScriptOpenAI APIAnthropic APIRAGTelegramDiscord

Impact

A multi-page booking workflow collapsed into a single conversation

022024 — 2025

3D Jewellery Builder

SeePossible · Helzberg Diamonds

Real-time WebGL configurator with live diamond-shape, metal, and engraving customisation, plus multi-ring setups. Shipped into a production storefront.

Three.jsReactTypeScriptNode.jsFastify

Impact

Serves thousands of shoppers daily

032025

Tauri Desktop Renderer

SeePossible

Replaced an Electron-based desktop rendering app with a Tauri (Rust) build for professional jewellery visualisation.

TauriRustTypeScriptWebGL

Impact

~60% faster renders, smaller install and memory footprint

042025

Ring Try-On (WebAR)

SeePossible

Browser-based AR that maps 3D ring models onto live hand-tracking data, letting shoppers visualise rings on their own hands.

WebARThree.jsReact

Impact

Mobile-first try-on with no app install

052024

Receipt AI

Avinashi Group of Companies

OCR pipeline that extracts structured fields from receipts, with historical tracking and automated JSON export.

Node.jsOCR pipelineNext.jsSupabase

Impact

1,000+ receipts a month at ~95% field-level accuracy

062024

M84 — SGCCI Platform

Avinashi Group of Companies

Government-facing platform for the Southern Gujarat Chamber of Commerce, architected around role-based access control.

Next.jsSupabasePostgreSQLRBAC

Impact

500+ active users in production

072023 — 2024

BIM Next Admin Panel

Avinashi Group of Companies

Design management system for architecture teams, with version control over 2D and 3D design assets.

Next.jsSolid.jsPostgreSQLNode.js

Impact

Version-controlled design review for architecture teams

082023

Diamond Connect

Artoon Solutions Pvt. Ltd.

Backend services for a baseball league management platform: scheduling and gameplay REST APIs, built inside a 35-developer agile organisation.

Node.jsExpressMongoDBAzure

Impact

~30% faster page loads after query and index rework

Languages

SQL

Frontend

WebGLWebAR

Backend

REST APIsMicroservicesRBAC

Data

AI Engineering

Tool / function callingRAGStreaming responsesConversation memoryOCR pipelinesWorkflow automation

Infrastructure & Desktop

CI/CDSystem designPerformance optimisation

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