10+ years · SaaS, AI, CMS, Remotion, and complex issue recovery

Shuvo Anirban Roy

Senior Full-Stack JavaScript Developer

Senior full-stack developer with 10+ years of experience shipping React, Next.js, Node.js, Sanity, SaaS, CMS, AI-assisted workflow, and Remotion video work for founders, agencies, and client teams. Strong at owning production features, recovering stalled AI-assisted work, debugging complex issues, and keeping delivery fast without sacrificing maintainability.

Experience

Lead AI Engineer Presentia AI

Dec 2024 - Present

London, UK Contract

Built AI-assisted product workflows and editor experiences for a SaaS presentation platform focused on speed, usability, and production output.

Engineered multi-agent AI workflows using OpenAI, Azure, and Gemini for content generation and backend automation.
Designed and shipped a Canva-inspired AI presentation editor that turned complex prompts into production-ready slide decks.
Reduced token spend and API latency through prompt and request optimization while improving response quality.

Full Stack Developer Operation Nation

Sep 2022 - Present

Phoenix, AZ Full-time

Delivered SaaS product and marketing builds across AI presentation tooling, reusable UI systems, and CMS-driven websites.

Drove a 300% conversion lift by redesigning the AI presentation upgrade flow and making the offer easier to understand and adopt.
Built a customizable AI presentation product with multiple agents, image optimization, and prompt tuning across 12 visual styles.
Released a Sanity SEO plugin and no-code website builder that supported dynamic client sites and automated schema markup.

Senior Full Stack Developer BuiltForYou Digital

Feb 2025 - Oct 2025

Remote Full-time

Delivered SaaS, marketing, and streaming products with strong performance targets, secure authentication, and production-ready data infrastructure.

Improved page load speed by 40% and achieved 95+ Lighthouse scores across 15+ device categories.
Architected JWT and OAuth-based authentication with MakerKit and Supabase for 1,000+ users while reducing delivery time.

Full Stack Developer Matthew Luke Studio

Jan 2021 - Aug 2022

Hackleton, UK Full-time

Built bespoke client websites, ecommerce storefronts, and CMS-driven web applications with modern JavaScript stacks.

Delivered 12 custom web applications using React, Node.js, Express.js, and MongoDB.
Built 5 Shopify ecommerce websites with custom React components, Storefront API integration, and inventory workflows.

Earlier Experience

Frontend Web Developer, 123workforce · 2019-2020

Built responsive workforce management interfaces and component systems with a strong focus on reuse and frontend quality.

Developed 45+ responsive web pages using HTML5, CSS3, SASS, JavaScript, and jQuery with a mobile-first approach.
Created a reusable UI library with 60+ React and Styled Components that reduced development time by 35%.

Full Stack Developer, Boi Kotha · 2018-2019

Engineered a book publishing platform with secure authentication, payments, and user-facing product improvements.

Built a full-stack publishing platform using React, Node.js, Express.js, and MongoDB with role-based access control.
Developed REST APIs for inventory, orders, and payments serving 3,500+ registered users.

Full Stack Developer, Code Builder IT · 2016-2018

Delivered custom websites, ecommerce builds, and admin systems for local clients using PHP and JavaScript stacks.

Developed 10+ custom web applications using PHP, MySQL, JavaScript, and jQuery.
Built an ecommerce platform with shopping cart, bKash and SSLCommerz integrations, and an admin dashboard.

Core Skills

Frontend

React, Next.js, TypeScript, Astro, Svelte, Tailwind CSS, Panda CSS

Backend

Node.js, Express.js, REST APIs, GraphQL, WebSockets, FastAPI

CMS & Data

Sanity CMS, Payload CMS, PostgreSQL, MongoDB, Supabase, MySQL, Redis

Delivery

Vercel, Docker, GitHub Actions, Performance optimization, AI workflow recovery, Remotion video, SEO, Agile delivery

Selected Projects

Remotion Captioneer

Open-source Remotion toolkit for programmatic video captions, word-level synced subtitles, animated presets, and multi-provider transcription workflows.

github.com/neutral-Stage/remotion-captioneer

TYPO SIEGE

Browser typing game built with Canvas and TypeScript, featuring wave logic, power-ups, responsive controls, and zero-dependency sound design.

github.com/neutral-Stage/typo-siege

Gmail MCP Server

MCP server for Gmail that gives AI agents safe tools to search, read, send, label, and batch-manage email through a local, privacy-first workflow.

github.com/neutral-Stage/gmail-mcp-server

Church Finance

Full-stack finance SaaS-style dashboard for funds, transactions, contributions, reporting, and role-based access using Next.js and Supabase.

github.com/neutral-Stage/church-finance

AI-Powered Portfolio Video

Programmatic video prototype using Remotion compositions and AI-assisted narration to turn portfolio content into a concise brand video.

github.com/neutral-Stage/ai-powered-portfolio-video

Sanity Plugin Schema Markup

Sanity Studio plugin that helps CMS teams manage schema markup and structured data directly inside their editorial workflow.

github.com/Operation-Nation/sanity-plugin-schema-markup

Education

B.Sc. in Computer Science and Engineering
National University of Bangladesh, Dhaka, Bangladesh · 2018

Certifications

Decoding DevOps - From Basics to Advanced Projects with AI (in progress)
Coding Exercises: React.js
Learning Full-Stack JavaScript Development: MongoDB, Node, and React