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Saptarshi Sen
Open to Software Engineering / AI Engineering opportunities

Saptarshi Sen.

Software Engineer building AI-powered products and modern web systems.

I build full-stack applications, real-time systems, and AI-native products - from agentic app builders to AI presentation tools.

Read my writing
prompt → product[ system.flow ]
user.prompt
LLM / agent
structured output
application
ideas, made executable.human in the loop
IIT (ISM) Dhanbad · 2026 GraduateIndia

A little context

About

I like building things that sit at the intersection of software, systems, and AI.

I graduated from IIT (ISM) Dhanbad with a B.Tech in Minerals and Metallurgical Engineering. My path into software wasn't a conventional CS one - I developed my skills by building, breaking, and figuring things out.

That led to full-stack applications, serverless systems, real-time collaboration, and agentic products. Along the way, I worked remotely as a JavaScript / TypeScript expert in the Scale AI ecosystem, contributing to LLM evaluation and feedback workflows.

Now I'm going deeper into AI application engineering, modern AI, and machine learning - without losing the habit of shipping things.

Engineering → Software → AI

How I think about building

Select an intersection ↴

Connected by curiosity. Grounded in engineering.

AI

Turning model capabilities into usable products, while exploring the architectures underneath.

LLMs · Agents · Structured generation · ML

Work & perspectives

Experience

Jan 2025 - Mar 2025

Scale AI

Remote

JavaScript / TypeScript Expert

Expert human feedback and programming data for LLM training and evaluation workflows.

  • Authored and solved programming tasks; reviewed AI-generated JavaScript / TypeScript code.
  • Evaluated responses for correctness and quality, and ranked model outputs.
  • Produced expert-written and revised responses for supervised fine-tuning workflows.
  • Provided preference-based feedback for RLHF-style evaluation tasks.
Jul 2025

Saint Petersburg Mining University

Saint Petersburg, Russia

Summer School Participant

Selected for a UNESCO-backed international summer school on management of the mineral resource sector, including industrial visits and applied case-study work.

Built, not just imagined

Selected Work

A collection of systems, products, and experiments I've built.

AI products / real-time systems
01AI App Builder

Zaap

An agentic prompt-to-app platform that turns natural-language ideas into working React applications.

Next.jsTypeScriptGoogle GenAISSESandpackClerk
  • Agentic prompt-to-app generation
  • Streaming generated code with SSE
  • Live Sandpack preview
Zaap application screenshot
02AI-powered creation & editing

AI Presentation Generator

Converts natural-language prompts into structured presentations, generates visual assets, and provides an editable slide workspace with PowerPoint and PDF export.

Next.jsTypeScriptVercel AI SDKGeminiCloudflare Workers AIPPTXGenJS
  • Structured multi-slide generation
  • Gemini-powered content and AI image generation
  • 960 × 540 slide rendering
AI Presentation Generator application screenshot
03Real-time systems

Collaborative Whiteboard

A real-time collaborative drawing environment built around WebSockets and a Turborepo monorepo architecture.

Next.jsTypeScriptWebSocketsTurborepoPrismaPostgreSQL
  • WebSocket synchronization
  • Shared state and multi-user interaction
  • Turborepo architecture and shared packages
Collaborative Whiteboard application screenshot
04AI-powered practice

AI Interview Preparation

An AI-powered mock interview platform supporting generated questions, voice interviews, transcription, and structured interview sessions.

Next.jsReactFirebaseGeminiVapi
  • AI-generated interview questions
  • Voice interview flow
  • Real-time transcription
AI Interview Preparation application screenshot

A space to play

Lab

Things I build when I don't have a good reason to.

Canvas / Generative art

Generative Canvas

Recursive geometric patterns rendered entirely with HTML Canvas.

Experiment coming soon ↗
WebGL / Interaction

Three.js Experiments

Interactive 3D scenes and WebGL experiments.

Experiment coming soon ↗
ML / Learning

ML Playground

Small experiments while learning modern machine learning and deep learning.

Experiment coming soon ↗

Always a work in progress

Currently Exploring

Modern AI

Attention · Transformers · LLM architectures

Machine Learning

Deep Learning · CNNs · Representation Learning

AI Engineering

Agents · Tool Use · Structured Generation · Streaming

Creative Computing

Three.js · WebGL · Generative Art

Along the way

Achievements

Trailblazer ’23 - Winner

Inter-college CTF Competition

Hackfest ’24 - Finalist

IIT (ISM) Dhanbad Annual Hackathon

Codeforces - Pupil

Max Rating: 1365

CodeChef - 2★

Max Rating: 1590

Where it started

Education

Indian Institute of Technology (Indian School of Mines), Dhanbad

2026

B.Tech - Minerals and Metallurgical Engineering

CGPA: 8.71 / 10

A different starting point. The same curiosity.

Beyond Code

I like building things, but not everything needs to become a SaaS product.

MusicArtCinemaPhilosophyCreative computing

Sometimes I also over-engineer things that absolutely did not need engineering.

Next, something interesting

Let's build something interesting.

Open to software engineering, AI engineering, and technically ambitious projects.