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Full Stack Developer • Software architect • AI Engineer

Built to scale.
Designed to
think.

I'm Subhra. I bring architecture, full-stack engineering, and applied AI together to build systems that work in the real world.

Explore my work More about me ↓
Bengaluru, India / Engineering since 2018

Tools I build with

  • Node.js
  • React
  • Next.js
  • TypeScript
  • Python
  • FastAPI
  • OpenAI
  • Claude
  • AWS
  • Google Cloud
  • Docker
  • Kubernetes
  • Terraform
  • Django
  • GraphQL
  • Kafka

01 / Selected work

Real systems.
Real scale.

01AngelOne AMCFinance / Platform architecture
AngelOne AMCProject sketch

Platform growth supported

1,0001M
01 / CollectStock data
02 / ProcessPython · FastAPI
03 / ExchangeNSE

Real-time data over WebSocket

From market data to the infrastructure behind it.

The work behind the product

From the first users to a million.

An end-to-end finance platform, from Python services and real-time market data to the infrastructure supporting its growth.

  • FastAPI
  • WebSocket
  • Kubernetes
  • Terraform
My contribution
  • Built a Python FastAPI system to collect stock data and transmit it to the National Stock Exchange (NSE).
  • Built frontend and backend applications from the ground up, supporting platform growth from 1,000 to 1 million users.
  • Architected the technology stack, network security, and deployment infrastructure using Docker, Kubernetes, Jenkins, and Terraform.
  • Implemented real-time stock data exchange over WebSocket.
Client engagement · Saranyu TechnologiesArchitecture & engineering
02VideoVerseReal-time / Live streaming
VideoVerseProject sketch
● Live streamingWebRTC / Ant Media
One to manyOn air.
One to oneConnected.Video + chat
100Kconcurrent streams
scaled from 1,000
A broadcast is only as good as its connections.

The work behind the product

Live experiences. At serious scale.

A live video platform with one-to-one and one-to-many streaming, multiple layouts, social connectivity, and integrated chat.

  • WebRTC
  • Ant Media
  • Real-time systems
My contribution
  • Built a live video-streaming platform using WebRTC and Ant Media.
  • Scaled the platform from 1,000 to 100,000 concurrent streams.
  • Developed multi-layout, multi-format experiences with social platform connectivity and chat integrations.
Client engagement · Saranyu TechnologiesArchitecture & engineering
03illusto by VideoVerseCreative tools
illusto by VideoVerseProject sketch
PreviewYour story,
in the making.
Timeline00:0000:1500:30
VideoOpeningThe storyOutro
AudioSoundtrack
An editing room, right inside the browser.

The work behind the product

A video studio inside the browser.

Timeline-based video editing with improvements to platform scalability, stability, and transcoding.

  • Browser applications
  • Video processing
My contribution
  • Built an in-browser, timeline-based video editor.
  • Improved platform scalability, stability, and transcoding capabilities.
Client engagement · Saranyu TechnologiesArchitecture & engineering
04Etisalat UAEEnterprise platforms
Etisalat UAEProject sketch
Content workspaceMulti-tenant
EditorReviewerAdmin

01Draft

Create content

02Review

Check & approve

03Publish

Ready to go

Role-based access, at each step.

A little more order behind the content.

The work behind the product

Content operations, across tenants.

A multi-tenant CMS with role-based access and an application for managing workflows.

  • React
  • RBAC
  • Multi-tenancy
My contribution
  • Built a multi-tenant content management system with React.
  • Implemented role-based access control and a workflow management application.
Client engagement · Saranyu TechnologiesArchitecture & engineering
05ETV WinConnected TV
ETV WinProject sketch
ETV WinA front-row seat.
On your screen.
PlaybackDRMAds
Samsung TizenLG webOSRoku
Different screens. The same care for playback.

The work behind the product

One experience. Multiple screens.

TV applications across Samsung Tizen, LG webOS, and Roku, with playback, DRM, advertising, and custom layouts.

  • React
  • BrightScript
  • Tizen / webOS
My contribution
  • Built React-based Samsung Tizen and LG webOS TV applications.
  • Built a Roku application in BrightScript with video playback, DRM, advertising, and custom layouts.
Client engagement · Saranyu TechnologiesArchitecture & engineering
06BookMyShowMedia engineering
BookMyShowProject sketch
Adaptive playback
Auto quality

Protected across platforms

WidevinePlayReadyFairPlay

hls.js + dash.js · Adaptive bitrate

The best player gets out of the way.

The work behind the product

Playback built around the viewer.

A custom adaptive video player with multi-DRM support and optimized bitrate behavior for better playback latency.

  • hls.js
  • dash.js
  • Multi-DRM
My contribution
  • Built a custom adaptive player using hls.js and dash.js.
  • Integrated Widevine, PlayReady, and FairPlay DRM.
  • Optimized adaptive bitrate behavior to improve playback latency.
Client engagement · Saranyu TechnologiesArchitecture & engineering

02 / The person behind the systems

Hands on.
Systems minded.

I'm Subhra Kanti Das, a full-stack developer, software architect, and AI engineer based in Bengaluru. I design and build scalable digital products, bringing together intuitive interfaces, reliable backend services, and resilient cloud infrastructure.

With over eight years of experience across financial technology, OTT platforms, and real-time applications, I combine technical leadership with hands-on engineering. At Saranyu Technologies, I led a 10-person team while contributing directly to system architecture and development, including adaptive video players, analytics SDKs, RAG workflows, and MCP tools.

Connect on LinkedIn

03 / Expertise

From the big picture
to the last detail.

Architecture, applied AI, and full-stack delivery. Connected disciplines, with reliability and maintainability at the center.

01

Architecture that holds up.

Services, event flows, and infrastructure designed as one system. From a real-time API to the pipeline that gets it into production.

  • Microservices
  • Event-driven architecture
  • REST / GraphQL
  • WebSocket
  • Kafka / BullMQ
  • AWS
  • Docker / Kubernetes
  • Terraform / Jenkins
02

AI with the right context.

Grounded LLM responses through retrieval, and application capabilities exposed through MCP. Practical AI connected to real data and tools.

  • RAG
  • LangChain
  • Embeddings
  • Semantic retrieval
  • MCP servers & tools
  • Prompt engineering
  • AWS Bedrock
03

Engineering, end to end.

Python and Node.js services, thoughtful React interfaces, and tests that cover the journey. Built with maintainability in mind.

  • Python / Node.js
  • Django / FastAPI / Flask
  • React / Next.js
  • TypeScript
  • ClickHouse
  • Jest / Playwright
  • CI/CD

Inside the AI workflow

Better answers start
with better context.

A retrieval pipeline I work across, from source data to a grounded response.

  1. 01Ingest & chunk
  2. 02Embed & retrieve
  3. 03Assemble context
  4. 04Ground the response

04 / Let’s talk

Good things
start with
a conversation.

A system to architect, an AI idea to explore, or a team to build with. Tell me what you have in mind.

Or connect on LinkedIn

Bengaluru, India

Start a conversation01 / Hello

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