Available for freelance & contract work

I build the whole
AI product. Front to back.

I'm Karan — a senior AI full-stack developer with 8+ years shipping fast, scalable products. React on top, Python & Go underneath, and AI/LLMs woven through the middle. One engineer, the entire build.

65% faster APIs Scaled data 50× Mentored 10+ devs
ReactPythonGolangLangChainKubernetesPyTorchFastAPITypeScriptAWSRAGgRPCPostgreSQL ReactPythonGolangLangChainKubernetesPyTorchFastAPITypeScriptAWSRAGgRPCPostgreSQL
0
Years building
products
0
Faster API
responses
0
More data
scaled to
0
Performance
boost
0
Junior devs
mentored
01 Who I am

I'm the engineer founders call when they want the whole AI product built — not just a slice of it.

Over 8+ years across Canada and India, I've shipped full-stack products end to end. Right now I'm a senior developer at Labcorp, building AI-powered apps with React on the front, Python, Go and Java on the back, and ML/LLMs running through the middle.

I hold a Master's in Software Engineering from Concordia University, Montreal, Canada, and I care about the things that make software last: clean architecture, real performance, and shipping. I also document everything and mentor the team, so projects keep moving after I'm gone.

What that means for you: one person who takes an AI idea from a blank repo to a deployed, scalable product — without juggling five contractors.

KS

Karan Singla

Senior AI Full-Stack Developer
  • Senior Dev @ Labcorp (since Oct 2025)
  • 8+ years across Canada & India
  • M.Eng, Concordia University
  • Bangalore, India · works globally
02 What I can build for you

Services

Whether you need a whole product or one missing piece — here's where I help, and who each is for.

AI-Powered Full-Stack Apps

Complete web apps with AI built in — React/Angular front end, Python/Go back end, LLMs in the middle. Designed, built and deployed by one person.

For founders who want a whole product, not a piece

LLM & GenAI Integration

RAG pipelines, AI agents (LangChain & LangGraph) and GPT-powered features that actually ship and hold up in production.

For teams adding AI to an existing product

High-Performance Backend & APIs

REST & gRPC microservices with caching, async and clean architecture. On one team I cut API response times by 65%.

For products fighting slow, tangled backends

ML Models in Production

TensorFlow, PyTorch & Scikit-learn models wired into real apps — predictive analytics that lives in your product, not a notebook.

For data-rich businesses that want models live

Cloud, DevOps & CI/CD

AWS & GCP, Docker, Kubernetes and automated pipelines that make deploys boring — the good kind. Auto-scaling, observability and rollbacks included, so shipping stops being scary.

For teams that need reliable, repeatable shipping
03 How I work

Blank repo to shipped product

A clear, no-drama path — you always know what's happening and what's next.

01

Scope

We map the product and pinpoint where AI actually earns its place — no AI for AI's sake.

02

Build

Full-stack, end to end: the UI, the services, the models and the infrastructure around them.

03

Ship

Tested, documented and deployed with CI/CD. No loose ends, no "works on my machine".

04

Level up

I mentor your team and leave clean docs, so the product keeps moving without me.

04 Selected work

Proof, not promises

Two roles where I shipped real results — the problem, my approach, and the outcome.

AAVAA · Montreal, Canada

AI-Powered Full-Stack Platform

Senior Software Developer · 2023–2025
Challenge
Build full-stack apps with real-time AI decisioning and natural conversational experiences — fast, reliable, and production-grade.
Approach
Led design & development across React + Python/Go; built high-performance REST & gRPC microservices (RabbitMQ, caching, async); integrated ML (TensorFlow/PyTorch) and GenAI (LangChain, LangGraph, RAG, agents); deployed on AWS + Kubernetes with CI/CD.
Result
65% faster API responses and real-time AI features running in production.
65%
faster API responses
Full-stack
React · Python · Go
GenAI
RAG · Agents · LangGraph
Jify.co · Mumbai, India

Monolith → Microservices, at 50× Scale

Full Stack Developer · 2022–2023
Challenge
A large monolithic application couldn't keep up with growing data and traffic.
Approach
Refactored into modular microservices (Python, RabbitMQ) behind FastAPI + React/TS; applied TDD, optimized DB access (SQLAlchemy/Django ORM), automated CI/CD, and mentored 10+ junior devs.
Result
Scaled to handle 50× more data with an 85% performance improvement — faster, more reliable delivery.
50×
more data handled
85%
performance boost
10+
devs mentored
05 The toolkit

Full-stack, end to end

The technologies I reach for — from the pixel to the model to the cluster.

Frontend

ReactAngularTypeScriptJavaScriptHTML/CSSDjango

Backend

Python (Flask/FastAPI)GolangJava (Spring Boot)Node.jsgRPCMicroservices

AI / ML

OpenAI / GPTLangChainLangGraphRAGAI AgentsTensorFlowPyTorchScikit-learn

Cloud & DevOps

AWSGCPDockerKubernetesCI/CDJenkins

Data

PostgreSQLMongoDBSQL ServerRedisRabbitMQ
06 Why work with me

One engineer, the whole build

Full-stack ownership

Front end, back end, AI and infra — one person, fewer hand-offs, faster shipping.

AI + engineering depth

Not just prompts — ML models, RAG and agents, plus the systems to run them in production.

Built to scale

50× more data, 65% faster APIs — I've solved the real performance problems, not the toy ones.

Lifts the whole team

I mentor (10+ devs and counting) and document everything — I leave your codebase better than I found it.

Let's build your
whole AI product.

Got an AI idea, or a product that needs an engineer who can do it all? Tell me about it — the first call is on me.