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Subhadeep Datta

Behind the code

I'm a Full Stack Engineer and CTO who loves solving hard scaling problems. Currently, I'm the Co-Founder & CTO at Hirerkey, building an AI-native HR platform in Dubai, and the Consulting CTO at Noisiv Consulting, where I design backend systems that handle millions of daily API requests. Before this, I led the technical team at Qid, scaling India's top digital ID gateway to handle massive daily traffic spikes. I write code primarily in Java, Node.js, and Python, and I rely heavily on Kafka, Redis, and MongoDB to keep systems fast and reliable.

Experience

January 2025 - Present

Co-Founder & CTO

Hirerkey

Leading technical strategy and product engineering. Architected the main platform with Java, Node.js, MongoDB, and Kafka. Integrated LLMs and RAG models to automate HR processes, directly contributing to our $2.5M valuation.

June 2023 - Present

Consulting CTO

Noisiv Consulting

Designing systems that handle millions of daily API requests. Reduced database response times by 60% through schema optimization and implemented Kafka/Redis queues processing 75,000+ messages per second.

September 2021 - November 2024

Technology Lead

Qid

Managed a team of 5 engineers to build a digital check-in platform. Integrated with India Stack APIs for identity verification and set up Redis caching layers that reduced our database load by 40%.

2020 - 2021

Software Engineer

Videtorrium

Built core product features using React and Node.js. Mentored junior developers and helped establish our early engineering practices.

Tech stack

⚙️

Backend & Systems

Java
Python
Node.js
Golang
Express.js
Spring Boot
NestJS

🎨

Frontend & UI

JavaScript/TypeScript
React.js
Angular.js
Next.js
Flutter

☁️

Cloud & DevOps

AWS
Docker
Kubernetes
CI/CD
Microservices
Terraform
Jenkins

🗄️

Databases & Data

MongoDB
Redis
Kafka
MySQL
PostgreSQL

🤖

AI & ML

Custom Models
RAG Models
Fine-tuning
LLMs
Vector Databases

🏗️

Architecture & Leadership

System Design
Distributed Systems
Enterprise Architecture
CTO Leadership
Team Management
Agile/Scrum
Technical Roadmapping

What I value

Performance

Every millisecond matters. I obsess over load times, bundle sizes, and runtime efficiency.

🧱

Clean architecture

Code should be simple to understand, easy to change, and hard to break. No clever hacks.

🚀

Shipping

The best code is code that's deployed. I bias toward action and iterating fast.

🤝

Team growth

Great products come from great teams. I invest in mentoring, code reviews, and culture.