Backend & APIs
Node.js services and SpringBoot APIs built for throughput, clean data models and real-world traffic.
// Personnel File
The engineer behind the station.
A backend and cloud engineer who thinks in ecosystems — building systems that stay fast, correct and observable under real-world load.
I'm Prabhat Kumar, a Software Engineer with 4+ years across Infosys, DataNeuron and now Juspay — building backend services, cloud deployments and AI-powered workflow systems.
My toolkit runs on Node.js, Java, Python and GCP — Kubernetes, Pub/Sub, Cloud SQL, the pieces that keep products fast and reliable under real traffic. Lately that means payment-switch and FASTag infrastructure processing continuous toll traffic.
When I'm not shipping, I'm tending competitive programming (800+ problems and counting), machine-learning experiments, and a growing collection of side projects.
Growth Index
The Trellis
What I grow well.
A living skillset — always branching, never finished.
Cloud & GCP
App Engine, Compute Engine, GKE, Cloud SQL and Pub/Sub — cloud-native by default.
Data Stores
PostgreSQL and Firestore, SQL and NoSQL modelling for dynamic product and user data.
DevOps & Reliability
Docker, Kubernetes and Jenkins pipelines, with Stackdriver monitoring that keeps downtime low.
AI & Workflows
LLM-powered workflow engines and fine-tuning pipelines — automation that scales with the data.
Foundations
C/C++ and Java at the roots, Python and JavaScript everywhere above — fundamentals first.
Flight Log
Where I've grown.
Roles that shaped how I build — from enterprise delivery to payment infrastructure.
2025 – Present
Current
Juspay — Software Engineer
Payments infrastructure — building high-throughput payment-switch and NETC FASTag issuance services in Rust and Haskell on Kubernetes: request routing, secure payload handling and observability for a system that never stops moving money.
May 2024 – 2025
Noida
DataNeuron — SDE 1, Core Product
Built LLM Studio — 8 specialized AI workflows in Node.js on GCP — and led the cloud upgrade of ALP and fine-tuning workflows on App Engine and Compute Engine, with Pub/Sub for real-time processing and Stackdriver monitoring that cut downtime significantly.
Jul 2022 – Feb 2024
Pune
Infosys — Software Engineer
Engineered a real-time collaborative document tool for Boeing — version control, reconciliation, multi-user editing — on GKE and Cloud SQL, and shipped features for the Apple Payments dashboard on Cloud Functions and Firestore. Automated delivery with Docker and Jenkins.
Roots & Records
The ground under the work.
Where I studied — and what the effort earned.
Education
Commendations
Open Channel
Let's collaborate.
Open to roles, projects and good conversations about engineering.