Vijay Gupta — Backend Engineer

About

Software Engineer with 3+ years designing scalable backend systems at production scale. Currently at Juspay building NammaYatri — India's largest open-source mobility platform serving 200K+ rides/day and processing 5M+ daily transactions. I own core backend systems where every millisecond and every dollar of infra cost is a design decision.

My work spans the full backend depth: Redis/Valkey KV infrastructure at 5K+ events/sec, multi-cloud routing with zero-downtime deployments, autonomous SRE agents, and CPU profiling in Haskell. I care about systems that are observable, cost-efficient, and stay up at 99.9% availability when traffic spikes unexpectedly.

45% P95 latency cut · $126K annual savings · 99.9% availability · 5M+ daily transactions

Stack

// Languages
import { Haskell, Python, C++, JavaScript, TypeScript, SQL, Java } from "languages"

// Data & Messaging
import { Redis, Valkey, Kafka, RabbitMQ, PostgreSQL, ClickHouse } from "data-layer"

// Backend
import { Node.js, Express, REST_APIs, Microservices } from "backend"

// Cloud & DevOps
import { AWS, Kubernetes, Docker, Lambda, CI_CD, Autoscaling } from "infrastructure"

// Observability
import { Grafana, Prometheus, VictoriaMetrics, CloudWatch } from "monitoring"

// Engineering focus
const focus = [
  "System Design",
  "Distributed Systems",
  "Performance Tuning",
  "SRE & Observability",
]

Work

May 2023 — Present

Juspay — NammaYatri

Software Development Engineer

Architecture & Scale
Designed end-to-end flow for multimodal transport — real-time GPS tracking across 3 cities with 10K+ DAU.
Architected Redis/Valkey KV infra to 5M+ daily transactions and 5K+ events/sec via autoscaling & table-level sharding.
Implemented multi-cloud routing with cloud-aware Redis/Kafka connections, enabling zero-downtime cross-cloud deployments.
Designed and owned core backend systems for a platform serving 200K+ rides/day.
Cost & Reliability
Drove $126K annual savings and 20% AWS cost reduction through EC2 right-sizing, AZ-aware routing, and storage efficiency.
Executed zero-downtime Redis→Valkey migration with zstd compression — memory ↓50%, costs ↓40%.
Owned production reliability and on-call — 75% reduction in 5xx errors, maintained 99.9% availability.
Performance & AI
Improved P95 API latency by 45% by profiling critical paths, optimizing I/O and caching layers.
Built high-performance in-memory GTFS service with GraphQL preloading — hot-path latency ↓60% at 5K+ req/sec.
Built Vishwakarma — autonomous SRE agent running 16 parallel investigations, cutting investigation time by 70%.
Mentored 3+ engineers, led design reviews and interview loops — 40% team growth.

HaskellPythonRedis (Valkey)KafkaPostgreSQLAWSKubernetesGrafanaPrometheus

Jun 2022 — Apr 2023

Vahan

Software Development Engineer I

Redesigned microservice architecture for AI-driven WhatsApp Bot supporting 100K+ job seekers — 45% faster responses, 35% higher engagement.
Implemented concurrent chat processing with RabbitMQ — telecalling costs ↓32%, handled 10K+ conversations.
Automated application status tracking via data warehouse integration — manual monitoring effort ↓70%.

Node.jsReact.jsPostgreSQLRedisRabbitMQ

Builds

Vishwakarma

Autonomous SRE agent that ingests alerts from AlertManager & CloudWatch, runs 16 parallel investigations across Prometheus, Kubernetes, Elasticsearch, and databases, delivers PDF RCA reports to Slack — cutting investigation time by 70%.

PythonFastAPILLMKubernetesPrometheus

Multi-Cloud DB Manager

Unified multi-cloud database management platform to query PostgreSQL and Redis across AWS, GCP, and Azure simultaneously — parallel query execution, side-by-side comparison, 3-tier RBAC, Monaco SQL editor, and password-protected destructive operations.

TypeScriptPostgreSQLRedis

NodeSage

CLI tool for codebase understanding using local LLMs with RAG architecture — ask questions about any repo.

Node.jsOllamaRAG

k8s-dashboard

Kubernetes cluster monitoring dashboard with real-time metrics, pod health visualization, and resource utilization charts.

FastAPIReactKubernetes

Location Tracking Healthcheck

@ Juspay

Real-time healthcheck pipeline using Kafka location streams to detect stalled drivers, with FCM-based alerting when location updates stop — improving GPS accuracy and reliability for 200K+ rides/day.

HaskellKafkaRedis

Master Oogway

Post-release observability platform with LLM-powered RCA. Reduced MTTR by 50% and incident detection time by 70%.

PythonFastAPIPrometheusKubernetesAI

Bus Route Tracker

Open-source platform to collect, confirm, and manage bus stop & route data with real-time GPS tracking and RESTful admin APIs.

PythonRedisClickhouseKotlin

WriteMyText

Convert typed text into handwritten-style images using Canvas API with custom font rendering and styling options.

JavaScriptCanvas API

Education

Degrees

B.Tech, Information Technology

Kamla Nehru Institute of Technology, Sultanpur

2018 – 20228.5 CGPA

Higher Secondary (PCM)

St. Handel Public School, Allahabad

2015 – 2017

Certifications

Recommendations

"Vijay was a fantastic person to work with — multi-skilled, insightful, and a person with very strong problem-solving skills. His focus keeps everything moving smoothly, deadlines are met, and whatever project he is working on meets the highest standards. An asset to any company."

Naman Samaiya SDE3 @ Vahan · IIIT Bhagalpur

"Vijay impressed me with his positive attitude and strong work ethic. Always eager to learn, great initiative on challenging projects. His technical skills are equally impressive — it was clear from the beginning that he has a great deal of potential."

Ketan Patil Engineering Manager @ Vahan

"Vijay's technical knowledge, attention to detail, and problem-solving skills are unmatched. He was always a key contributor to our team's projects. I highly recommend Vijay for any opportunity he pursues."

Aditya Kale SSE @ Vahan · IIIT Pune

Contact

location Bangalore, India

email vijayrauniyar1818@gmail.com