Projects

Selected work.

Case studies from production. Approach and solution details on call - what's here is the problem and the verified outcomes.

case-01.md FinTech

High-Frequency Trading Engine

Cut a Tier-1 trading engine's p99 from ~6s to ~1.8s - no full rewrite, audit trail intact, ~40% lower infra cost.

Legacy 10-yr monolith at p99 ~6s. Sub-2s commitment to the board next quarter. 12 engineers, no full rewrite budget. SEBI audit trail non-negotiable.

P99 Latency

~6s → ~1.8s

board commitment met

Infra Cost

~40% lower

same workload

Audit Loss

intermittent → zero

Java/Kotlin Kafka Redis Kubernetes AWS

case-02.md InsurTech

Claims Platform Modernisation

Took a 12-year insurer off an ESB monolith - ~40% lower cloud bill ($20k→$12k/mo), 100% audit-trail completeness.

$20,000/month AWS bill on a flat workload - rising while usage didn't. Adjuster turnaround slipping. Regulator demanding audit-trail upgrade. ESB vendor lock-in.

Cloud Cost

$20k→$12k/mo

~40% saved

Audit Trail

100%

partial → complete

Claims Speed

↑ materially

after ESB removal

Java Spring Boot RabbitMQ PostgreSQL AWS EKS

case-03.md AI / Internal

51-Agent AI Orchestration System

Designed and operate a 51-agent orchestration system end-to-end. Not a demo - runs daily.

Most agent systems fail because they're designed like chatbots. Clear orchestrator → lead → specialist routing, failure modes, and observability were absent from every existing reference architecture.

Agents

orchestrator + leads + specialists

Uptime

Daily ops

not a demo, in active use

Architecture

3-tier

orchestrator → leads → specialists

LLM APIs LangChain Langfuse Python Node.js

case-04.md FinTech

MintGenie - Investment Platform

All-in-one finance/investment app. High-frequency transaction engine with 2-second latency target.

Series-A fintech needing a production-grade transaction engine and a team of 28 shipped to deadline against regulatory requirements.

Latency

transaction engine target met

Team

cross-functional

Infra

EKS

AWS CI/CD, CDN

Java 11 Spring Cloud Kafka MongoDB Redis K8s

case-05.md IoT

Ensurity - IoT Device Platform

Scaled a production IoT platform from 2,500 to 50,000+ concurrent devices - a 20x jump - via system and database redesign.

Platform hitting a hard ceiling at 2,500 concurrent devices while the fleet kept growing. The real-time telemetry pipeline had to survive the jump, not just the connection count.

Devices

2.5k → 50k+

20x concurrent scale

Telemetry

Real-time

pipeline redesigned

Team

lead architect

Java Node.js React IoTDB Kafka AWS K8s

case-06.md FinTech

Ila Bank - Core Modernisation

Migrated 25 microservices of a live digital bank to Java 17 and built the Spring Cloud gateway - inside a 100-person programme.

Legacy services aging out of support across a live retail bank. The migration had to land with zero downtime while feature delivery continued in parallel.

Services

migrated to Java 17

Gateway

Built new

request aggregation

Programme

100 eng

backend lead

Java 17 Spring Cloud Gateway React PostgreSQL AWS EKS

case-07.md AI / Voice

Neobrain - AI Voice Agent

Autonomous AI telecalling agent with a real-time voice pipeline at 300-450ms latency - model-agnostic by design.

Outbound lead-gen needed a voice agent that holds a natural phone conversation over Twilio. Latency above half a second breaks the illusion and the call.

Voice Latency

300-450ms

TTS/STT round trip

Models

Agnostic

OpenAI / Polly / Sarvam

Team

architect + engineer

Python Java Rust React Twilio AWS

case-08.md GovTech

Lek Ladki Yojana - GovTech Platform

Welfare-scheme platform tuned for 200,000+ applications a day at peak - citizen registration through benefit disbursement.

State welfare scheme with Aadhaar-authenticated registration and peak-day surges a default Spring Boot deployment could not absorb.

Peak Load

200k+/day

applications sustained

Identity

UIDAI

Aadhaar-authenticated

Team

lead architect

Java Spring Boot AWS

More engagements.

Delivery work without a single headline number - listed for completeness, not sold as case studies. Details on call.

Pow.re

FinTech / Crypto · Lead Architect · team 9

Greenfield Bitcoin mining-pool payout-transparency analytics. Next.js, NestJS, FastAPI, Kafka monorepo on EKS.

Tarabut

Open Banking · Backend Lead · team 12

Open-banking services on Spring Boot across AWS and Azure Kubernetes.

OldMutual

Enterprise · Architect · team 32

Azure data-integration platform. GraphQL, MongoDB, Angular.

OTT Play

Media · Technical Lead · team 20

Streaming platform delivery on AWS EKS. Next.js and Angular fronts.

1PAY

FinTech · Team Lead · team 10

Monolith to microservices: Spring Boot, Kafka, Redis.

DSG

FinTech · Architect · team 10

Blockchain-backed gold e-commerce platform on Azure.

Xunison

IoT · Frontend Lead

MQTT real-time streaming UIs running on constrained devices.

Prudent Experts

Insurance · Team Lead · 4 yrs

Monolith to microservices, +30% reliability. Innovation Leadership Award 2018.