Senior technical lead · Chennai, India
Cloud-native systems, and the web, mobile and desktop products built on top of them. Fourteen years shipping to production — including a platform now live in over 500 cities, with a ten-engineer team reporting to me.
01
I design and build the distributed systems underneath products that have to stay up: service architecture, the AWS and Kubernetes infrastructure it runs on, and the web, mobile and desktop clients on top. Most of my work is the part teams underestimate — making a system that survives its own growth, and leaving it operable by the people who stay. Fourteen years in, most of them leading the team doing the work.
For the last five years I have been senior technical lead on Kubapay, a multi-tenant transit ticketing SaaS live in over 500 cities across France, Italy, South Africa and beyond. I lead a ten-engineer team out of India and work closely day to day with the product and engineering side of the team in Denmark. I am also senior technical lead on Robogebra, a smart classroom platform for maths teachers, where I own the release cycle across web and mobile. Alongside them I have delivered in legal tech, financial compliance (FATCA/CRS), industrial credentialing, logistics and edtech, and shipped AI systems of my own — MemoMind, a retrieval engine that answers from your own documents with a citation behind every claim, and UmarTransit-1B, a transit-domain language model published on Hugging Face.
Four kinds of problem account for most of the work clients bring me. Cloud-native architecture — Java, Kotlin and Spring Boot microservices designed for scale and failure, deployed on AWS with Docker, Kubernetes and CI/CD that people other than me can operate. That includes multi-tenant platforms, where one system serves operators who each need it to behave as if it were built for them alone. The clients on top: Angular and React on the web, Ionic and React Native on mobile, Electron on the desktop — one product across every screen, including the awkward parts like native integrations, store releases, and billing that reconciles across web, App Store and Play. Modernization: AngularJS to Angular, old Java to current, monolith to Spring Boot microservices, done while the product stays live and paying customers keep using it. And AI features that have to be right — retrieval grounded in your own documents with a citation behind every answer, and a fine-tuned model of your own when a general one is not accurate enough for your domain.
Cities At Scale Kubapay, the multi-tenant platform I lead delivery on
Products Delivered Across fourteen years and a dozen industries
Engineers Led Team I run day to day
Years Experience Shipping production software
02
Five ways to engage me. Each one is scoped work with a named outcome, not an open-ended pair of hands.
01
Your platform gets a service architecture that scales with load instead of against it, deployed on AWS with Docker, Kubernetes and CI/CD your own team can operate after I leave. Includes the multi-tenant work where one platform has to serve operators who each need it to behave as if it were built for them alone.
Java, Kotlin, Spring Boot, Node.js. AWS, Kubernetes, Docker, GitHub Actions.
02
One product on web, iOS, Android and desktop from a shared codebase, so a change ships everywhere instead of three times. Either I build it, or I take over an Angular application that has stalled: slow, flaky, hard to change, or left without the people who wrote it.
Angular, React, TypeScript, Ionic, React Native, Electron. Razorpay, Apple in-app purchase, RevenueCat.
03
You get answers grounded in your own documents and data, with a citation behind every claim, rather than a chatbot that invents things. Where a general model is not accurate enough for your domain, I fine-tune one that is.
RAG, pgvector, OpenAI, Claude, MCP, QLoRA fine-tuning.
04
Your platform moves onto supported framework, Java and Spring Boot versions in stages, with the product live and customers using it the whole way through.
AngularJS to Angular, Java upgrades, Spring Boot migration, monolith to microservices.
05
Retained senior capacity for a team that has developers but no one to own architecture, review, estimates and delivery. A set number of days a month.
Architecture, code review, estimation, mentoring.
Describe the problem in a few lines and I will tell you whether I am the right person for it, and what I would do first.
Tell me about your project03
Grouped by the kind of problem they solve rather than by how well I think I know them. Java, Spring Boot and the cloud around them are where most of fourteen years has gone; system design that survives scale is what I usually get called in for.
04
Fourteen years designing and building scalable platforms across web, mobile and cloud. I work on distributed systems in Java, Kotlin, Spring Boot and Node.js — microservices architecture, cloud-native deployment on AWS, Kubernetes and Docker — with Angular and React on the front. I have led development teams, mentored engineers, and taken products from architecture and API design through to production. Highlights include five years as senior technical lead on Kubapay, a multi-tenant mobility platform serving riders and drivers across 500+ cities; Robogebra, a smart classroom platform for maths teachers; and Math Disk, shown at educational conferences.
Senior technical lead and full-stack engineer with 14+ years of hands-on experience building scalable software platforms across web, mobile and cloud environments. Microservices, distributed systems, and the AWS infrastructure they run on.
Bharath Niketan Engineering College, Theni, TN, India.
Bharath Niketan Engineering College (BNEC) is an ISO 9001:2015 Certified Engineering College, Affiliated to Anna University, Chennai and is Approved by AICTE. It was established in the year 1998.
St. Xaviers Polytechnic College, Tirunelveli, TN, India.
St. Xavier's Polytechnic College is located in Tamilnadu. The education institution was established in the year 1985. The College was affiliated to Directorate of Technical Education, Chennai. It is approved by AICTE (All India Council for Technical Education).
Provility Software Solutions, OMR, Perungudi, Chennai
ABI Software Solutions, Anna Nagar, Chennai
05
Fourteen years of shipped products: hybrid mobile apps, Electron desktop tools, multi-tenant web platforms and, most recently, AI systems of my own. Several shipped to web, iOS, Android and desktop from a single codebase. Showing AI and machine learning first — use the filters for everything else.
06
Need to get in touch with me! I'd love to hear from you.
Chennai, India
+91 96009 69829
umarfarookbtech@gmail.com
