Headline

Lead Software Engineer at LUMO | Backend: Java, Spring Boot, TypeScript, PostgreSQL | 4 yrs on Walmart microservices | LLM features & AI-assisted engineering

About

Backend software engineer with 4 years of experience. For four years I worked on Walmart systems through Litmus7 and Cognizant. I built Java and Spring Boot microservices for Sam's Club Mexico cart and checkout, inventory sync (Zip Service), and promise & sourcing, and I handled their on-call production support. The work included Java 21 migrations, a bulk-update API for the operations portal, contract testing in CI, moving logs from Splunk to OpenObserve, and migrating secrets to Akeyless. Today I'm Lead Software Engineer at LUMO, a five-person AI startup. We're building EVNTS, an event and ticketing platform for iOS, Android and the web. I work across the TypeScript/Fastify API, PostgreSQL, authentication, GCP infrastructure, CI, and the LLM assistant. We develop with Claude Code agents: I write and review the specs, and every change has to pass contract, test and device checks. What I care about: backend systems that are correct under concurrency, easy to operate in production, and honest about their failure modes. Stack: Java, Spring Boot, TypeScript, Node.js, PostgreSQL, MySQL, Cassandra, Redis, GCP, Docker, GitHub Actions, Grafana, Splunk.

Location

Kottayam

AI stack

anthropic apis

claude code

claude

Work experience

Lead Software Engineer at LUMO, Nov 2026 - Present · 1 mo, Dubai, United Arab Emirates, EVNTS: an event and ticketing platform (iOS, Android, web) built by a five-person team. • Backend features in TypeScript on Fastify and PostgreSQL: ticket issuing and transfer, door check-in with walk-up guests, guest import into tiered tickets and invitations, ticket emails with calendar invites. • Email one-time-code sign-in alongside Apple and Google. Browser sessions on HttpOnly refresh-token cookies. • Production on GCP: Cloud KMS keys, scheduled backups, staging promoted by image digest. CI gates with contract checks, Playwright end-to-end and accessibility tests, and secret scans. • Web side of a streaming LLM assistant that drafts an event from one sentence. • Develop with Claude Code agents: I write and review the specs; every change passes contract, test and device checks.

Online Tutor at Fiverr, Jun 2020 - Present · 6 yrs 6 mos

Associate Project at Cognizant, Apr 2025 - Oct 2026 · 1 yr 7 mos, Bengaluru, Karnataka, India, Client: Walmart. Promise & Sourcing and MCSE Orchestrator: Java/Spring Boot microservices. • Migrated services to Java 21 and upgraded their dependencies. • Added a Spring Boot bulk-update API to the operations portal for uploading inventory and order changes. • Moved logs and alerts from Splunk to OpenObserve, extended Grafana dashboards, and migrated secrets to Akeyless. • Added contract tests to CI, wrote JUnit 5 suites, and fixed SonarQube security and reliability findings. • On-call production support, including batch and data-ingestion jobs during peak retail periods.

Java Developer - ATG and Micro Services at Litmus7, Jun 2023 - Mar 2025 · 1 yr 10 mos, Bengaluru, Karnataka, India, Client: Walmart. • Sam's Club Mexico Cart & Checkout (Oracle ATG, Java): built mixed-cart and express-delivery features and their REST endpoints. Built Karate API test suites. On-call defect fixing. • Zip Service Mexico (Spring Boot): implemented APIs that synchronize stock levels and delivery options between stores and central inventory. Added structured logging and Splunk dashboards.

Associate Engineer at Litmus7, Oct 2022 - Jun 2023 · 9 mos, Kochi, Kerala, India, Client: Walmart. Onboarded to Sam's Club Mexico cart and checkout (Oracle ATG, Java), fixing defects and building API tests. Promoted to Java Developer in June 2023.

Education

Bachelor of Technology - BTech, Computer Science, College of Engineering, Cherthala

Warwin Senior Secondary school Vaikom