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About

I'm Lakshay Sangwan, a Product Engineer at Digiicampus based in Hisar, India. I've spent the last ~5 years building multi-tenant platform infrastructure (Java, Spring Boot, AWS, MySQL, Redis, and the usual supporting cast) with enough end-to-end ownership that the work spans infrastructure, architecture, security, and feature development.

Outside of work I build small things. A privacy-first PDF toolkit, a habit tracker on Cloudflare's edge stack, a Lambda that emails me when Barcelona match replays show up. Tools that scratch a specific itch and then mostly stay running because they're simple enough not to break.

Experience

Digiicampus Nov 2023 to Present · Remote (Bengaluru)

Product Engineer 2

  • Built and own a faculty-recruitment platform end to end: a new Java 25 / Spring Boot 4 microservice with a public candidate portal, panel scoring, offers and HRMS handoff, shipped to QA in ~4 weeks.
  • Built a staff-appraisal engine inside the multi-tenant monolith: rule-based rosters, multi-reviewer scoring, and pluggable KPIs computed from attendance, leave, gradebook and exam data.
  • Architected a federation hub for cross-tenant account linking using union-find transitive closure and HMAC-signed JWTs.
  • Designed a selfie-based attendance system with server-side geofencing and multi-layer timezone resolution.
  • Implemented FF1 format-preserving encryption for platform-wide ID obfuscation with zero schema changes.
  • Led AWS infrastructure optimization: audited 15+ ElastiCache clusters, upgraded Redis 6.2.6 → 7.1.0, right-sized instances, and cleaned up CloudFront distributions, for $3,400+/year in savings.
  • Owned the Staff Attendance module end-to-end, replacing day-old Athena batch reports with real-time ElasticSearch sync.
  • Built reusable platform components adopted org-wide: global exception-handling advices, test frameworks for services and MySQL stored procedures, and centralized obfuscation utilities.
  • Shipped a Digital Student Passport with QR verification and a Support Help Centre with FAQ search.
AuthBridge June 2021 to Nov 2023 · Gurgaon

Software Engineer

  • Built core verification microservices for PAN and Aadhaar checks, critical dependencies for the company's flagship background verification product, processing high-volume identity checks.
  • Designed an automated data inflow system for the operations team that cut developer intervention to zero, increased web scraping throughput 5×, and moved compute requirements from enterprise servers down to consumer-grade hardware.
  • Built internal tools for data extraction, validation pipelines, and batch processing workflows.

Education

B.Tech, Computer Science Engineering
UIET, Kurukshetra University · May 2021

Skills

Languages
Java (8 to 25), JavaScript, TypeScript, SQL, HTML/CSS
Backend
Spring Boot (up to 4.x), Hibernate (JPA), REST APIs, microservices, Thymeleaf
Frontend
React, Vite, Ant Design, AngularJS
Databases
MySQL, PostgreSQL, Redis / ElastiCache, ElasticSearch
Cloud & infra
AWS (EC2, ECS, Lambda, ElastiCache, CloudFront, ALB, SQS, Athena), Cloudflare (Workers, Pages, D1)
Testing & CI
Playwright, GitHub Actions
Tools
Git, Linux, Bash

Contact