Sourav Dey

/aboutMe

A glimpse into who I am, what I've built, and the journey so far.

I'm a 29-year-old Senior Software Engineer based in Bengaluru, India, originally from West Bengal.
With 7+ years of end-to-end ownership across high-traffic, scalable web and mobile products serving millions of users, I specialize in React.js, Next.js, and TypeScript. I have production experience integrating LLMs (GPT-4o, Claude) and agentic AI pipelines into customer-facing systems at scale. I thrive on leading 0-to-1 product initiatives, defining frontend architecture standards, and driving measurable business outcomes through technical leadership and cross-functional collaboration.
Join me on this exciting journey as we leverage technology to create remarkable.

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2021 - Present

HackerRank


Senior Software Engineer (Frontend) — Remote

At HackerRank, I serve as the frontend technical lead, driving technical direction across Product, Design, and Backend Engineering to define quarterly roadmaps, conduct system design reviews, and ship high-impact features end-to-end.

  • Monolith Re-platforming: Led a team of 4 engineers to architect the ground-up re-platforming of HackerRank's monolithic frontend into independent, scalable micro-applications — reducing build size by 35%, improving page performance by 28%, and laying the architectural foundation for agentic workflows.
  • Internal AI Agents: Built Support Ticket and Analytics AI agents using LLM pipelines, reducing support resolution time by 36% (36hrs → 23hrs) and saving 5% of frontend dev effort per initiative.
  • AI-Powered Assessment Generation: Architected a pipeline (GPT-4o) that converts job descriptions to complete assessments in 7 seconds (down from 3 days), improving hiring team efficiency by 73% and enabling 10x throughput for enterprise customers.
  • Test Creation & Editing Platform: Led 0-to-1 design and development (React.js, TypeScript), now powering 1.9M+ tests globally — reduced median time-to-publish by 61.7%, cut user drop-off by 17%, improved operational efficiency by 42.4%, and reduced page load time by 1.6x.
  • Certified Assessments: Conceived and launched from scratch — drove 52% adoption increase and standardized 7% of all platform assessments globally.
  • Leaked Question Detection: Designed an automated detection and auto-replacement system achieving 94% efficiency with a 52-minute average turnaround.
  • Performance-First Engineering: Established the vertical company-wide — defined Core Web Vitals standards, led architecture reviews, and elevated frontend performance culture across 3+ product lines.

Awards


  • SPOT Award x 2 (Test Creation Experience)
  • Kudos Award (Certified Assessments)
2018 - 2021

Tata Consultancy Services


Full-Stack Software Engineer (TCS Digital) — Bengaluru, India

At Tata Consultancy Services (TCS), I served as a Full-Stack Software Engineer, building 6+ B2B SaaS products from 0 to 1.

  • Led full-stack development of products including TCS Circle4Life (200K users) and TCS ClickFit (150K users), using React.js, Node.js, and GCP.
  • Engineered TCS ClickFit with AI-powered features: Cloud Vision-based food scanner, step tracking, and virtual tour on Google Cloud Platform, scaling from 0 to 200K internal users.
  • Built the frontend for TCS Digital Health Pass, a blockchain-based COVID-19 vaccination verification system deployed for UNAIDS and the International Red Cross Federation, using React Native.
  • Developed serverless backend for the SIFAS mobile app using Node.js, GCP Cloud Functions, and Firestore — delivered end-to-end in one week.
  • Developed customer-facing products for AIA Insurance Singapore — lead management iPad app (React Native) and a web portal (HTML/CSS/JS, Adobe Experience Manager).
  • Ranked in the top 1.5K of 60,000 TCS Digital Cadre employees; mentored 10 software developer interns as part of TCS CSR initiatives.

Awards


2016 - 2018

Freelance Software Developer & Designer


Consulted 150+ clients globally on web/mobile development and UI/UX design during my final years of college.

2014 - 2018

Education


B.Tech, Information Technology — MCKV Institute of Engineering (MAKAUT)
GPA: 8 | Graduated 2018

Started with an Android Development internship at Hewlett-Packard (HP), followed by a Software Engineering internship at Indian Oil Corporation Ltd. (IOCL). These experiences fueled my passion for building software and led me to freelancing and eventually full-time engineering.
Before 2014
My dad served in the Indian Air Force, and we traveled quite a bit during my early years. From Delhi to Rajasthan, and then to Kharagpur, I've experienced different places and cultures. Eventually, we settled down in Asansol, West Bengal, which has been home ever since.

It was during this time that I discovered my passion for coding, starting with languages like C, C++, and Basic SQL. This ignited my interest in pursuing computer science.
1996
Born 👶🏻 on 11th August, 1996