Portrait of Shivam Kumar
Open to backend & cloud roles · Delhi NCR, India

Backend systems that scale, built to include everyone.

Lead Full-Stack Developer

3.5+ years shipping production platforms — mostly backend (Node.js, MoleculerJS microservices, AWS), with regular frontend work in React rounding things out. I lead WCAG 2.2 accessibility efforts on PlayFactile across both.

ABOUT

What I actually do all day

I'm Lead Developer at Deligence Technologies, working on PlayFactile, a Jeopardy-style game platform. My work is backend-first — REST APIs with Node.js and MoleculerJS, AWS services (EC2, S3, SQS) — but I regularly build out the frontend too: admin panels for Feature Flags and Product Surveys, and React work across the product. I lead accessibility reviews across every new feature — semantic HTML, ARIA, keyboard navigation, checked before ship, not after.

Before that: two and a half years at AAA2 Innovate on Zipaworld.com, a logistics platform, where I led a React modernization that noticeably cut load times, owned the Warehouse module end-to-end, and wrote documentation that cut onboarding time by a third.

3.5+ yrs
in production
Faster
load times, React rewrite
WCAG 2.2
accessibility standard
EXPERIENCE

Where I've worked

Lead Developer

Aug 2025 — Present
Deligence Technologies · PlayFactile
  • Led WCAG 2.2 accessibility implementation and reviews across all new features.
  • Guided developers on semantic HTML, ARIA usage, and keyboard navigation.
  • Built and maintained REST APIs with Node.js and MoleculerJS.
  • Implemented Google OAuth 2.0 login; integrated Sentry on the backend for error monitoring.
  • Worked across React, MongoDB, Docker, and AWS (EC2, S3, SQS).
  • Built frontend admin panels for Feature Flags and automated Product Surveys — including rollout review across a ~1.9M user base and recipient/notification management for survey delivery.

Software Developer

Jan 2023 — Aug 2025
AAA2 Innovate, Noida · Zipaworld.com
  • Led migration from class-based to functional React components — a major performance gain.
  • Owned the Warehouse module across frontend, backend, and deployment.
  • Integrated ICICI Bank APIs and AI-based logistics platforms.
  • Built an automated shipment tracking system with automated email and recipient management, plus WhatsApp messaging via Sensy AI integration.
  • Authored Swagger/OpenAPI docs, cutting onboarding time by 30–40%.
  • Mentored junior developers through code review.

Software Intern

Jul 2022 — Jan 2023
AAA2 Innovate, Noida · Zipaworld.com
  • Optimized MongoDB queries and upgraded Node.js environments.
  • Authored Swagger/OpenAPI documentation for backend APIs.
SKILLS

Tools I reach for

backend
Node.js, Express.js, MoleculerJS, REST APIs
cloud & devops
AWS (EC2, S3, SQS, ECS, ECR), Docker, Redis
accessibility
WCAG 2.2, ARIA, keyboard navigation
frontend
React.js, JavaScript ES6+
databases
MongoDB, PostgreSQL
monitoring
Sentry
dev tools
Claude Code, Cursor, Git, GitHub Actions
integrations
Mailgun, Sensy AI (WhatsApp), ICICI Bank APIs
PROJECTS

Things I've built on the side

Node.js · AWS S3

Lognexus

A custom Node.js logging library with built-in AWS S3 integration, for centralizing application logs across services without bolting on a third-party SaaS.

Accessibility · ARIA

Accessible UI Components

A set of WCAG-compliant UI components built while leading accessibility on PlayFactile, tested for keyboard navigation and screen readers — the patterns I now bring into every product I work on.

CONTACT

Let's talk

Open to backend and cloud-focused roles. Based in Delhi NCR, India, happy to work with teams anywhere.