Deveshwar Jaiswal

< Staff-Track Frontend · Platform Engineering · Varanasi, IN />

Building org-wide frontend systems that scale across teams. SDKs, Web Components, framework migrations — turning fragmented implementations into reusable platforms that move organizations forward.

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Deveshwar Jaiswal Memoji

The Stack &
The Systems

Frontend Architecture

System DesignPlatform EngineeringSDK DesignAPI ContractsMonoreposDesign SystemsMicrofrontendsWeb Components

Frameworks & Runtimes

AngularAstroReactNext.jsLit (Web Components)IonicElectronTauriDioxus

Performance & Web Vitals

Core Web VitalsLCP OptimizationLighthouseBundle AnalysisSEO ArchitectureCLS / FID

Build & Tooling

ViteBunFarmWebpackesbuildTurborepoRsbuildRspack

Languages

TypeScriptJavaScript (ES2024+)HTML5CSS3 / PostCSSNode.jsGolangRustWebAssembly

Leadership & DX

Technical MentorshipArchitectural ReviewsDeveloper ExperienceCross-team AlignmentRFC Writing

Where I've
Created Impact

Nov 2021 — Present · 4+ Years

Senior Software Engineer

PhysicsWallah (PW) — India's fastest growing EdTech unicorn

  • Designed and owned an org-wide Authentication SDK used across multiple customer-facing products and internal tools — standardizing auth flows and reducing duplicated logic across the org.
  • Led POC and rollout of Lit-based Web Components as shared UI primitives across Angular, React, Astro, and internal tooling ecosystems.
  • Drove Angular → React and Next.js → Astro framework migrations for revenue-critical platforms, improving SEO, performance, and DX.
  • Architectural and performance optimizations delivering massive Lighthouse gains:
    📈 Mobile Score: 44 → 88 ⚡ LCP: 22.9s → 2.7s
  • Defined frontend performance standards, tooling conventions, and maintainability guidelines adopted across teams.
  • Mentored and guided 15+ engineers over 4 years , influencing architecture and technical decisions beyond direct ownership.
  • Championed modern build tooling (Vite, Bun, Farm) — reducing CI build times and improving developer feedback loops.
  • More on LinkedIn — let's connect to chat about the details!

Apr 2021 — Nov 2021 · 8 Months

Frontend Lead

PenPencil Company — New Delhi

  • Owned frontend delivery across web, mobile, and desktop applications using Angular and Ionic.
  • Trained interns and new joiners, establishing team conventions and code quality standards.
  • Led technical scrums, UX flows, and coordinated across engineering and product.

Jan 2019 — Mar 2021 · 2+ Years

Software Engineer (Frontend)

PenPencil Company — New Delhi

  • Built and maintained cross-platform applications using Angular 8–9, Ionic 4, and TypeScript.
  • Implemented payment gateway integrations, API systems, and responsive cross-platform UI.
  • Managed async flows, performance optimizations, and supported a team of junior devs and testers.

Zero to Grind

Level Up Your
DSA & System Design

An isekai-themed learning platform where you go from F rank to SSS+. Structured paths, XP system, real FAANG-level content — no fluff.

ZERO TO GRIND

grind.beyondcodekarma.in

  • 21 DSA topics — Arrays to DP, Graphs to Bit Manipulation
  • 18 System Design — Kafka to Consistent Hashing to Payment Infrastructure
  • Core Arch & AI — MVCC, Raft consensus, LLMs, RAG pipelines
  • XP & Rank system — Progress tracked locally, no account needed
Enter the Dungeon → Start DSA Path

YouTube
Channel

Beyond Code & Karma

@beyondcodekarmadeva


Where frontend engineering meets ancient wisdom. I explore system design, modern frameworks, Hindu mythology, karma philosophy, and the deeper patterns connecting technology and consciousness.

System Design Frontend Architecture Frameworks & Tools Hindu Mythology Karma & Philosophy Coding Deep Dives

Code & Karma

Deep
Dives

Technical concepts explained through philosophy, karma, and interactive code. Every topic is a journey — not just a tutorial.

JavaScript Intermediate

The JavaScript Event Loop

The invisible engine running your JavaScript — microtasks, macrotasks, async/await, and the Vedic philosophy behind it all.

Read Deep Dive → ⚡ Visualizer
DSA Beginner

Karma with DSA

Data structures and algorithms explained through karma, dharma, and Hindu philosophy. Arrays, linked lists, trees, graphs, recursion, and DP.

Read Deep Dive → ⚡ Visualizer
JavaScript Intermediate

Browser Rendering Pipeline

How Vishwakarma builds the visible world — parse, CSSOM, layout, paint, composite. Understand reflow, repaint, and composite-only paths with interactive visualizations.

Read Deep Dive → ⚡ Visualizer
JavaScript Intermediate

JS Memory Model & Garbage Collection

How V8 allocates heap and stack memory — and how Shiva's GC reclaims what is no longer needed.

Read Deep Dive → ⚡ Visualizer
View All Topics 4 topics · more coming

Fresh Off the Press

Latest from the Blog

mythology

Technical Debt is Karma — And the Gita Explains Exactly How to Pay It Back

Every shortcut has consequences that compound. The Bhagavad Gita's theory of karma is not a metaphor for technical debt — it is the most precise description of it I've found anywhere.

23 Apr 2026 tech

React TypeScript Architecture Patterns I Use on Every Production Project

The patterns I reach for when building React apps that need to last longer than six months — custom hook contracts, state colocation, strict boundary typing, and the folder structure that doesn't collapse.

22 Apr 2026 tech

What I Check First in a Frontend Performance Audit

The exact order I work through when auditing a slow frontend — from TTFB to third-party scripts. No padding, just the sequence.

21 Apr 2026
View all posts →

Hogwarts Board Room

Wizard's
Chess

🦁 Gryffindor vs 🐍 Slytherin

Wizard's Chess

Play Harry Potter-inspired chess against a minimax AI. Choose your house, set the difficulty, and battle on the Hogwarts board. The pieces speak — will you dare challenge the Dark Arts?

  • Harry Potter theme with Gryffindor vs Slytherin
  • Minimax AI with alpha-beta pruning
  • 3 difficulty levels — Squib, Wizard, Dark Lord
  • Full legal chess rules — en passant, castling, promotion
♟ Challenge the AI

Born in
Kashi's Fire

I'm a Senior Software Engineer operating at Staff-level scope, focused on frontend systems that scale across organizations. From Varanasi — the world's oldest living city — I carry an engineer's precision with a philosopher's patience.

At PhysicsWallah, I design and own shared frontend platforms: an in-house Auth SDK across multiple products, Lit-based Web Components spanning Angular, React, Astro, and vanilla environments, and architectural migrations that deliver real business impact.

"I don't just build UIs — I build the systems that teams build UIs with."

Beyond code: I run a YouTube channel, collect anime figurines, explore mythology, chant mantras, and believe deeply in the karma of clean, thoughtful engineering.

Kashi-Born Engineer

Raised in Varanasi, the city of moksha and eternal fire. That timeless quality — building things meant to last — shapes how I approach frontend systems.

Gaming
Swimming
Drawing
Food Hunt
Temples
Astrology
Numerology
Gadgets
Anime
Mythology
Mantras
Figurines

Let's Build
Something Great

Open to Global Remote Consultancy

Currently targeting Staff / Principal Frontend Engineer roles where frontend systems, platform thinking, and cross-team impact matter.

Open to remote and global opportunities. If you're building something where frontend is treated as a systems discipline — let's talk.

dev@beyondcodekarma.in linkedin.com/in/deveshwar-jaiswal-frontendninja github.com/svssdeva gitlab.com/deveshwar.jaiswal Instagram: @deva.code.karma

Common Questions

Quick Answers

What is Beyond Code Karma?

Beyond Code Karma is the personal site of Deveshwar Jaiswal — a Frontend Architect with 7+ years building production systems at scale. It features technical deep dives on frontend architecture and browser internals, interactive visualizers, engineering blogs, and reflections where ancient philosophy meets modern software.

What kind of content can I find here?

You'll find in-depth articles on topics like the JavaScript event loop, browser rendering pipeline, and data structures — each paired with interactive visualizers. There's also a blog covering tech, gaming, mythology, and life, plus a gaming section for the svssdeva persona.

Who is Deveshwar Jaiswal?

Deveshwar Jaiswal is a Frontend Architect with 7+ years of experience building org-wide frontend systems, SDKs, and Web Components at scale. Based in Varanasi, India, he specialises in frontend architecture, performance optimization, and Core Web Vitals. Available for freelance projects at https://beyondcodekarma.in/hire/.

Where can I follow your work?

You can follow on YouTube (@beyondcodekarmadeva) for frontend engineering and philosophy content, Instagram (@deva.code.karma) for behind-the-scenes updates, and GitHub (svssdeva) for open-source projects.

Does Deveshwar Jaiswal take freelance projects?

Yes. Deveshwar is available for freelance web development, frontend architecture consulting, and performance audits. He works with startups, businesses, and agencies globally. Visit https://beyondcodekarma.in/services/ for details or https://beyondcodekarma.in/hire/ to get in touch.

How can I hire a frontend engineer from Beyond Code Karma?

Visit https://beyondcodekarma.in/hire/ to reach out directly. Deveshwar offers custom website builds starting at ₹15,000, web app development from ₹50,000, and performance audits from ₹10,000. Response within 24 hours on business days.

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add karma, light a diya.

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