Bengaluru, India

Laxmikant Swami · Senior Mobile Engineer

Performance underpressure. Agentsunder control.

I ship React Native systems that stay fast at scale — and the agent tooling that helps teams ship them faster.

View workDownload résumé

Impact at a glance

0.0M+

Daily active users served

0M+

MAU app (Zepto) worked on

0%

Faster screen loads

0.0%

Crash-free sessions

0

Years shipping production

About

Graphics performance engineer who also builds AI agents.

I build React Native products where frame time, memory, and crash-free sessions are product features — not afterthoughts. Most of my career has been spent making consumer apps feel instant on the devices people actually own.

At ZZAZZ I’m bootstrapping the mobile stack from zero: Nitro HybridViews for live Canvas feeds, on-device TTS with ExecuTorch, and an in-app ReAct assistant that can navigate screens and fill forms across three model providers.

Parallel to product work, I design agent systems — worktree-isolated runners, reviewer subagents, MCP servers, and AGENTS.md rule sets — so agent-written code stays conventional, reviewable, and shippable.

Currently

  • BuildingZZAZZ Exchange feed + agent task runner
  • ExploringContext engineering patterns for RN monorepos
  • ReadingSkia / SKSL performance notes & agent eval loops

Experience

Roles that shipped under pressure.

  1. ZZAZZ

    Jan 2026 – Present

    Senior Mobile Engineer

    Bootstrapping React Native for iOS & Android from zero

    • Bootstrapped the company’s React Native app for iOS and Android from zero.
    • Built the Exchange feed as native Kotlin + Swift list views on Nitro HybridViews — each row redraws its Canvas graphs and live metrics on its own cadence.
    • Wrote the team’s agent tooling: a worktree-isolated task runner whose reviewer subagent grades each run on diff, logs and screenshots, then emits the next-iteration prompt as a self-improving loop. Plus an MCP server for driving a live build.
    • Owned context engineering for the repo: an AGENTS.md rule set and reusable agent skills that keep agent-written code on convention.
    • Built an in-app AI assistant on a ReAct loop whose dynamic tool registry lets the model navigate screens and fill forms, streaming from three providers.
    • Added on-device text-to-speech with ExecuTorch for offline article read-aloud. Implemented CI/CD with GitLab pipelines, caching, dual release targets, and automated submission.

  2. Zepto

    Nov 2024 – Dec 2025

    Senior Mobile Engineer

    Consumer quick-commerce · 40M+ MAU

    • Led performance optimisation across the consumer app: 35% faster screen loads, 25% less memory, higher frame rates on low-end devices. 35% faster · 25% less memory
    • Built live order tracking with maps for single and batched orders — from partial coverage to 100% of orders trackable in real time. 100% trackable
    • Shipped gamification surfaces (scratch cards, floating elements) and monetisation modules — 20% lift in promotion-driven conversions.
    • Built an in-house notification SDK: +18% campaign CTR and removed the external vendor entirely. +18% CTR
    • Built an internal mock-management tool that decoupled feature work from backend readiness. Integrated image-classification pipelines for automated product validation.

  3. Stanverse Technologies

    Jan 2022 – Oct 2024

    Mobile Engineer

    Creator platform · 3.5M+ monthly users · team of 6

    • Built three real-time React Native games reaching 50K+ daily gameplays, plus an audio-room platform for 50K+ daily users on Agora + WebSocket.
    • Raised crash-free sessions from 94% to 99.3% with Crashlytics. 99.3% crash-free
    • Reworked login flows for a 40% lift in success rate; integrated UPI and card payments handling 5K+ daily transactions.
    • Flagship — Stan × Upstox, IPL 2022: single-handedly built and deployed the responsive IPL 2022 campaign site for Upstox, scaling to 500K+ daily active users. 500K+ DAU

  4. EWar Games

    Aug 2021 – Dec 2021

    Software Engineer

    Internal tooling

    • Built an admin panel with CRUD, filters, search, pagination and auth.
    • Established a role-based permission system across internal tooling.

Selected work

Case studies with teeth.

Six builds where performance, native graphics, or agent systems had to carry the product.

ZZAZZFeatured

ZZAZZ Exchange Feed

Live market rows need Canvas graphs and metrics that redraw on independent cadences without janking the list.

Approach · Native Kotlin + Swift list views on Nitro HybridViews; each row owns its own Canvas redraw loop.

Buttery feed scroll with per-row live graphics.

React NativeNitro ModulesKotlinSwiftCanvas
ZZAZZFeatured

Self-Improving Agent Task Runner

Agent runs needed isolation, graded feedback, and a loop that actually improves the next prompt.

Approach · Worktree-isolated runner + reviewer subagent scoring diff, logs, and screenshots, emitting the next-iteration prompt.

Closed-loop agent shipping with reviewable diffs.

Claude CodeMCPSubagentsGit worktrees
ZZAZZ

In-App ReAct Assistant

Users needed an assistant that could navigate screens and fill forms — not just chat.

Approach · ReAct loop with a dynamic tool registry; streams from three providers with on-device TTS via ExecuTorch.

Tool-calling assistant that drives the UI.

ReActTool callingExecuTorchMulti-provider
Zepto

Live Order Tracking

Only a subset of orders were trackable in real time across single and batched deliveries.

Approach · Maps-based tracking surfaces for single and batched orders, wired end-to-end into the consumer app.

100% of orders trackable in real time.

React NativeMapsRealtime
ZeptoFeatured

Performance Programme

Screen loads and memory pressure were hurting conversion on low-end devices at 40M+ MAU.

Approach · Cross-cutting profiling, render path cuts, and memory discipline across the consumer app.

35% faster loads · 25% less memory · higher FPS.

React NativeProfilingReanimated
Stanverse

Stan × Upstox IPL 2022

Upstox needed a responsive IPL campaign site that could absorb cricket-scale traffic.

Approach · Single-handedly designed, built, and deployed the campaign site under a tight Mar–May window.

Scaled to 500K+ daily active users.

ReactResponsive webCampaign

Open source & writing

Libraries that scratch real itches.

react-native-yoga-jsi

★ 12

JSI bindings exposing Yoga layout to JavaScript for Skia Canvas or RN SVG.

C++TypeScriptJSI

react-native-skia-helpers

★ 8

Utilities over React Native Skia for rounded-corner paths and drawing helpers.

TypeScriptSkia

use-timers-react

★ 5

React hooks for timers and intervals with automatic cleanup.

TypeScriptReact

Writing

Author at JavaScript in Plain English

Essays on advanced JavaScript, Skia, and Reanimated animation — 800+ monthly reads.

800+

monthly reads

Read on Medium

Skills

Stacked for shipping, not slideshows.

Core

  • React Native
  • React
  • TypeScript

AI & Agents

  • Claude Code
  • Codex
  • MCP
  • ReAct loops
  • Tool calling
  • Subagent orchestration
  • Context engineering

Graphics & Motion

  • Skia
  • Reanimated
  • Gesture Handler
  • SKSL
  • GLSL

State & Data

  • TanStack Query
  • Zustand
  • Redux
  • MMKV

Native

  • Kotlin
  • Swift
  • Jetpack Compose
  • Nitro Modules

Platform

  • Xcode
  • Android Studio
  • GitLab / GitHub
  • Firebase
  • Bun
  • Node.js

Contact

Let's build something that holds up at scale.

Open to select mobile systems work, agent tooling, and performance programmes. Bengaluru timezone — replies usually within a day.

lxmkntgswami@gmail.com

Social

GitHubLinkedInMedium

Location

Bengaluru, India

Asia/Kolkata

Local time

—:—:—