lot
Read case studycat, but for Lottie - preview Lottie animations in your terminal.
RustCLIThorVGLottieHomebrew
Karthikeyan Ranasthala
I'm a Senior Software Engineer on the Lottie Creator team at LottieFiles, building a browser-based animation tool for Lottie.
Work experience
Senior Software EngineerOct 2023Present
Working on Lottie Creator, a browser-based animation editor that blends product interactions with graphics and animation systems.
Senior Software EngineerOct 2022Oct 2023
Software Engineer IIApr 2022Sep 2022
Software Engineer IJan 2020Apr 2022
Progressed through three engineering roles while building consumer-facing financial products on the Tickertape team.
CS AssociateOct 2018Jun 2019
An earlier chapter before moving into software engineering and building in public.
Selected technical work
All →React ThorVG Fiber
Read case studyReact renderer for ThorVG vector graphics via WebAssembly with software and WebGL2 backends.
Try Rolldown in Browser
Read case studyA browser playground for editing, bundling, and previewing React, JSX, CSS, and HTML with Rolldown WASM.
Local Fonts Agent
Read case studyA desktop bridge that makes installed fonts available through a local HTTP API.
RustTauriFontsDesktopHTTP API
Depulso
Read case studyA CLI for deploying prebuilt static sites to Supabase Storage.
SupabaseFly.ioCLITypeScript
Solid Bottomsheet
Read case studyTouch-first bottom sheet for SolidJS with dismiss and snap modes.
SolidJSTypeScriptUI ComponentTouchPortal
Speaking
When Agents Ship Artifacts: From Tool Success to Production Readiness
Upcoming
AgentsNexus India 2026 · 5th Sep 2026
Lottie's Governance and Future: Led by Industry Giants
Google I/O Extended 2024 · GDG New Delhi community event · 7th Jul 2024
Reactify community meetup · 19th Feb 2022Recognition
All →
Supabase Launch Week 6
Depulso won 1st place for its end-to-end static-site deployment platform with CLI, API, proxy, and authentication flow.
Public hackathon · Dec 2022
Masai School Hackathon
1st place
36 Ways is a dating app that matches profiles using answers to 36 questions, then gradually unlocks profile details as the conversation develops.
Internal hackathon · Nov 2019
smallcase head dump
2nd place
Built a Tickertape prototype that explains stock-price inflection points through relevant news, events, corporate actions, and market sentiment.
Internal hackathon · Jun 2023
LottieFiles Q4 2023
3rd place
Built a Telegram Mini App for discovering and sharing LottieFiles animations as stickers.
Internal hackathon · Dec 2023