Sid Jain Journey

Résumé

Experience

ICANN-accredited registrar building AI products for domain ownership and sales.
Senior Full Stack Engineer
Jan 2025 - Present
- Built Namefi Outbound, an AI tool that finds potential domain buyers and their contact details, then drafts outreach messages. Reduced this work from days to about five minutes per domain.
- Led migration to a new monorepo with Next.js, Hono, and shared developer tooling. Built server-rendered and statically generated pages, Privy/wallet authentication, domain registration, checkout, and payment integrations.
- Replaced Airflow with Temporal for domain operations; built Temporal workflows for listing ingestion and Namefi Studio’s logo and video generation.
- Used traces and evals to reduce repeated buyer searches through progressive model escalation and shared evidence; reused completed model results on retry to avoid duplicate spend.
- Built an internal analytics agent with Vercel AI SDK tools for Google Analytics, Twitter Analytics, and PostHog; integrated Exa search. Developed AI usage metering.
AI-assisted educational content platform for structured curricula and assessments.
Lead Full Stack Engineer
Apr 2024 - Jan 2025
- Built EdWrite’s CMS backend, TanStack Table data grid, and shared UI components with designers.
- Versioned content schemas so exam formats could evolve without breaking client apps or services; defined TOEFL schemas with ETS subject-matter experts.
- Shipped a media recommender using embeddings and pgvector similarity search, with LangChain self-querying to generate metadata filters from natural-language queries.
- Built AI-assisted question, audio, and image generation with expert review and publishing approval.
- Led two CMS engineers and a Flow-to-TypeScript migration using codemods and AI-assisted refactoring.
Client work through Yuppies Tech.
Self-employed
Jan 2021 - Apr 2024
Full-stack and mobile engineering with client product teams and their CTOs or engineering leads.
- Veera Browser: led a Chromium-based Android browser through Play Store launch, maintaining C++ and Java patches, upstream updates, and release tooling. Later established the iOS platform and release setup.
- Texts: shipped the Facebook Messenger integration in TypeScript and Electron; reverse-engineered Messenger’s undocumented interfaces and implemented MQTT transport, typed Thrift codecs, message synchronization, and media handling.
- ZebPay: modernized iOS and Android apps and release pipelines; shipped exchange and payment features, wallet integrations, and country-specific KYC.
- Mitsubishi Motors: built MiAR’s native iOS and iPadOS apps and React WebAR experience, optimizing 3D vehicle assets for mobile devices and building photo-contest tooling.
- Airbus Tripset: built the React Native app and backend integrating Airbus and Amadeus APIs, travel guidance, itineraries, and notifications, with Milkinside as design partner.
Consumer beauty and skincare commerce.
Head of Mobile Engineering
Jan 2020 - Jan 2021
- Led 10 mobile engineers building native Android and iOS apps in Kotlin and Swift, working with product and interaction designers.
- Designed backend-driven UI architecture for dynamic layouts and rich animations; built and optimized product-listing and product-detail screens.
- Defined API contracts with backend engineers and established mobile CI/CD, analytics, deep linking, and error monitoring.
Smart travel platform built for Lufthansa Group with BCG Digital Ventures.
Founding Engineer
Nov 2018 - Dec 2019
- Designed the native mobile architecture and release automation, built Terraform-managed AWS infrastructure, and shipped iOS and Android features for Eurowings.
- Joined as the first engineering hire; led a five-developer full-stack team and partnered with the CTO on hiring.
Fitness and nutrition platform later acquired by Withings.
Senior Software Engineer
Nov 2017 - Oct 2018
- Architected a hybrid Apple TV fitness app.
- Built cross-platform mobile features across JavaScript, Swift, Objective-C, Java, and Kotlin.
Indian real estate search and transaction platform.
Software Development Engineer II
Oct 2016 - Oct 2017
- Led Housing’s React Native app architecture, sharing JavaScript across iOS and Android.
- Designed its state management, reactive data flows, offline persistence, and component-driven UI. Also built automated testing and release systems covering diagnostics, signed builds, beta distribution, and over-the-air updates.
- Contributed to Housing.com's Progressive Web App for users on slow and inconsistent network connections.
Bridg, 1mg, HornOk, Volkno, Meriad, and self-employed work.
Software Engineer and Consultant
2015 - 2016
- Built web and mobile products for email and customer-data tools, real-time medical consultations, and connected fleet management using JavaScript, Java, and Ruby on Rails.
- Mentored 1mg's mobile team on hybrid app architecture and modern development tooling.