Hi, I'm Shivanshu Gupta

Designed the entire architecture and shipped Kosha — an AI-powered Flutter app with complex integrations and Go backend services.

• Built Kosha, an AI-powered Flutter app; designed the entire system and shipped 15+ screens myself covering onboarding, login, reminders, to-dos, insights feed, and a daily calendar view.
• Hooked up Gmail, Google Calendar, Drive, and Telegram, handled the frontend integrations and wrote all backend services in Go, including APIs for profiles, to-dos, one-time and recurring reminders, and calendar scheduling logic.
• Worked on the AI side too, tuned agent prompts for smarter reminder and to-do creation and built a classifier layer to manage a multi-agent setup using OpenAI Codex, Gemini 2.5, and Claude.
• Kept the codebase healthy with focus on widget reusability, performance, and clean structure, and made Figma-to-code handoffs smoother using MCP.
• Handled PR reviews, helped interns navigate the codebase, and jumped in whenever UI or navigation got complicated.

Scaled brand platforms, owned SEO strategy, implemented server-driven UI, and developed custom trading interfaces.

• Scaled probo.in to handle 200M+ annual traffic by going deep on SSR, SSG, CDN caching, lazy loading, critical CSS and asset optimisation, cut the cost of running multiple server instances by 60%.
• Built dynamic landing pages with Strapi giving the marketing team full control over campaigns, and set up error alerting and monitoring so issues got caught and flagged before users felt them.
• Owned SEO end to end, implemented JSON-LD structures, breadcrumbs and Open Graph tags, then wrote a backend microservice generating real-time OG images for every category, topic and event page with live stats, pushing rankings and social media postings up by 30%.
• Shipped a fully functional trading experience on probo.in for both mobile and desktop users, and built a custom trading chart using SVG and vanilla JS with no third-party library, directly contributing to a 15% increase in trades on probo.in.
• Implemented server-driven UI so interfaces could be updated and configured dynamically from backend without pushing new frontend code every time thus saving frontend team bandwidth.
• Worked closely with the growth team on user experimentation, ran A/B tests on key flows and iterated on results, and built web-to-app funnels that drove Android and iOS installs directly from the website.
• Kept the codebase in good shape throughout with performance optimisation, reusable components, clean code, pixel perfect UI, mobile responsive and i18n ready, handled REST API integrations, CI/CD, deployments and PR reviews, and managed a team of junior and mid-senior engineers.

Joined as the founding engineer on the web team; took full ownership to architect the brand website, control dashboards, and trading flows.

• Joined as a founding engineer on the web team, took full ownership from day one and architected probo.in from scratch, the brand website, marketing pages and campaign landing pages, built it mobile responsive, pixel perfect, SEO optimised with semantic HTML, SSG and a solid component architecture.
• Built app download flows and web-to-mobile funnels on probo.in to drive Android and iOS installs; probo.in became a key channel for user acquisition from early on.
• Architected Cerebro from scratch, a React dashboard that became the control centre for the entire platform covering user management, events, categories, topics, trading formats, permissions, campaigns, notifications, user segments, help and support, and product config; designed the UI and wrote backend APIs for most of it myself.
• Architected trading web from scratch, a lightweight React app optimised for mobile experience, built the complete flow: login, auth, onboarding, feed, in-app payments, trading formats, trading bottom sheets and rapid feature releases on Android/iOS apps using WebViews.
• Was part of the growth team, worked on user experimentation, tested different flows and iterated based on data to improve engagement and retention across the platform.
• Built all UI pixel perfect, mobile responsive and i18n ready, wrote reusable components, kept performance and code quality as a constant priority, and handled REST API integrations, CI/CD, deployments, PR reviews and managed a team of junior and mid-senior engineers.

Developed real estate management modules, integrated payment workflows, and built bulk messaging pipelines.

• Worked on Syndication Pro, a real estate management platform built for capital raising and investor relations workflows, developed pixel perfect mobile responsive reusable UI components and wrote backend APIs for various modules across the platform.
• Integrated Stripe payment gateway to handle one-time payments, subscriptions and usage-based billing, implemented ACH check processing and configured webhooks for real-time payout and refund updates.
• Built a bulk email messaging service from scratch using AWS SES, SNS, SQS, S3 and Lambda with webhooks for real-time delivery insights; handled PR reviews, mentored interns and junior developers, and contributed to sprint planning.

Developed cross-platform mobile apps in React Native and real-time streaming integrations.

• Built and maintained cross-platform mobile applications in React Native, shipped consistent native-like experiences on both Android and iOS, handled app deployment, signing, versioning and releases on the App Store and Play Store.
• Built a multi-user video application using Twilio Programmable Video to connect teachers and students in real time, and developed pixel perfect mobile responsive reusable UI components using React, HTML, CSS, JavaScript and Bootstrap.