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Vijay Singh

@vijaysingh11

Senior Frontend Engineer at Delivery Hero who built Cape Fly, a RAG Slack bot that cut design-system response times to under 10 seconds.

Germany

Message

At Delivery Hero, I designed and built Cape Fly, an agentic RAG Slack bot using Gemini on Vertex AI. It’s used by about half of the design-system community, and replies went from about one day to under 10 seconds.

I’ve built Cape’s component libraries, design tokens, and CI, including a custom MCP server that grounds Claude’s UI generation in real component and token contracts. I also led frontend delivery of an executive KPI dashboard and built an internal developer portal from scratch.

Experience

Work history, roles, and key accomplishments

Current

Senior Software Engineer

Current

Delivery Hero

Jul 2024 - Present (2 years 4 months)

Designed and built Cape Fly, an agentic RAG Slack bot using Gemini on Vertex AI, reducing reply time from about 1 day to under 10 seconds. Led frontend delivery of the executive KPI dashboard and built the internal developer portal frontend from scratch.

React TypeScript NodeJS Hono BigQuery Redis Kubernetes Jest Cypress Playwright Sentry Grafana PagerDuty MCP RAG Gemini Vertex AI

Software Engineer II

Delivery Hero

Oct 2021 - Jun 2024 (2 years 8 months)

Re-architected the design-token structure with the design lead, growing themes from 5 to 14 (later 18) and reducing token bundle size by 15%. Built the first components of Cape and its engineering guidelines, and set up CI/CD with Docker-based visual regression testing.

Design Tokens Figma React TypeScript Storybook CI CD Docker Visual Regression Testing Accessibility RTL

SDE II / SDE I

InMobi

Jan 2019 - Oct 2021 (2 years 9 months)

Led the UI team for the Audience Intelligence Platform, mentoring engineers through delivery with unit and integration testing. Built the Customer Data Platform UI and reusable components with generated docs for InMobi's design system.

React TypeScript UI Development Unit Testing Integration Testing Design Systems

Software Engineer

Paytm

May 2018 - Jan 2019 (8 months)

Built Salary Accounts Management and Web Remittance, corporate net-banking and money-transfer web applications. Added live notifications to net banking over WebSockets, pushing payment events to users in real time.

Web Development WebSockets Real time Notifications JavaScript

Software Development Engineer

Wadi.com

Jan 2016 - May 2018 (2 years 4 months)

Fixed a memory leak in the e-commerce catalog export by replacing whole-catalog loading with streaming. Lead contributor on Wadi Grocery's mobile web app and a new checkout platform across KSA and UAE.

Ecommerce Mobile Web Check Out Streaming JavaScript