TL;DR
YC-backed startup 100x.bot is hiring a frontend engineer to build interfaces for autonomous browser agents from its Bangalore office. The role focuses on high-performance, adaptive UIs, Chrome extension recorder UX, and visualizing agent workflows using a modern TypeScript/React stack.
What happened
100x.bot, a Y Combinator S22 company backed by Accel and Inventus, posted a hiring notice for a Frontend Engineer to join its core team in Koramangala, Bangalore. The founders named are Shardul Lavekar and Parth Mudgal. The startup describes itself as developing browser agents that combine record-and-replay determinism with large-language-model intelligence to make web automation faster and more resilient. The opening emphasizes more than routine visual work: candidates will design the client-side “cockpit” for controlling autonomous agents, including a graph-based visualization engine, dynamic UIs responding to Model Context Protocol schemas, and a high-throughput streaming interface for large logs. The role also involves refining a Chrome extension overlay using Shadow DOM to capture user intent without disrupting host pages. Compensation is listed as competitive salary plus significant YC-standard equity. Applicants are asked to email their GitHub and a link to a complex UI they’ve built.
Why it matters
- The position targets the interface layer for autonomous browser agents, an area the company says is key to making agents reliable and efficient.
- High-performance front-end work is required to render large, real-time streams of DOM snapshots and execution traces without lag.
- The role requires building UIs that adapt at runtime to new tools exposed by a Model Context Protocol server, reducing the need for frequent deployments.
- Joining a small YC team offers engineers significant ownership and direct collaboration with the founding team.
Key facts
- Location: Koramangala, Bangalore, India.
- Compensation: Competitive salary plus significant equity (described as YC standard).
- Founders: Shardul Lavekar (ex-Airtel AI, ex-Ola) and Parth Mudgal (ex-Flipkart, ex-Ola).
- Investors: Y Combinator (S22), Accel, and Inventus are listed as backers.
- Role focus: architecting the client-side cockpit for autonomous agents, not just typical layout or Figma-to-code tasks.
- Core responsibilities include a graph-based Agent Visualization Engine, dynamic Model Context Protocol-driven interfaces, high-performance streaming UI, and refining a Chrome extension recorder overlay.
- Frontend tech stack: React, TypeScript, Next.js; styling with Tailwind CSS (with Shadow DOM considerations).
- State and performance tools mentioned: Zustand / TanStack Query, virtualization libraries (e.g., react-window), and atomic state management patterns.
- Protocol and platform interfaces: Model Context Protocol (MCP), WebSockets, and Chrome Extension APIs.
- Experience requirements: React expertise with at least 2+ years and strong TypeScript skills; emphasis on system thinking and handling async and high-frequency updates.
What to watch next
- Whether the company hires for this role and the timeline for onboarding is not confirmed in the source.
- Product milestones such as public demos of the Agent Visualization Engine or the recorder UX are not confirmed in the source.
- Any announcements about wider MCP adoption or integrations beyond the listed stack are not confirmed in the source.
Quick glossary
- Model Context Protocol (MCP): A protocol for exposing tool and model context to clients so UIs and agents can adapt to available capabilities at runtime.
- Shadow DOM: A browser feature that encapsulates styles and markup so injected UI elements do not collide with a host page’s existing DOM and CSS.
- Record-and-replay: A deterministic approach that captures user interactions once and replays them to automate repetitive browser tasks.
- Virtualization (e.g., react-window): A UI technique that renders only visible portions of large lists or streams to preserve performance and reduce memory use.
- DOM snapshot: A captured state of a page’s Document Object Model at a point in time, often used for debugging or replaying UI interactions.
Reader FAQ
Where is the role located?
The posting lists the location as Koramangala, Bangalore, India.
What compensation is offered?
The company states 'Competitive Salary + Significant Equity (YC Standard)'.
What should applicants submit?
Applicants are asked to email their GitHub and a link to a complex UI they have built.
Is remote or international hiring supported?
not confirmed in the source
Location: Bangalore, India (Koramangala) Compensation: Competitive Salary + Significant Equity (YC Standard) Founders: Shardul Lavekar (ex-Airtel AI, ex-Ola) & Parth Mudgal (ex-Flipkart, ex-Ola) At 100x.bot, we are building the interface…
Sources
- 100x (YC S22) Is Hiring a Front End Engineer
- Looking for a front end engineer to join our Bangalore team
- 100x
- Jobs at Y Combinator startups in Bengaluru
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