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Senior Software Engineer (Agentic Search) – Web Rendering Engineer

Tavily

On-siteSeniorPosted 10 Sept 2026

What this role requires

6 requirements, read out of the advert rather than guessed from the job title:

Also mentioned, not required: JavaScript, Chromium, Playwright, Puppeteer, Selenium, React, Vue, Angular, Svelte, Resource loading. Worth having, but their absence is not what gets a CV filtered out.

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Job description

 

About  Tavily  

We're building the infrastructure layer for agentic web interaction at scale. Our API is designed from the ground up to power Retrieval-Augmented Generation (RAG) and real-time reasoning in AI systems. By connecting LLMs to high-quality, trustworthy web content, we help developers build agents that are not only intelligent — but also informed.  

We work with some of the most innovative teams in AI — from small startups shaping the ecosystem to the largest enterprises deploying AI at scale. Whether it's powering sales assistants, research copilots, or internal knowledge tools, we're the missing link between LLMs and the real world.  

The Role

We are looking for a Senior Software Engineer to build the rendering infrastructure behind a novel search engine designed for agentic AI. In this role, you will design systems that transform modern web applications into high quality structured content for search and AI. You will work on browser rendering, JavaScript execution, and large-scale rendering infrastructure capable of processing billions of pages efficiently. Modern websites increasingly rely on client-side rendering, dynamic data loading, and complex application frameworks. Your work will ensure we can reliably render, understand, and extract valuable information while minimising cost  and latency. 

Read the full description (32 more sections)

In this position, your responsibility will be to:

Design and build large-scale rendering systems for modern web applications

Develop browser-based rendering infrastructure capable of executing complex JavaScript applications reliably

Research how modern frontend frameworks render and deliver content

Improve rendering quality, completeness, and performance across diverse websites

Optimise rendering cost, latency, resource utilisation, and throughput at internet scale

Translate rendering research into reliable production systems

You may be a good fit if you:

Have 5+ years of experience as a software engineer working on production backend or infrastructure systems and are an expert in several of the following areas:

Browser Rendering

Chromium rendering pipeline — DOM, Layout, Paint, and Compositing

JavaScript execution inside browsers and rendering lifecycle and page readiness

Headless browser execution and browser instrumentation

Chrome DevTools Protocol (CDP)

Playwright, Puppeteer, Selenium, or similar frameworks Modern Web Applications

React, Vue, Angular, Svelte, and modern frontend architectures

Server-side rendering (SSR), client-side rendering (CSR), and streaming rendering

Single-page applications (SPA) and Progressive Web Apps (PWA)

Resource loading, lazy loading, and modern JavaScript bundles

Strong candidates may also have experience with:

Building and operating high-throughput content processing pipelines at internet scale

Distributed systems design and performance optimisation

Open-source contributions or active involvement in the engineering community

Conference talks or technical publications

We conduct coding interviews as part of the process.

Why  Tavily ?  

Full ownership  — small team, you own the entire infrastructure, not a slice of it  

Real scaling challenges  — bursty scraping workloads, cache invalidation, multi-region, millions of daily requests  

AI-native company  — your infra directly powers AI agents used by leading companies in the space.  

 

 

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