Senior Software Engineer (Agentic Search) - Web Access Engineer

Tavily is hiring a Senior Software Engineer (Agentic Search) - Web Access Engineer in Amsterdam and London. Level rates it ; you can apply on Level.

Level's read on this job

Builds AI ●●●● is how Level rates this software engineer role: the job is building AI systems.
The posting mentions RAG and AI agents among its tools and skills.
Level classes it as a senior role.
Tavily has 12 other open roles on Level.
This posting went up in the last few days.

AI in this role

ragai-agents

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 web access infrastructure behind a novel search engine designed for agentic AI.

In this role, you will investigate how modern websites communicate with browsers and translate that understanding into production systems operating at internet scale. You will build browser infrastructure and tooling that enables reliable, efficient access to web content across a rapidly changing web.

Your responsibilities will include:

Research and analyse how modern websites communicate with browsers across the complete request lifecycle
Investigate browser fingerprinting, client verification mechanisms, and modern web technologies to enable reliable web access
Build tooling for browser instrumentation, debugging, observability, and large-scale experimentation
Translate technical research into production systems operating at internet scale

Requirements

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 Technologies

Chromium architecture and browser internals
Browser lifecycle and navigation
Chrome DevTools Protocol (CDP)
Playwright, Puppeteer, Selenium, or similar browser automation frameworks
Browser instrumentation and debugging

Web Platform

HTTP/1.1, HTTP/2, HTTP/3 — TLS, DNS, and browser networking
Cookies, browser storage, caching, redirects, and session management
JavaScript execution and modern client-side rendering
Resource loading, page lifecycle, and browser networking
Browser fingerprinting concepts and browser characteristics

Nice to Have

Experience working on browser engines or browser infrastructure
Experience reverse engineering browser or web application behaviour
Experience building internet-scale distributed systems
Go, C++, Rust, or Python
Kubernetes and cloud infrastructure

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.

How we rate this

Senior Software Engineer (Agentic Search) - Web Access Engineer at Tavily rates 86 out of 100 for how much of the daily work is AI. That makes it Builds AI (AI Level 4 of 4). The level is about AI in the job, not seniority.

Classification

Builds AI. The job is building AI systems.

●●●● Builds AI80 to 100
●●●○ Works on AI60 to 79
●●○○ Uses AI40 to 59
●○○○ Little AI0 to 39

Levels come from how often the tools, models and workflows of the role are named in the posting itself. Open the description and count.

Key facts

Senior Software Engineer (Agentic Search) - Web Access Engineer is an open job at Tavily.
Level rates this role AI Level 4 of 4: Builds AI.
The role is based in Amsterdam, Netherlands; Israel; London, United Kingdom.
The job was posted on October 16, 2026.
Seniority: senior.
Applications are handled by Tavily. Apply on Tavily

Prepare for this job

Built from this posting and from similar jobs on Level.

Skills and AI tools this role asks for

RAGAI agents

Also common in software engineer jobs at this level

AWS Machine learning Java Generative AI TypeScript Google Cloud

Pay

Typical software engineer job: $168k

This posting doesn't list pay. Use the typical software engineer figure when pay comes up. See software engineer jobs

Questions you could be asked

How would you design a retrieval step so the model answers from real data instead of guessing?
How do you decide when an AI agent can act on its own versus asking for approval first?
How would you decide a model or AI system is ready to ship?
Tell me about a time a model underperformed in production. How did you find out, and what did you change?

Adapt your resume

List these exact terms on your resume: RAG and AI agents. An applicant tracking system matches the wording, not the idea.
Attach one line of real, concrete experience to at least one of them. A tool named with nothing behind it rarely survives a human read.
Lead with what you built, trained or shipped. This role is judged on the AI system itself, not the tools around it.

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