# Software Engineer, Knowledge Engine – Data Infrastructure

The Knowledge Platform team builds Exa's knowledge engine. We continuously synthesize information from across the web and beyond into one of the world's largest open-domain knowledge graphs, with hundreds of billions of evidence-backed claims. The work has two halves: construction pipelines that decide what to trust, and retrieval engines that decide how best to search it. Our goal is to give agents answers to any factual question about the world with unprecedented precision and completeness. In this role, you'll build the knowledge construction pipelines: turning everything from a 100k docs/s web crawl to vendor datasets into a graph of what is true about the world, and keeping it correct as data changes. This is greenfield work with a massive scope. There is no off-the-shelf system for building a model of the world from the open web, so you'll make foundational decisions, from how claims are represented and resolved to how trust is assigned and how the graph evolves over time, that everything built on top of it depends on. What you'll do Continuously synthesize the live web crawl, vendor deliveries and APIs, and other off-the-web sources into one typed graph: extraction that turn

- **Id**: 3989457
- **Url**: <https://alion.io/job/exa-software-engineer-knowledge-engine-data-infrastructure>
- **Role**: Backend
- **Role family**: Backend
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Zurich, Switzerland
- **Countries**: CH
- **Hiring countries total**: 0
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-09T22:44:31Z
- **Employer posted date**: 2026-11-09
- **Last verified at**: 2026-11-09T22:51:27Z
- **Board verified**: yes
- **Days open**: 0
- **Description format**: text
- **Description chars**: 3936
- **Description truncated**: no
- **Relocation offered**: no
- **Industries**: Search Engines, Vector Search & RAG, AI Search, Web Scraping & Proxy Networks

## Company

- **Id**: 13137
- **Name**: Exa
- **Domain**: exa.ai
- **Url**: <https://alion.io/company/exa>
- **Size band**: 501-1000
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Ashby

### Truth index

- **Grade**: B
- **Score**: 83
- **Open postings**: 19
- **Ghost share**: 0
- **Stale share**: 0.474
- **Repost share**: 0
- **Time to fill p50 days**: 81
- **Computed at**: 2026-11-09T06:03:00Z

## Salary

- **Min**: 180000
- **Max**: 350000
- **Currency**: USD
- **Period**: year
- **Usd annual**: 350000

## Technologies

- **Delta Lake** — Optional: no
- **Exa** — Optional: no
- **Knowledge Graph** — Optional: no
- **Python** — Optional: no
- **Spark** — Optional: no

## Trust

- **Level**: ok
- **Days open**: 0

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Lifecycle

- Event: open; At: 2026-11-09T22:51:27Z

## Liveness

- **Score**: 86
- **Band**: hot
- **Label**: Hiring now
- **P open**: 1
- **P active**: 0.86
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 81
- **Reasons**: conf:1, win:early
- **Computed at**: 2026-11-10T00:21:33Z

## Pay

- **Stated usd annual**: 350000
- **Is top pay**: yes

---
[Page](https://alion.io/job/exa-software-engineer-knowledge-engine-data-infrastructure) · [JSON](https://alion.io/job/exa-software-engineer-knowledge-engine-data-infrastructure.json)

Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.