# Putting the Tech in Fintech: How We Use FIX to Execute Trades at Scale

DevFeed: [Putting the Tech in Fintech: How We Use FIX to Execute Trades at Scale](<https://devfeed.tech/articles/putting-the-tech-in-fintech-how-we-use-fix-to-execute-trades-at-scale-20463.md>)

Original publisher: [Read original article](<https://eng.wealthfront.com/2026/04/21/putting-the-tech-in-fintech-how-we-use-fix-to-execute-trades-at-scale/>)

Author: Grace Sun

Published: 2026-04-22T00:27:03Z

Content type: article

Language: en

Sources: [Wealthfront](<https://devfeed.tech/sources/wealthfront.md>)

Topics: [distributed-systems](<https://devfeed.tech/topics/distributed-systems.md>), [networking](<https://devfeed.tech/topics/networking.md>), [Transactions](<https://devfeed.tech/topics/transactions.md>), [Back end](<https://devfeed.tech/topics/backend.md>), [IP routing](<https://devfeed.tech/topics/ip-routing.md>), [TCP/IP](<https://devfeed.tech/topics/tcp-ip.md>)

Tags: [architecture](<https://devfeed.tech/tags/architecture.md>), [backend](<https://devfeed.tech/tags/backend.md>), [distributed](<https://devfeed.tech/tags/distributed.md>), [financial](<https://devfeed.tech/tags/financial.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [networking](<https://devfeed.tech/tags/networking.md>), [route](<https://devfeed.tech/tags/route.md>), [scale](<https://devfeed.tech/tags/scale.md>), [systems](<https://devfeed.tech/tags/systems.md>), [tcp-ip](<https://devfeed.tech/tags/tcp-ip.md>), [tech](<https://devfeed.tech/tags/tech.md>), [technology](<https://devfeed.tech/tags/technology.md>), [trading](<https://devfeed.tech/tags/trading.md>), [transactions](<https://devfeed.tech/tags/transactions.md>), [wealthfront-engineering](<https://devfeed.tech/tags/wealthfront-engineering.md>)

## AI overview

Wealthfront explains the distributed-systems infrastructure it uses to route and execute large volumes of stock trades. The article describes broker networking, IP routing, the FIX protocol, and the application layers supporting automated, low-latency trade execution.

## Source excerpt

At Wealthfront, the "tech" in financial technology isn't just a buzzword--it's the foundation of everything we build. Beneath the intuitive frontend our clients interact with lies a complex ecosystem of distributed systems. One of the most critical pieces of that backend architecture is the engine that enables us to route massive volumes of trades efficiently. ... Read more