Trading System Design: Junior Engineer Architecture

0:00If you want to get a tech job making over 350 000 a year you're going to need to build

0:05a real world complex software engineering project from scratch So in this video I'm going to teach you how you

0:12can build your own algorithmic trading system And this exact system being on my resume helped me land jobs at

0:21TikTok Square Microsoft Oscar Health Coinbase Figma and most recently my brand new job at Headway So if you're a

0:31computer science student who wants to stand out from the crowd stop and save this video This video focuses on

0:39the system architecture that a junior software engineer should be able to build and explain during a job interview At

0:49the junior level your goal is to prove that your system works So here's a concrete example Let's say you're

0:59building an algorithmic trading system and it has one TypeScript process one database and one brokerage connection And every few

1:09seconds a loop pulls the latest prices Your strategy ingests those prices checks its rules and decides when to buy

1:21or sell Then you save the order to your database before you ever communicate to the brokerage in order to

1:30make your orders item potent Then the broker submits the order and you re counsel the result back into your

1:41portfolio You'll then go with paper trading to start So if there's a bug you're not risking your actual money

1:53And you'll ensure that when you go to real trading you have a stable order ID That way you'll never

2:04buy the same stock twice with just one order And you also want to save everything into some sort of

2:14append only log including the prices you saw the decisions you made and the broker's response That way if your

2:25system crashes it can pick up exactly where it left off And now congratulations you've built a real junior level

2:36software engineering system Now this isn't enough to get to mid level so if you want that video then like

2:46and follow for part two