Merge #748

748: Add Freetrade.io r=poteto a=ifuller1

## Add Freetrade.io

- [x] I have read the [contributing guidelines](https://github.com/poteto/hiring-without-whiteboards/blob/master/CONTRIBUTING.md)
- [x] I agree to the [Code of Conduct](https://github.com/poteto/hiring-without-whiteboards/blob/master/CODE_OF_CONDUCT.md)
- [x] I have followed the [format](https://github.com/poteto/hiring-without-whiteboards/blob/master/CONTRIBUTING.md#format) prescribed in the contributing guidelines
- [ ] (OPTIONAL) In your pull request message, add additional context on the interview process if necessary


Co-authored-by: Ian <ifuller1@users.noreply.github.com>

README.md

@@ -232,6 +232,7 @@ Additions to this document that are properly formatted will automatically be pus
 - [fournova](https://www.fournova.com/jobs) | Remote | Take-home project, discussion via video call
 - [FreeAgent](https://www.freeagent.com/company/careers) | Edinburgh, UK | Take-home project, pair programming, discussion and interviews
 - [Freeletics](https://www.freeletics.com/en/corporate/jobs) | Munich, Germany | Small real-world challenge, multiple interviews on-site/remote and social gathering with team.
+- [Freetrade](https://www.freetrade.io/careers) | London, England | Initial hangout with fizz buzz style question followed by an on-site real world coding question and systems design conversation.
 - [FRIDAY](https://friday-jobs.personio.de) | Berlin, Germany | Take-home real-world challenge, interview on-site or remote
 - [Frontside](https://frontside.io/careers) | Austin, Texas | Phone interview with remote pairing session. Followed by in person pairing (paid for the day) and lunch with the team.
 - [Funda](https://www.funda.nl/vacatures) | Amsterdam, The Netherlands | Take Home test + Discussion On-Site/Remote