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Posted by signa11 7 hours ago

Fintech Engineering Handbook(w.pitula.me)
299 points | 104 commentspage 2
ricardobayes 6 hours ago|
Does anyone have more learning resources in this field? Any model implementations, pet projects, anything to get going?
cirrhosis 6 hours ago||
I have just left a fintech company after 5 years and I can say after reading this, it looks legit to me (not AI slop as someone asked). These are the same sort of lessons I learned during my time in the industry.

I would recommend anyone starting in fintech to take some time to understand accounting principles and the ledger in a bit more depth than just debits vs credits - this is likely what is most unfamiliar to programmers.

Also financial software is very data-heavy and I learned more about databases in my time working in fintech than the 15 years before that. I think going into a bit more detail about even the basics (indexes) will save a lot of headaches.

sdevonoes 6 hours ago|
> I would recommend anyone starting in fintech to take some time to understand accounting principles and the ledger in a bit more depth than just debits vs credits

Any good resources you would recommend to learn more about this?

charlieirish 6 hours ago||
Similar style and message to https://shapeofthesystem.com/
Ajpop3y 3 hours ago||
Thank you so much for this. It came at the needed time
senthil_rajasek 5 hours ago||
Does fintech here mean "crypto" and central bank currencies transactions?
Ajpop3y 3 hours ago||
Thank you. It came at a much needed time.
dapperdrake 6 hours ago||
First half didn’t sound so bad.
dc_giant 7 hours ago||
Sorry have to ask these days. Is this carefully written down information from years of experience in the field or AI slop?
jagged-chisel 7 hours ago||
Appears that the author got some help organizing the document, but wrote it all themselves.
krever 6 hours ago|||
Hey, author here :)

Its at least 80% organic artisanal writing and maybe 20% AI when I needed help with grammar, completeness, broader perspective and everything around.

logdahl 5 hours ago|||
It may be a good idea to start the book with a really short "About the author" to state exactly this and your work experience. Otherwise looks well written to me, good job! :)
gib444 1 hour ago|||
Native English speaker. I scanned it and IMO there's a slight overuse/misuse of hyphens. Maybe the AI tool could be asked to identify and correct? (The hyphens might be triggering people to think it's AI, too).

They mostly need replacing with a full stop or a colon.

E.g.

"In practice this means storing the amount as an integer in its smallest unit - €12.34 becomes 1234"

->

"In practice, this means storing the amount as an integer in its smallest unit: €12.34 becomes 1234."

or

"In practice, this means storing the amount as an integer in its smallest unit (e.g., €12.34 becomes 1234)"

thewisenerd 7 hours ago|||
from the author's mastodon post [0]

    I just published Fintech Engineering Handbook distilled from 6 years of tears, sweat and swears. 
    It’s a free ~25-page resource with various hints and patterns around handling money. 
    Tell me what you think!
other than that, peruse the commits on the source [1], or wait for the author to respond.

[0]: https://mas.to/@krever/116814803588993437

[1]: https://github.com/Krever/fintech-engineering-handbook/commi...

zipy124 7 hours ago|||
Whilst I wouldn't say anything in it requires years of experience to know, this would be helpful for someone who hasn't considered anything about monetary systems. It doesn't read like slop, but I could be wrong but even so it all seems fairly reasonable (I've only fully read about 50% before realising there's nothing new here for me, and then skimmed to rest).
manwithopinions 7 hours ago||
Skimmed it and based on my experience in fintech, it looks good, accurately represents the real world. I guess there’s still a chance it is AI generated but it doesn’t seem like vacuous slop, it has substance!
jgalt212 5 hours ago||
> Webhooks are the most common way to receive signals from external systems, but processing them safely is not trivial

I see webhooks documented all the time, but I have yet to use them in practice, nor have my customers requested them. Is the above not true, or are they widely used in some sectors and not others?

intelcoders 5 hours ago||
In payment gateway integration, webhooks are usually considered a single source of truth for updating the payment status, with status check api as a fallback.
f3408fh 3 hours ago|||
They are indeed everywhere, but it's possible you don't have a need for them. For example, every time you buy something online using Stripe, the seller receives a webhook indicating that a purchase was completed.
weatherlight 4 hours ago||
I receive webhooks all the time as ack that something was processed/ or a notification of the status of some sort of thing in an external system that we don't control.
anchorapi 5 hours ago|
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