Top all-time · #6032
Affirm Tech Blog
Company blog · tech.affirm.comprogrammingdata
Affirm Tech Blog is the company blog at tech.affirm.com, writing about programming and data. Since 2017, 13 different Hacker News readers have linked it 15 times, most often “What happens when you swipe a credit card”. It is still writing: the last post was on 2026-10-27, and you can follow it by feed.
Too few sampled comments (5) to say how often HN recommends it.?
Why HN links it
Affirm's engineering blog, linked for a deep dive into what happens in the background when a credit card chip reader processes a payment, and for a post arguing that protobufs are wrong. Most comments are job postings.
Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- What happens when you swipe a credit card2 people · 2 mentions · first linked 2017-03-04
What Hacker News says?
Affirm | Software Engineers | Onsite (SF, NYC, CHI ) | Full-time Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We're looking for motivated software engineers who will build products and systems that serve our customers, merchant partners, and employees. Our team must maintain utmost efficien…
Comment linking /
on “Ask HN: Who is hiring? (January 2020)”Submitted What happens when you swipe a credit card as a story · 470 points
HN discussionAffirm|Software Engineers|Onsite (SF,NYC,CHI)|Full-time Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We're looking for motivated software engineers who will build products and systems that serve our customers, merchant partners, and employees. Our team must maintain utmost efficiency and de…
Comment linking /
on “Ask HN: Who is hiring? (February 2020)”Submitted Scaling Shapley Values with Spark for Interpreting Machine Learning Models as a story · 3 points
HN discussionAffirm|Software Engineers|Onsite (SF,NYC,CHI )|Full-time Affirm is reinventing credit to make it more honest and friendly, giving consumers the flexibility to buy now and pay later without any hidden fees or compounding interest. We're looking for motivated software engineers who will build products and systems that serve our customers, merchant partners, and employees. Our team must maintain utmost efficiency and d…
Comment linking /
on “Ask HN: Who is hiring? (December 2019)”Submitted From hackathon prototype to production ML: Building PredictPay at Affirm as a story · 2 points
HN discussionCame across this article which talks about what goes on in the background: https://tech.affirm.com/deep-dive-payments-60f5d17f6c71
Comment linking /deep-dive-payments-60f5d17f6c71
on “Ask HN: Why are credit card chip readers so slow?”Submitted Affirm: Scaling Our Database for Peak Season as a story · 2 points
HN discussionI agree with a lot of this post, although the tone isn’t great. The problems we ran into with protobufs at my job include: 1. The schema evolution claims don’t really hold water for our systems. 2. The type system isn’t very expressive (e.g. no generics means you have to write the same error wrapper for all your endpoints) and lots of our devs found it unintuitive, especially oneofs. 3. The “default value”/nullable…
Comment linking /defining-data-models-with-idol-a31093cd0707
on “Protobuffers Are Wrong”Submitted Adventures with Content Delivery (mostly CloudFront) Optimizations as a story · 2 points
HN discussionSubmitted Metrics, Monitoring, and Alerting at Affirm as a story · 2 points
HN discussionSubmitted Verifying code changes by testing against production data as a story · 2 points
HN discussionSubmitted Secure external subdomains at Affirm as a story · 2 points
HN discussionSubmitted Rebuilding our ProxySQL fleet with Ansible and staged DNS cutovers as a story · 1 points
HN discussionSubmitted Modeling Loan Repayment Behavior and Cash Flow as a story · 1 points
HN discussion