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dangoldin

7,247 karma · joined March 25, 2008

Currently leading engineering team @ TripleLift (http://triplelift.com/). Formerly I cofounded Makers Alley (http://makersalley.com) and Pressi (formerly Glossi) (http://getpressi.com/dan). Before that I had a stint as a wall street quant, a management consultant, and a brief stint as a product manager.

I write at http://dangoldin.com.

I do a minimal amount of consulting on work with a focus on quantitative engineering, scaling systems, and architecture review. If you have an interesting project with some fun challanges definitely reach out!

Contact info: dangoldin gmail

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dangoldin··on Complexities of e-mail validation logic
Interesting. How did that work? Does that mean that they would only create the user account under the + suffix? I imagine they must have had two email fields - the canonical email for login and then a separate notification email?
dangoldin··on GameStop Is Rage Against the Financial Machine
“The market can remain irrational longer than you can remain solvent.” - supposedly John Maynard Keynes
dangoldin··on Slack Running Slow / Hanging?
You'd think at their size of their team they'd understand that they would need to scale back up in anticipation of the post holiday return to work.

Slack has the most outages of any major company.

dangoldin··on Starship / Super Heavy
Got lost in a rabbit hole after reading this news. Most incredible thing to me was that due to the reusability the per launch costs may end up being $2M (vs $185 million in 1969–1971 dollars - $1.23 billion in 2019 value for the Saturn V).
dangoldin··on Hemingway Editor
This is exactly my workflow!
dangoldin··on Video Games Are the Future of Education
I learned a ton of SAT words just by playing Diablo 2 over and over again searching for magical and unique items. Kind of incredible.
dangoldin··on Doordash and Pizza Arbitrage
I do suspect their focus on logistics and having an existing network would make it easier for them than others. They are doing food delivery through Amazon Fresh and also have been hiring contractors to do package delivery. Food, of course, has it's own constraints but compared to many they would be in a decent spot.
dangoldin··on Doordash and Pizza Arbitrage
True. But that industry already has a duopoly with very strong network effects. Food delivery is extremely fragmented and it looks as if there's no one actually doing it profitably.
dangoldin··on Doordash and Pizza Arbitrage
Yea for sure. At the same time they did acquire Whole Foods and are doing food delivery through prime. They do own the warehouses here rather than acting as couriers but I would not be surprised if they just found out the economics (especially given their strengths) to just not work out for them.
dangoldin··on Doordash and Pizza Arbitrage
This quote summarizes it all for me: "Amazon just bailed on restaurant delivery in the U.S."

If amazon, a "real" business with a reputation built on ruthlessly cutting margin can't get it to work why would anyone else?

dangoldin··on It’s Time to Build
I've been thinking along similar lines - in my mind it boils down to that these days we have problems that only a global government can solve. And you can see this through history - tribes, cities, states, countries, X.
dangoldin··on Class Action Settlements
Yea - and it was still better than the Equifax nonsense!
dangoldin··on Travis Kalanick Is Exiting His Uber Holdings Uber Quickly
I wonder if you can have 20% in the stock and the remaining in various forms of options that end up acting as the remaining 80%. If each of the options counts as its own stock you can do some interesting financial engineering work to make it happen.

Although options themselves are riskier so not sure what sort of incentive that sets.

dangoldin··on Apple’s Ad-Targeting Crackdown Shakes Up Ad Market
That may help the one adtech company but they still wouldn't be able to "sync" (https://www.adpushup.com/blog/cookie-syncing/) their cookies with other companies in the supply chain.
dangoldin··on The making of Jim Simons
There's an AMP workaround I found a few years ago that surprisingly still works. Basically open up the article as an AMP page and then disable the HTTP request to the access module.

More context here: http://dangoldin.com/2017/04/16/amp-and-subscription-paywall...

dangoldin··on AWS Elasticsearch: a fundamentally-flawed offering
There's also https://www.instaclustr.com

We don't use them but had a pretty in depth conversation with them about Kafka and they seemed sharp.

dangoldin··on Solving Num: A combinatoric math game
(Author here) Oh that's pretty clever and better than my approach. I was going to point out that subtraction would still need to be supported but realized we don't need to support negative numbers.
dangoldin··on Ask HN: Best Blogging Platform
I had a similar issue - turns out you can generate it statically locally and commit the generated HTML files: https://help.github.com/en/articles/using-a-static-site-gene...
dangoldin··on Equifax Is Said to Be Near $650M Settlement for Data Breach
That can be a helpful part of the writeup. I'm sure it would motivate a bunch of us to actually do that.
dangoldin··on Facebook Knows How to Track You Using the Dust on Your Camera Lens
Didn't know that but makes a ton sense. Also surprisingly how Instagram became Instagram when they realized all it was being used for photo sharing. People love their photos.
dangoldin··on Facebook Knows How to Track You Using the Dust on Your Camera Lens
Have you heard of Bump? They were doing something similar until they were acquired by Google: https://www.theverge.com/2013/9/16/4736860/bump-acquired-by-...
dangoldin··on Ask HN: Who is hiring? (January 2019)
TripleLift | Full-Time, NYC or Remote

TripleLift (https://triplelift.com) started by launching the world's first and largest Native Programmatic ad exchange that allowed publishers to ditch banner ads and make money through in-feed "native" experiences. Since then we've gotten into the branded content space (https://contentdial.com) and OTT (https://www.youtube.com/watch?v=lI0zYPOWKbE) and are always searching for seamless and respectful ways to help publishers make money off of their content.

AdTech is a complicated and tech heavy space that's pushing the boundary of what's possible so if you're interested in solve hard problems at scale definitely reach out to me at dgoldin@triplelift.com.

We use the following technologies:

- Java: Netty for the high performance NIO

- Scala + Spark: Spark for our data pipeline

- React + PHP + Node: Our UIs and APIs

- Lots of distributed tech: ZooKeeper, Kafka, Spark, Druid

We're looking for the follow roles so please reach out if you're interested:

- Lead DevOps Engineer: DevOps is core to what we do and we want to bring someone on to lead the team.

- Data Scientists: All seniority levels but AdTech experience is preferred since the industry context is so valuable.

- Senior Exchange Engineer: Work on our real time bidding exchange handling billions of auctions every day.

- Solutions Engineer: Work with our commercial team to make sure our customers are successful on our platform by pushing our tech to do more.

- Engineering Manager: We're growing significantly this year and want to grow our engineering team by building a strong management layer.

In all these cases we're hiring aggressively and if you're smart and motivated I'm sure we can find a place for you so please reach out.

dangoldin··on Does AI make strong tech companies stronger?
I think creating a small/lifestyle startup is easier than ever since distribution/globalization is much easier but creating the next big thing is much more difficult.
dangoldin··on Larry Roberts has died
And don't forget "The Dream Machine" (https://www.amazon.com/Dream-Machine-Licklider-Revolution-Co...).

It's not solely about the internet but does an awesome job covering the rise of the PC industry and the launch of the internet.

dangoldin··on Ask HN: Who is hiring? (December 2018)
TripleLift | Full-Time, NYC or Remote

TripleLift (https://triplelift.com) started by launching the world's first and largest Native Programmatic ad exchange that allows sites to monetize using formats that are unique to their sites. Since then we've gotten into the branded content space (https://contentdial.com) and OTT (https://www.youtube.com/watch?v=lI0zYPOWKbE) and are always looking to find new areas of content consumption.

AdTech is a complicated and tech heavy space that's pushing the boundary of what's possible so if you're interested in solve hard problems at scale definitely reach out to me at dgoldin@triplelift.com.

We use the following technologies:

- Java: Netty for the high performance NIO

- Scala + Spark: Spark for our data pipeline

- React + PHP + Node: Our UIs and APIs

- Lots of distributed tech: ZooKeeper, Kafka, Spark, Druid

We're looking for the follow roles so please reach out if you're interested:

- Lead DevOps Engineer: DevOps is core to what we do and we want to bring someone on to lead the team.

- Data Scientists: All seniority levels but AdTech experience is preferred since the industry context is so valuable.

- Senior Exchange Engineer: Work on our real time bidding exchange handling billions of auctions every day.

- Solutions Engineer: Work with our commercial team to make sure our customers are successful on our platform by pushing our tech to do more.

dangoldin··on Aggressive code deprecation
Author here. The old code should still be in version control but there's very little reason to keep it in an active code base. It just adds complexity for someone actively developing.

I'm not saying destroy for the sake of destroying but more when you have made a choice to remove something do it to completion.

dangoldin··on Snap Says DOJ and SEC Are Investigating IPO Disclosures
Interesting take. I'm not close enough to either Bezos or Spiegel but that does not seem like a good combination. Although at that point I'm not sure Snap will have a choice.
dangoldin··on Ask HN: Who is hiring? (August 2018)
TripleLift | VanillaJS, Fullstack, Data, and Exchange Engineers | Full Time | New York | https://boards.greenhouse.io/triplelift

Yes we're adtech but we're working on improving the industry while tackling some difficult problems. We're a small team that's responsible for managing monetization for thousands of publishers and handling billions of requests a day. Rather than doing standard banner ads we allow publishers to create unique ad slots that complement their design and not disrupting the user experience. We're growing quickly and tackling a wide range of problems - ranging from migrating an information-rich Angular application to React, making our data pipeline real time, to running the quickest and most efficient real time bidding auctions.

If interested or just want to learn more please email me at dgoldin@triplelift.com and I'd be glad to chat more. Please mention HN in the subject!

dangoldin··on H&R Block and Intuit Lobbying Against Simpler Tax Filing (2017)
For those interested in the theory of lobbying and special interest groups one of my favorite books is Mancur Olson's Rise and Decline of Nations (https://www.amazon.com/Rise-Decline-Nations-Stagflation-Rigi...). It's an incredibly approachable read that does a wonderful job digging into the incentives and explains why lobbying exists and why it works.
dangoldin··on Molyneux's problem
Reminded me of the McGurk effect (https://www.youtube.com/watch?v=G-lN8vWm3m0 https://en.wikipedia.org/wiki/McGurk_effect). I'm constantly surprised by how our brains work.
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