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Strategic activity mapping for software architects May 25, 2025 Book review: Clojure for the Brave and True Oct 2, 2022 All developers should know UNIX Jun 30, 2022 Automation and coding tools for pet projects on the Apple hardware May 28, 2022 Tools of the craft Dec 18, 2021 Node.js and Lambda deployment size restrictions Mar 1, 2021 What programming language to use for a brand new project? Feb 18, 2020 Returning security back to the user Feb 2, 2019 A conservative version of Facebook? Aug 30, 2018 Facebook is the new Microsoft Apr 14, 2018 Quick guide to Internet privacy for families Apr 7, 2018 Copyright in the 21st century or how "IT Gurus of Atlanta" plagiarized my and other's articles Mar 21, 2017 Windows 10: a confession from an iOS traitor Jan 4, 2017 Don't trust your cloud service until you've read the terms Sep 27, 2016 Why I switched to Android and Google Project Fi and why should you Aug 28, 2016 In search for the mythical neutrality among top-tier public cloud providers Jun 18, 2016 Files and folders: apps vs documents May 26, 2016 IT departments must transform in the face of the cloud revolution Nov 9, 2015 Top Ten Differences Between ActiveMQ and Amazon SQS Sep 5, 2015 What Every College Computer Science Freshman Should Know Aug 14, 2015 The longer the chain of responsibility the less likely there is anyone in the hierarchy who can actually accept it Jun 7, 2015 My Brief Affair With Android Apr 25, 2015 Why I am Tempted to Replace Cassandra With DynamoDB Nov 13, 2014 Software Engineering and Domain Area Expertise Nov 7, 2014 Eminence Grise: A trusted advisor May 13, 2009

Software Engineering and Domain Area Expertise

November 7, 2014

When I was in college taking freshman year chemistry I wanted to have a leg up on my finals. Chemistry wasn't my thing, but I wasn't horrible at it. I was getting Bs and Cs.

I set out to write a program for my TI-92 graphing calculator that could look up chemical elements from periodic table, draw orbitals, and balance chemical equations. I called it "TETRIS" so that a teaching assistant checking my calculator at the exams would think I just have a game on it. By the time I perfected this program I not only knew the entire periodic table by heart, I could draw an orbital model of any element and balance chemical equations in my head without even using a piece of paper.

At my last job I worked on high frequency trading and I had to get FINRA Series 7 registration. On top of technical knowledge I had to become a domain expert in US equities trading. I don't think there was any point in my career where I did not have to develop an intimate understanding of the business area my application was in.

I took a class on asset securitization a few years ago for my job. We had to come up with a mathematical model that represented an auto lease securitization prospectus we were given and could show anticipated investment returns under different scenarios. I saw expert financial analysts fudge their models half way through their spreadsheets to make the numbers match the prospectus because they couldn't write an Excel macro!

Meanwhile, as a software engineer I took a technical approach to the problem and came up with a mathematical model that required no tweaking regardless of the conditions - because I wrote my model in Python. No wonder our economy collapsed in 2008 - the very people entrusted with building the right investment models fudge their spreadsheets to make them look right.

The reality is that in order to build quality products software engineers have an additional burden of having to become domain experts. On the other side of this coin, business people who think they can shy away from technology really could benefit from expanding their skill set to run better businesses. But in the meantime, give software engineers in your company some credit where it is due - they are not just experts in technology, they could probably run your company better than you can.