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On the role of Distinguished Engineer and CTO Mindset Apr 27, 2025 The future is bright Mar 30, 2025 2024 Reflections Dec 31, 2024 The day I became an architect Sep 11, 2024 Are developer jobs truly in decline? Jun 29, 2024 Form follows fiasco Mar 31, 2024 Thanksgiving reflections Nov 23, 2023 Working from home works as well as any distributed team Nov 25, 2022 Book review: Clojure for the Brave and True Oct 2, 2022 The Toxic Clique Sep 28, 2022 All developers should know UNIX Jun 30, 2022 Good developers can pick up new programming languages Jun 3, 2022 Java is no longer relevant May 29, 2022 There is no such thing as one grand unified full-stack programming language May 27, 2022 Best practices for building a microservice architecture Apr 25, 2022 Kitchen table conversations Nov 7, 2021 What programming language to use for a brand new project? Feb 18, 2020 On elephant graveyards Feb 15, 2020 Microsoft acquires Citus Data Jan 26, 2019 Teleportation can corrupt your data Sep 29, 2018 What does a Chief Software Architect do? Jun 23, 2018 Leaving Facebook and Twitter: here are the alternatives Mar 25, 2018 When politics and technology intersect Mar 24, 2018 The technology publishing industry needs to transform in order to survive Jun 30, 2017 Why it makes perfect sense for Dropbox to leave AWS May 7, 2016 LinkedIn needs a reset Feb 13, 2016 In memory of Ed Yourdon Jan 23, 2016 IT departments must transform in the face of the cloud revolution Nov 9, 2015 We Live in a Mobile Device Notification Hell Aug 22, 2015 What Every College Computer Science Freshman Should Know Aug 14, 2015 On Maintaining Personal Brand as a Software Engineer Aug 2, 2015 Book Review: "Shop Class As Soulcraft" By Matthew B. Crawford Jul 5, 2015 The Clarkson School Class of 2015 Commencement speech May 5, 2015 On Managing Stress, Multitasking and Other New Year's Resolutions Jan 1, 2015 Software Engineering and Domain Area Expertise Nov 7, 2014 Infrastructure in the cloud vs on-premise Aug 25, 2014 On anti-loops Mar 13, 2014 On working from home and remote teams Nov 17, 2013 Thanking MIT Scratch Sep 14, 2013 Thoughts on Wall Street Technology Aug 11, 2012 Scripting News: After X years programming Jun 5, 2012 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.