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Strategic activity mapping for software architects May 25, 2025 On the role of Distinguished Engineer and CTO Mindset Apr 27, 2025 The future is bright Mar 30, 2025 2024 Reflections Dec 31, 2024 My giant follows me wherever I go Sep 20, 2024 Are developer jobs truly in decline? Jun 29, 2024 Some thoughts on recent RTO announcements Jun 22, 2023 One size does not fit all: neither cloud nor on-prem Apr 10, 2023 Should today’s developers worry about AI code generators taking their jobs? Dec 11, 2022 Working from home works as well as any distributed team Nov 25, 2022 Why you should question the “database per service” pattern Oct 5, 2022 Good developers can pick up new programming languages Jun 3, 2022 There is no such thing as one grand unified full-stack programming language May 27, 2022 Peloton could monetize these ideas if they only listen May 15, 2022 Good idea fairy strikes when you least expect it May 2, 2022 Best practices for building a microservice architecture Apr 25, 2022 TypeScript is a productivity problem in and of itself Apr 20, 2022 In most cases, there is no need for NoSQL Apr 18, 2022 A year of COVID taught us all how to work remotely Feb 10, 2021 Making the best of remote work - Coronavirus blues Mar 16, 2020 TDWI 2019: Architecting Modern Big Data API Ecosystems May 30, 2019 Using Markov Chain Generator to create Donald Trump's state of union speech Jan 20, 2019 The religion of JavaScript Nov 26, 2018 Let’s talk cloud neutrality Sep 17, 2018 Fixing the Information Marketplace Aug 26, 2018 What does a Chief Software Architect do? Jun 23, 2018 I downloaded my Facebook data. Nothing there surprised me. Apr 14, 2018 Nobody wants your app Aug 2, 2017 Node.js is a perfect enterprise application platform Jul 30, 2017 Design patterns in TypeScript: Chain of Responsibility Jul 22, 2017 Singletons in TypeScript Jul 16, 2017 Rather than innovating Walmart bullies their tech vendors to leave AWS Jun 27, 2017 Architecting API ecosystems: my interview with Anthony Brovchenko of R. Culturi Jun 5, 2017 TDWI 2017, Chicago, IL: Architecting Modern Big Data API Ecosystems May 30, 2017 Collaborative work in the cloud: what I learned teaching my daughter how to code Dec 10, 2016 Don't trust your cloud service until you've read the terms Sep 27, 2016 In search for the mythical neutrality among top-tier public cloud providers Jun 18, 2016 What can we learn from the last week's salesforce.com outage ? May 15, 2016 Why it makes perfect sense for Dropbox to leave AWS May 7, 2016 JavaScript as the language of the cloud Feb 20, 2016 OAuth 2.0: the protocol at the center of the universe Jan 1, 2016 Our civilization has a single point of failure Dec 16, 2015 IT departments must transform in the face of the cloud revolution Nov 9, 2015 What Every College Computer Science Freshman Should Know Aug 14, 2015 Ten Questions to Consider Before Choosing Cassandra Aug 8, 2015 On Maintaining Personal Brand as a Software Engineer Aug 2, 2015 The Three Myths About JavaScript Simplicity Jul 10, 2015 Book Review: "Shop Class As Soulcraft" By Matthew B. Crawford Jul 5, 2015 Attracting STEM Graduates to Traditional Enterprise IT Jul 4, 2015 Your IT Department's Kodak Moment Jun 17, 2015 The longer the chain of responsibility the less likely there is anyone in the hierarchy who can actually accept it Jun 7, 2015 Big Data is not all about Hadoop May 30, 2015 Smart IT Departments Own Their Business API and Take Ownership of Data Governance May 13, 2015 The Clarkson School Class of 2015 Commencement speech May 5, 2015 Building a Supercomputer in AWS: Is it even worth it ? Apr 13, 2015 Ordered Sets and Logs in Cassandra vs SQL Apr 8, 2015 What can Evernote Teach Us About Enterprise App Architecture Apr 2, 2015 Microsoft and Apple Have Everything to Lose if Chromebooks Succeed Mar 31, 2015 Software Engineering and Domain Area Expertise Nov 7, 2014 Wall St. wakes up to underinvestment in OMS Aug 21, 2014 Software Engineers Are Not Doctors Aug 3, 2014 Cassandra: Lessons Learned Jun 6, 2014 Java, Linux and UNIX: How much things have progressed Dec 7, 2010 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.