Sumiya

I posit that success in engineering relies not just on technical proficiency, but on four enduring human behaviors - the A-B-C-D framework - that drive long-term growth and adaptation.

A deep dive on how I used Kiro, an agentic IDE, to ship a usable version of a personal tool for retail option trading.

AI-generated overview of an arxiv paper about Massively Decomposed Agentic Processes (MDAPs).

I built a free, privacy-first options trading analytics tool that runs entirely in your browser. Just upload your trade history CSV and instantly see your real win rates, strategy performance, and P&L trends without your data ever leaving your machine.

"Why use GenAI when it hallucinates?" My answer: it depends. Last week I used an AI agent to upgrade our production service to JDK 21 in 30 minutes - an experiment that would’ve rotted on our backlog otherwise.

A visual summary of DynamoDB outage and what lessons can we learn from it.

I asked the robots about parallels between today’s AI transformation and the spreadsheet revolution of the 1980s-90s using a set of questions. The questions are mine, but this post was entirely generated using AI (Claude and ChatGPT). You can almost see the AI shifting its responses as it pattern matches my line of questioning to what it thinks is an acceptable response to me.

Imagine you’re leading a high-performing team when one person approaches you with this proposal: "Give me a 5% raise, and I’ll deliver 10% more value." Sounds straightforward, right? But then you realize you have two other equally excellent performers. Read on as I grapple with this thought experiment.

I kept trying, the model kept trying, we succeeded quite quick before we went nowhere, and we both kinda at the same time thought to call it a day. Read a short snippet of how it unfolded.

Accountability matters. Without it, we can’t improve. But accountability should focus on learning, not punishment. Some ideas on how to think about post-failure action items.

I asked NotebookLM to generate an audio summary of my blog My Theory of Improvement for Software Engineering Teams.

I write about the missing piece in feedback conversations that would have helped me and may help others.

…​ in which I list books I read and some podcasts I listened to in 2024.

I write about my personal framework I use to build and maintain a high performance software engineering culture.

A summary of new features I recently added to my site amazonoraws.com: filtering AWS products by year, and an aggregated feed of AWS news from across the web.

This page describes how I set up my Json Path Evaluator tool (available here: https://sumiya.page/jpath.html)

Latency Metrics for a couple of Java Runtime based AWS Lambdas

List of Java versions and the features released in the corresponding versions

Build a slimmed and enhanced JRE and use it as a custom runtime for AWS Lambda, using gradle and docker

Some thoughts after having used Kubernetes in production.

A war story of how I went from knowing nothing about Terraform and Kubernetes to successfully completing a migration off from Cloudformation and EC2 into Terraform and EKS.

My experience after having learnt and used Scala for six months.