13 posts · 6 companies · newest first
In 2026, Kotlin turned fifteen. Over those fifteen years, Kotlin has built a mature ecosystem, been adopted by companies around the world, and established a large and active developer community. Fifteen years is long enough to understand which technology trends lasted and which didn’t. This report looks back at Kotlin’s first fifteen years to see […]
Here’s a function that signs a document: In Kotlin, Unit means the function completes without returning a meaningful value – roughly equivalent to void in Java. Got it? Now, tell me what could go wrong. You can’t. Yet, the code might be invalid. The signing window might have closed. The database might be down. The […]
Something is happening in server-rendered web development. React shipped Server Components. HTMX made “hypermedia” cool again. Phoenix LiveView proved a server can push interactive UI updates without a client framework in sight. Every ecosystem seems to be rediscovering the server as a place to render UI, except one: the JVM. What if Compose, the UI […]
This tutorial was written by an external contributor. APIs are frequent targets for bad actors since they expose data and functionality. Securing them while maintaining usability is often one of the most challenging and time-consuming parts of API development. OAuth 2.0 and JSON Web Tokens (JWT) help make these processes more manageable and reliable. They […]
In early 2023, Slack faced a foundational challenge: serving Large Language Models (LLMs) at enterprise scale with the security, reliability, and performance our customers expect. Over three years, we evolved from basic infrastructure to orchestrating a sophisticated multi-cloud architecture. We didn’t just want shiny new models; we needed a system resilient to regional outages and…
At Wealthfront, the “tech” in financial technology isn’t just a buzzword—it’s the foundation of everything we build. Beneath the intuitive frontend our clients interact with lies a complex ecosystem of distributed systems. One of the most critical pieces of that backend architecture is the engine that enables us to route massive volumes of trades efficiently. ... Read more
Engineering at Wealthfront is centered on the idea that code should be written to facilitate testing, not the other way around. Without a staging environment to fall back on, we maximize confidence through a sophisticated, multi-layered testing strategy. While unit tests provide our most rigorous line of defense, our Integration Server is the workhorse that... Read more
Introduction 🔔 At Slack, notifications are how teams stay in the loop, but they can also become overwhelming when not designed with intention. Our goal was to make staying informed feel effortless. We set out to rebuild one of Slack’s most complicated systems from the ground up by bringing calm, consistency, and clarity to the…
Ever been here before? Stuck with a job that needs to be continually revisited because its performance gets worse with every passing day, and each attempt at improving said performance yields diminishing returns? This is the situation we found ourselves in with the portfolio balance calculation system—the code responsible for aggregating data from multiple sources... Read more
When I joined Medium, it was because I still believe in the internet as a place for ideas. Not noise, not outrage, but content that connects people through shared curiosity.Medium’s mission is to deepen understanding and spread ideas that matter. We’re building the best place for reading and writing online: A space that rewards clarity, authenticity, and craft over clickbait and engagement hacks.That vision only works if the technology beneath it is as thoughtful as the writing above it. That’s where you come in. Yes, you!Photo by Yannick Pulver on UnsplashThe RoleWe are starting the search…
Qualitative comparison of image embedding models to power a scalable similar-image replacement system for Canva designs.
Let’s start with a beautiful quote, which also can act as a great summary of what I want to share: “If you need a readme.md explaining how to build a project, you already failed” – Eelco Dolstra With this in mind, try to think back if you ever tried to follow along in a tutorial […]
We all love reading about the latest software developments trends and buzzwords but they can often turn out to be just that, buzzwords. For us at Small Improvements, Domain Driven Design (DDD) has really lived up to it’s own hype though and helped us build better software, faster and fewer bugs to boot. Do we have […]