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What are Forward Deployed Engineers, and why are they so in demand? (2025)
Startups and scaleups are on a hiring spree for a software engineering role pioneered by Palantir. A deepdive into this role, and why FDEs are so popular in 2025
New
The latest blog posts to take off on Hacker News. 21,815 posts.
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Building and shipping Mac and iOS apps without opening Xcode
Stop looking at Xcode. It's not fun. Unless it is! In which case, do it!
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The art and engineering of Sega CD Silpheed
The 90's was a decade of considerable improvement in the world of video-game consoles [1] . Each new model brought advanced processing power and better graphics without compromise.
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Precursor
Precursor, our new continuous behavioral validation engine for bot management, offers visibility into how humans and bots actually interact across the full user journey. By turning session-level behavior into bot detection signals, it identifies advanced automation with higher precision — while reducing friction for…
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Quadrupling code performance with a "useless" if
So I was optimizing a domain-specific compressor the other day, as one does. One important problem was chunking the input string and optimally choosing the most compact encoding for each chunk (different encodings compress different characters better, so where to split is not immediately obvious). The previous post…
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Backtrack-Free Cursive
Making English more enjoyable to write.
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Old and new apps, via modern coding agents
I have been interested in machine-assisted ways to do and teach mathematics from as far back as 1999, when I started coding several applets in Java 1.0, both for my complex analysis and linear alge…
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G# – A modern .NET language with Go, Kotlin, and Swift ergonomics
Meet G#: expressive data types, explicit nullability, and structured concurrency on .NET. Explore real examples and run your first project.
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Your code is fast if you're lucky
Recently, while working on an optimized Quicksort implementation, I came across a rather interesting quirk. Modern compilers (especially Clang) optimize loops using fast, branch-free instructions - provided you use the right programming style.
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My two year old taught me constraint solving
My two-year-old son used a Brio wooden train set to explain constraint solving to his silly Dada.
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Why write code in 2026
A bunch of reasons to write code in 2026
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Write code like a human will maintain it
One of the best things about LLMs is that they'll write code for you, all day long. Who cares about DRY? You don't have to be the one updating the same long con...
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After 7 years in production, Scarf has reluctantly moved away from Haskell
After 7 years in production, Scarf has reluctantly moved away from Haskell — Avi Press
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Good Tools Are Invisible
TL;DR: A good tool is and ought to be invisible—striving to make such tools is the goal of a toolmaker.One habit I see a lot, and have to push back on, is taking a tool's shortcomings and reselling them as a "puzzle game" which is "fun" to solve.I don't want my tools to be "fun". I want my tools to be invisible.Text…
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In Emacs, everything looks like a service
A common refrain is that Emacs is an operating system (OS). This isn’t true, but what invites comparison to an OS is its ability to orchestrate applications and utilities above the OS kernel...
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Building a real-time AI tutor for 5-year-olds
We set out to build the first AI tutor to teach math and reading to kids ages 4-9. For AI to actually teach a five-year-old, pedagogy must be baked into the engineering. A child can't wait for a slow reply, can't read a chat interface, and can't unhear anything a model gets wrong. We wanted to share some of the…
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I Did Not Kill Stanley Lieber: How to Draw (With 9front)
the computer lied
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My thoughts on the Bun Rust rewrite
When Jarred joined the Zig community about 5 years ago, I described him as someone who had strong "beginner energy". That is, he moved fast and tried a lot of different stuff, jumping head first into problems that he was not yet equipped to solve, leading to mediocre outcomes in terms of engineering, but learning a…
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AI changes the economics of software rewrites
AI changes rewrite economics because codebases with clear, common patterns get more leverage than proprietary or inconsistent systems.
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Rewriting Bun in Rust
Why & how we rewrote Bun from Zig to Rust
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Benchmarking coding agents on Databricks' multi-million line codebase
Databricks shares results from its internal coding benchmark, evaluating coding agents on a multi-million line codebase to optimize engineering cost and performance.
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Separating signal from noise in coding evaluations
A new analysis from OpenAI reveals issues in SWE-Bench Pro, a popular coding benchmark, raising concerns about reliability and accuracy in evaluating AI models.
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SWE-1.7 Reach Near GPT 5.5 and Opus Intelligence
Today, we’re launching SWE-1.7, the most capable model we’ve trained so far. It reaches frontier-level intelligence at a much lower cost, advancing the…
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TypeScript 7
Today we are proud to announce the availability of TypeScript 7, a 10x faster native port of TypeScript! Since its early days, TypeScript has promised to
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Chatto is now open source
The snappiest chat application you've ever used is now available for self-hosting.