Journal

Writing from the studio floor.

Engineering notes, case post-mortems and the occasional opinion from the people building these systems.

AI / ML
AI / ML

RAG without vibes: building eval harnesses that clinicians trust

Retrieval-augmented generation is easy to build and hard to make trustworthy. This is how we approached eval for Helio Health's triage assistant.

Dmitri Moroz · Oct 28, 2025
Engineering
Engineering

Rust in production: when the complexity tax pays back

We reached for Rust on two projects last year. One was the right call. One wasn't. Here's the decision tree we now use.

Lakshmi Bhat · Oct 14, 2025
Engineering
Engineering

The boring stack: why we keep choosing Postgres

Every year someone suggests a new database. Every year we end up back at Postgres. This is a love letter and a technical argument.

João Ribeiro · Sep 30, 2025
Mobile
Mobile

Mobile performance on a budget: lessons from 2.1M downloads

Glasswork's React Native app has 4.8★ with 2.1 million downloads. The performance work started on day one and never stopped.

Priya Rao · Sep 16, 2025
Operations
Operations

SOC 2 from scratch: what the audit actually checks

We went through SOC 2 Type II with NovaPay. The auditors care about far fewer things than the compliance frameworks suggest — and they care deeply about those things.

Tobias Frank · Sep 2, 2025
Blockchain
Blockchain

On-chain governance that doesn't require a PhD

Most governance systems are brilliant in theory and unused in practice. We've shipped three. Here's what the users actually engage with.

Sara Kohli · Aug 19, 2025
AI / ML
AI / ML

Fine-tuning vs RAG: a practical decision tree for 2025

The question comes up on every AI engagement. After eight production deployments, we have a clearer answer — and it's usually RAG with a twist.

Dmitri Moroz · Aug 5, 2025
Process
Process

How we run retros: short, specific, done in 20 minutes

The standard retrospective format is too long, too vague, and produces action items nobody owns. Here's what we do instead.

Mariana Jardim · Jul 22, 2025
Engineering
Engineering

Architecture Decision Records: the documentation that actually gets read

We've shipped ADRs on every project since 2021. This is the format we settled on and why the two-pager beats the 20-pager.

Ana Costa · Jul 8, 2025
Monthly · Newsletter

Engineering notes, monthly.

One email a month. Long reads, case notes, and the occasional technical opinion. No marketing.