Hi, I'm Leni.

I lead engineering on real-time distributed systems. I write about what worked, what didn't, and the numbers behind both.

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Currently writing about

🤖 AI in engineering, measured

What changes when an agent becomes the daily driver. Throughput, cycle time, change-failure rate — with their caveats.

📺 Real-time streaming platforms

20 months building a platform for real-time quality analysis of video streams. Event-time semantics, the consistency boundary, the bugs that don't show up until production.

⚖️ Engineering judgment

Build vs buy, instrument-before-you-rollout, when to defer. The decisions that don't make it into postmortems but should.

📐 Architecture & infrastructure

Terraform at a startup, schema evolution, the database choices you regret six months later.

Latest

What AI actually changed in 20 months of building a real-time video stream quality platform

PR throughput grew 5.7× at flat review latency through a 4× team expansion. AI co-authorship went 0 → 53% of commits. But the middle window is where the real story is — and change-failure rate doubled.

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