Engineering Blog — Systems, Data & Architecture

Technical deep-dives, systems architecture, and open-source postmortems by Aritro Saha, Software Engineer 1 at Bristol Myers Squibb.

Building Sub-50ms Zero-Disk Screen OCR with Swift 6 & Apple Vision Framework

Published: 2026-10-20 | Reading Time: 6 min read | Category: macOS Engineering

How to architect an in-memory macOS screen OCR pipeline using Swift 6, NSPasteboard, and Apple Vision VNRecognizeTextRequest with zero temporary disk writes.

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Architecting Zero-Crash Batch Data Pipelines with Python Dead-Letter Queues (DLQ)

Published: 2026-10-24 | Reading Time: 8 min read | Category: Data Engineering

Eliminate pipeline crashes at record #5,247. A deep dive into implementing fault-tolerant Python loops, atomic error serialization, and surgical CLI replays.

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Achieving 0ms Perceived Navigation in Vite & React 19 with W3C Speculation Rules

Published: 2026-10-28 | Reading Time: 5 min read | Category: Web Architecture

How to upgrade traditional SPAs into instant-navigation platforms using modern W3C Speculation Rules, React 19 SSG prerendering, and Core Web Vitals optimization.

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