Oskar Wichtowski - AI Engineer & Fullstack Developer

Insight & Articles

My thoughts on artificial intelligence, software design patterns, and rigorous testing methodologies.

Jul 1, 202612 min

Testing AI Services at Scale with Playwright — A Practical Guide

How we built a layered integration testing strategy for a multi-service AI platform using Playwright's API testing, contract-driven test data from S3, evaluation metrics with percentage failure thresholds, and a Friday-to-Monday batched indexing verification workflow.

Jun 26, 20266 min

#serverless#cloud

Serverless Is a Lie and We All Just Agreed to Pretend

A rant about how 'serverless' still runs on servers — they're just someone else's servers, and you're still paying for them.

Jun 25, 202610 min

#AI#Cloud

How We Indexed Over 300,000 Scientific Papers with a Serverless AI Pipeline

How we rebuilt a serverless AI pipeline for indexing 300,000+ scientific papers — with OCR, chunking, figure enrichment, embeddings, retries, and cost-aware re-indexing.