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Explore my work, engineering approaches, and technical notes. Looking for the machine-readable version? Open the XML sitemap or the AI reading index.

Explore the site

  • Home ↗
  • Professional experience ↗
  • Projects ↗
  • Services ↗
  • Engineering expertise ↗
  • Engineering notes ↗
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Engineering expertise

  • Backend API & Systems Engineering ↗
  • Data Pipelines & ETL Engineering ↗
  • RAG & AI Backend Engineering ↗
  • AWS Cloud & DevOps Engineering ↗
  • Full-Stack SaaS & Web Products ↗
  • Distributed Systems & Reliability ↗
  • Recommendation & ML Serving Systems ↗

Project case studies

  • Algorithms in Python and Java ↗
  • Document Q&A — building a retrieval system that knows when not to answer ↗
  • E-commerce data platform — from live events to trusted sales reporting ↗
  • Edge ML — splitting an autoencoder between a device and the cloud ↗
  • ESP32 temperature inference — proving the model/firmware contract ↗
  • Expiring URL service — designing a small API around explicit failure modes ↗
  • Fitter Health — owning a health-tech platform end to end ↗
  • ML foundations — reproducible experiments before model complexity ↗
  • Multilingual, multi-tenant RAG — isolation before intelligence ↗
  • Recommendation engineering — from raw ratings to a serving API ↗

Engineering notes

  • Reliable Webhooks & Background Jobs ↗
  • Tenant-Isolated RAG with pgvector ↗
  • Kafka, Spark & Airflow Pipeline Design ↗
  • Django, Next.js & AWS Application Delivery ↗
Saaim Abdullah© 2026 · Built with curiosity.
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