@oziomaochin
About
Senior Backend Engineer with 5+ years building and scaling production systems in Java and Spring Boot.
I write about architecture, system design trade-offs, and the failure modes most documentation ignores. No fluff — just practical, experience-driven engineering insights.
Open to senior backend and technical writing opportunities.
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Ozioma Ochin's blogs
Recently published
Building a Semantic Search API with Spring Boot and pgvector - Part 3: The Embedding Layer.
Mar 20 · 11 min read · Most semantic search tutorials treat embeddings as a single line of code — call the API, get a vector, store it. In practice, this is the part of the system where the most subtle bugs live. Not the ki
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Building a Semantic Search API with Spring Boot and pgvector - Part 2: Designing the PostgreSQL Schema
Mar 13 · 14 min read · Why the database layer matters In a semantic search system, the database schema isn’t just storage. It defines how embeddings are stored, indexed, and queried. Many tutorials treat the database as a d
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Building a Semantic Search API with Spring Boot and pgvector - Part 1: Architecture
Mar 5 · 11 min read · The problem with Keyword Search Keyword search breaks more often than most engineers realize. A few months ago, I was building an internal document management tool. Users could upload policy documents
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