LatestEngineering
How to build a private knowledge chatbot
A high-level architecture for building a private knowledge chatbot with Python, FastAPI, React, Supabase, retrieval, citations, model APIs, and a full implementation path.
Blog
Field notes
Guides and essays for people building AI systems, growing technical skills, and finding freelance work.
Career
How to build an AI SaaS: the service-to-software ladder
How to build an AI SaaS without external funding. Get paid to solve one company's painful problem, productize it for three to five similar customers, then go self-serve.
Engineering
How to protect your projects from supply chain attacks
Supply chain attacks hit axios, TanStack, and PyPI this year. Three package manager settings in uv and pnpm, exact version pins, a dependency cooldown, and locked installs, close the main attack paths.
Career
From data science to AI platform engineering
A transition guide for data scientists moving from notebooks and models to production AI systems with APIs, workers, evals, deployment, and ownership.
Career
How to become a freelance AI engineer
Learn how to become a freelance AI engineer by building practical AI projects, choosing a service offer, finding clients, pricing work, and moving toward long-term contracts.
Career
How to become a freelance machine learning engineer
A practical roadmap for machine learning engineers who want to freelance by deploying models, building ML APIs, improving evaluation, and finding client projects.
Career
How to become a freelance software developer
A practical guide for software developers who want to freelance, find first clients, scope projects, set rates, and build a sustainable technical client pipeline.
Career
How to become a freelance data scientist
A practical guide for data scientists who want to freelance, find first clients, package services, price projects, and turn analytical skills into paid client work.
Career
How to become a freelance data engineer
Learn how data engineers can start freelancing by packaging pipeline, warehouse, automation, data quality, and analytics infrastructure work into paid client projects.
Data
How to build hybrid search for RAG
Hybrid search for RAG combines BM25, dense embeddings, reciprocal rank fusion, reranking, and retrieval evaluation so your system retrieves better evidence.
Career
How to become a freelance data analyst
Learn how data analysts can start freelancing with dashboards, reporting automation, KPI cleanup, business analysis, and practical client acquisition strategies.
Data
How to build agentic RAG in pure Python
Build agentic RAG from scratch with three file tools that list, grep, and read. The same loop coding agents run, applied to your own knowledge, plus the production hardening that makes it hold up.