Posts by Luis Cruz

@Luis Cruz

Luis Cruz

Senior AI Engineer | LLM & Agentic AI | Full Stack
Development Team topstar-ai-github-io.vercel.app Joined May 2026
3.3k Points62 Badges56 Connections57 Followers59 Following

Posts by Luis Cruz

Luis Cruz in Articles 1 min read
A hands-on comparison of three AI presentation tools — Claude Design, Microsoft Copilot in PowerPoint, and Gemini in Google Slides — tested against the same complex, real-world prompt for a financial planning deck. Gemini finished last due to its one...
Luis Cruz in Articles 1 min read
Most AI demos are impressive for 30 seconds… then fall apart when you try to use them for real work. So I built something different: https://topstar-ai.github.io/play This is a live AI playground focused on: structured outputs multi-step workflo...
Luis Cruz in Articles 1 min read
I am a team leader at a software engineering firm and also a business owner. I’m currently looking to connect with a motivated Latin candidate for a monthly paid position within our team. This is a non-technical role, although any technical skills ...
Luis Cruz in Articles 1 min read
daily.dev handed me a "Top Reader" badge for the Stripe topic this month, which is mostly the platform politely telling me I have a problem. But the upside: it forced a pattern I now build around — every Stripe webhook handler has to be idempotent, b...
post-cover-19421
Luis Cruz in Articles 1 min read
https://github.com/pyfenn/fenn/issues/98 Fenn is a Python tool for tracking ML training/session logs the .fn format, and the maintainer just opened a coordination issue inviting new contributors to improve the Flask-based dashboard. I claimed a sub-...
Luis Cruz in Articles 2 min read
Fenn is an open-source Python tool for tracking machine learning training sessions — it produces .fn session logs and ships with a lightweight Flask dashboard for exploring them. The maintainer just opened a broad coordination issue #98 inviting new ...
Luis Cruz in Articles 1 min read
daily.dev ran a 3-day hackathon May 20–23, 2026 opening up their Public API. I built Dev Wrapped — Spotify Wrapped, but for your daily.dev reading history. This post walks through how I shipped it, what choices I made, and what I'd do differently. L...
Luis Cruz in Articles 3 min read
Member portals look simple from the outside — log in, see your benefits, update your profile. The complexity is in the small things: session lifetimes, entitlement freshness, privacy compliance, and the fact that the people using it are members, not ...
Luis Cruz in Articles 4 min read
A couple of years ago I was hired as the solo backend engineer to build the production backend for an AI product company from scratch. No legacy code, no existing schema, no team to defer to — just a frontend team waiting on an API and a product team...
Luis Cruz in Articles 3 min read
One of the better ways to learn a stack is to take a working app and rebuild it your way. I forked CoverLetterGPT — an open-source AI cover letter generator originally built by Vince Loewe as a flagship example app for the Wasp framework — and used i...
Luis Cruz in Articles 1 min read
Chess engines sit at a fun intersection — they're a classic AI problem with decades of refinement, but they're also a playground for modern techniques. I wanted to build something that respected the old guard Stockfish-style search while leaning on n...
Luis Cruz in Articles 1 min read
Just finished building a custom tool that turns Google Sheets into a programming workspace for CrossFit coaches. No more clicking through the Wodify admin UI one workout at a time. What it does: Bulk uploads an entire week of programmed workouts fr...
post-cover-17910
Luis Cruz in Articles 1 min read
Everyone wants to blame the model. "GPT-4 is hallucinating." "Claude isn't following instructions." "The embeddings are bad."Nine times out of ten, it's the chunks.I've been auditing RAG pipelines lately and the same patterns keep showing up:Fixed-si...
Luis Cruz in Articles 1 min read
Full eCommerce platform https://ceilinganddryliningsupplies.co.uk A full eCommerce platform for the construction and building materials industry focused on performance, scalability, and user experience. My role included: Full-stack development Sto...
Luis Cruz in Articles 1 min read
AI Automation and Agents Developer building intelligent systems and modern web applications. Passionate about machine learning, deep learning, and creating next-gen autonomous agents. I am a self-taught AI Automation and Agents Developer from Remote...
post-cover-17440
Luis Cruz in Articles 1 min read
https://github.com/topstar-ai/OpenLLM https://bentoml.com Run any open-source LLMs, such as DeepSeek and Llama, as OpenAI compatible API endpoint in the cloud. !https://coderlegion.com/?qa=blob&qablobid=8591791232814553939 ...
chevron_left

Latest Jobs

View all jobs →