AI Engineer & Writer

I build AI systems that actually make it to production, and write about what I learn along the way.

From data pipelines to deployed models and automated workflows, I help teams and founders use AI for real outcomes, without the hype.

Sara Nóbrega
4+ yearsshipping AI & ML to production
15+ articlespublished on Towards Data Science & Medium
3.5k+ readersevery month on my newsletter, Learn AI

What I do

Two sides of the same craft

I spend my days building AI systems, and a good part of my nights writing honestly about how that work really goes.

Engineer

AI systems & automation, end to end

I design, build, and deploy AI solutions, LLM-powered agents, workflow automation, ML pipelines, with the unglamorous parts handled: monitoring, reliability, documentation, handover.

See how I can help →

Writer

Grounded writing about AI that works

Most AI content runs on hype. I write about tradeoffs, limitations, and what actually holds together in production, for tech professionals, data scientists, and founders who'd rather understand AI than just be impressed by it.

Explore my writing →

Recent work

A few things I've built

LLM-powered AI agent for knowledge & communication

Teams struggled to keep up with context spread across emails, Slack, and tools. I built AI agents that summarize conversations and documents, generate documentation automatically, and surface insights where teams already work. Result: less information overload, faster onboarding, documentation that stays current without manual effort.

Workflow automation for business operations

Manual processes across sales, scheduling, and coordination were creating bottlenecks. I built automated lead qualification and routing, email and calendar workflows triggered by business events, and end-to-end automation using low-code tools where it made sense. Result: fewer manual steps, faster response times, processes that scale without extra headcount.

More success stories →

"She built an impactful automation that connects Trello, Google Sheets, and Notion to help us track and summarize data quality fixes with zero manual effort. It saves time, improves transparency, and keeps everything centralized for the team. Both systems were thoughtfully built, well-documented, and delivered with strong attention to detail."

Client, workflow automation project · April 2025

Let's build AI together.

A free 30-minute call to talk through your challenge, no pitch, just an honest look at whether AI can solve it and how.

About me

From staring at the stars to shipping AI systems

As a kid, I was obsessed with space. Documentaries, books, the whole thing. So I did the very on-brand nerd move and studied physics, then astrophysics, at the University of Lisbon.

Somewhere along the way I realized the part I loved most wasn't the stars themselves, it was taking messy data and pulling a real conclusion out of it. That pulled me toward data science, which honestly felt like physics with a different dataset.

Then I got curious about what happens after the model works in a notebook. How do you deploy it? How does the whole end-to-end thing actually hold together in production? That question turned me into an AI engineer, and I haven't looked back.

Since then I've built and shipped AI in very different settings: computer vision and NLP research in Berlin, anomaly detection in Amsterdam, large-scale forecasting and ML pipelines at one of Europe's biggest energy companies, and today, production AI services, owning everything from data ingestion to deployment and monitoring.

Alongside the engineering, I write. I've published 15+ articles on Towards Data Science and Medium, and I run Learn AI, a newsletter read by 3,500+ people every month. My angle is simple: I'm genuinely excited about AI, I build with it every day, but the most useful thing I can do is stay grounded. I care about what AI can do and about the tradeoffs, the costs, and how to use it well anyway.

If that sounds like your kind of approach, I'd love to hear what you're working on.

Sara at a waterfall

At a glance

  • 🎓 MSc in Physics, University of Lisbon
  • 🛠️ 4+ years building production AI & ML
  • 🤖 LLMs, agents, MLOps, automation
  • ✍️ 15+ articles on Towards Data Science
  • 📬 3.5k+ monthly newsletter readers
  • 📍 Based in Lisbon, working worldwide
  • 🗣️ Portuguese, English, Spanish

Curious whether we'd work well together?

The fastest way to find out is a quick conversation.

Book a free discovery call

Services

How I can help

Every engagement starts the same way: understanding the problem before proposing the tool. Here's the kind of work I do best.

Consulting

AI & automation strategy

Not sure where AI fits in your business, or whether it fits at all? We map your processes, find the real opportunities, and scope what's worth building. I'll also tell you what not to build.

Building

End-to-end AI systems

LLM-powered agents, workflow automation, ML pipelines, designed, built, deployed, and documented. From data ingestion to monitoring, delivered as something your team can actually own.

Mentorship

AI career & project guidance

1:1 mentorship for data scientists and tech professionals moving toward AI engineering and MLOps, or for anyone who needs an experienced sounding board on an AI project.

Success stories

Real problems, real outcomes

Logistics optimization

Problem: ML models needed to be deployed, monitored, and maintained reliably.

  • ML services deployed via APIs
  • CI/CD pipelines for training and deployment
  • Monitoring and experiment tracking

Outcome: reduced manual deployment, improved reliability and reproducibility, clear ownership of the ML lifecycle.

Automating internal & external collaboration

Problem: manual coordination across files, emails, and collaborators.

  • Automated workflows for asset sharing
  • AI-assisted email handling
  • Clear handoff processes for teams

Outcome: less manual coordination, faster turnaround, clear documentation for scaling.

LLM-powered AI agent for knowledge & communication

Problem: teams struggled to keep up with context spread across emails, Slack, and tools.

  • AI agents for summarizing conversations and documents
  • Automated documentation generation
  • Integrations surfacing insights where teams work

Outcome: reduced information overload, faster onboarding, consistent documentation without manual effort.

Workflow automation for business operations

Problem: manual processes across sales, scheduling, and coordination created bottlenecks.

  • Automated lead qualification and routing
  • Email and calendar workflows triggered by business events
  • End-to-end automation with low-code tools where appropriate

Outcome: fewer manual steps and errors, faster response times, processes that scale without extra headcount.

Testimonials

What clients say

"Working with Sara over the last few months has been incredibly valuable. She built an impactful automation that connects Trello, Google Sheets, and Notion to help us track and summarize data quality fixes with zero manual effort. She also developed an email categorization system that significantly improved our inbox management. Both systems were thoughtfully built, well-documented, and delivered with strong attention to detail. I'd highly recommend working with Sara if you're looking to automate workflows and remove manual overhead from your team."

Client, automation project · April 2025

"Sara is a fantastic Data Scientist and her communication and speed of delivery was impeccable."

Client, data science project

"Sara is very knowledgeable and helpful. She helped set up a plan that I could communicate to other developers, that was very helpful and kind."

Client, AI strategy engagement

Have a challenge in mind?

Bring it to a free 30-minute call. We'll look at your specific situation, outline possible solutions, and discuss what implementation could look like.

Book a free discovery call

Products

Things I've built that you can use

Tools that started as client work and turned out useful enough to share.

Investment Tracking Dashboard

A clean, read-only dashboard to track your tickers and portfolio in one place. It doesn't buy or sell anything, it gives you a clear, always-current view of what you hold and how it's doing.

I originally built this for a client who wanted to stop juggling spreadsheets and broker tabs. If that sounds familiar, there are two ways to get it:

Just the code

For developers & tinkerers

  • Full source code of the dashboard
  • Setup documentation
  • You connect your own data sources and deploy it your way
Get in touch
Also

Learn AI, Premium

My newsletter's premium tier includes exclusive deep dives on AI tools and agentic systems, tested prompt and automation playbooks, hands-on frameworks to go from idea to working AI workflow, and 1:1 mentorship access.

Learn more on Substack →

Not sure which option fits?

Tell me what you're trying to do and I'll point you in the right direction, even if the answer is "you don't need this."

Book a free call

Writing

Grounded writing about AI

Most AI content runs on one loop: more, bigger, faster. I take a different angle, I write about what AI can do and the tradeoffs, the limitations, and how to use it well anyway.

15+ articles published on Towards Data Science and Medium · 3.5k+ monthly readers on Learn AI

📬 Learn AI, the newsletter

Practical notes on shipping AI to production, MLOps quick wins, mini case studies from real projects (what broke, what worked, what I'd do differently), and career reflections for data scientists moving toward AI engineering.

Subscribe on Substack

✍️ Towards Data Science & Medium

Longer-form technical articles on LLMs, time-series analysis, agentic AI, and the realities of AI engineering, read and shared by practitioners worldwide.

Read on Medium

Featured articles

A few recent pieces

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