Sr. Data Engineer 🛠️| Baseball ❤️| ETL & Warehousing | Python Dev | @Medium Writer | Passionate ⚙ raw data ➡️ insights | Let's connect & explore data together!

Joined June 2009
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New Post: I just published Why #Python Data Engineers Are Switching to UV in 2026 (And How to Make the Switch) medium.com/p/why-python-data…

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Happy Monday for y'all Current status of a data analyst using Claude Opus 4.7 to add a Row ID to a heap table. #analytics #humor #ai
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Javier Montero retweeted
C# was designed by a 6-person team. Anders Hejlsberg(@ahejlsberg) - creator of C#, TypeScript, Turbo Pascal & Delphi - on the benefits of working collaboratively from the start: They worked in short sessions, regularly: “Early on, we decided that we want to have a team of people design this language, not just one. I was sort of the guy who ran the group of designers, but we put together a group of six people or so, and we got in a room three times a week for two hours and just started the design. Literally, let's start from the top." Language design is iterative on previous languages you’ve built: “These were all people who had built or worked on programming languages before and had seen all of the things you're supposed to do and all the things you're not supposed to do. And quite honestly, language design is 90% the same and 10% new for pretty much every language. Every language you build still has to have a compiler. The compiler is still built pretty much the same way. And of course as time marched on, people demand more and more. You have to have IDEs, you have to have frameworks… So there's a lot of experience you want to pull in, and there's a lot of work that you're doing that isn't really new, but every time around you try to fix the problems that you've been exposed to.” The team worked together for years and tested each other’s ideas vigorously: “This language design group worked together for years on end, and it was lovely to come into work with a new idea and then immediately have five or six people that you could sit down and have a deep discussion with without first having to spend an hour level setting. That worked really well because we could just jump right in and have two hours of technical discussion. Everyone was cognizant of, okay, if someone comes up with a new idea, now it's our job to try to shoot it down - what’s wrong with this idea? If it could stand the test of that, then it was probably a decent idea. And so that was kind of how we ran the design.”
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Better late than never! Happy Memorial Day for all who served!
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Javier Montero retweeted
🚨 We recently discovered that an unauthorized party obtained a token with access to the Grafana Labs GitHub environment, enabling the threat actor to download our codebase. (1/6)
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I've heard from colleagues in California that many are automating tasks with AI that don't add value or solve real problems. It's mainly just consuming tokens to complete sprint tasks, and managers see their AI credit usage.
The FT says that Amazon employees are doing random unnecessary task automations to consume tokens and to show their bosses that they're using AI more ft.com/content/8ee0d3ef-9548…
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Anyone can code and deploy apps to production without having knowledge. 😃😁 #ai
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📹New Video 📹 If you're eager to embrace new trends in analytics and data manipulation, this video is for you. Join me as I showcase four advanced functions in Python Polars that will empower you to work with large data frames. I recommend watching the video: youtu.be/XAmVstxZeGQ #programming #python #dataanalytics

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🚨 Spoiler Alert🚨 I'm excited to share my latest article on Medium, where I explore four advanced methods for using Polars in Python and highlight a new SQL feature that could persuade you to transition from Pandas. Check it out here: medium.com/@jmontero19/why-p… #technology #dataanalytics #analytics
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The Coinbase outage on Thursday is just a small hiccup compared to the exciting things on the horizon. #AI Remote Executions. 😳😳😳
Codex 0.130.0 is released. Highlights: - Added `codex remote-control` as a simpler entrypoint for starting a headless, remotely controllable app-server. - Plugin details now show bundled hooks; plugin sharing exposes link metadata and discoverability controls. - App-server clients can page large threads with unloaded, summary, or full turn item views. - Bedrock auth can now use AWS console-login credentials from aws login profiles. Complete details in thread ↓
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Javier Montero retweeted
May 7
Jensen Huang (CEO of Nvidia) : “Every engineer is going to have and manage 100s of agents” The future of work is managing and building ai agents This builder gave out the entire roadmap to become a 100x ai engineer in 2026 Bookmark this for the weekend
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Javier Montero retweeted
May 7
Introducing GPT-Realtime-2 in the API: our most intelligent voice model yet, bringing GPT-5-class reasoning to voice agents. Voice agents are now real-time collaborators that can listen, reason, and solve complex problems as conversations unfold. Now available in the API alongside streaming models GPT-Realtime-Translate and GPT-Realtime-Whisper — a new set of audio capabilities for the next generation of voice interfaces.
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Master these 10 essential concepts to become an exceptional Analytical Engineer with a strong AI background.
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🔦Tip🔦 As a senior engineer, I am concerned that the new developers are not thinking for themselves; they are delivering and deploying code that they do not understand. So, they are unthinkingly copying AI Code without knowing how it works, and they and their manager are happy that they cut shipping times to get into production. Those juniors deploying advanced code are not developing the instinct to guess, which is acquired through previous experiences, long troubleshooting sessions, or failed deployments. New developers who only deploy what is generated by AI get stuck when things fail because they lack developed instincts; they do not know the exact piece of code that fails, the root causes, or how to troubleshoot. An AI tool can help you move faster once you have that understanding. It cannot give you the understanding. An AI tool can assist you in working faster once you've grasped the concept, but it cannot provide that understanding itself. I'm not worried about my role as a senior; I am only concerned about what I'm seeing, with many developers falling into the trap of delivering more in less time, without understanding the know-how or learning what they are implementing. They are starting to play the headcount game. A good example is the layoffs at Coinbase, Fresh Foods, and Microsoft. #AI #TechLearningWeek #programming #jobs
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Non-technical teams delivering code in production. Wanna see how things are going within a year, probably Coinbase is becoming the Spirit Airlines of the crypto platforms. #ai #TechLearningWeek
This is an email I sent earlier today to all employees at Coinbase: Team, Today I’ve made the difficult decision to reduce the size of Coinbase by ~14%. I want to walk you through why we're doing this now, what it means for those affected, and how this positions us for the future. Why now Two forces are converging at the same time. We need to be front footed to respond to both. First, the market. Coinbase is well-capitalized, has diversified revenue streams, and is well-positioned to weather any storm. Crypto is also on the verge of the next wave of adoption, with stablecoins, prediction markets, tokenization, and more taking off. However, our business is still volatile from quarter to quarter. While we've managed through that cyclicality many times before and come out stronger on the other side, we’re currently in a down market and need to adjust our cost structure now so that we emerge from this period leaner, faster, and more efficient for our next phase of growth. Second, AI is changing how we work. Over the past year, I’ve watched engineers use AI to ship in days what used to take a team weeks. Non-technical teams are now shipping production code and many of our workflows are being automated. The pace of what's possible with a small, focused team has changed dramatically, and it's accelerating every day. All of this has led us to an inflection point, not just for Coinbase, but for every company. The biggest risk now is not taking action. We are adjusting early and deliberately to rebuild Coinbase to be lean, fast, and AI-native. We need to return to the speed and focus of our startup founding, with AI at our core. What this means To get there, we are not just reducing headcount and cutting costs, we’re fundamentally changing how we operate: rebuilding Coinbase as an intelligence, with humans around the edge aligning it. What does this mean in practice? - Fewer layers, faster decisions: We are flattening our org structure to 5 layers max below CEO/COO. Layers slow things down and create coordination tax. The future is small, high context teams that can move quickly. Leaders will own much more, with as many as 15 direct reports. Fewer layers also means a leaner cost structure that is built to perform through all market cycles. - No pure managers: Every leader at Coinbase must also be a strong and active individual contributor. Managers should be like player-coaches, getting their hands dirty alongside their teams. - AI-native pods: We’ll be concentrating around AI-native talent who can manage fleets of agents to drive outsized impact. We’ll also be experimenting with reduced pod sizes, including “one person teams” with engineers, designers, and product managers all in one role. In short: AI is bringing a profound shift in how companies operate, and we’re reshaping Coinbase to lead in this new era. This is a new way of working, and we need to leverage AI across every facet of our jobs. To those who are affected I know there are real people behind these decisions — talented colleagues who have poured themselves into this company and our mission. To those of you who will be leaving: thank you. You’ve helped build Coinbase into what it is today, and I am sincerely grateful for everything you've done. All impacted team members will receive an email to their personal account in the next hour with more information, and an invitation to meet with an HRBP and a senior leader in your organization. Coinbase system access has been removed today. I know this feels sudden and harsh, but it is the only responsible choice given our duty to protect customer information. To those affected, we will be providing a comprehensive package to support you through this transition. US employees will receive a minimum of 16 weeks base pay (plus 2 weeks per year worked), their next equity vest, and 6 months of COBRA. Employees on a work visa will get extra transition support. Those outside of the US will receive similar support, based on local factors and subject to any consultation requirements. Coinbase prides itself on talent density. Our employees are among the most talented people in the world, and I have no doubt that your skills and experience will be highly sought after as you pursue your next chapters. How we move forward To the team that is staying, I know this is a difficult day. We’re saying goodbye to colleagues and friends you've been in the trenches with. But here’s what I want you to know as we move forward together: Over the past 13 years, we have weathered four crypto winters, gone public, and built the most trusted platform in our industry. We’ve made it this far by making hard decisions and by always staying focused on our mission. This time will be no different – nothing has changed about the long term outlook of our company or industry. And most importantly, our mission has never been more important for the world. Increasing economic freedom requires a new financial system, and we’re building it. The Coinbase that emerges from this will be more capable than ever to achieve our mission. Brian
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Companies that allow anyone with access to the database to connect IA agents for querying are opening Pandora's box. This approach often leads to raising tickets and claiming that a table or database has been deleted. Let's work together to ensure your #data access practices are secure and efficient!
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Who needs a GPT or Meta lens for the metaverse when you can enjoy the most immersive experience right from your cozy sofa simulator? 🛋️ 😅😅😅
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