Federico Ramallo spotlights extraordinary people, their great stories and remarkable talent that's reshaping our world! Powered by Density Labs - https://densitylabs.io
Prevetted Podcast
Claim This Podcastby Federico Ramallo
5.0(2 reviews)
166 episodes
Updated Daily
Accepts GuestsHas Sponsors
37
Podcast Authority
BetaPoorBased on show quality, social media presence, reviews, charts, and more
Quality48
Social0
YouTube68
Engagement0
Podcast Overview
Federico Ramallo spotlights extraordinary people, their great stories and remarkable talent that's reshaping our world! Powered by Density Labs - https://densitylabs.io
Language
🇺🇲
Publishing Since
8/29/2023
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37
Podcast Authority
BetaPoorBased on show quality, social media presence, reviews, charts, and more
Quality48
Social0
YouTube68
Engagement0
7
Excellent Areas
1
Good Performance
11
Growth Opportunities
excellent
Episode Length
47 minutes
Performing excellently!
good
Show Experience
42 episodes over 2.0 years
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needs improvement
Publishing Consistency
Every 18 days
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Recent Episodes
July 27, 2026
#164 Rails Core to Independent Consultant: Kasper Timm Hansen on Ruby, Testing, and Craft
Kasper Timm Hansen is an independent Rails consultant and member-owner of the Spinel co-op, and six years on the Rails Core team taught him that open source is not about getting your code merged. It's about the right code at the right time, and what you learn on the way there. In this PreVetted Podcast episode, Kasper traces the path from a 2013 Google Summer of Code project to committer to Rails Core, and what he tells engineers who find contributing to open source too intimidating to start.<br><br>Kasper gets concrete on the engineering-efficiency work he does now. He explains why slow test suites are the tax most growing Ruby on Rails apps quietly pay, how associated objects pull behavior out of God objects to keep domain models clean, and why he seeds test and development data from the same recipes, using his Oaken library, so you debug the story you already know.<br><br>He also walks through "riffing," his scratch-file design method for exploring a problem before generating a single line of code, and rv, the Ruby version manager he built inspired by Python's uv that installs Ruby in about a second. The conversation closes on Rails 8 and what's next for Ruby.<br><br>About Kasper Timm Hansen:<br>- https://kaspth.com<br>- https://spinel.coop<br><br>About Federico Ramallo<br>Founder of Density Labs, the AI Engineering Partner for the mid-market, helping US companies ship AI to production, backed by a decade of shipping software with distributed engineering teams. Author of The Invisible Distance, the operating system for engineering leaders running teams across borders. Host of The PreVetted Podcast: 150+ conversations with VPs of Engineering, CTOs, and operators on what actually works.<br>- 💼 https://www.linkedin.com/in/framallo/<br>- 🌐 https://densitylabs.io<br>- ✅ https://prevetted.ai<br><br>🎙 PreVetted Podcast<br>- 🎯 https://prevetted.ai/podcast<br>- 🐦 https://x.com/PrevettedPod<br>- 🔗 https://www.linkedin.com/company/prevetted-podcast<br><br>TIMESTAMPS:<br>0:00 Introduction to Kasper and his work<br>5:12 Why a co-op, and what changes when everyone is an owner<br>12:53 The road to the Rails Core team<br>18:18 Advice for new open source contributors<br>21:56 Where Rails teams actually get stuck<br>24:47 Domain modeling and associated objects<br>27:35 Fixtures, factories, and Oaken<br>32:55 Rails 8 and what is next for Ruby<br>33:36 Riffing: designing before you generate<br>43:02 rv: installing Ruby in a second<br><br>#RubyOnRails #OpenSource #SoftwareEngineering
July 24, 2026
#163 Why AI Agents Are Tools, Not Junior Engineers: Vasu Raj Jain on Staying Technical as a Leader
<p>Engineering leadership quietly breaks the day you stop touching the code. Vasu Raj Jain leads at Amazon Ads without ever leaving the codebase, and in this PreVetted Podcast episode he and Federico Ramallo turn that habit into a full playbook for staying technical, building trust, and putting AI agents in their place.Vasu is a Senior Software Engineer and Engineering Lead at Amazon Ads, where he owns the architecture for ad-serving infrastructure that handles 50M+ requests per second across Prime Video, live sports, shopping, and audio. He directly leads 30 engineers and influences 150+ across the org. He walks through the balancing act at the core of ad tech: advertiser reach, publisher trust, and customer privacy all have to stay in harmony, or the deal falls apart.His path into engineering was almost accidental. A childhood dream of becoming a pilot ended when he failed the National Defense Academy physical over his eyesight; a month of chemical engineering followed before he switched to computer science, co-founded a hyper-local street-food app, and moved from India to the University of Florida on a student exchange, where a theoretical mindset gave way to a builder's one.The heart of the conversation is how he leads without losing the code. Vasu splits a two-week sprint roughly into writing code himself, designing systems, and mentoring, and he deliberately asks his own team to assign him sprint tasks so he understands their execution layer and earns their trust by leading from example.On AI, Vasu and Federico agree hard: agentic AI is a tool, not a replacement for junior engineers. Agents run on your identity and your credentials, so when something breaks the accountability lands on the human who spun them up, never on the agent. Junior engineers bring context, judgment, and a human touch that a tool cannot. They also dig into Federico's thesis that long-tenure teams who hold the business context are what steer agents well, plus his own rule of never letting an agent commit its own code.About Vasu Raj Jain:- https://www.linkedin.com/in/vasujain00/About Federico RamalloFounder of Density Labs, the AI Engineering Partner for the mid-market, helping US companies ship AI to production, backed by a decade of shipping software with distributed engineering teams. Author of The Invisible Distance, the operating system for engineering leaders running teams across borders. Host of The PreVetted Podcast: 150+ conversations with VPs of Engineering, CTOs, and operators on what actually works.- 💼 https://www.linkedin.com/in/framallo/- 🌐 https://densitylabs.io- ✅ https://prevetted.ai🎙 PreVetted Podcast- 🎯 https://prevetted.ai/podcast- 🐦 https://x.com/PrevettedPod- 🔗 https://www.linkedin.com/company/prevetted-podcastTIMESTAMPS:0:00 Serving ads across Amazon at scale3:40 Relevant ads vs customer privacy5:18 Balancing advertisers, publishers, and customers7:37 The pilot dream and the exam that changed everything8:57 Resilience and adaptability12:35 Switching from chemical engineering to CS16:35 From India to the US on a student exchange19:20 Theoretical vs practical: the mindset shift26:51 From individual contributor to engineering lead27:11 Splitting the sprint: code, design, mentor36:22 Handling interruptions with agentic AI40:39 Why agents help humans instead of replacing them41:42 Managing agents vs mentoring junior engineers46:29 Agents are tools; accountability stays human50:16 Advice: never lose touch with the code53:58 Advice for moving from India to the US#EngineeringLeadership #AIAgents #StayingTechnical #TechLeadership #AdTech</p>
July 22, 2026
#162 Technology Is the Greatest Equalizer: Mike Hess, Digital Accessibility & Workforce Development
<p>Mike Hess is the Founder and Executive Director of the Blind Institute of Technology (BIT), and his core message is simple: technology is the greatest equalizer for people with disabilities. In this PreVetted Podcast episode, Mike and Federico Ramallo dig into digital accessibility, WCAG, and workforce development, and why accessibility is also a real business advantage.</p><p>BIT is a pan-disability workforce development organization. Its fully virtual, instructor-led Academy levels people up in digital accessibility and Salesforce certifications toward gainful employment, and 100% of BIT's instructors identify with a disability.</p><p>Mike came up through a deep telecom and engineering career (Qwest, Level 3 Communications, switch engineering, COBOL) after entering tech through an IBM-funded program at the Community College of Denver as the Y2K boom took off. He was appointed by the Governor of Colorado to the Workforce Development Council and recognized with the Dr. Martin Luther King Jr. Business Award.</p><p>Mike explains why he calls technology an equalizer: Apple and Steve Jobs building screen-reader access into the first iPhone, Uber making independent ride-hailing possible for a blind traveler, and the RSA security tokens he could hear instead of see. He breaks down WCAG as a shared translation layer between assistive-technology users and developers, how modern JavaScript frameworks discard native HTML accessibility, and why Salesforce stands alone as the most accessible business enterprise application for B2B workforce development.</p><p>They also get into the harder problem of perception. Drawing on Daniel Kahneman's concept of loss aversion, Mike describes the "squishy feeling" that keeps well-meaning people from hiring people with disabilities, and the five words that dissolve it: "How can I help you?" They cover the curb-cut effect, how closed captions and text-to-voice built for the disability community now serve everyone, and the roughly 1.3 billion people worldwide (north of $10 trillion in disposable income) that businesses overlook. Mike's closing advice to hiring managers: accessibility is not difficult, it is intentional.</p><p>About Mike Hess:</p><p>https://www.linkedin.com/in/michael-hess-9a4a826/</p><p>https://blindit.org</p><p>About Federico Ramallo</p><p>Founder of Density Labs, the AI Engineering Partner for the mid-market, helping US companies ship AI to production, backed by a decade of shipping software with distributed engineering teams. Author of The Invisible Distance, the operating system for engineering leaders running teams across borders. Host of The PreVetted Podcast: 150+ conversations with VPs of Engineering, CTOs, and operators on what actually works.</p><p>https://www.linkedin.com/in/framallo/</p><p>https://densitylabs.io</p><p>https://prevetted.ai</p><p>PreVetted Podcast</p><p>https://prevetted.ai/podcast</p><p>https://x.com/PrevettedPod</p><p>https://www.linkedin.com/company/prevetted-podcast</p><p>TIMESTAMPS:</p><p>0:00 Introduction to the Blind Institute of Technology</p><p>1:13 Expanding Workforce Development for All Disabilities</p><p>3:27 The Impact of the ADA and Early Career Experiences</p><p>7:47 Resilience Through Economic Challenges</p><p>11:19 Building Resilience in the Disability Community</p><p>15:55 Creating Allies in the Disability Community</p><p>19:23 The Role of Technology as an Equalizer</p><p>22:39 Empowering Independence Through Accessible Technology</p><p>24:45 Understanding WCAG and Its Importance</p><p>26:43 Breaking Down Perceptions Around Disabilities</p><p>30:59 The Value of Accommodations for All</p><p>33:32 BIT's Dual Role in Workforce Development</p><p>36:22 Advice for Hiring Managers on Accessibility</p>
166 total episodes available
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