Señors at Scale

Dan Neciu

Welcome to Señors at Scale, the podcast where seasoned engineers spill the secrets, successes, and facepalms of building and maintaining software at scale. Join host Neciu Dan as we sit down with Staff Engineers, Principal Engineers, and other senior technologists to dive deep into the hard-won lessons of distributed systems, technical leadership, and scaling products that refuse to stay small. From war stories in incident response to behind-the-scenes architecture decisions, each episode brings a mix of practical insights, hard truths, and a healthy dose of dev humor. If you’ve ever wrang

  1. قبل يوم واحد

    Micro Frontends at Scale with Luca Mezzalira (O’Reilly Author and Principal Architect at AWS)

    In this episode of Señors @ Scale, Dan sits down with Luca Mezzalira, Principal Serverless Specialist at AWS and author of Building Micro-Frontends, for a deep and highly practical look at scaling frontend architectures for hundreds of developers. Luca shares the real story behind how micro-frontends were born — from his early experiments at DAZN trying to scale a live sports platform across 40 devices and 500+ engineers, to pioneering techniques that cut app startup times from 40 seconds to 12. We break down how distributed frontends actually work:How to design stable application shells with zero global state,How to compose independently deployed views without iframes, and how guardrails like bundle-size budgets and canary deployments keep massive systems fast and safe. Luca also explains the hidden challenges most teams miss — governance, team topology, and socio-technical design.He shows how to evolve from a monolith to micro-frontends step by step, using edge routing, feature flags, and domain-driven design to scale safely without rewrites. The conversation goes beyond theory — into the mechanics of migration, platform teams, CI/CD pipelines, and why friction in your system is actually a signal, not a failure. If you’re leading a frontend platform, planning a migration, or just trying to make sense of where micro-frontends actually fit, this episode is a masterclass in autonomy, architecture, and evolution at scale. Chapters00:00 The Origin of Micro-Frontends at DAZN05:41 Building a Distributed Frontend Without iFrames08:50 Designing the Application Shell and Stateless Architecture12:23 Zero Global State and Memory Management15:53 Guardrails for Bundle Size and Developer Discipline17:39 Governance and Designing for Scale20:18 When (and When Not) to Adopt Micro-Frontends22:46 Canary Releases and Edge Routing for Safe Migration25:49 Vertical vs Horizontal Splits in Micro-Frontends31:30 Lessons from Building the First Edition of the Book35:38 Frameworks, Federation, and Modern Tools39:22 Core Principles of Successful Frontend Architecture42:06 Building Platform Teams and Core Governance44:19 When Micro-Frontends Don’t Make Sense47:50 Micro-Frontends for Small Teams and Startups49:32 Monorepo vs Polyrepo – What Actually Matters53:10 Preventing Duplication and Encouraging Communication57:39 Why a Design System Is Non-Negotiable59:17 Common Anti-Patterns in Micro-Frontend Architecture 1:03:33 Book Recommendations and Final Thoughts Follow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/ Additional Resources 📘 Building Micro-Frontends – Luca Mezzalira (O’Reilly) buildingmicrofrontends.com 🌐 buildingmfe.com 💬 Luca’s Blog: https://lucamezzalira.com #microfrontends #aws #frontendarchitecture #javascript #webdevelopment #softwareengineering #softwarearchitecture #react #scaling #teamtopologies #serverless #señorsatscale Don’t forget to like, comment, and subscribe for more engineering stories from the front lines. How is your team approaching frontend scaling and independence? Share below 👇

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  2. ٢ نوفمبر

    Design System at Scale with Stefano Magni, Tech Lead at Preply

    🎙 About the Podcast: Join host Neciu Dan as he sits down with Stefano Magni, a senior front-end engineer and tech lead at Preply, to explore the intricacies of building a robust design system and the journey of working in public. Stefano shares his insights on the importance of skills, reputation, and networking in shaping a successful career. Discover how his experiences from building Flash mini-games to architecting React-based systems have influenced his approach to engineering excellence. In this episode, they discuss: The pivotal moment that led Stefano to work in public How Preply's design system impacts user experience The balance between perfectionism and pragmatism in engineering The role of data-driven decisions in Preply's culture Best practices for managing large codebases without tests Stefano also shares his journey from a Flash developer to a leader in the design system space, emphasizing the value of sharing knowledge and building a strong professional network. Chapters: 00:00 Introduction to Stefano Magni and Preply 05:12 The Importance of Public Work 12:45 Building a Design System at Preply 18:30 Balancing Perfectionism and Pragmatism 25:00 Data-Driven Culture at Preply 32:15 Managing Large Codebases Without Tests 40:00 The Journey from Flash to React 47:30 Networking and Reputation in Tech 55:00 Closing Thoughts and Future Plans 📚Links & Resources: 📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/ #designsystem #frontend #engineeringexcellence #preply #networking #publicwork #softwaredevelopment #señorsatscale Don’t forget to like, comment, and subscribe for more engineering stories from the front lines. How is your team approaching design systems and public work? Share below 👇

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  3. ٢٦ أكتوبر

    Reliability at Scale – With Bruno Paulino (N26)

    🎙 About the Podcast:Señors @ Scale is a no-fluff engineering podcast hosted by Neciu Dan — diving into the real-world chaos of scaling systems, teams, and yourself. From production bugs to platform bets, we sit down with senior engineers to discuss the scars, strategies, and lessons that truly matter. In this episode, host Neciu Dan sits down with Bruno Paulino, Tech Lead at N26, to unpack how reliability, experimentation, and platform culture shape one of Europe’s most trusted digital banks. Bruno’s path is anything but ordinary — from serving as a police officer in Brazil to leading FinTech engineering teams at scale. He shares how N26 builds server-driven UIs, runs AI-powered customer support, and balances speed vs reliability when every deploy touches millions of users. They break down: How server-driven UI lets N26 ship features in minutes Why CI/CD pipelines are the backbone of reliability What it means to trade speed for resilience in FinTech How Statsig changed experimentation culture company-wide Lessons from production outages and post-mortems Why strong developer experience drives safer systems It’s a deep dive into the real architecture, trade-offs, and human decisions behind reliable banking systems at scale. 🎧 Whether you’re scaling a FinTech product, managing CI/CD pipelines, or just trying to keep production sane, this one’s for you. Follow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/

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  4. ١٩ أكتوبر

    MicroFrontend at Scale with Igor (Director of Engineering at Cloudflare, co-creator of Angular) and Natalia (Principal Product Manager at Microsoft)

    In this episode of Señors @ Scale, Dan chats with Natalia Venditto, Principal Product Manager at Microsoft, and Igor Minar, Senior Director of Engineering at Cloudflare and co-creator of Angular, about WebFragments — a radical new approach to micro-frontends that rethinks how we build for the web. Natalia and Igor share how WebFragments was born from years of pain with module federation and brittle micro-frontend systems. They explain why shared dependencies and team coupling still plague large-scale applications, and how WebFragments breaks that pattern by isolating each fragment’s JavaScript and DOM context while still delivering a seamless user experience. We dive deep into the architecture:how iframes are being reinvented for performance and isolation,how Shadow DOM and a technique called Reframing encapsulate code like Docker does for containers,and how Fragment Piercing enables server-rendered fragments to appear instantly — even before the client shell has loaded. The conversation also covers the challenges of building vendor-agnostic, framework-independent systems, the middleware patterns that eliminate CORS issues, and Cloudflare’s real-world migration of its production dashboard to WebFragments.Plus, Natalia and Igor share what’s next — from nested fragments and out-of-order streaming to growing an open-source community around this new model of frontend architecture. Whether you’re building micro-frontends, leading platform teams, or just curious about what’s next for web architecture, this episode is a masterclass in isolation, performance, and pragmatic innovation at scale. Chapters00:00 Introduction to WebFragments and Guests06:48 Differentiating WebFragments from Module Federation13:46 The Promise of Independence in Micro-Frontends16:49 Reframing: A New Approach to Isolation19:54 The Concept of Piercing in WebFragments33:26 Fragment Communication and State Management36:09 Middleware and Request Routing39:22 WebFragments in Action at Cloudflare44:02 Getting Started and Migration Path50:13 Future Developments and Features54:37 Community and Contributions01:02:02 Outro Follow & Subscribe📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/ Additional Resourceshttps://github.com/webfragmentshttps://blog.cloudflare.com/https://learn.microsoft.com/ #microfrontends #webfragments #javascript #angular #cloudflare #microsoft #frontend #softwarearchitecture #performance #webdevelopment #softwareengineering #señorsatscale Don’t forget to like, comment, and subscribe for more engineering stories from the front lines.How is your team approaching micro-frontends and architectural independence? Share below 👇

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  5. ١٢ أكتوبر

    Observability at Scale with Erik Grijzen, Principal Software Engineer at New Relic

    In this episode of Señors @ Scale, Erik Grijzen, Principal Software Engineer at New Relic, joins Dan to share his journey from web designer to principal architect and what it really takes to scale UI development across dozens of teams. Erik walks us through how New Relic built one of the first large-scale micro-frontend architectures before the term even existed, designing tooling that lets teams ship independently—from CLI bootstrapping to runtime composition. He explains how to manage hundreds of deploys a day without breaking the platform, and how observability keeps complex systems reliable when they inevitably fail.We dive deep into observability at scale—how metrics, logs, traces, and business data blend to show what’s happening inside distributed systems, and why visibility isn’t just for developers anymore but a business priority tied to uptime, revenue, and customer trust.Erik also shares what technical leadership looks like at New Relic: influencing without authority, scaling architecture through culture, and using processes like RFCs and change documents to make better decisions. He emphasizes writing before building, POCs before roadmaps, and the mindset shift from coding features to guiding direction.The episode closes with a thoughtful discussion on burnout, balance, and habits for longevity in engineering—from sports and shutdown rituals to books like A Philosophy of Software Design and 4,000 Weeks.Whether you’re an architect, staff engineer, or team lead scaling a complex frontend platform, this episode is packed with real lessons on architecture, observability, and leadership at scale.Chapters00:00 Introduction to Erik Grijzen and His Journey08:48 Building a Unified Platform at New Relic13:34 Challenges and Solutions in Micro-Frontend Development18:47 How Observability Works Behind the Scenes32:02 Organizing Teams Around Domains36:38 Testing in Micro Frontends43:38 Technical Leadership and Management49:38 Effective Processes for Teams54:05 Decompressing and Work-Life Balance---Follow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/---Additional Resources[https://newrelic.com/blog](https://newrelic.com/blog)[https://micro-frontends.org/](https://micro-frontends.org/)[https://web.stanford.edu/~ouster/cgi-bin/book.php](https://web.stanford.edu/~ouster/cgi-bin/book.php)[https://oliverburkeman.com/books/4000-weeks/](https://oliverburkeman.com/books/4000-weeks/)#microfrontends #observability #softwarearchitecture #newrelic #frontend #softwareengineering #leadership #teammanagement #engineeringculture #señorsatscaleDon’t forget to like, comment, and subscribe for more engineering stories from the front lines. How is your team scaling architecture and observability? Share below 👇

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  6. ٦ أكتوبر

    Accessibility at Scale with Kateryna Porshnieva, Engineering at Buffer

    In this episode of Señors @ Scale, Kateryna Porchienova, Senior Engineering Manager at Buffer, joins Dan to talk about her journey into programming, the craft of UI animation, and why accessibility should be a standard — not an afterthought.Kateryna shares how her very first app, built in high school, ended up helping children with disabilities learn from home — sparking a lifelong commitment to inclusion in tech. She walks us through best practices for accessibility, from learning to use a screen reader to understanding semantic HTML and ARIA roles.We also dive into the tooling side — from React Aria and Radix to Storybook and Lighthouse — and discuss how AI can both help and hurt accessibility efforts. Kateryna explains the most common mistakes developers make (like overusing ARIA labels), why animation and motion preferences matter for users’ health, and how to advocate for accessibility within engineering teams and company culture.The episode closes with her favorite book recommendations on product development and communication, underscoring how great engineering is as much about people as it is about code.🎯 Whether you’re a frontend developer, design system engineer, or tech lead, this episode is packed with real stories, practical takeaways, and thoughtful lessons from years of building inclusive products at scale.Chapters00:00 Introduction to Katarina Porchienova02:40 The Importance of Animation in UI Design05:23 Katarina's Journey into Programming09:02 Exploring Accessibility in Development11:43 Best Practices for Accessibility14:18 Tools and Libraries for Accessibility Testing17:09 The Role of AI in Accessibility20:44 Common Mistakes in Accessibility Implementation24:14 Advocating for Accessibility in Companies30:37 Recommended Books and Closing Thoughts---Follow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/---Here are some additional resources to dive deeper into the topic and learn more:- If you are just starting with accessibility, this free course on Udacity is awesome: 🔗 [Web Accessibility Course / Udacity](https://www.udacity.com/course/web-accessibility--ud891)- A11ycasts series on YouTube is great for bite-sized content on accessibility and screen-reader tutorials🔗 [A11ycasts with Rob Dodson](https://www.youtube.com/watch?v=HtTyRajRuyY&list=PLNYkxOF6rcICWx0C9LVWWVqvHlYJyqw7g)- [Adrian Roselli blog](https://adrianroselli.com/posts) is an awesome resource for deep dives on specific topics and details- [Web Content Accessibility Guidelines (WCAG) 2.1](https://www.w3.org/TR/WCAG/)- [ARIA Authoring Practices Guide (APG)](https://www.w3.org/WAI/ARIA/apg/) is super useful for developing different widgets- [HTML Accessibility API Mappings](https://www.w3.org/TR/html-aam/) to see how native HTML elements map to accessibility tree- [Aria Live Regions documentation](https://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/ARIA_Live_Regions) to learn more about announcements and live regions- [A11Y support](https://a11ysupport.io/) shows support for various ARIA attributes across different screen readers#accessibility #webdevelopment #frontend #uiux #animation #buffer #reactaria #softwareengineering #a11y #engineeringculture #señorsatscaleDon’t forget to like, comment, and subscribe for more engineering stories from the front lines.How is your team building accessibility into your workflow? Share below 👇

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  7. ٢٨ سبتمبر

    Rails at Scale with Adrian Marin founder of AVO

    In this episode of Señors @ Scale, Adrian Marin, founder of AVO and host of FriendlyRB, joins Dan to share his journey into programming and his deep commitment to the Ruby ecosystem.Adrian walks us through his transition from a non-technical background into software development and how he fell in love with Ruby on Rails for its elegance and productivity. He explains why everything in Ruby is an object, what makes Rails still the fastest way to build apps, and how Hotwire redefines frontend development with minimal JavaScript.We also dive into the tools and frameworks shaping today’s developer experience: the rise of Tailwind CSS, why Adrian built AVO to make internal tooling in Rails as smooth as Laravel Nova, and how the Ruby ecosystem continues to thrive with innovative libraries and first-party tools.Beyond code, Adrian shares how community and creativity intersect in tech — from organizing FriendlyRB in Romania to inventing a Ruby Passport that lets conference-goers collect stamps and connect with peers across events.🎯 Whether you’re a Rubyist, Rails engineer, or curious about how productivity frameworks scale, this episode is packed with insights, stories, and lessons from the trenches.---Chapters00:00 Introduction to Adrian Marin and His Journey04:33 The Early Days of Programming06:58 Nostalgia for the Old Web Development Days08:53 Evolution of Web Development Tools12:45 The Impact of AI on Development14:11 The Rise of Tailwind CSS15:16 Adrian's Love for Tailwind CSS20:46 Transitioning from PHP to Ruby on Rails29:35 Building AVO: A Toolkit for Internal Tools34:31 Understanding Hotwire in Rails36:29 Understanding Client-Server Interactions39:30 The Ruby Ecosystem and Community Engagement44:36 Creating Memorable Conferences46:10 Innovative Networking: The Ruby Passport54:46 Getting Started with Ruby on Rails01:06:24 Balancing Work and Family Life01:07:42 Recommended Reads for Developers---Follow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/---#rubyonrails #ruby #rails #hotwire #tailwindcss #avo #softwaredevelopment #developercommunity #webdevelopment #engineeringculture #señorsatscaleDon’t forget to like, comment, and subscribe for more engineering stories from the front lines. Are you building with Rails at scale? Share your experience below 👇

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  8. ٢٢ سبتمبر

    Vue at Scale with Andreas Panopoulos

    In this episode of Señors @ Scale, Andreas Panopoulos — Staff Software Engineer at Hack the Box and co-organizer of Vue.js Athens — joins Dan to share his journey from building jQuery landing pages to leading frontend teams powered by Vue.Andreas walks us through the evolution of Vue.js, from version 2 to 3, and how features like the Composition API and TypeScript support transformed developer experience. He shares what it was like to rewrite Hack the Box’s Academy platform on Nuxt 3, why Vue scales for millions of users, and what performance practices every frontend team should keep in mind.We also dive into the human side of engineering: why understanding the basics of JavaScript is essential even when using frameworks, how public speaking and community organizing can accelerate growth, and why keeping things simple often beats overengineering.Along the way, Andreas reflects on lessons learned from his early career, his transition to staff engineer, and the role of community in shaping modern engineering culture.🎯 Whether you’re a Vue enthusiast, frontend engineer, or developer community organizer, this episode is packed with practical insights and stories from the trenches.Chapters00:00 Introduction to Andreas Panopoulos02:56 Andreas's Journey into Programming09:52 Transitioning to Frontend Development17:52 Current Role at Hack the Box21:41 Vue 2 vs Vue 3: A Developer's Perspective26:13 Lessons Learned from Early Career30:21 Transition to Staff Engineer34:46 Project Updates and Future Plans35:54 Understanding Hack the Box38:25 Security Practices in Development39:47 Performance and User Experience42:03 Vue's Popularity in Athens46:12 Business Logic and Frameworks47:27 Challenges in Finding Speakers52:26 Public Speaking Experiences56:34 Relaxation and Personal Interests58:00 Book RecommendationsFollow & Subscribe:📸 Instagram: https://www.instagram.com/senorsatscale/📸 Instagram: https://www.instagram.com/neciudev🎙 Podcast URL: https://neciudan.dev/senors-at-scale📬 Newsletter: https://neciudan.dev/subscribe💼 LinkedIn: https://www.linkedin.com/in/neciudan💼 LinkedIn: https://www.linkedin.com/company/se%C3%B1ors-scale/#vuejs #vue3 #nuxt #frontenddevelopment #javascript #hackthebox #softwareengineering #webdevelopment #engineeringculture #señorsatscaleDon’t forget to like, comment, and subscribe for more engineering stories from the front lines. Are you using Vue at scale in your team? Share your experience below 👇

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مشاهدة الكل (١٧)

حول

Welcome to Señors at Scale, the podcast where seasoned engineers spill the secrets, successes, and facepalms of building and maintaining software at scale. Join host Neciu Dan as we sit down with Staff Engineers, Principal Engineers, and other senior technologists to dive deep into the hard-won lessons of distributed systems, technical leadership, and scaling products that refuse to stay small. From war stories in incident response to behind-the-scenes architecture decisions, each episode brings a mix of practical insights, hard truths, and a healthy dose of dev humor. If you’ve ever wrang

المعلومات

  • صناع العمل
    Dan Neciu
  • سنوات النشاط
    ٢٠٢٥
  • الحلقات
    ١٧
  • التقييم
    ملائم
  • حقوق النشر
    © Dan Neciu
  • موقع البرنامج على الويب
    Señors at Scale

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