Edu Ferro (eferro) 🇵🇸
@eferro.net
https://eferro.net
Lean/Agile mindset.
Product Developer #XP #Lean #DevOps #People #productdevelopment
(he/him)
https://linktr.ee/eferro https://www.eferro.net/p/support-my-work.html
Lean/Agile mindset.
Product Developer #XP #Lean #DevOps #People #productdevelopment
(he/him)
https://linktr.ee/eferro https://www.eferro.net/p/support-my-work.html
Pinned
Edu Ferro (eferro) 🇵🇸
@eferro.net
· Apr 20
Lean Software Development en la práctica
Esta serie es una reflexión de mi experiencia — y la de mis equipos — trabajando de forma verdaderamente ágil: aplicando prácticas de Extrem...
www.eferro.net
Sharing my blog series on Lean Software Development in practice 🚀
Available in both Spanish and English:
(Spanish) 👉 www.eferro.net/p/lean-softw...
(English) 👉 www.eferro.net/p/lean-softw...
Hope you find it useful! Feedback is always welcome 🙌
#LeanSoftwareDevelopment #XP #Agile
Available in both Spanish and English:
(Spanish) 👉 www.eferro.net/p/lean-softw...
(English) 👉 www.eferro.net/p/lean-softw...
Hope you find it useful! Feedback is always welcome 🙌
#LeanSoftwareDevelopment #XP #Agile
The art of software is eliminating the unnecessary to reach the essence. What complexity can you remove this week to simplify your systems? #LeanSoftwareDevelopment #LessIsMore
November 25, 2025 at 7:13 PM
The art of software is eliminating the unnecessary to reach the essence. What complexity can you remove this week to simplify your systems? #LeanSoftwareDevelopment #LessIsMore
Reposted by Edu Ferro (eferro) 🇵🇸
New post: Scaling Systems and Teams. Five mental models every engineering leader should know: from Amdahl's Law to Little's Law. Why adding more resources can actually slow you down, and how to design for growth. www.eferro.net/2025/11/scal...
#SoftwareEngineering #SystemDesign #DevOps
#SoftwareEngineering #SystemDesign #DevOps
Scaling Systems and Teams: Five Mental Models for Engineering Leaders
Introduction: It's Not Performance, It's Scalability In engineering, we often chase performance, but the true challenge of growth lies in sc...
www.eferro.net
November 22, 2025 at 4:54 PM
New post: Scaling Systems and Teams. Five mental models every engineering leader should know: from Amdahl's Law to Little's Law. Why adding more resources can actually slow you down, and how to design for growth. www.eferro.net/2025/11/scal...
#SoftwareEngineering #SystemDesign #DevOps
#SoftwareEngineering #SystemDesign #DevOps
New post: Scaling Systems and Teams. Five mental models every engineering leader should know: from Amdahl's Law to Little's Law. Why adding more resources can actually slow you down, and how to design for growth. www.eferro.net/2025/11/scal...
#SoftwareEngineering #SystemDesign #DevOps
#SoftwareEngineering #SystemDesign #DevOps
Scaling Systems and Teams: Five Mental Models for Engineering Leaders
Introduction: It's Not Performance, It's Scalability In engineering, we often chase performance, but the true challenge of growth lies in sc...
www.eferro.net
November 22, 2025 at 4:54 PM
New post: Scaling Systems and Teams. Five mental models every engineering leader should know: from Amdahl's Law to Little's Law. Why adding more resources can actually slow you down, and how to design for growth. www.eferro.net/2025/11/scal...
#SoftwareEngineering #SystemDesign #DevOps
#SoftwareEngineering #SystemDesign #DevOps
Aim for a continuous flow with less drama. We're problem solvers, not just code writers. Focus on managing complexity effectively. #DevOpsMindset #ProblemSolving
November 21, 2025 at 6:11 AM
Aim for a continuous flow with less drama. We're problem solvers, not just code writers. Focus on managing complexity effectively. #DevOpsMindset #ProblemSolving
Think Tetris! Delay decisions to see the bigger picture. Small, frequent releases with built-in quality are key to minimizing waste and maximizing impact. #LeanSoftware #SmallSafeSteps
November 19, 2025 at 9:57 AM
Think Tetris! Delay decisions to see the bigger picture. Small, frequent releases with built-in quality are key to minimizing waste and maximizing impact. #LeanSoftware #SmallSafeSteps
True value in software isn't solely about new features. Protecting current value, reducing costs, and, crucially, avoiding unnecessary costs are equally important. #ValueDriven #CostAvoidance
November 17, 2025 at 11:49 PM
True value in software isn't solely about new features. Protecting current value, reducing costs, and, crucially, avoiding unnecessary costs are equally important. #ValueDriven #CostAvoidance
Reposted by Edu Ferro (eferro) 🇵🇸
Hoy lanzo “El doble clic” en mi blog. Cada semana compartiré lecturas, charlas y enlaces que me hayan gustado.
Perspectivas de @paoramen.com, @eferro.net, @elwatto.bsky.social y más!
Si te gustan la tecnología, los productos y las startups, ¡te interesará! 👇
Perspectivas de @paoramen.com, @eferro.net, @elwatto.bsky.social y más!
Si te gustan la tecnología, los productos y las startups, ¡te interesará! 👇
El doble clic — Semana del 17 de noviembre
Ideas, artículos y descubrimientos de la semana
enespanol.joaoqalves.net
November 17, 2025 at 9:50 AM
Hoy lanzo “El doble clic” en mi blog. Cada semana compartiré lecturas, charlas y enlaces que me hayan gustado.
Perspectivas de @paoramen.com, @eferro.net, @elwatto.bsky.social y más!
Si te gustan la tecnología, los productos y las startups, ¡te interesará! 👇
Perspectivas de @paoramen.com, @eferro.net, @elwatto.bsky.social y más!
Si te gustan la tecnología, los productos y las startups, ¡te interesará! 👇
Reposted by Edu Ferro (eferro) 🇵🇸
Charlote de Edu sobre cómo los procesos que consideramos estándar en la industria provocan comportamientos no deseados.
Y también sobre qué herramientas pueden ayudar a salir de ese círculo perverso de incentivos
Y también sobre qué herramientas pueden ayudar a salir de ese círculo perverso de incentivos
Vídeo ya disponible: actualicé el post con la charla completa sobre incentivos perversos y sistemas que sabotean equipos.
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
November 16, 2025 at 9:03 PM
Charlote de Edu sobre cómo los procesos que consideramos estándar en la industria provocan comportamientos no deseados.
Y también sobre qué herramientas pueden ayudar a salir de ese círculo perverso de incentivos
Y también sobre qué herramientas pueden ayudar a salir de ese círculo perverso de incentivos
Software evolves rapidly. The old analogy of building a static building doesn't fit continuous delivery. Recognize the ongoing cost of every feature from creation to deletion. #ContinuousDelivery #SoftwareEvolution
November 16, 2025 at 12:58 PM
Software evolves rapidly. The old analogy of building a static building doesn't fit continuous delivery. Recognize the ongoing cost of every feature from creation to deletion. #ContinuousDelivery #SoftwareEvolution
Reposted by Edu Ferro (eferro) 🇵🇸
This MUST be said (and done) more often.
Simplicity is hard work! We need to actively reduce accidental complexity and eliminate obsolete features. Don't let dead code bloat your system and confuse newcomers. #CodeSimplicity #TechWaste
November 15, 2025 at 10:41 PM
This MUST be said (and done) more often.
Vídeo ya disponible: actualicé el post con la charla completa sobre incentivos perversos y sistemas que sabotean equipos.
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
November 15, 2025 at 3:42 PM
Vídeo ya disponible: actualicé el post con la charla completa sobre incentivos perversos y sistemas que sabotean equipos.
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
www.eferro.net/2025/09/char...
Versión larga 45m
#Incentivos #Teams #EngineeringCulture #Lean
Simplicity is hard work! We need to actively reduce accidental complexity and eliminate obsolete features. Don't let dead code bloat your system and confuse newcomers. #CodeSimplicity #TechWaste
November 15, 2025 at 8:03 AM
Simplicity is hard work! We need to actively reduce accidental complexity and eliminate obsolete features. Don't let dead code bloat your system and confuse newcomers. #CodeSimplicity #TechWaste
Beware the hero culture! It often rewards those who fix problems last minute, instead of those preventing them. Let's focus on proactive problem-solving and sustainable practices. #EngineeringCulture #ProactiveNotReactive
November 14, 2025 at 7:41 AM
Beware the hero culture! It often rewards those who fix problems last minute, instead of those preventing them. Let's focus on proactive problem-solving and sustainable practices. #EngineeringCulture #ProactiveNotReactive
Software is like inventory, it incurs a cost just by existing. Continuously address maintenance, dependencies, and security to avoid a rapidly increasing basal cost.
www.eferro.net/2021/02/basa...
#SoftwareDevelopment #LeanSoftwareDevelopment
www.eferro.net/2021/02/basa...
#SoftwareDevelopment #LeanSoftwareDevelopment
Basal Cost of software
Last update: 2024/04/05 In my opinion, the development cost of each feature in a product can be divided as follows: The direct development c...
www.eferro.net
November 13, 2025 at 6:38 PM
Software is like inventory, it incurs a cost just by existing. Continuously address maintenance, dependencies, and security to avoid a rapidly increasing basal cost.
www.eferro.net/2021/02/basa...
#SoftwareDevelopment #LeanSoftwareDevelopment
www.eferro.net/2021/02/basa...
#SoftwareDevelopment #LeanSoftwareDevelopment
Building software is a team sport, a means to an end, not the end itself. Don't fall for the false tradeoff between quality and speed – long-term data shows quality enables velocity. #TeamworkInTech #SoftwareDevelopment
November 13, 2025 at 6:08 AM
Building software is a team sport, a means to an end, not the end itself. Don't fall for the false tradeoff between quality and speed – long-term data shows quality enables velocity. #TeamworkInTech #SoftwareDevelopment
Are our incentives driving us towards unnecessary complexity? Sometimes less tech and simpler solutions deliver more value. Let's question the drive for constant addition. #TechIncentives #SimplicityMatters
November 12, 2025 at 7:33 AM
Are our incentives driving us towards unnecessary complexity? Sometimes less tech and simpler solutions deliver more value. Let's question the drive for constant addition. #TechIncentives #SimplicityMatters
Software rots, it doesn't age like fine wine! Embrace Lean principles: small, frequent releases with built-in quality. Reduce waste and decide as late as possible for better outcomes. #Lean #Agile #ContinuousDelivery
November 11, 2025 at 8:52 PM
Software rots, it doesn't age like fine wine! Embrace Lean principles: small, frequent releases with built-in quality. Reduce waste and decide as late as possible for better outcomes. #Lean #Agile #ContinuousDelivery
Value isn't just new features. It's also about reducing and avoiding costs by proactively simplifying our software and killing dead code. Let's shift from hero culture to sustainable professionalism. #Simplicity #Value #EngineeringCulture
November 10, 2025 at 3:27 PM
Value isn't just new features. It's also about reducing and avoiding costs by proactively simplifying our software and killing dead code. Let's shift from hero culture to sustainable professionalism. #Simplicity #Value #EngineeringCulture
Reposted by Edu Ferro (eferro) 🇵🇸
93% coverage looked great. Mutation testing revealed 15 gaps in error handling.
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Mutation Testing: When "Good Enough" Tests Weren't
For weeks, I had been carrying this nagging doubt. The kind of doubt that's easy to ignore when everything is working. My inventory applic...
www.eferro.net
November 9, 2025 at 3:53 PM
93% coverage looked great. Mutation testing revealed 15 gaps in error handling.
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Reposted by Edu Ferro (eferro) 🇵🇸
Some people have asked me about the rules I usually use when working with Cursor and Claude Code, so I wrote a short blog post about it: www.eferro.net/2025/11/my-b...
#augmentedCoding #ai
#augmentedCoding #ai
My Base Setup for Augmented Coding with AI
Repository: eferro/augmentedcode-configuration Over the last months I've been experimenting a lot with AI-augmen...
www.eferro.net
November 10, 2025 at 9:05 AM
Some people have asked me about the rules I usually use when working with Cursor and Claude Code, so I wrote a short blog post about it: www.eferro.net/2025/11/my-b...
#augmentedCoding #ai
#augmentedCoding #ai
Reposted by Edu Ferro (eferro) 🇵🇸
Refined my workflow: how I apply a “pseudo-TDD with AI” loop in day-to-day coding.
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Pseudo TDD with AI
Exploring Test-Driven Development with AI Agents Over the past few months, I've been experimenting with a way to apply Test-Driven Deve...
www.eferro.net
November 10, 2025 at 9:16 AM
Refined my workflow: how I apply a “pseudo-TDD with AI” loop in day-to-day coding.
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Refined my workflow: how I apply a “pseudo-TDD with AI” loop in day-to-day coding.
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Pseudo TDD with AI
Exploring Test-Driven Development with AI Agents Over the past few months, I've been experimenting with a way to apply Test-Driven Deve...
www.eferro.net
November 10, 2025 at 9:16 AM
Refined my workflow: how I apply a “pseudo-TDD with AI” loop in day-to-day coding.
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Check it out: www.eferro.net/2025/11/pseu... #AugmentedCoding #TDD #AI
Some people have asked me about the rules I usually use when working with Cursor and Claude Code, so I wrote a short blog post about it: www.eferro.net/2025/11/my-b...
#augmentedCoding #ai
#augmentedCoding #ai
My Base Setup for Augmented Coding with AI
Repository: eferro/augmentedcode-configuration Over the last months I've been experimenting a lot with AI-augmen...
www.eferro.net
November 10, 2025 at 9:05 AM
Some people have asked me about the rules I usually use when working with Cursor and Claude Code, so I wrote a short blog post about it: www.eferro.net/2025/11/my-b...
#augmentedCoding #ai
#augmentedCoding #ai
Stop the complexity trap! We're often incentivized to build complex systems unnecessarily. Let's rethink our incentives and focus on value over "more." #Complexity #LeanSoftwareDevelopment #ContinousDelivery #LeanProductDevelopment
November 10, 2025 at 8:04 AM
Stop the complexity trap! We're often incentivized to build complex systems unnecessarily. Let's rethink our incentives and focus on value over "more." #Complexity #LeanSoftwareDevelopment #ContinousDelivery #LeanProductDevelopment
93% coverage looked great. Mutation testing revealed 15 gaps in error handling.
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Mutation Testing: When "Good Enough" Tests Weren't
For weeks, I had been carrying this nagging doubt. The kind of doubt that's easy to ignore when everything is working. My inventory applic...
www.eferro.net
November 9, 2025 at 3:53 PM
93% coverage looked great. Mutation testing revealed 15 gaps in error handling.
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...
Fixed in 2-3 hours with AI. Would have taken days before.
The economics of rigorous testing have changed.
www.eferro.net/2025/11/muta...