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
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...
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 9, 2025 at 8:36 AM
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) 🇵🇸
Y tras el desayuno, arranca el Global Day of Code Retreat, version IA, en las oficinas de Trainline 🙌 Nos espera un dia entero de aprendizaje, gracias a facilitador@s y asistentes, como os lo curráis dedicando un sábado al #gdcr25
November 8, 2025 at 8:46 AM
Y tras el desayuno, arranca el Global Day of Code Retreat, version IA, en las oficinas de Trainline 🙌 Nos espera un dia entero de aprendizaje, gracias a facilitador@s y asistentes, como os lo curráis dedicando un sábado al #gdcr25
Reposted by Edu Ferro (eferro) 🇵🇸
Epa ahí!!! Un poco tarde pero seguro. Estamos en #movember
Este año vuelve el bicolor.
Apoya mi recaudación de fondos: movember.com/m/apa42?mc=60
Este año vuelve el bicolor.
Apoya mi recaudación de fondos: movember.com/m/apa42?mc=60
Alberto Pérez Alonso's Mo Space
Motivation: Estoy recaudando fondos y fomentando la sensibilización este Movember por todos los padres, hermanos, hijos y amigos de nuestras vidas. Necesito tu ayuda. Por favor, haz un donativo por la...
movember.com
November 6, 2025 at 8:54 PM
Epa ahí!!! Un poco tarde pero seguro. Estamos en #movember
Este año vuelve el bicolor.
Apoya mi recaudación de fondos: movember.com/m/apa42?mc=60
Este año vuelve el bicolor.
Apoya mi recaudación de fondos: movember.com/m/apa42?mc=60
Reposted by Edu Ferro (eferro) 🇵🇸
Mañana nuevo evento de la comunidad de crafters de Murcia 👀
[Kata] Bingo, vie, 7 nov 2025, 18:00 | Meetup
**Descripción**
Este viernes practicamos con una kata de refactoring.
https://sammancoaching.org/kata_descriptions/bingo.html
Trabajaremos en parejas, paso a paso refacto
www.meetup.com
November 6, 2025 at 2:35 PM
Mañana nuevo evento de la comunidad de crafters de Murcia 👀
Reposted by Edu Ferro (eferro) 🇵🇸
¡En breves empezaremos con nuestro Black Friday! 🥳
Ademáaaaas, este año vamos a incluir más novedades.
¡Apúntate a la waitlist para que te avisemos de ello!
codely.com/blackfriday?...
Ademáaaaas, este año vamos a incluir más novedades.
¡Apúntate a la waitlist para que te avisemos de ello!
codely.com/blackfriday?...
🔥 Estamos de Black Friday en Codely! ﹤🍍﹥ Codely
Cursos de principios SOLID, Domain-Driven Design, Arquitectura Hexagonal, Docker, CQRS, Microservicios, Kubernetes, Testing, Front-end y mucho más.
codely.com
November 6, 2025 at 3:24 PM
¡En breves empezaremos con nuestro Black Friday! 🥳
Ademáaaaas, este año vamos a incluir más novedades.
¡Apúntate a la waitlist para que te avisemos de ello!
codely.com/blackfriday?...
Ademáaaaas, este año vamos a incluir más novedades.
¡Apúntate a la waitlist para que te avisemos de ello!
codely.com/blackfriday?...
Reposted by Edu Ferro (eferro) 🇵🇸
Bueno pues ya han publicado la charla que dí en la @bcnswcraft.bsky.social en youtube.
Cuento anécdotas curiosas en distintos proyectos en los que he participado a lo largo de mi carrera, todas relacionadas con sistemas distribuidos y algunas acciones que nos ayudaron.
youtu.be/bVoxOSPDVzA?...
Cuento anécdotas curiosas en distintos proyectos en los que he participado a lo largo de mi carrera, todas relacionadas con sistemas distribuidos y algunas acciones que nos ayudaron.
youtu.be/bVoxOSPDVzA?...
Isa Garrido - Sobreviviendo al caos distribuido - SCBCN 25
YouTube video by Sirviendo Código
youtu.be
November 4, 2025 at 5:05 PM
Bueno pues ya han publicado la charla que dí en la @bcnswcraft.bsky.social en youtube.
Cuento anécdotas curiosas en distintos proyectos en los que he participado a lo largo de mi carrera, todas relacionadas con sistemas distribuidos y algunas acciones que nos ayudaron.
youtu.be/bVoxOSPDVzA?...
Cuento anécdotas curiosas en distintos proyectos en los que he participado a lo largo de mi carrera, todas relacionadas con sistemas distribuidos y algunas acciones que nos ayudaron.
youtu.be/bVoxOSPDVzA?...
Reposted by Edu Ferro (eferro) 🇵🇸
Super interesting article by @eferro.net www.eferro.net/2025/11/when...
Will people follow this path or with the cost of doing things disappearing people will just vomit more and more code, without paying attention to quality?
Will we forgot about "good practices" or will they loose sense?
Will people follow this path or with the cost of doing things disappearing people will just vomit more and more code, without paying attention to quality?
Will we forgot about "good practices" or will they loose sense?
When AI Makes Good Practices Almost Free
Since I started working with AI agents, I've had a feeling that was hard to explain. It wasn't so much that AI made work faster or easier, b...
www.eferro.net
November 4, 2025 at 11:56 AM
Super interesting article by @eferro.net www.eferro.net/2025/11/when...
Will people follow this path or with the cost of doing things disappearing people will just vomit more and more code, without paying attention to quality?
Will we forgot about "good practices" or will they loose sense?
Will people follow this path or with the cost of doing things disappearing people will just vomit more and more code, without paying attention to quality?
Will we forgot about "good practices" or will they loose sense?
Reposted by Edu Ferro (eferro) 🇵🇸
Exploring how AI changes the cost of good engineering practices.
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
When AI Makes Good Practices Almost Free
Since I started working with AI agents, I've had a feeling that was hard to explain. It wasn't so much that AI made work faster or easier, b...
www.eferro.net
November 3, 2025 at 3:52 PM
Exploring how AI changes the cost of good engineering practices.
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Reposted by Edu Ferro (eferro) 🇵🇸
He actualizado www.eferro.net/2025/10/keyn...
incluyendo el video completo de la keynote “Desapego radical en la era de la IA”.
Gracias a @sirviendocodigo.bsky.social por la grabación y a toda la organización de @bcnswcraft.bsky.social por la invitación y la conferencia que se han marcado.
incluyendo el video completo de la keynote “Desapego radical en la era de la IA”.
Gracias a @sirviendocodigo.bsky.social por la grabación y a toda la organización de @bcnswcraft.bsky.social por la invitación y la conferencia que se han marcado.
Keynote: Desapego radical en la era de la IA
Ayer sábado 25 de octubre tuve el honor de dar la keynote de apertura en Barcelona Software Crafters 2025 con la charla "Desapego radical e...
www.eferro.net
November 3, 2025 at 5:05 PM
He actualizado www.eferro.net/2025/10/keyn...
incluyendo el video completo de la keynote “Desapego radical en la era de la IA”.
Gracias a @sirviendocodigo.bsky.social por la grabación y a toda la organización de @bcnswcraft.bsky.social por la invitación y la conferencia que se han marcado.
incluyendo el video completo de la keynote “Desapego radical en la era de la IA”.
Gracias a @sirviendocodigo.bsky.social por la grabación y a toda la organización de @bcnswcraft.bsky.social por la invitación y la conferencia que se han marcado.
Exploring how AI changes the cost of good engineering practices.
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
When AI Makes Good Practices Almost Free
Since I started working with AI agents, I've had a feeling that was hard to explain. It wasn't so much that AI made work faster or easier, b...
www.eferro.net
November 3, 2025 at 3:52 PM
Exploring how AI changes the cost of good engineering practices.
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Some things that used to feel expensive now feel almost free.
📝 www.eferro.net/2025/11/when...
#AI #SoftwareEngineering
Reposted by Edu Ferro (eferro) 🇵🇸
💫Unir nuestro camino con @nextdigitalhub.bsky.social es maravilloso. ✨
Poder anunciarlo en @tarugoconf.bsky.social y compartirlo con amistades y colegas, inolvidable. 🌈
Y haber contado con el apoyo de Pétalo para hacerlo posible, inmejorable.👌Gracias @davidbonilla.bsky.social y Diego Mariño🙌
Poder anunciarlo en @tarugoconf.bsky.social y compartirlo con amistades y colegas, inolvidable. 🌈
Y haber contado con el apoyo de Pétalo para hacerlo posible, inmejorable.👌Gracias @davidbonilla.bsky.social y Diego Mariño🙌
October 27, 2025 at 11:36 AM
💫Unir nuestro camino con @nextdigitalhub.bsky.social es maravilloso. ✨
Poder anunciarlo en @tarugoconf.bsky.social y compartirlo con amistades y colegas, inolvidable. 🌈
Y haber contado con el apoyo de Pétalo para hacerlo posible, inmejorable.👌Gracias @davidbonilla.bsky.social y Diego Mariño🙌
Poder anunciarlo en @tarugoconf.bsky.social y compartirlo con amistades y colegas, inolvidable. 🌈
Y haber contado con el apoyo de Pétalo para hacerlo posible, inmejorable.👌Gracias @davidbonilla.bsky.social y Diego Mariño🙌