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#71: What to do before refactoring, Chrome DevTools MCP, Deno 2.5 & more.

What to do before refactoring, Chrome DevTools MCP, Deno 2.5 & more.

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The recruitment platform for techies 🤓
#71 October

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Este 2025 estamos creciendo un 65% vs 2024 y buscamos socios que nos ayuden a crecer aún más 🚀 Gracias a nuestra comunidad ya tenemos 120K€ de los 200K€ que necesitamos ¿Te unes como socio?

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Something to read 📖

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This article is recommended
by Antonio Santiago

Software engineer and co-founder at Joppy.

What to do before refactoring
Before you dive into refactoring, take a moment to understand the existing code, preserve tests, and question your motivations. Doing this preparation can mean the difference between a clean upgrade and a risky rewrite.
Give your AI eyes: Introducing Chrome DevTools MCP
Chrome DevTools MCP is a newly announced tool from our team in that allows AI coding assistants to see and interact with a live Chrome browser. preview
Deno 2.5: Permissions in the config file
Deno 2.5 is out with powerful updates: permission sets in deno.json, new test setup/teardown APIs, custom WebSocket headers, and more. Explore the full release notes to see how these changes can streamline your workflow. preview
A decade and a half of instability: The history of Google messaging apps
For over 15 years, Google has launched and killed countless messaging apps, from Talk and Hangouts to Allo, Chat, and RCS. This piece looks back at the company’s long struggle to create a stable, unified messaging platform. preview
How Zapier runs isolated tasks on AWS Lambda and upgrades functions at scale
Zapier runs hundreds of thousands of serverless functions, and keeping them secure and up-to-date at scale is no small task. This post explores how they use AWS Lambda for strong isolation, automate runtime upgrades, and streamline function lifecycle management without disrupting customer workflows. preview
Quotes Innovation distinguishes between a leader and a follower

Steve Jobs

HackBarna - AI Summit 2025
October 11th & 12th
Ready to push the boundaries of AI innovation? Join the most ambitious AI hackathon in Barcelona! 🚀 Connect with leading AI researchers, engineers, and innovators. Build groundbreaking projects with cutting-edge AI tools and compete for amazing prizes.

Something to watch 📺

preview2
Dynamic Programming - Learn to Solve Algorithmic Problems & Coding Challenges

Learn how to use Dynamic Programming in this course for beginners. It can help you solve complex programming problems, such as those often seen in programming interview questions about data structures and algorithms.
preview2
SOLID Principles: Do You Really Understand Them?

People mention SOLID everywhere but very few do a good job of explaining it. I am hoping to put an end to that in this video so you can once and for all understand all the SOLID principles.

Some job offers 🧐

company logo Embat is looking for a Senior Backend Engineer - NodeJS Apply

Hybrid Remote Madrid

Embat is looking for a Senior Backend Engineer to design scalable architecture, set lasting engineering standards, and mentor engineers. This high-impact role goes beyond coding, shaping technical vision, driving innovation, and influencing company strategy.

company logo Permisso is looking for a Software Engineer 45K€-65K€ Apply

Barcelona

Permisso is seeking an engineer to help build and improve its product, using Typescript and MongoDB on the backend, React on the frontend, and Python for data services. This role is key to shaping the future of financial services in Europe by driving innovation and real-time data solutions.

company logo Acai Travel is looking for a Senior Software Engineer - Go + LLMs + AI 60K€-70K€ Apply

Barcelona

We're looking for an exceptional Senior Software Engineer who lives at the intersection of engineering excellence and product obsession. You'll build backend systems behind our AI automation platform while being deeply involved in product decisions, customer conversations, and the "why" behind every feature.

Seen on the net 🌐

preview Params Editor

The smartest way to edit URL parameters in Chrome. Automatically detects parameter types and provides the perfect input for each one.

preview Broken-Links Scanner

A free browser extension that checks links on any web page.

preview Data Scout

DataScout provides fast, precise database analysis for SwiftData/CoreData with live updates, intuitive navigation, and #Predicate-based filtering to streamline debugging.

preview Eleventy LibDoc

A user-friendly Eleventy starter project for building responsive, accessible documentation sites with built-in JavaScript components like search and navigation.

Quotes Don’t let anyone rob you of your imagination, your creativity, or your curiosity

Mae Jemison

Something to laugh (or not) 😂

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Some events to attend 📍

AI Afterwork: Road to AI Summit Barcelona

We’ll be at AI Summit Barcelona showcasing AI with live demos, panels, and networking, featuring tech trends, practical applications, and AI agents in a lively, social setting.

Barcelona

14 October

More

Montando un SaaS en la vida real: lecciones técnicas y de producto

En esta charla de Carlos Sánchez Cazorla y Alberto Asuero de MOGU vienen a contarnos como han montado un Saas desde 0. Nos hablarán aspectos como arquitectura, pasarelas de pago, despliegues, etc. y como casa todo eso con la parte de producto/Negocio.

Sevilla

15 October

More

WTM Madrid | Realidad Virtual en salud y estrategia digital

Únete al meetup para descubrir cómo co-crear estrategias digitales con design thinking y cómo la realidad virtual puede aliviar el dolor y dar propósito al trabajo de los desarrolladores.

Madrid

23 October

More

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