Friday, March 27, 2020

Looking for new challenges


Given the current situation and the impact it is having on Retailers and in the SaaS product for them, now, I am looking for new challenges (remote or in Madrid).

I am a software engineer passionate about people, technology, product development, and having an impact.

I help teams and systems grow from an end to end vision and with the ability to impact the development process, architecture, technical practices, agility, and product development. Using continuous delivery as a goal, I help teams become high-performance teams.

I have experience with CD, XP, DevOps culture, DDD, Lean software development, Lean product management and remote working (as a developer and as manager).

Here are my CV and some related links that may be of interest:

See: Challenge accepted

Saturday, March 21, 2020

Good talks/podcasts (March 2020 II)

These are the best podcast/talks I've seen/listen to recently:

  • The Beautiful Mess (John Cutler) [Agile, Company Culture, Management, Product] John explains how we must all embrace ‘the beautiful mess’ and learn to navigate change in order to be more successful.
  • What Will The Next 10 Years Of Continuous Delivery Look Like? (Dave Farley, Jez Humble) [Agile, CD, Continuous Delivery, Devops, Microservices, Technical Practices, Technology Strategy] In the 10 years since the publication of the Continuous Delivery Book, a lot has changed. Continuous Delivery has become a reality for many organizations all over the world and an aspiration for many more. Join the authors Dave & Jez to reflect on why Continuous Delivery has been such a successful concept, why it matters and where it is going. (⭐⭐⭐⭐⭐)
  • What Does it Mean to Lead IT? (Mark Schwartz) [Engineering Culture, Management]
  • The Agile Revolution Podcast: Episode 180: Extreme Programming & 3X Explained with Kent Beck (Kent Beck) [Agile, Company Culture, Mental models, Technology Strategy, XP] An interesting conversation about XP including a potential reboot, 3x, TDD, TRC, etc.
  • Progressive Delivery Patterns In The Wild (Dave Karow) [Agile, CD, Continuous Delivery, Devops, Technical Practices] Progressive Delivery and the statistical observation of real users (sometimes known as “shift right testing” or “feature experimentation”) are essential CD practices. They free teams up to move fast, limit the blast radius of issues found in production and focus engineering cycles on work that delivers results, not just releases.
  • Modern Product Management (Marty Cagan) [Agile, Management, Product] An interesting Q&A session with Marty Cagan.
  • Microservices and Rules Engines – a blast from the past (Udi Dahan) [DDD, Design, Technical Practices] Good insights about the real meaning of delete in different domains and about how to design solutions to model complicated services as search service, price service, risk service, that require to process information from different subdomains.
  • Agile Essence and Fluency (Martin Fowler) [Agile, Engineering Culture, Technical Practices, inspirational] As agile software has got more accepted and popular, it’s also been subject to a fair bit of misunderstanding. This talk focuses on the essence of agile software development, adaptive planning, and people-orientation. Following this, a brief summary of the Agile Fluency model, which describes the typical path people follow as they learn and apply agile software development, is given.
  • Practical Change Data Streaming Use Cases with Apache Kafka & Debezium (Gunnar Morling) [Architecture, Data Engineering, Design, Microservices] Gunnar Morling discusses practical matters, best practices for running Debezium in production on and off Kubernetes, and the many use cases enabled by Kafka Connect's single message transformations. He talks about how to leverage CDC for reliable microservices integration, e.g. using the outbox pattern, as well as many other CDC applications (maintaining audit logs, driving streaming queries).
Reminder, All these talks are interesting even just listening to them, without seeing them.


Sunday, March 15, 2020

Good talks/podcasts (March 2020 I)

These are the best podcast/talks I've seen/listen to recently:

  • Why So Serverless? (Bob Gregory) [Architecture, Engineering Culture, Scalability, serverless] Bob Gregory, Chief Architect at Cazoo, shares his teams insights into serverless architecture from their experience building a new eCommerce platform in a matter of months.
  • AFH 107: Explore, Expand, Extract with Kent Beck (Kent Beck) [Agile, Company Culture, Mental models, Technology Strategy, XP] Kent Beck (@kentbeck) joined Ryan Ripley (@ryanripley) to discuss product development, Extreme Programming, certifications, and his new book on software design.
  • AWS re:Invent 2019: Data modeling with Amazon DynamoDB (CMY304) (Alex DeBrie) [Architecture, Design, Scalability, Technical Practices, Technology, serverless] Modeling your data in the DynamoDB database structure requires a different approach from modeling in traditional relational databases. Alex DeBrie has written a number of applications using DynamoDB and is the creator of, a free resource for learning DynamoDB. (⭐⭐⭐⭐⭐)
  • Mik + One podcast: Episode 1: Gene Kim (Part 1) (Mik Kersten, Gene Kim) [Agile, Continuous Delivery, Engineering Culture, Product, inspirational] They talk about: the Unicorn Project, the first two ideals (Locality and Simplicity and Focus, Flow and Joy).
  • Mik + One podcast: Episode 2: Gene Kim (Part 2) (Mik Kersten, Gene Kim) [Agile, Continuous Delivery, Engineering Culture, Product, inspirational] They talk about the last three ideals described in The Unicorn Project; Improvement of Daily Work, Psychological Safety and Customer Focus.
  • Intro to Amazon EventBridge (James Beswick) [Architecture patterns, Cloud, Microservices, serverless] Learn about Amazon EventBridge and how it can help simplify your application architecture. In this video, we'll cover common challenges and the benefits of an event-driven design supported by EventBridge. (⭐⭐⭐⭐⭐)
  • Technical leadership and glue work (Tanya Reilly) [Engineering Career, Engineering Culture, Management, inspirational] Let's talk about how to allocate glue work deliberately, frame it usefully and make sure that everyone is choosing a career path they actually want to be on. (⭐⭐⭐⭐⭐) (Thanks @islomar for the recommendation).
  • Everyone Thinks They’re Managing by Outcomes. Here’s How to Actually Do it. (Teresa Torres) [Engineering Culture, Management, Product, inspirational] Interesting tips to make this mental shift. The talk is targeted at managers and leaders.
  • Fast & Simple: Observing Code & Infra Deployments At Honeycomb (Liz Fong-Jones, Daniel Fisher) [CD, Continuous Delivery, Devops, Engineering Culture] You don’t need kubernetes to automatically push green builds to production – learn how Honeycomb has utilized CircleCI, Terraform, Chef, a collection of home-grown scripts, and Honeycomb itself to speed up its deployments and make them safer. We’ll talk about what went wrong along the way, and how we used our Service Level Objectives to evaluate and mitigate the risks.
  • How To Design A Good API and Why it Matters (Joshua Bloch) [Design] Every day around the world, software developers spend much of their time working with a variety of Application Programming Interfaces (APIs). Some are integral to the core platform, some provide access to widely distributed frameworks, and some are written in-house for use by a few developers. Nearly all programmers occasionally function as API designers, whether they know it or not. A well-designed API can be a great asset to the organization that wrote it and to all who use it. Good APIs increase the pleasure and productivity of the developers who use them, the quality of the software they produce, and ultimately, the corporate bottom line...
  • If Russ Ackoff had given a TED Talk... (Russell L. Ackoff) [Lean, Management, Mental models, inspirational] This presentation is from a 1994 event hosted by Clare Crawford-Mason and Lloyd Dobyns to capture the Learning and Legacy of Dr. W. Edwards Deming. Russ knew Dr. Deming and speaks here about the difference between "continuous improvement" and "discontinuous improvement" as seen through the lens of systems thinking.
  • Observability: What Got You Here Won’t Get You There (Charity Majors) [Devops, Engineering Culture, Microservices, Operations, Technology Strategy] In the first wave of DevOps, practitioners embraced change to incorporate development into design and build processes. To successfully build the next generation of software, practitioners will need to catch the second wave of DevOps to focus on controlling and fine-tuning evolving architectures. Honeycomb CEO, Charity Majors, discusses how to ensure buildability, empower developers, and make a truly observable architecture that’s primed for success.
Reminder, All these talks are interesting even just listening to them, without seeing them.


Sunday, March 08, 2020

Scalability Basics, application to systems, teams and processes / Caceres Devops Days 2020

A few days ago, I had the great luck to be able to present at the DevOps Days Caceres 2020, together with Fran Ortiz, a presentation about system and team scalability. We presented several mental models that help to understand or design scalable systems and organizations.

Video (spanish)



Original document