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Open in app Sign In Get started Home Notifications Lists Stories -------------------------------------------------------------------------------- Write Fred Thoughts 3.7K Followers Follow Home About Startups Leadership System Engineering More Stories Github Fred de Villamil ·May 28, 2019 I’M JOINING MYLI AS A CTO (AND OTHER NEWS FROM YOURS TRULY YOU MIGHT HAVE MISSED) Hi readers, long time no see! Almost 10 months if I’m counting well. As of today, I’m joining Myli, My Local Influence, as a CTO. Myli is a 7 people startup developing a suite of tools to improve reviews management and more on the Web located in Marseille, in the… Startup 4 min read -------------------------------------------------------------------------------- Fred de Villamil ·Aug 6, 2018 AN IPHONE SETUP FOR THE PRODUCTIVITY FREAKS In case you missed it, I’m a big productivity freak. … Apple 12 min read -------------------------------------------------------------------------------- Fred de Villamil ·Apr 8, 2018 A STEP BY STEP GUIDE TO SECURING YOUR SSH KEYS WITH THE LEDGER NANO S Contrary to a popular belief, the Ledger Nano S is not only designed to secure crypto currencies. It can also be used to generate and store private SSH keys, which makes it the most secure way to protect them. Being both slightly paranoid, a Ledger employee and a heavy SSH… Ssh 5 min read -------------------------------------------------------------------------------- Fred de Villamil ·Apr 7, 2018 BOOST YOUR PRODUCTIVITY WITH SWITCHING YOUR SCREENS TO GREYSCALE I’ve recently discovered an unlikely life hack to improve my productivity while working on my computer and my cellphone: switching my screens to greyscale. Our attention is constantly attracted by the shiny colours we get on the screen, whether we're working on a spreadsheet, coding with syntax highlighting on, or… Mac 3 min read -------------------------------------------------------------------------------- Fred de Villamil ·Apr 4, 2018 DEFINING YOUR LEADERSHIP STYLE Just before I joined Ledger, I met Pierre Landy, a lawyer passionate with leadership who later joined us as a General Counsel. Pierre told us about something he calls the clear contract, where he defines himself to his coworkers in 4 simple steps, before asking them to do the same… Leadership 3 min read -------------------------------------------------------------------------------- Fred de Villamil ·Mar 12, 2018 HIRING AND MANAGING HAPPY ENGINEERS Last week, I was giving a talk about hiring and managing happy engineers at the CTO Pizza event. It was a great occasion to share some leadership, recruitment and management tips, specially: My leadership style as a VP Engineering The technology assessment we do during the interviews to know more about a candidate strengths and weaknesses Some KPI like the team fatigue rate, to avoid burnout Startup 1 min read -------------------------------------------------------------------------------- Fred de Villamil ·Dec 18, 2017 WHAT WOULD YOUR NEXT DREAM JOB LOOK LIKE? Every time I interview a candidate for a role, I ask them the same question: What would your next dream job look like? They usually start giving the basic answers they think I'm expecting: a great team, amazing projects, great culture… before they summarize the job description. So I rephrase. … Careers 1 min read -------------------------------------------------------------------------------- Fred de Villamil ·Dec 8, 2017 THAT LITTLE KNOWN KPI EVERY OPS TEAM SHOULD TRACK Being an ops is tough. You handle lots of incidents, and have on-call where you might get awaken 3 or 4 times a night during the week. The same happens during the day, when you get interrupted during your work to manage yet another incident with a surplus of stress. … Startup 2 min read -------------------------------------------------------------------------------- Fred de Villamil ·Dec 5, 2017 THE LIFE SAVING HABIT OF HAVING A MORNING ROUTINE FOR JOBLESS & WORKING FROM HOME PEOPLE Last night, I had a conversation about morning routines with the amazing, awesome Margaret Quigley. Many people in tech have set up a morning routine, and there are many blog posts about it, so it's considered normal in our field. … Productivity 2 min read -------------------------------------------------------------------------------- Fred de Villamil ·Nov 26, 2017 MIGRATING A 130TB CLUSTER FROM ELASTICSEARCH 2 TO 5 IN 20 HOURS WITH 0 DOWNTIME AND A ROLLBACK STRATEGY This article and much more is now part of my FREE EBOOK Running Elasticsearch for Fun and Profit available on Github. Fork it, star it, open issues and send PRs! Do you remember Blackhole, the 36 billion documents Elasticsearch cluster we had to reindex a while ago? Blackhole is now… Elasticsearch 10 min read -------------------------------------------------------------------------------- Fred de Villamil ·Nov 24, 2017 MERGING 2 DIFFERENT GIT REPOSITORIES WITHOUT LOSING YOUR HISTORY Today, I had to merge a git based project into another one. Nothing seems simpler, I just had to remove the .git directory, pick up the files, git commit -a -S -m “Merging old project into the new one” and we’re done. Except that I didn’t want to lose the… Git 2 min read -------------------------------------------------------------------------------- Fred de Villamil ·Nov 17, 2017 I'M JOINING LEDGER AS VP ENGINEERING Yesterday was my last day at Synthesio. After 3 years scaling and leading the infrastructure team, I’m thrilled to announce that I’m starting a new position as VP of Engineering at Ledger. I’m excited to join a wonderful human and tech adventure. … Blockchain 2 min read -------------------------------------------------------------------------------- Fred de Villamil ·Oct 29, 2017 AN ANSIBLE ROLE TO MANAGE YOUR ELASTICSEARCH CLUSTERS The Synthesio Team Coffee (aka the infrastructure team) I'm a proud member of has released a set of Ansible tasks to help you manage an Elasticsearch cluster. The role is published under the MIT License and PRs are welcome if you want to add more tasks. We have gathered the… Elasticsearch 2 min read -------------------------------------------------------------------------------- Fred de Villamil ·Oct 22, 2017 OPERATING LARGE ELASTICSEARCH CLUSTERS This article and much more is now part of my FREE EBOOK Running Elasticsearch for Fun and Profit available on Github. Fork it, star it, open issues and send PRs! Last Friday, I gave a talk about managing large Elasticsearch clusters at the French Sysadmindays #7. The slides (in English) and the video (in French) are online. Hope you enjoy them as much as I enjoyed those 2 days of sharing and fun. And thank you @renchap for setting this up and the Mozilla Foundation for having us. Elasticsearch 1 min read -------------------------------------------------------------------------------- Fred de Villamil ·Jul 26, 2017 IT DEPENDS… I often get technical questions either at work, on IRC, or via any other medium I can think about. Whatever the topic, the answer remains the same. It depends. "It depends" is the kind of answer that pisses people off, the kind of answer that makes me sound like a… Startup 1 min read -------------------------------------------------------------------------------- Fred de Villamil ·Jun 18, 2017 DESIGNING THE PERFECT ELASTICSEARCH CLUSTER: THE (ALMOST) DEFINITIVE GUIDE This article and much more is now part of my FREE EBOOK Running Elasticsearch for Fun and Profit available on Github. Fork it, star it, open issues and send PRs! Ever since I started to write about operating Elasticsearch, I have answered many questions about cluster design. Every one of… Elasticsearch 25 min read -------------------------------------------------------------------------------- Fred de Villamil ·May 20, 2017 MY JOURNEY FROM MANAGER TO LEADER I started my career doing a terrible mistake. I wanted to be a manager before I even got the chance to be managed. Well, that’s wrong. I didn’t want to be a manager. I loved tech, loved getting my hands dirty, and loved getting things done. But I listened to… Management 9 min read -------------------------------------------------------------------------------- Fred de Villamil ·May 18, 2017 USING HDFS AS A BACKUP STORAGE I recently started to think about how I could implement a self hosted, scalable, reliable backend infrastructure. Between 15 years of photos, my music, my family's computer backups and many important files, I have about 30TB of data I don't want to lose. With malwares, backup is the biggest problem… Big Data 4 min read -------------------------------------------------------------------------------- Fred de Villamil ·May 17, 2017 GETTING OVER A JOB INTERVIEW THAT WENT WRONG ANSWERING THESE 4 SIMPLE QUESTIONS A while ago, I started interviewing to become a SRE manager at Google. I got rejected at the end of the screening call with the recruiter because I was not technically skilled enough to go further in the process. When I hanged up the phone, I was devastated. It was… Interview 3 min read -------------------------------------------------------------------------------- Fred de Villamil ·May 16, 2017 RESIZING YOUR ELASTICSEARCH INDEXES IN PRODUCTION This article and much more is now part of my FREE EBOOK Running Elasticsearch for Fun and Profit available on Github. Fork it, star it, open issues and send PRs! One of the burdens with managing thousands of living indexes within the same Elasticsearch cluster is keeping your shards manageable. … Elasticsearch 2 min read Get started Sign In Random thoughts of a geopolitics freak turned CTO on startups, leadership, and productivity Follow EDITORS FRED DE VILLAMIL I can perform under pressure, but not Bohemian Rhapsody. CTO at Data Impact by NielsenIQ. Ex VP @Ledger & @Aircall. Follow Help Status Writers Blog Careers Privacy Terms About Knowable To make Medium work, we log user data. By using Medium, you agree to our Privacy Policy, including cookie policy.