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Here is my presentation webinar on the Arrow Core for experienced Java developers, who are unfamiliar with functional programming (FP) and also migrating from Java to Kotlin. YouTube – I am a technical leader / principal engineer. It is part of daily duty to improve the working lives of software developers in teams, especially where […]

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Engineering Catchup – Taming Complexity: Functional Error Handling with Arrow.kt November 2025 Friday, 21 November 2025  12:00 – 12:30Time zone: Europe/LondonGoogle Meet joining info Video call link: https://meet.google.com/tjs-rkdu-nfm   Level: Basic level of Kotlin programming (intermediate Java required)     * Beyond Imperative* Curious Java Developer* Heard about FP blocked by intimidation or eco-system* For […]

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My name is Peter Pilgrim, Principal Engineer, Lead Developer and I am looking for next contract engagement immediately. My primary strength skills are Java software engineering with Kotlin server-side programming. The tech stack in my day-to-day is: Java 21, Spring Boot 3, Kubernetes, Docker, AWS, Azure, Angular, Kotlin, Scala, Gradle, Maven, GitHub Actions, Jenkins, MongoDB, […]

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I have been away for a while. For those who don’t know me, I am Peter Pilgrim, a senior manager, a Java Champion, a long time software engineer with over 25 years experience. For the later half of 2021, I am creating a new video course about Functional Programming. I want to talk about Kotlin […]

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Wednesday 29th, July 2020 In this week’s episode, I present a Very Brief Introduction to Apache POI , creating the simplest Microsoft Excel spreadsheet ever. Here is an additional bonus, I’m using Kotlin, the programming language. I also talk about why spreadsheets are so sexy man? If you know how to work with spreadsheets in […]

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Test-Driven Development using Kotlin (DELUXE EDITION) by Peter Pilgrim Java Champion I have now expanded this commercial video online course to over 6 hours of content. The megamix course is now rebranded as Test-Driven Development using Kotlin (DELUXE EDITION) by Peter Pilgrim Java Champion and it is available on Vimeo.           […]

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NHS COVID-19 Coupons Free access to all of my Vimeo On-Demand online courses in 2020 if you have a family member that works in the UK National Health Service.     This can be your mummy, daddy, auntie, uncle, cousins, grandparents… and even you, yourself, if you currently work for the NHS. Please Just send […]

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It’s the month of March and we are mad hatters. Here is a crazy huge discount code for my online-course on Vimeo On-Demand     MarchHare2020 75% OFF! Test-Driven Development using Kotlin *             *Offers subject to terms and condition. You need a Vimeo login account to benefit. Authors / […]

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ANNOUNCEMENT NEW COURSE I have recorded video online lecture, online course, if you will. It is called Test-Driven Development using Kotlin by Peter Pilgrim Java Champion and it is available on Vimeo.     STOP PRESS My course is now also available at Teachable (PEAT School).   Enroll in Course   Feedback is very much […]