Tech Lead Journal

• #220 - From Hibernate to Quarkus: Modernizing Java for Cloud-Native - Sanne Grinovero

  In this special in-person episode, Sanne Grinovero shares the story of Java’s evolution from his unique perspective as a long-time open-source contributor. He shares his 16-year career journey at Red Hat, highlighting his amazing work on key projects like Hibernate, Infinispan, and especially the creation of Quarkus. His career trajectory, from a student who initially disliked Java’s complexity to a leading figure in its modernization, shows the transformative power of open source.A key part of the conversation focuses on how technical challenges spark innovation. Sanne explains how the task of making the popular Hibernate framework compatible with GraalVM’s limitations led directly to the birth of Quarkus. This journey tells the bigger story of how Java adapted for cloud-native development, ensuring it continues to be a top choice for developers seeking high performance and a great developer experience.  Timestamps:(00:00:00) Trailer & Intro(00:02:16) Career Turning Points(00:04:52) Winning an Innovation Award(00:06:35) Java Heroes(00:08:04) Working as a Consultant(00:09:56) Taking a Massive Pay Cut to Work on Open Source(00:10:59) Contributing to Big Open Source as a Youngster(00:12:53) State of Hibernate Project(00:15:15) Spring Boot(00:16:54) Making Hibernate Work on GraalVM(00:21:05) GraalVM Limitations for Running Hibernate(00:26:09) Java for Cloud Native Application(00:28:04) Quarkus vs Spring Boot(00:33:21) JRebel & Quarkus(00:34:35) Java vs New Programming Languages(00:39:22) The ORM Dilemma(00:42:38) Some Hibernate Design Pattern Tips(00:46:40) Getting Paid Working on Open Source(00:48:41) Hibernate License Change(00:51:05) Intellectual Property & Meaningful Contributions(00:52:52) AI Usage & Copyright in Open Source(00:55:21) Biggest Challenge Working in a Big Open Source(00:56:08) Politics in Open Source(00:58:32) Security Risks in Open Source(01:02:25) Donating Hibernate to Commonhaus Foundation(01:04:49) The Future of Red Hat(01:06:39) 3 Tech Lead Wisdom_____Sanne Grinovero’s BioSanne Grinovero has been a member of the Hibernate team for 10 years; today he leads this project in his role of Sr. Principal Software Engineer at Red Hat, while also working on Quarkus as a founding R&D engineer.Deeply interested in solving performance and concurrency challenges around data access, scalability, and exploring integration with new storage technologies, distributed systems and search engines.Working on Hibernate features led him to contribute to related open source technologies; most notably to Apache Lucene and Elasticsearch, Infinispan and JGroups, ANTLR, WildFly, various JDBC drivers, the OpenJDK and more recently getting interested in GraalVM.After being challenged to reduce memory consumption and improve bootstrap times of Hibernate, Sanne worked as part of a small R&D team at Red Hat on some ideas which have evolved into what is known today as Quarkus.Follow Sanne:LinkedIn – linkedin.com/in/sannegrinoveroTwitter – twitter.com/SanneGrinoveroGitHub – github.com/sanneLike this episode?Show notes & transcript: techleadjournal.dev/episodes/220.Follow @techleadjournal on LinkedIn, Twitter, and Instagram.Buy me a coffee or become a patron.

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  1:15:06
• #219 - Why Learning Systems Thinking is Essential in Tech - Diana Montalion

  Tired of feeling like your team is stuck in a cycle of frustration and miscommunication? What if the biggest blocker in your tech career isn’t your code, but your thinking?That’s the core premise of Systems Thinking, and in this episode, Diana Montalion (author of “Learning Systems Thinking”) shares the practical insights and mental models to help you make that essential shift.Key topics discussed:What systems thinking is and its core principlesThe difference between linear thinking (which we need) and systems thinking (which we’re missing)Why building a metaphorical “car boat” is a failure of “conceptual integrity” and how to avoid itHow to break free from a “change-my-mind” culture and improve our collaborationThe critical skill of metacognition: why you must understand your own thinking before you can influence othersPractical ways to foster collective systems thinking and bridge the gap between Product and TechUsing modeling and visual tools to create alignment and solve the right problemsHow AI’s inability to handle true inference makes human systems thinking more valuable than everWhether you’re a software engineer, architect, team leader, or anyone tackling complex problems, learn why your technical skills alone are not enough and how a shift in your thinking can revolutionize your work and career.  Timestamps:(00:00:00) Trailer & Intro(00:02:23) Career Turning Points(00:04:35) Writing Learning Systems Thinking(00:08:53) Definition of Systems Thinking(00:13:39) Systems Thinking vs Linear Thinking(00:19:31) Definition of System(O0:24:13) Conceptual Integrity(00:30:02) Practices to Improve Our Systems Thinking(00:36:21) Metacognition and Self-Awareness(00:44:42) Practices to Improve Our Collective Systems Thinking(00:53:04) Collaboration with Consent(00:55:29) The Importance of Modeling(01:02:20) AI Usage and System Thinking(01:11:04) 3 Tech Lead Wisdom_____Diana Montalion’s BioDiana Montalion is a systems architect, learning facilitator, and founder of Mentrix Group, with over 20 years of experience delivering transformative software initiatives for organizations like Stanford, The Gates Foundation, The Economist, and The Wikimedia Foundation. As the author of Learning Systems Thinking: Essential Nonlinear Skills & Practices for Software Professionals (O’Reilly), she empowers tech professionals to navigate complex systems through practices like systemic reasoning, metacognition, and collaborative modeling.Follow Diana:LinkedIn – linkedin.com/in/dianamontalionWebsite – montalion.comTwitter – @dianamontalionMastodon - @[email protected] - @mentrix.bsky.socialMentrix Group – https://mentrixgroup.com/SystemCrafters Collective – https://mentrix.systems/📚 Learning Systems Thinking – oreilly.com/library/view/learning-systems-thinking/9781098151324/Our SponsorsManning Publications is a premier publisher of technical books on computer and software development topics for both experienced developers and new learners alike. Manning prides itself on being independently owned and operated, and for paving the way for innovative initiatives, such as early access book content and protection-free PDF formats that are now industry standard.Get a 40% discount for Tech Lead Journal listeners by using the code techlead24 for all products in all formats.Like this episode?Show notes & transcript: techleadjournal.dev/episodes/219.Follow @techleadjournal on LinkedIn, Twitter, and Instagram.Buy me a coffee or become a patron.

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  1:16:08
• #218 - The PRFAQ Framework: Amazon's Secret to Successful Innovations - Marcelo Calbucci

  Understand the secret behind one of Amazon’s most powerful innovation tools and learn how you can use it to drive clarity, alignment, and better decision-making.In this episode, Marcelo Calbucci, author of “The PRFAQ Framework,” dives deep into the PRFAQ (Press Release & Frequently Asked Questions) framework, a unique approach that combines narrative storytelling and strategic FAQs to crystallize initiative vision and strategy.Key topics discussed:What the PRFAQ framework is — and why it’s more than just a product management toolHow PRFAQ brings Amazon’s “working backwards” philosophy to lifeThe structure of a PRFAQ: press release, customer FAQs, and internal FAQsWhy storytelling and precise writing are essential for strategic vision and alignmentOvercoming resistance: making writing and reading strategic documents part of your culturePractical tips for adopting PRFAQ in any organization, large or smallCommon mistakes to avoid when implementing PRFAQThe importance of collaborative feedback in the PRFAQ processWhether you’re launching a startup, building a new product, or transforming internal processes, this episode breaks down how this method can help you avoid common pitfalls and deliver results that matter.Timestamps:(00:00) Trailer & Intro(02:10) Career Turning Points(03:56) The PRFAQ Framework(05:19) PRFAQ is Forward-Looking(07:09) Working Backwards & PRFAQ(07:58) Why Writing a Book About PRFAQ(11:37) PRFAQ: Why Less Adoption Than Other Frameworks?(14:40) Writing PRFAQ vs Speed of Execution(16:28) The PRFAQ Template(19:05) The Six Page of PRFAQ(21:24) Precise Writing(25:09) The Strict Guidelines of PRFAQ(26:40) PRFAQ: Press Release(29:56) The Power of Narratives / Storytelling(32:03) PRFAQ: Customer FAQ(34:15) Jobs-to-Be-Done vs. Personas(36:46) PRFAQ: Internal FAQ(39:34) How to Come Up with the Internal FAQs(40:49) The Level of Details in the FAQs(43:20) PRFAQ: Appendix(45:27) Advice on Starting PRFAQ(46:11) Adapting from the Amazon’s PRFAQ(48:55) Common Mistakes when Adopting PRFAQ(50:05) Providing Good Feedback for PRFAQ(51:18) 3 Tech Lead Wisdom_____Marcelo Calbucci’s BioMarcelo Calbucci is an entrepreneur, innovator, and technologist. He’s been building software products for over thirty years, having sold his first software at age fourteen. He has worked at Microsoft (Exchange Server & Bing) and Amazon (People eXperience & Technology), leading software engineering, product, data science, and UX. He is an author of The PRFAQ Framework.Follow Marcelo Calbucci:LinkedIn – linkedin.com/in/marcelocalbucciTwitter / X – @calbucciEmail – [email protected]📚 The PRFAQ Framework – theprfaq.comOur SponsorsManning Publications is a premier publisher of technical books on computer and software development topics for both experienced developers and new learners alike. Manning prides itself on being independently owned and operated, and for paving the way for innovative initiatives, such as early access book content and protection-free PDF formats that are now industry standard.Get a 40% discount for Tech Lead Journal listeners by using the code techlead24 for all products in all formats.Like this episode?Show notes & transcript: techleadjournal.dev/episodes/218.Follow @techleadjournal on LinkedIn, Twitter, and Instagram.Buy me a coffee or become a patron.

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  53:55
• #217 - Impact Intelligence: Deliver Real Business Impact from Your Initiatives - Sriram Narayan

  (08:54) Brought to you by Swimm.io.⁠⁠⁠⁠⁠⁠⁠⁠⁠⁠Start modernizing your mainframe faster with ⁠⁠⁠Swimm⁠⁠⁠. Understand the what, why, and how of your mainframe code. Use AI to uncover critical code insights for seamless migration, refactoring, or system replacement.Why do so many well-intentioned initiatives fail to move the needle?In this episode, Sriram Narayan, author of ‘Impact Intelligence,’ reveals how to ensure your efforts translate into real, measurable business impact. Stop shooting in the dark and start delivering tangible results that matter.Key topics discussed:What “Impact Intelligence” means and why it is crucial for any businessThe common pitfalls: Why many tech and digital initiatives fail to achieve their intended business impactThe common misconceptions about “outcomes” in tech and product teams, and why delivery or adoption metrics are not enoughSurprising insights from the non-profit sector on rigorous impact measurement practicesUnderstanding the difference between immediate (proximate) results and long-term (downstream) impactHow to visualize and map your initiatives to core business goals using an “Impact Network”The critical challenge of “Impact Attribution” – how to know if your project actually moved the needleAddressing “Measurement Debt” — if you can’t measure it, should you build it?The iRex framework: A modular approach to building your organization’s Impact IntelligenceBalancing speed vs impact: Not just shipping features, but delivering measurable business resultsWhether you’re a tech leader, product manager, or executive, this episode will equip you with actionable frameworks and real-world examples to focus on what really matters: delivering measurable, meaningful business impact.Tune in and start building your organization’s Impact Intelligence muscle today!  Timestamps:(00:00) Trailer & Intro(02:22) Career Turning Points(10:52) Impact Intelligence(11:40) The Importance of Impact Intelligence(15:09) Understanding Business Impact(19:11) Learning & Adopting from the NGO Space(22:35) Impact Feedback Loops(26:25) Proximate vs Downstream Impact(28:20) Building an Impact Network(36:47) Differences with OKR(38:12) Impact Attribution(44:51) The Importance of Measurement & Measurement Debt(48:31) iRex Framework(54:26) Balancing Between Speed of Delivery and Business Impact(57:32) 1 Tech lead Wisdom_____Sriram Narayan’s BioSriram Narayan is an independent consultant in the area of impact intelligence. He also helps clients improve digital, product and tech performance.Pearson published his first book, Agile IT Org Design , in 2015. It won endorsements from the then CIO of The Vanguard Group and the then MD of Consumer Digital at Lloyds Bank.Sriram has served in product, technology, innovation, and transformation leadership roles since 2006. He has also helped some of his clients move to a product operating model. His write-up of the topic in 2018 has since become a de facto industry reference. His other writings and talks are available at agileorgdesign.comFollow Sriram:LinkedIn – linkedin.com/in/mrsriramnarayanBluesky - @srny.bsky.socialTwitter / X – @sriramnarayan📚 Impact Intelligence Website – impactintel.net📚 Agile Org Design Website – agileorgdesign.comEmail – [email protected] SponsorsManning Publications is a premier publisher of technical books on computer and software development topics for both experienced developers and new learners alike. Manning prides itself on being independently owned and operated, and for paving the way for innovative initiatives, such as early access book content and protection-free PDF formats that are now industry standard.Get a 40% discount for Tech Lead Journal listeners by using the code techlead24 for all products in all formats.Like this episode?Show notes & transcript: techleadjournal.dev/episodes/217.Follow @techleadjournal on LinkedIn, Twitter, and Instagram.Buy me a coffee or become a patron.

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  1:01:27
• #216 - Practical Data Privacy: Enhancing Privacy and Security in Your Application - Katharine Jarmul

  (05:46) Brought to you by Swimm.io.⁠⁠⁠⁠⁠⁠⁠⁠Start modernizing your mainframe faster with ⁠⁠Swimm⁠⁠.Understand the what, why, and how of your mainframe code.Use AI to uncover critical code insights for seamless migration, refactoring, or system replacement.Feeling uneasy about how your personal data is used, and wondering if companies are doing enough to protect it?In this episode, Katharine Jarmul, author of “Practical Data Privacy,” dives deep into one of the most critical and rapidly evolving topics today. Discover how data privacy impacts you as a user and what organizations should be doing to protect your information responsibly. Learn why simply blaming users isn’t the answer and how we can build a more trustworthy technological future.Key topics discussed:Understanding Data Privacy: The meaning of data privacy and how it links to autonomy, trust, and choiceMore Than Just PII: The full scope of sensitive data needing protectionThe “Spying” Phone Feeling: How too much data collection can be used to infer sensitive detailsOrganizational Responsibility: Shifting data protection burden from users to companies building and deploying technologyPrivacy by Design: Embedding privacy into tech right from the startEssential Data Governance: Why knowing your data is key to privacyPractical Privacy Techniques: Pseudonymization, anonymization, data masking, and morePrivacy Enhancing Technologies: Exploring tools like differential privacy, federated learning, and encrypted computationAI & Privacy Challenges: Using AI responsibly with sensitive informationNavigating Privacy Laws: Understanding GDPR, data sovereignty, and global regulationsBuilding a Privacy Culture: Fostering a culture of learning, psychological safety, and risk awareness around privacyTune in to learn how we can build a safer, more responsible, and trustworthy digital future for everyone.  Timestamps:(00:00) Trailer & Intro(01:20) Career Turning Points(02:14) Data Privacy Landscape(07:45) PII (Personally Identifiable Information)(11:33) Data Privacy Risk in Current Technologies(14:13) Data Utility vs Privacy(19:01) Privacy by Design(24:19) Data Governance(29:06) Retention Schedule(31:10) Data Privacy Practices & Techniques(34:09) Privacy Enhancing Technologies(38:52) Fostering Data Privacy Practice & Culture(47:05) The Legal Aspects of Data Privacy(51:10) AI and Data Privacy(56:08) 3 Tech Lead Wisdom_____Katharine Jarmul’s BioKatharine Jarmul is a Principal Data Scientist at Thoughtworks Germany and author of the recent O’Reilly book Practical Data Privacy . Previously, she has held numerous roles at large companies and startups in the US and Germany, implementing data processing and machine learning systems with a focus on reliability, testability, privacy and security.She is a passionate and internationally recognized data scientist, programmer, and lecturer. Katharine is also a frequent keynote speaker at international software and AI conferences.Follow Katharine:LinkedIn – linkedin.com/in/katharinejarmulNewsletter – https://probablyprivate.comYouTube – @ProbablyPrivate📚 Practical Data Privacy: Enhancing Privacy and Security in Data – https://www.oreilly.com/library/view/practical-data-privacy/9781098129453/Our SponsorsManning Publications is a premier publisher of technical books on computer and software development topics for both experienced developers and new learners alike. Manning prides itself on being independently owned and operated, and for paving the way for innovative initiatives, such as early access book content and protection-free PDF formats that are now industry standard.Get a 40% discount for Tech Lead Journal listeners by using the code techlead24 for all products in all formats.Like this episode?Show notes & transcript: techleadjournal.dev/episodes/216.Follow @techleadjournal on LinkedIn, Twitter, and Instagram.Buy me a coffee or become a patron.

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  1:06:57

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