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Leon Pennings

25 years modeling domains, designing and implementing java applications in enterprise & startups. Helping teams build systems that evolve, not explode. DM me if you want clarity before chaos.

Location Zuid-Holland, The Netherlands Joined Joined on  Email address leon.pennings@gmail.com

Education

Eindhoven University of Technology

Work

Java Solutions Architect and Software Engineer

Why We Measure Everything in Software Except the One Thing That Matters Most
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Why We Measure Everything in Software Except the One Thing That Matters Most

#softwareengineering #qa #java #softwarequality
Comments
4 min read

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How to Build Long-Living Software Systems
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How to Build Long-Living Software Systems

#softwareengineering #richdomainmodels #techleadership #longlivingsoftware
Comments
7 min read
Java Records: A Liability in Disguise, Not the Asset They Promise
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Java Records: A Liability in Disguise, Not the Asset They Promise

#java #softwareengineering #richdomainmodels #enterprisesoftware
Comments 4
5 min read
The Toyota Way and Software Development
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The Toyota Way and Software Development

#softwareengineering #softwarequality #richdomainmodels #thetoyotaway
1
Comments 2
4 min read
Smarter Software Architecture Builds Smarter Teams
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Smarter Software Architecture Builds Smarter Teams

#softwareengineering #sharedresponsibility #agileteams #efficientteams
Comments
4 min read
Dependency Injection: The Anti-Pattern That Killed Object-Oriented Design and Won
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Dependency Injection: The Anti-Pattern That Killed Object-Oriented Design and Won

#softwareengineering #java #dependencyinjection #ejb2
Comments
9 min read
Why Enterprises Should Rethink JavaScript Frameworks — and Look at GWT Again
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Why Enterprises Should Rethink JavaScript Frameworks — and Look at GWT Again

#java #ui #softwareengineering #webdev
Comments
4 min read
Why GWT Remains the Most Coherent UI Framework for a Java Backend
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Why GWT Remains the Most Coherent UI Framework for a Java Backend

#java #softwareengineering #gwt #nohype
Comments
6 min read
Merge Requests Are a Cargo Cult - It’s Time to Stop Pretending They Improve Quality
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Merge Requests Are a Cargo Cult - It’s Time to Stop Pretending They Improve Quality

#softwareengineering #ci #softwarequality #stopdoingstartthinking
2
Comments 6
5 min read
From Continuous Inspection Back to Continuous Integration: Amplify Your Development Teams
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From Continuous Inspection Back to Continuous Integration: Amplify Your Development Teams

#softwareengineering #ci #softwarequality #softwaredevelopment
Comments
5 min read
Why IT Is an Expensive Mess — And Why Nobody Inside IT Notices
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Why IT Is an Expensive Mess — And Why Nobody Inside IT Notices

#softwareengineering #architecture #techdebt #domaindrivendesign
Comments
7 min read
Why Lombok Isn’t Saving You Code — It’s Costing You a Design
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Why Lombok Isn’t Saving You Code — It’s Costing You a Design

#softwareengineering #lombok #boilerplatecode #startdesigning
Comments
7 min read
The Duplication Paradox: How to Master Maintenance and Expedite Knowledge Transfer
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The Duplication Paradox: How to Master Maintenance and Expedite Knowledge Transfer

#softwareengineering #softwaremaintenance #richdomainmodels #ddd
Comments
5 min read
The Hidden Economics of Development Approaches - Framework driven vs Domain driven
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The Hidden Economics of Development Approaches - Framework driven vs Domain driven

#softwareengineering #softwaredevelopment #java #continuousobsolescence
1
Comments 4
6 min read
Still Reaching for Spring? Then You Might Still Think Happy Meals Are Fine Dining.
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Still Reaching for Spring? Then You Might Still Think Happy Meals Are Fine Dining.

#softwareengineering #architecture #spring #happymeal
Comments
4 min read
The TDD Trap: How Test-First Becomes Bad Design Forever in Most Teams
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The TDD Trap: How Test-First Becomes Bad Design Forever in Most Teams

#softwareengineering #tdd #ddd #testing
7
Comments 12
5 min read
Rich Domain Model Monoliths vs. “Modern” Architectures — Are You Rich Enough to Go Modern?
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Rich Domain Model Monoliths vs. “Modern” Architectures — Are You Rich Enough to Go Modern?

#softwareengineering #ddd #microservices #eventdriven
Comments
15 min read
Software Engineering Forgot About KISS
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Software Engineering Forgot About KISS

#software #architecture #engineering
Comments
5 min read
Adaptability as the Core of Software Design
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Adaptability as the Core of Software Design

#softwareengineering #richdomainmodel #ddd #softwaredevelopment
Comments
4 min read
The Real Cost of Modern Software Development — and Why We Keep Paying It
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The Real Cost of Modern Software Development — and Why We Keep Paying It

#softwareengineering #tdd #microservices #richdomainmodels
Comments
5 min read
Improve Your Application Quality and Stability: Here’s How We Lost Focus — and How to Get It Back
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Improve Your Application Quality and Stability: Here’s How We Lost Focus — and How to Get It Back

#softwareengineering #richdomainmodels #softwaredesign #softwarequality
Comments
4 min read
Tell Me Why My Design Will Fail
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Tell Me Why My Design Will Fail

#softwareengineering #richdomainmodels #softwaredesign #oop
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5 min read
Why Software Development Is Not Assembly-Line Work
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Why Software Development Is Not Assembly-Line Work

#softwareengineering #architecture #domainmodeling #oop
Comments
5 min read
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