Software Craftsmanship @Code Camp Festival 2022.pdf
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Decades ago, IT started as a single engineering practice, but over the years it grew increasingly fragmented. The overspecialization we face today, in the context of a management-first agile transformation leads to a lack of responsibility, blaming games, repeated patching, painful communication overhead, and fulminating costs. The software craftsmanship movement is rising in this post-agile world with professionals that take control of their careers and continuously learn in the pursuit of mastery. But changing mindset requires determined team efforts and communities, especially when working remotely. What techniques and tricks can you use to grow such a culture of learning in your team? Find out from the founder and lead of one of the largest software craftsmanship communities in the world. This talk is about technical culture and attitude.
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Software Craftsmanship @Code Camp Festival 2022.pdf
- 1. Software Craftsmanship – Growing a Technical Culture victor.rentea@gmail.com ♦ ♦ @victorrentea ♦ VictorRentea.ro
- 2. Hi, I'm Victor Rentea Java Champion – drinking since 2006 Trainer – 3000+ devs in 80+ companies Speaker – Conferences & Meetups Hibernate Spring FP Java Performance Secure Coding Reactive Architecture Clean Code Unit Testing
- 3. (paid stuff) Hibernate Spring Advanced FP Architecture Clean Code Unit Testing Masterclass Company Training Video Lessons @victorrentea VictorRentea.ro victorrentea@gmail.com Java Performance Secure Coding Reactive victorrentea.ro/community Join My Community Bucharest Software Craftsmanship Community (4000+ devs) YouTube Channel youtube.com/user/vrentea
- 4. VictorRentea.ro 5 A bit of history
- 5. VictorRentea.ro 6 At the beginning there were only Craftspersons
- 6. VictorRentea.ro 7 They had to do everything Most were women But then, it all changed… Craftsmanship Craftsperson
- 7. VictorRentea.ro 8 A Gentle Introduction to Conflicts and Toxicity in IT
- 11. VictorRentea.ro 12 Admins vs Devs Admins hate change Developer’s job is to change things Developers without admin rights on their machines Restricted software, email blocking 😶 Zip>Encrypt>Base64encode>Email Aberrations
- 13. VictorRentea.ro 14 DBA vs Dev DBA = profession invented in 2000s by Oracle “Keep everything IN DB” “DB is a detail” Conservative A (worse) Extreme: Let's rewrite it all in noSQL
- 14. VictorRentea.ro 15 Developer Island Tester DBA SysAdmin But even developers...
- 16. VictorRentea.ro 17 Isolated Communities Open vs Proprietary Languages Static vs Dynamic Languages Game studios NodeJS devs reinventing a lot
- 18. VictorRentea.ro 19 If you ask frontends...
- 19. VictorRentea.ro 20 If you ask frontends...
- 20. VictorRentea.ro 21 If you ask backends...
- 23. VictorRentea.ro 24 The Triad of Waste Android + iOS + Web Companies reimplement similar UI 3 times Different teams 3x more bugs
- 24. VictorRentea.ro 25 Sometimes, even in the same system…
- 25. VictorRentea.ro 26 Functional Programming Rocks 🤘 Sometimes, even in the same system…
- 26. VictorRentea.ro 27 Choose One 27 Procedural Object-Oriented Functional Programming Each has its pros/cons: master all and mix them to KISS
- 27. VictorRentea.ro 28 FE Dev Tester DBA SysAdmin BE Dev iOS Dev Android Dev FP Dev OOP Dev
- 28. VictorRentea.ro 29 All of this means one thing
- 30. VictorRentea.ro 31 Overspecialization Slow projects Large teams Low truck factor # developers that if you loose, the project has serious problems leads to
- 33. VictorRentea.ro 34 Collective Code Ownership You learn all aspects of your project You can help in any area You don’t delegate You control You have Power Responsibility
- 35. VictorRentea.ro 36 Don't aim to become a Full-Stack Expert ∄
- 36. VictorRentea.ro 37 A Java developer looking at npm install https://twitter.com/garrows/status/1065217184643768320
- 37. VictorRentea.ro 38 The "T" Shaped Developer eam starting point: "I" Shaped Developer
- 38. VictorRentea.ro 39 Why Full-Stack? Technologies change; learning keeps you flexible Better welded teams You are more useful, adaptable, thu$ earn mor€ Learning calms down egos
- 39. VictorRentea.ro 40 Full-Stack Life You fix the real problem, not patch over it You keep the code simple (KISS) You pick the right tools for the job You become pragmatic But you have to learn
- 41. VictorRentea.ro 42 “What to Learn next?” Master technologies of your current project Deepest learning happens on the job Study hard the bugs🐜 you find Keep looking for alternative designs
- 43. VictorRentea.ro 44 Other walls to tear down?
- 44. VictorRentea.ro 45 No Ambiguity Can Pass Through Them Humans – Developers – Machine Developers are special
- 49. VictorRentea.ro 56 Are you Agile? Yeah, but, you know, we do SCRUM… A kind of.. We have sprints Agileish, we move fast Transitioning...
- 50. What is Agile ? The Developer
- 55. VictorRentea.ro 62 Software Craftsmanship restores the focus on the lost technical practices
- 57. 64 © VictorRentea.ro a training by I will NOT ship SH*T I will only push with reliable tests I will not harm a colleague
- 60. VictorRentea.ro 67 Skills of a Craftsperson ● Talk to customers directly ● Understand the real business problem ● Propose solutions (not only coding) ● Break the problem into small user-centric stories ● Design UI flow ● Write working code ● Write automated tests to avoid regressions ● Evolve the system architecture by refactoring ● Deploy the system to the end users (“DevOps”) Classic software developer
- 61. 68 © VictorRentea.ro a training by What's my next step? ( (some ideas)
- 62. VictorRentea.ro 69 You have a bug. You reproduce it. You fix it => 😊. Write a failing Unit Test 🔴 for it! 💪 ... Then, you fix it è🟢 test
- 65. VictorRentea.ro 73 The Lack of Refactoring
- 66. VictorRentea.ro 74 Underdesign Emerging Architecture that never emerges Lack of Knowledge Lack of Skills è Lack of Practice ç
- 67. VictorRentea.ro 75 Problem The performance of your daily programming activities does not give you room to learn by making mistakes. It’s as if you’re always on stage.
- 69. VictorRentea.ro 77 But who owns your career? They don't give me time to learn. I see. 😧
- 70. VictorRentea.ro 78 Reflect on your how you Work
- 73. VictorRentea.ro 81 81 Coding Kata No Rush No Risks Aim for Perfection Reflect on HOW you work = Practice Not Production Code Refactoring Test-Driven Development Testing Legacy Code
- 76. VictorRentea.ro 90 Challenge Yourself Coding Katas: Refactoring, Testable Design New Language: TypeScript, Java, Kotlin, SQL, C#, Clojure, Swift, ... Communication: Explain stuff to [non-technical] others Reasoning: Start a pet project, contribute to Open-Source Economics: Think about starting a business
- 77. VictorRentea.ro 91 But all this requires Continuous Learning
- 78. VictorRentea.ro 92 Growing a Culture of Learning Start a book📚 club : debate 1 chapter / week Brown-bag session 🍔 – present your problem Rotate Project ↔ Hackathons 🌙 – technical or business Group Code Reviews 👨🦰👨🦱🧔🧔 Establish Communities of Practice (eg React ⚛ Guild) Motivate people to share/teach others Join a Craftsmanship Community http://victorrentea.ro/community 🌟Pair-Programming: planned or ad-hoc As a senior/lead/head/manager/CTO:
- 79. VictorRentea.ro 100 Craftsmanship means more than just loving to code But it usually starts with that
- 80. VictorRentea.ro 101 Juniors are eager to write more code Seniors can’t wait to delete it
- 82. VictorRentea.ro 103 We don’t just write code We solve problems
- 83. VictorRentea.ro 104 Take-Aways 🍔 • Study Code Smells, Clean Code & Refactoring • Write 1000 unit tests • Solve a Kata twice https://kata-log.rocks/ • Pair/Mob Program start with 2h/week • "I" shaped to "T" shaped : fuller-stack • Engage customer more
- 84. VictorRentea.ro 105 First Half Chapter 3 + links Exercises Entry-Level More books: https://victorrentea.ro/blog/books-about-technical-culture/
- 85. VictorRentea.ro 106 Thank you! Let's keep in touch Training for you: victorrentea.teachable.com ♦ For your company: VictorRentea.ro Join the largest Software Craftsmanship Community in Eastern Europe victorrentea.ro/community