How to level up your Java skills, become a seasoned Java developer and build a successful international career?

The March 11, 2025 episode of the “The Out of the Box Developer” received Rafael del Nero, Java Champion, Java Challengers creator and author.

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In a compelling interview, Java Champion Rafael del Nero shared valuable insights about building a successful career in Java development, emphasizing the importance of continuous learning, knowledge sharing, and strategic career planning.

Starting Out: Breaking Into Java Development #

Rafael emphasized that getting your first Java job can be challenging, and relying solely on college education isn’t enough. Here are his key recommendations for beginners:

• Go beyond college curriculum through self-study and additional courses
• Practice consistently, even if you’re not yet working with Java
• Be prepared to work twice as hard as others to stand out
• Don’t wait until you feel “fully prepared” to take opportunities

“If you wait until you are fully prepared, you’ll never take action. I would still be waiting today to speak at Java One if I had waited to feel ready.”

The Power of Knowledge Sharing #

One of the most impactful career strategies Rafael discusses is sharing knowledge. Here’s why it matters:

Benefits of Knowledge Sharing: #

• Builds your personal brand
• Creates visibility in the community
• Can lead to job opportunities
• Helps establish expertise in specific areas

“When you’re sharing knowledge and someone from a company needs to solve a specific problem, they might even hire you right at the conference”

Technical vs. Soft Skills Balance #

Rafael provides valuable insights about the balance between technical and soft skills:

For Junior Developers:

• Focus 80% on technical skills
• 20% on basic soft skills
• Maintain basic politeness and willingness to learn

For Mid-level to Senior Developers:

• Aim for 50-50 balance between technical and soft skills
• Focus on communication with non-technical stakeholders
• Develop business understanding
• Work on leadership capabilities

Becoming a Java Champion #

Rafael shares the key components for becoming a Java Champion:

1. Consistent Knowledge Sharing

   • Create content in English
   • Maintain focus on specific areas
   • Build visibility among existing Java Champions

2. Community Impact

   • Contribute to open source projects
   • Write articles or books
   • Give talks at conferences
   • Lead Java community groups

3. Networking

   • Attend international conferences
   • Connect with other Java Champions
   • Maintain humility and respect in interactions

“The skills you develop to become a Java Champion are invaluable - the title is just recognition of the impact you’ve already made.”

Key Takeaways #

1. Never stop learning - consistent small steps lead to compound growth
2. Break your own limitations - don’t let others’ or your own perceived limitations hold you back
3. Focus on both technical and soft skills as you advance
4. Share knowledge strategically and consistently
5. Build meaningful connections in the community

Remember, as Rafael says: “It’s better to take small, consistent steps than to try catching up after long periods of stagnation.”

Want to learn more from Rafael? Check out his Java Challengers project and connect with him for career strategy conversations

YouTube link to the original session