System Engineer OR SystemS Engineer

Which is correct - System Engineer OR SystemS Engineer. I have seen many going for the former. But the latter is correct as per INCOSE.

Talking about INCOSE and SE, I got this nice chart from INCOSE. It lists the skills and qualities needed by Systems Engineers...

Skills and Qualities Needed by Systems Engineers

• Good math skills
• Strong time management skills
• Aptitude for systems thinking
• Good common sense
• A strong desire for organization and efficiency
• Excellent communication/salesmanship
• Creative problem solving
• Quantitative skills
• Technical competency
• Continuous drive for improvement
• Resourcefulness
• Listening skills
• Negotiation skills
• Diplomacy
• Patience
• Ability to adapt to many environments, wear many hats and interact with a diverse group of individuals
• Inquisitive mind
• Continuous desire to learn
• Leadership skills
• Ethics