A loanword from English, used widely in business, gaming, and everyday contexts to refer to a learned ability or expertise.
He has excellent communication skills.
In this game, you can learn new skills.
I want to acquire programming skills.
I practice every day to hone my skills.
I can make use of my English skills in this job.
He has a high level of design skill.
スキル is a casual loanword for a specific learned skill, while 技術力 emphasizes the overall strength or level of technical ability, often of a company or nation.
skillful; skilled
upskilling; improving one's skills
ability to let things slide; skill of not getting upset by ignoring negativity
soft skills; people skills; interpersonal skills
skilled labor shortage
surplus of skilled labor; overqualification
social skill
skill transfer
Borrowed from English 'skill'.