"competently trained" is correct and usable in written English.
You can use it when you are talking about someone who has been trained in a specific skill or job. For example: Our team members are all competently trained in the latest software development techniques.
SERVICE Warm, competently trained.
The 2-week training duration was adequate to ensure competently trained CHEWs.
It was established by the Ministry of Health and Social Welfare (MOHSW) in 2008, following an assessment of Tanzania's existing public health and surveillance systems and recognition of the need for a competently trained public health workforce (29).
When problems arise, and referral is timely, complications can be treated in health facilities that are adequately equipped with supplies, medications and fully staffed with competently trained health workers.
As the curriculum proposal to revise the MS in Health Promotion into an MSPH moved through the university governance system, efforts were initiated to more explicitly define the competences and assessment methods needed to ensure that the totality of the curriculum provided what was needed to produce competently trained graduates.
While this study does not provide evidence that a brief training intervention can turn social workers into competent cognitive therapists, the findings do provide preliminary evidence that social workers can be trained to competently deliver targeted cognitive behavioural strategies.
In order to disseminate evidence-based psychological treatments (Clark et al., 2009; McHugh & Barlow, 2010; Shafran et al., 2009), psychotherapists need to be trained to deliver treatments competently.
Surgeons need to be trained if they are to competently and effectively use innovative products and it may be preferable to have this training based at a local hospital rather than provided to individual surgeons in more exotic locations.
As automation has increased, there has developed a shortage of technically trained personnel to implement these technologies competently.
Students are trained so that they can subsequently perform these skills competently and confidently on patients.
Audi already has an autonomous test car here at CES this year – it's a Q7 with AI on board that has been trained for only four days, but is already driving itself competently.
