The Netherlands follows the EU eIDAS regulation. Electronic signatures are legally recognised as long as you choose the right type for the document.
Short answer: yes
Electronic signatures are valid in the EU under eIDAS. A digitally signed contract generally has the same legal effect as a handwritten signature.
When is it sufficient?
For freelancer contracts (overeenkomst van opdracht), quotes and NDAs, a simple electronic signature (SES) is usually enough. SmartWerk stores the signed PDF with a timestamp.
When do you need more?
Real estate transactions, notarial deeds and some government forms often require a qualified electronic signature (QES) — for example via DigiD or an EU-qualified certificate.
Best practices
Use a platform with an audit trail, timestamp and PDF archive. Keep a record of who signed which version and when — useful in disputes or sham self-employment reviews.