A dependent is able to work

Permanent
Contract
Fixed term

This is provided the main applicants is conforming to their duties as a sponsored employee.

https://www.quora.com/Is-it-allowed-for-a-dependent-of-UK-Tier2-General-category-visa-to-work-in-the-UK-Is-any-additional-visa-paperwork-needed-to-be-eligible-to-work-in-the-UK

Dependents under all visa category can work, this includes student visa.

Paperwork required. 4 documents:

BRP - Biometric resident permit.
The letter that came along with the biometric permit. This letter would normally explain the condition of visa.
NI(National Insurance) number
CV.

Do emphasise when speaking to recruiters and companies that you have a dependent visa and no restrictions to work.

Ensure you have copies of your dependent visa as proof of you right to work.

For more information generally on useful websites (IT professionals) for work:

The Best Websites for IT Consultants/Contractors

For further information or if you are considering options on a dependent visa do contact Contracting, Consulting, Tier 2 General Visa's (www.mavisas.co.uk)

Switching to Tier 2 General

In addition for further information on switching from Tier 2 Dependent or any dependent visa to Tier 2 General visa do contact us at consult@mavisas.co.uk.

Thanks in advance

Mason Alexander