In his answer to this question Dr. Monzer Kahf, Scholar in Islamic Economics & Financial Expert, stated,

As long as your work does not require you to sign, type, write or give legal advice, etc. on an interest-based contract, your work is then permissible, in sha’a Allah.

Your income is also permissible. This is because what is Haram in this regard is taking riba, giving it and writing and being a witness to it, but working in other capacities is permissible and the income is permissible by the fact that what you give in return (i.e. your work) is permissible.

May Allah guide all of us to what pleases Him!