I heard that Nielsen had vacancies through an ex-colleague in a previous organization. I emailed my resume with a cover letter to the id given by my contact. Within a week, an HR person contacted me to fix up a telephonic interview. This was a general personal interview. A fortnight after this, the HR manager called to say that a domain expert from the region will be calling me for a technical interview. Over the next fortnight, my technical interview was done and I recd an email with an offer letter.