English to Polish translator needed – fast turnaround and accuracy needed, located in Europe

We are looking for an English-Polish translator who has flexible working hours (in particular open for weekend work) and is able to handle fast turnaround times (3000 – 6000 words translated ideally in less than 12 hours). We do not have a specific project at the moment, but we would like to establish an ongoing relationship with up to ~10 translations per month on an ad-hoc basis. Compensation up for discussion.