Anglesey council is considering cutting black bin collections to just once a month.
The authority is also looking at bringing bin rounds back in house, having just approved appointing a £48,000-a-year waste czar to come up with ideas of how to save money on the service.
The current contract with Biffa comes to an end in March 2021, and the officer will be expected to either find another firm to do the work or make moves towards having the council run it itself.
The cost of waste collection on the island was around £3.8M in 2017/18 alone, with the Temporary Project Manager set to be offered a contract until April 2021.
Cllr Bob Parry, the waste management portfolio holder, said during the meeting in Llangefni : "We're very proud of having recycled 73% of items last year, becoming the best performing in Wales in this regard.
"The current contract has ran well in my view, but as an authority we don't have the capacity to take on the monumental procurement task. It's sheer scale means that we have to get it right first time.
"The temporary officer will look at the present service, how it can be improved and to consider whether we stick with three weekly or move to monthly black bin collections."
A report presented to the authority's Executive this morning, noted: "Experience from the previous procurement process (2005/6 – 2006/7) showed that significant project management time and support (legal, technical and financial) was required to procure a contract of this size and complexity.
"The feedback from the Council’s Procurement Section was that a project manager should be appointed for a project of this scale as there is no existing available resource within its unit."
Anglesey's Chief Waste Management Officer, Meirion Edwards, concluded: "Taking on the service ourselves is an option, but is one of several on the table.
"We'll also look at continuing to collect every three weeks or monthly, but also looking at things like street cleaning and how we do it."
Conwy became the first authority in Wales to introduce monthly black bin collections last month, with waste destined for landfill will now only be collected once a month - saving £390,000 a year for the authority.
It was noted that the outlay of employing a specialist officer would be cheaper than taking on an external consultant but was necessary due to austerity having taken its toll on staff numbers and the capacity within the council for its own officers to carry out the work.
However, the report also acknowledges that the new post-holder, set to cost £48,000 a year to the authority, could also take on other tasks such as school modernisation, adults transformation, a new school dinners contract and other various corporate priorities.
Cllr Bob Parry concluded, "This is a service that has to be in place by April 2021 as we can't do without a waste collection service, which is something received by everyone on the island."
The report was unanimously approved by members of the Executive.
