The 23-year-old, who joins from Weston-Super-Mare, turned down interest from Swedish top-flight side Ostersunds to join the Spitfires.
Eastleigh boss Chris Todd said: "I am excited to have Scott join the squad.
"He is an incredibly hungry individual who is looking to succeed in the game and has a huge desire to progress with Eastleigh."
Find all the latest football transfers on our dedicated page.

Peter Dawson said he was also surprised to hear Rory McIlroy say he "probably won't watch the golf" from Rio on TV.
"Rory is entitled to his opinion but I found it disappointing," he said.
McIlroy is one of a string of players who have pulled out of the Rio Games, citing concerns over the Zika virus.
The world's top four - Jason Day, Jordan Spieth, Dustin Johnson and Northern Ireland's McIlroy - will all be missing after raising fears over the mosquito-borne virus, which has been linked to brain defects in newborn babies.
International Olympic Committee president Thomas Bach has said the withdrawals will be one of the factors taken into account when the roster of sports for the 2020 Games is confirmed next year.
The Rio Games will see golf return to the Olympics after a 112-year absence.
"We have a great competition, the players are going to have a wonderful experience and the withdrawals are restricted to players from only four countries," Dawson said.
"I am very confident golf has a place in the Olympic programme and we will do everything we can to keep it there."
The Olympics take place from 5 to 21 August, with the men's golf tournament running from 11 to 14 August.

Kym Andrew Walter, 25, of Kings Mill Lane in the town, is also charged with possessing a firearm, production of cannabis and abstracting electricity.
The incident happened on Springbank Road, in the early hours of Saturday.
Mr Walter was remanded in custody at the town's magistrates' court and is due at Leeds Crown Court on 27 October.
National League side Eastleigh have signed striker Scott Wilson on a one-year contract.
[NEXT_CONCEPT]
The absence of top players from the Olympics "isn't going to help" golf's case for staying at future Games, the president of the International Golf Federation has said.
[NEXT_CONCEPT]
A 25-year-old man has appeared in court charged with attempted murder after a gun was fired through the window of a house in Huddersfield.