Matt Paterson has left Oxford City to move to Park View Road.
He scored 27 goals last season, and has begun the new campaign strongly - scoring six times in the league so far.
Manager Steve King has been looking for an out-and-out goalscorer for a while and hopes Paterson can prove the difference.
On the club’s website, he called the former Scotland U19 international “the striker I have been waiting for”.
Welling are in great form an sit in third place going into the weekend.
They can put pressure on leaders Billericay with a home victory over Slough Town on Saturday.
But they must tackle that match without one of the players who has been so important to their recent fantastic run.
Craig Braham-Barrett has been called up by the Montserrat Football Association and will play for his country on Sunday in the Concacaf Nations League.