Manager Brian Laws cut a delighted figure after watching Chris Iwelumo's header down Southend and secure Scunthorpe's first win since the opening day.
The towering striker, formerly of Colchester, enjoyed a successful return to Essex as he secured a 1-0 with the only goal of the game in the 64th minute.
"This is a very satisfying win for us because we managed the game very well and the lads did everything I asked for," Laws said.
"Southend were really pressing quickly in the first half and we were giving the ball away too cheaply and that put us under pressure which we didn't need.
"The second half was a lot better after we had some words at half-time about keeping hold of the ball and that's what we did.
"I thought Sean McAllister was outstanding in midfield but the whole team was excellent and we managed it very well.
"The team is progressing well and if this is a sign of what is to come then it's all very positive."
Southend, who have now lost four games in a row, had the better of the first half, Ryan Leonard missing their best chance when he headed Kevan Hurst's right-wing cross straight at goalkeeper Sam Slocombe.
Michael Timlin, Freddy Eastwood and Hurst also went close from long range for the Shrimpers.
But Scunthorpe improved after the break and grabbed the only goal of the game when Southend left-back Ben Coker misdirected a defensive header into the path of Iwelumo, who nodded home from close range.
The Iron remained on top after going in front and could have doubled their lead late on when McAllister had a long-range shot impressively saved by Southend 'keeper Daniel Bentley.
Southend manager Phil Brown was left infuriated by defeat and the manner of Scunthorpe's winning goal
"Ben got too much on the header and I bet Chris couldn't believe his luck two yards out," Brown said.
"It's disappointing and in the first half I thought it was one-way traffic from us.
"If we had had someone in the six-yard box when it mattered we could easily have been two or three up.
"However, we gifted them their goal and after that our heads went down.
"That again showed the character I think we're lacking in this team at the moment and we need to bring one or two in to help us manage the game better.
"When Scunthorpe went in front they had that nous you need to be able to see out the game and Deon Burton certainly showed that for them when he came on.
"We've been looking for someone experienced to come in for a few weeks and we will keep on doing that now."