Southend have appointed Steve Tilson as manager until the end of the season, with former Leyton Orient boss Paul Brush continuing as first-team coach.
Tilson has been a huge success since taking over in November
"This team has demonstrated an ability to successfully manage and motivate the team," a club statement read.
"The board sees it as appropriate that they should continue to provide continuity in the current campaign.
"The board is satisfied that together they will provide the success in the league that this club now needs."
Former Shrimpers player Tilson had been caretaker-manager since November and has become popular with fans.
He took over following former boss Steve Wignall's sacking and a brief caretaker spell under Dave Webb.