Team boss Simon Abadie is confident that Melker will put Tech 1 in the thick of the title fight again this season.
"Tech 1 Racing has already won four titles in 2007, 2008, 2010 and 2012 and we're more determined than ever to add another to our laurels in 2013," said Abadie, who last took a driver to the FR3.5 title in '07, when Alvaro Parente was champion.
"To achieve this we need two top-line drivers who will be able to score a big haul of points in every race. With this aim in mind signing a driver of the calibre of Nigel Melker is really good news.
"Although he's not yet 22 he already has five seasons in single-seaters under his belt. The experience he's gained in GP2 means that he arrives with enough racing skills to be on the ball in the opening races.
"Nigel proved in GP3 and Formula 3 that he was a winner, and it's up to us to give him the equipment to do the same at this level."
2013 Formula Renault 3.5 line-up so far:
Tech 1 Racing Nigel Melker TBA
Arden Caterham Pietro Fantin Antonio Felix da Costa
Fortec Motorsports Oliver Webb Stoffel Vandoorne
ISR Sergey Sirotkin TBA
Lotus TBA TBA
Carlin Jazeman Jaafar TBA
Comtec Racing TBA TBA
International Draco Racing TBA TBA
DAMS Kevin Magnussen Norman Nato
P1 Motorsport Will Stevens TBA
Pons Racing Zoel Amberg TBA
AV Formula Arthur Pic Yann Cunha
The 2015 Formula Renault 3.5 season will be notable for being the last with the French company's backing but also produced a worthy champion in Oliver Rowland. PETER MILLS evaluates this year's crop of drivers
Last year's field was extraordinary and hard to match, but the Formula Renault 3.5 grid will still have plenty of talent this season. Glenn Freeman runs through the field ahead of this weekend's season opener
Landing the Fortec seat that took rising star Robin Frijns to the 2012 FR3.5 title was already a good sign for Stoffel Vandoorne. Then McLaren took him under its wing. Peter Mills tells Vandoorne's story so far