A job post for an industrial designer bemoans the lack of innovation in the computer hardware space, before appealing to a candidate with experience shipping hardware products.
"Valve is traditionally a software company. Open platforms like the PC and Mac are important to us, as they enable us and our partners to have a robust and direct relationship with customers," reads the job post.
"We're frustrated by the lack of innovation in the computer hardware space though, so we're jumping in.
"Even basic input, the keyboard and mouse, haven't really changed in any meaningful way over the years.
"There's a real void in the marketplace, and opportunities to create compelling user experiences are being overlooked."
Successful candidates are also required to have "6+ years of professional experience shipping world-class, high-tech hardware products".
It is possible the job listing could have something to do with the rumoured Steam Box console, or a new line of gaming accessories.
Rumours of a hybrid machine compatible with PC software and Steam games came to light in March.
A prototype version of the Steam Box, meanwhile, appeared on a Valve employee's Twitter account in 2011.
Its specifications matched those of an earlier report which suggested that Valve's PC/console hybrid would feature a Core i7 processor, 8GB of RAM and an unspecified NVIDIA graphics card.
Valve reportedly held meetings with potential launch partners at the Consumer Electronics Show in January. The possibility of the platform hosting rival download services such as EA's Origin is said to have been discussed.
Valve's Gabe Newell suggested that the firm would manufacture gaming hardware as a last resort.
Valve recently denied reports that it planned to team with Apple.
Watch a trailer for recent Valve release Counter Strike: Global Offensive below: