I finally chime in. While I would never say never (see brian_singapore comments above), finding the kind of IT infra projects you mentioned in Singapore is getting much more difficult to do.
First, over the past decade the move to actual global integration in ICT has been accelerating within MNC's. Gone are the days when the MNC's regional entities had regional responsibility for ICT projects. And the responsibility for those projects now almost always lies in a global PMO which is not located anywhere near the APAC region. MNC's ship their global people from the US and Europe to run local implementations of global projects.
Second, many technology firms that do big infra projects and managed services projects, have moved the bulk of their employees out of Singapore, with many of them ending up in the technology corridor in Malaysia. I'm not going to say anything about quality but fer sure, the costs of labor are a lot less.
There are two avenues I would pursue, given the circumstances of your partner. The first is to build a list of MNC's with a presence in Singapore, and attempt to get to Singapore via jobs offered elsewhere in the company. My experience has been that when talent is required in Asia, the MNC's import it as opposed to hiring it locally.
Second, I would look at the various managed service providers and infra buildout companies in the region. Offhand, Getronics, CSC, AtoS, Toshiba, and Datacraft, aka Dimension Data, come to mind... I know there are more. These companies manage call centers in Malaysia, India, and the Philippines, offer onsite and tier 2 services, and the name of the game is to take over ICT support services for the MNC's. You'll probably need to be in Singapore to take advantage of these opportunities as the hiring will be local, as will the packages. Forget local firms unless you are Chinese and well connected through uni and national service.