One of the reasons that an employer may wish not to publish a job vacancy is to avoid the overwhelming barrage of applications and C.V's which inevitably come their way and will itself require a copious amount of administrative work. In order to circumvent this difficulty, often employers will search within their existing network to locate someone with the appropriate skill set required. Sometimes an employer may search stealthily in order to prevent competing companies from knowing about their employment habits or perhaps they are intending to replace an employee who is not aware that his job is at risk! There are numerous reasons which can explain these stealthy tactics, however in order to put yourself in the best position to find and fill the hidden opportunities, you have to interact with as many people as possible and engage wholeheartedly in formal networking.<br/><br/>The key thing you can do when looking for a hidden job is to make sure you are in communication with as many people as possible. In order to reap the benefits of serendipity you need to be open and informative to whoever you meet, as each person represents a potential opportunity for employment. If you meet someone in an informal context, you can easily move onto a discussion about employment. Subsequently, you can engage with that person to see you as a viable employable candidate or at least open yourself up to his own professional network.<br/><br/>In order to maximise your employability you ought to research target companies through various online searches, specific professional business publications and through work related social media such as LinkedIn. You should endeavour to make contact with anybody who is willing to spare their time to speak to you. If you manage to procure a meeting you can demonstrate your networking nous and turn an informal encounter into a type of informational interview. The more you persevere with these tactics it is increasingly likely that you will firstly learn a lot about specific businesses, as well as hopefully meet someone who is looking for an employee just like you, even if they don't know it yet. The more you put yourself out there, the more you will expose yourself to the hidden job market and place yourself firmly at the forefront as the most suitable candidate for the job.