Having spent my entire professional career specializing in Linux, MySQL and PHP as well as having a deep familiarity with FusionPBX, I am confident that I'm the right candidate to carry out your project. Beyond the necessary technical skills, I have sound experience in integrating custom APIs and personalizing GUIs for rebranding purposes.
With regards to your tight timeframe, I am no stranger to pressing deadlines. In fact, I thrive under such conditions by maintaining a meticulous work ethic coupled with an eye for detail. Moreover, my proficiency in languages and platforms such as PHP, LUA, PostgreSQL, and FreeSWITCH further reinforce my suitability for this project.
Most importantly, I believe in tangible results and effective communication. As evidenced by your payment structure, you value delivery over promise; likewise, it's my motto too. Let's get started on delivering your FusionPBX integration and rebranding needs!