SIP (VoIP) integration senior expert for Java desktop

we are looking for a very experienced Java senior developer, tech lead or architect. Second mandatory senior expertise and experience is about integrating SIP (VoIP) into a Java Applications. What will be required? We will define a call, we go hands on through best ways of integrating SIP / VoIP into a Java application, which may run on a backend but also on a frontend (desktop/laptop) You will discuss with our Java product owner about integration options of SIP into Java. You are a good fit, if you have: - used SIP already in multiple real life java projects - used SIP phone handling in real life java projects you are a bad fit, if you have never done tasks of integration SIP into Java A simple test task for seniors in SIP+Java: - listen to incoming calls (SIP provider can be provided to you) - trace incoming calls to sysout with the phone number Milestones: MS1: very basic implementation of SIP [login to view URL] MS2: the rest of the above named requirements MS3: with and without TLS / SRTP support TLS / SRTP, shall be mandatory for later usage of this app budget? will not be disclosed, place your best bid timeframe? starting in the next 2 weeks time commitment? about 1-4h a week for the initial consultancy. If you want to get incorporated into development, you will be awarded tasks, which you estimate, and we award you afterwards the implementation