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



very basic implementation of SIP

[login to view URL]


the rest of the above named requirements


with and without TLS / SRTP support

TLS / SRTP, shall be mandatory for later usage of this app


will not be disclosed, place your best bid


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

Færdigheder: Java, SIP, VoIP, API Integration

Om klienten:
( 45 bedømmelser ) Stuttgart, Germany

Projekt ID: #34672371

17 freelancere byder i gennemsnit $353/timen for dette job


Hello We are a group of Software Engineers (Programmers) having 10+ years of experience. Expert in JAVA, C, C++ , C# , .NET, Python, MATLAB. Done 700+ projects here on FREELANCER.COM. Please check our profile for Flere

$10 USD / time
(377 bedømmelser)
(17 bedømmelser)

Hi, I have read your post and understood your requirement. Looking for the freelancer to work on your next project? Or just need some issues/bugs/fixes ASAP? I have 11+ years of software experience in fortune 500 com Flere

$750 USD / time
(8 bedømmelser)

Hello, I've worked on SIP in a major telco company in Turkey. We used Java, Python and various tools evaluate and prevent attack vectors on SIP and other VOIP protocols. I would like to learn more about the project Flere

$55 USD / time
(4 bedømmelser)
(1 bedømmelse)
(1 bedømmelse)

Dear Concern, With immense pleasure introducing Sarker Trade International Limited, a specialized TECH company focusing on system evolution, digital core and intelligent technology. Our global infrastructure technolog Flere

$777.77 USD / time
(1 bedømmelse)

ok I understood your requirement but I have few doubts, text me so I can clear all my doubts right away, I can help you and i am ready for work. Thank you

$50 USD / time
(2 bedømmelser)

Dear Sir, I am a FullStack developer with a passion with 12 years of experience. Knowledges/Experiences/Favorites: ✅ HTML5/SCSS/CSS3/SVG/jQuery/Pure Javascript ✅ Javascript/TypeScript ✅ ReactJS/VueJS/React Native/Nex Flere

$501 USD / time
(2 bedømmelser)

Hello, I will do my best for your project! Please send me your message and let's discuss more detail. Thanks.

$30 USD / time
(1 bedømmelse)

Hello there, I hope you are doing well!!! I’m Dipak, representing a reputed IT agency named WeeTech Solution Private Limited based in India. I will be glad to work on your project to build a long business relationship Flere

$501 USD / time
(0 bedømmelser)

Hi, Dear Client. How are you? I am happy to have the opportunity to introduce myself through your job posting. I read your job description very carefully and I could be sure that I am a right person to your requirement Flere

$501 USD / time
(0 bedømmelser)

Hello As a senior full stack developer, I have weath experience of working with java I am very familiar with API integration for the past 10 years I am pretty sure I can complete your project perfectly I can start work Flere

$700 USD / time
(0 bedømmelser)

Hi, I am Java 8, SQL expert developer. I have good skill and full exerience in Java, JavaFX, SQLite, MySQL, CSS, JSP, Java Servlets, J2EE, Java Spring, JavaScript and so on. I have already developed many Java Desktop A Flere

$501 USD / time
(0 bedømmelser)

Hi Sir/Ma'a,m, I will like introduce my group to you, We have highly proficient dedicated and enthusiastic team of Java professionals, that have been doing projects in Payment Industry, Smartphone Application Developm Flere

$501 USD / time
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Dear Hiring Manager. Hope you are doing well. I've read your job description with interest. As a senior software engineer, I have over 9 years of experience with various kinds of skill. My major skills are - Backend Flere

$30 USD / time
(0 bedømmelser)

Hi, I have tremendous expertise in Java, J2EE, Spring and Hibernate, SIP, VOIP etc and I will complete your project with your timeframe and also I am ready to give a test job to prove my skills so please schedule a qu Flere

$50 USD / time
(0 bedømmelser)