FreeSWITCH Developer - C/C++ & SIP

Willware Technologies · Custom Software Development · IT Staffing & Staff Augmentation · C++ · 2 days ago
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Salary
≈ $17k – $39k per year (Estimated)
Location
In office (Bhubaneswar, Bengaluru, Hyderabad, Pune, Noida, Gurgaon, Delhi)
Experience
5+ years exp

First seen by Alion on Oct 26, 2026.

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Willware Technologies

Willware Technologies is a software development and IT staffing firm. Its job ads seek Java, .NET and fullstack developers, data QA engineers and solution architects, mostly in Bengaluru, with offices across India and in San Francisco. The company is headquartered in Bengaluru, India.
willwaretech.com · HQ: Bengaluru, India · IT Staffing & Staff Augmentation · Custom Software Development

Role: FreeSWITCH Developer (C/C++ & SIP Engineer)

Company Name: WillWare Technologies

Work Model: Onsite / Fulltime

Experience: 5 - 8 Years

Desired Competencies (Technical Competency):

- Must-Have: C, C++, SIP

- Good-to-Have: Asterisk or other similar tool experience

Education: B.Tech in Computer Science / Electronics / Telecommunications, or equivalent

Role Expectations:

- FreeSWITCH hands-on (dialplan, modules, ESL/API integrations)

- Free switch with C or C++ dev programming

- WebRTC stack (ICE, STUN/TURN, DTLS-SRTP, SDP, mod_verto, WSS)

- SIP proficiency (RFC 3261, trunk config, NAT, codec tuning, RTP optimization, SRTP/TLS)

- Integrate FreeSWITCH with Contact Center platforms (custom CCaaS stacks)

- Configure ACD (Automatic Call Distribution), skill-based routing, and queue management via mod_callcenter or fifo queues

- Enable call recording, monitoring, whisper/barge, and supervisor features

Roles and responsibilities:

- Health monitoring, incident response, log tracing, change mgmt

- Gateway deploy, WSS, TURN, ICE/DTLS troubleshooting, codec mgmt

- Runbooks, SOPs, cross-team collab, Log analysis

Skills

System Architecture, C, C++, SIP, FreeSWITCH, WebRTC, Asterisk, VoIP

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