Senior / Principal Software Engineer
(SIP Stack/Proxy Development)

Pingtel is looking for a senior/principal software engineer to join
an energetic and talented team to participate in exciting open-source
SIP communications servers (sipXproxy, sipXpublisher, sipXregistrar,
etc.) and presence server development projects. These servers
form the core of a SIP message routing and service infrastructure, and
are combined in a variety of ways to produce a number of different products.

Qualifications:

• BSCS/CE/EE minimum
• At least 7 years of commercial
  software development experience
• SIP, Datacom / Telecom development
  experience
• Solid Linux C/C++ development
  experience
• Experience in building and
  maintaining complex multi-threaded software
• Excellent software engineering
  skills, including object oriented analysis and design
• Able to investigate and recommend
  technical solutions to complex problems with little direction
• Excellent written and verbal
  communication skills
• Self-motivated, excellent
  teamwork skills, and takes responsibility and ownership of development
  areas

In addition, experience with any of the
following is highly desirable:

• Experience with SIP stack
  and proxy implementation
• Experience with implementation
  and deployment of IM and Presence protocols
• Experience with XML tools
  and technologies, especially XML Schema and validating parsers
• Familiarity with autotools
  and open source methodologies and conventions

Senior / Principal Software Engineer
(SIP-Based Application Development)

Pingtel is looking for a senior/principal software engineer to join
an energetic and talented team to participate in exciting open-source
SIP-based application development projects. The current SIP-based
applications include a SIP-based media server for voice mail, auto-attendant,
and IVR; a SIP-based ACD server; and a SIP-based Conference Server.
More exciting projects are being planned. This individual will
participate in the design and development of all existing and future
applications.

Qualifications:

• BSCS/CE/EE minimum with at
  least 7 years of software development experience.
• Solid Linux C/C++ development
  experience.
• Excellent software engineering
  skills, including object oriented analysis and design.
• Self-motivated, excellent
  teamwork skills, and takes responsibility and ownership of development
  areas.
• Experience in building and
  maintaining complex multi-threaded software.
• Knowledge of network socket
  level programming and operating system primitives.
• Able to investigate and recommend
  technical solutions to complex problems with little direction.
• Excellent written and verbal
  communication skills.

In addition, experience with any of the
following is desirable:

• Telecom experience, preferably
  in one or more Voice-over-IP technologies (SIP, H.323, RTP, MGCP, or
  Megaco).
• TTS, or voice recognition.
• Software-based audio processing
• ACD, Call center applications
• Conference bridge