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Senior Software Engineer, PSTN Signaling and Media

by:  Skype Technologies OÜ

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The job offer is available for the following event:

The PSTN team is all about connecting millions of users to the world of landline and mobile telephones in the most efficient way. We operate at global scale and this requires highly extensible and resilient signaling and media infrastructure. This is where we come in - and you!

What will you do:  

  • Full software development lifecycle

  • Understanding business and technical requirements, creating technical architecture, programming, documenting, creating unit-tests, testing, releasing, troubleshooting and fixing bugs

  • Work together with colleagues on code reviews, internal infrastructure improvements, and process improvements

  • Work closely with sibling teams to further improve quality and reliability of the services we provide

  • Explore and prototype new technical solutions, improve internal processes

  • Use cloud platforms on a big scale with geo distribution

  • Grow engineering culture and best practices; share knowledge and mentor other engineers

A good candidate has:

  • Ability to ramp up quickly on new technologies and adopt solution from within the company or from the Open Source community

  • A positive, “can do” attitude and a desire to have an impact on changing the way people communicate

  • Good knowledge of OOP: development and design patterns

  • Knowledge of Internet/web technologies and protocols, REST and good practices of API design

  • 3+ years of experience in developing complex, distributed systems in C++, C# or equivalent languages

  • Experience in multithreaded programming, asynchronous and event driven application design

  • Ability to work closely with team members to collaborate on innovative solutions; ability to work with minimal direction and is self-driven, pro-active and results-oriented

  • Solid written and oral communication skills (English is a must, other languages a plus)

An ideal candidate also has:

  • Experience with Azure or other cloud platforms

  • Experience with SIP/VOIP; experience with RTP and media codecs

  • Experience with scripting languages (Python, Bash, PowerShell)

  • Experience with SQL

  • Working knowledge of Agile / Scrum development practices


A word from the team: “We are lucky to have one of the most desirable teams to work in - we enjoy a really good working climate and fun, friendly atmosphere combined with a lot of responsibility”.


Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, color, family or medical care leave, gender identity or expression, genetic information, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran status, race, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable laws, regulations, and ordinances.

If you need assistance and/or a reasonable accommodation due to a disability during the application or the recruiting process, please send a request to


This job has expired

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