Staff Software Engineer (SIP, PSTN and VoIP experience)

EU (Remote)
Position already filled
Apply Now

Staff Software Engineer (SIP, PSTN and VoIP experience)

EU (Remote)
Position already filled
Apply Now

About Glia

Our award-winning technology powers conversations with customers for some of the world’s largest enterprises. We believe that combining the human touch with technology is the best way to create amazing customer experiences. When human abilities such as problem-solving, creative thinking and relationship building are enhanced with technology... magical moments happen.

The work

If you're an experienced engineer with practical SIP, PSTN and VoIP experience - this is the opportunity you've been looking for. You'll be working on business-critical projects related to media transfer scenarios in a rapid-growth environment. 

You'll work across groups on challenging initiatives and coach talented engineers along the way. You'll be able to impact Glia on multiple levels, with support from your team and colleagues across the organization. We can't wait for you to join us on this journey!

The team

You will join Team Media, a cross-functional product engineering team consisting of Engineers and an Engineering Manager.

The team’s work is driven by long term business objectives, formulated as quarterly Objectives and Key Results, defined in collaboration with a dedicated Product Manager and Director of Engineering. All projects within the team’s space are planned, led, and executed by Engineers. 

While most of the team members are located in Estonia and Portugal we do accept candidates from anywhere in Europe. All of our processes are optimized for remote collaboration.

The team works mainly with the following tech stack:

  • Backend: Elixir, Ruby microservices
  • Frontend: React.js, RxJS
  • Persistence: PostgreSQL, Amazon S3
  • Infrastructure: Kubernetes, Helm
  • Monitoring: DataDog, Sentry
  • CI/CD: Jenkins


  • Practical experience with SIP, VoIP, PSTN and a good understanding of SIP protocol as we’d love to learn a thing or two
  • Experience with VoIP open-source software like Kamailio, Freeswitch and Asterisk is a bonus
  • Prior experience as a project- or tech lead, ideally working on projects affecting multiple teams across an organization
  • The ability to design high-level solutions and understanding technological tradeoffs
  • Extensive experience building reliable and high-performing systems


  • Glia stock options and competitive salary
  • Diversity: 18 languages and 15 countries represented.
  • Professional development support  (trainings, courses, conferences, books, etc)
  • Access to all the latest tools and equipment you’ll need 
  • Sports compensation, reimbursement for therapy, counseling sessions
  • Team events: annual employee awards, internal hackathons, and a dozen cool events from cooking to the Glia olympic games :)
  • Generous referral bonuses 

*Glia is an equal opportunity employer. Glia does not discriminate against any employee or applicant because of race, creed, color, religion, gender, sexual orientation, gender identity/expression, national origin, disability, age, genetic information, veteran status, marital status, pregnancy or related condition (including breastfeeding), or any other basis protected by law.

The Glia Talent Acquisition team is using only mailboxes for coordinating interviews, providing updates and sending documents. Our hiring process involves an introduction, practical and team interviews, followed by a decision and offer. For more information, visit our Recruitment Privacy Notice page or contact our talent team via

*Want to know more about working at Glia?  Check our Glia's Career FAQs

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Company Culture at Glia

The Employee Experience Below at Glia, Compared to a Typical U.S. Based Company
94% of employees at Glia say it is a great place to work compared to 54% of employees at a typical U.S.-based company.







What is Glia’s Mission?

To help businesses reinvent how they support customers in a digital world.

Customers should be able to engage with a brand from where they’re most comfortable and move seamlessly to other modes of communication as needed. Brands should be able to see the customer’s screen to instantly understand the customers’ point of view, and be their co-pilot to a satisfying experience.

Glia’s Digital Customer Service solution brings the in-person experience to all customer interactions - whether they start online or on the phone.

Learn All About Glia

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Join the Team. We've Been Waiting for You.

We're Pre-IPO, well funded, and growing rapidly. We'd love to meet!

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