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      C5 SOFT SWITCH

      FLEXIBLE AND SCALABLE SIP/XMPP SOFT-SWITCH FOR VOICE, VIDEO, PRESENCE, MESSAGING, AND WEBRTC

      C4 SOFT SWITCH

      HIGHLY SCALABLE CARRIER GRADE CALLS 4 SWITCH, FROM SMALL TO LARGE SIZE DEPLOYMENTS

      CPBX

      POWERFUL, COST EFFICIENT PLATFORM TO PROVIDE HOSTED UC AND PBX FEATURES FOR B2B/SME CUSTOMERS

      LI

      MODULAR AND SCALABLE SOLUTION FOR LAWFUL INTERCEPTION

      RB

      ENTERPRISE-GRADE CLOUD COMMUNICATION PLATFORM FULLY DEVELOPED IN EUROPE

      RTPENGINE

      VERSATILE AND ROBUST RTP PROXY DESIGNED TO ENHANCE AND OPTIMIZE REAL-TIME COMMUNICATION SESSIONS

      MG

      COMPACT SIGNALLING AND MEDIA GATEWAY FOR SIP AND SS7/TDM INTERCONNECTIONS

      SIP PHONE

      STAY ALWAYS CONNECTED WITH VOIP/SIP PHONE APP FOR iOS AND ANDROID DEVICES

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      B2B

      State of the art B2B unified communication solutions including virtual PBX and mobile clients for Telecom Operators and Internet Service Providers

      Residential

      Voice over IP and unified communication solutions for the residential market serviced by Telecom Operators and Internet Service Providers

      UCC

      Enterprise communication solutions including video calls, web conferences, file sharing and data transfer to any destination directly from your web browser

      SIP TRUNKING

      SIP Trunking service offer voice and video communications over IP.

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    • COMPANY

      ABOUT SIPWISE

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      Our partners (coming soon)

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      Coming soon

      CAREERS

      We are hiring

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Sipwise
WE ARE HIRING

Backend Software Engineer (all genders)

Are you passionate about clean code, scalable systems, and backend technologies? We’re looking for an experienced Backend Software Engineer to join our team in Vienna. This hybrid backend developer job offers the flexibility to work remotely while collaborating with a motivated team building high-performance REST API solutions and microservices in the telecommunication industry.

Your tasks

  • Design, implement, and optimize backend web applications and services

  • Work on our REST API backend and related NGCP modules

  • Develop and maintain scalable microservices for existing and new features

  • Write clear and efficient code with a strong focus on software architecture and functionality

  • Collaborate closely with cross-functional teams to ensure smooth integration and project delivery

  • Perform software testing, create documentation, and write validation tests

  • Maintain and improve our MariaDB database model

What we expect from you

  • 3+ years of experience in backend software development

  • Proficiency in designing and building REST APIs and microservices

  • Solid understanding of relational databases, particularly MariaDB

  • Experience with performance optimisation, scalable architectures, and agile development

  • Passion for clean code, automated testing, and continuous improvement

  • Strong communication and collaboration skills, ideally in cross-functional, agile teams

What you can expect from us

  • A hybrid software engineering job in Vienna with remote work flexibility

  • The opportunity to work on different projects in a dynamic, international team

  • A supportive, innovative environment that values technical excellence and learning

  • Competitive salary and benefits package

We offer opportunities to develop your skills and capabilities within a work environment of international experts!

Are you looking for a demanding challenge? Then we are looking forward to your application!
Contact us at jobs@sipwise.com

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with advanced Sipwise communications products.

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