Junior Voice Engineer (m/f/d)- job post

Information and Technology
May 19, 2026

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Job Description

Junior Voice Engineer jobs are ideal for IT professionals who want to build a strong career in communication and networking technologies. A Junior Voice Engineer is responsible for managing VoIP systems, supporting voice infrastructure, troubleshooting network issues, and improving communication performance for businesses. This role offers excellent growth opportunities for candidates with technical skills, problem solving abilities, and knowledge of modern voice solutions.

2.72.7 out of 5 stars

United States

BenefitsPulled from the full job description

  • Health insurance

Full job description

Become Junior Voice Engineer (m/f/d) at Retarus.

Retarus is a worldwide provider of cloud-based messaging solutions at enterprise scale. We serve over 40% of the companies listed on the S&P Global 100, e.g. Adidas, Bayer, SAP, BNP Paribas, Goldman Sachs, T-Systems, Swarovski & UPS, as well as governmental agencies and major players in markets across the world. Privately owned and founder-managed for over thirty years, Retarus is customer-oriented, stable, a fair employer, and a strategic business partner with a long-term vision. With some 500 employees in 19 offices on four continents, Retarus operates locally and thinks globally: our teams are organized across borders and are highly integrated. This makes Retarus a multicultural, multilingual, and engaging workplace. We are committed to creating a diverse and dynamic environment for our employees, with generous compensation, time off, and a global, collaborative workplace.

What we offer

  • Mobile working and flexible working time
  • Collaborative, diverse company culture and superior team spirit
  • Flat hierarchies and great feedback culture
  • Development opportunities & career perspective
  • International business & cross-site collaboration
  • Modern, dog-friendly offices with nice amenities
  • Company-paid health insurance, public transportation, lunch vouchers and further benefits

What you’ll do

  • Support business objectives by ensuring the reliable and efficient operation of the global VoIP network environment
  • Independently contribute to the design, architecture, and continuous improvement of the VoIP landscape
  • Implement changes, enhancements, and upgrades within the VoIP infrastructure
  • Ensure high availability of the data center VoIP infrastructure, including backup and disaster recovery concepts across worldwide locations
  • Collaborate on the planning and execution of VoIP network expansions and infrastructure development projects
  • Maintain secure, resilient, and high-performing VoIP network operations through proactive performance and security management
  • Ensure highly available voice connectivity, including SIP trunk management and active coordination with voice carriers
  • Monitor, troubleshoot, and optimize components within the production environment to ensure stable operations
  • Manage and optimize outbound voice routing with a focus on cost efficiency and call quality

What you’ll need

  • Technical education in IT, Computer Science, Electrical Engineering, or a related field, combined with IT specialist training and solid knowledge of VoIP technologies and equipment
  • At least 2 years of professional experience in VoIP environments, including hands-on experience with relevant PBX systems
  • Strong understanding of SIP, SDP, RTP, and voice routing concepts
  • Ideally, experience with technologies such as Ribbon/Sonus SBC and PSX, ACME/Oracle SBC, or Patton Media Gateways
  • Experience with voice carrier management and SIP trunk connectivity is a plus
  • Confident working with Linux command-line environments
  • Experience with Python scripting and task automation
  • Knowledge of fax technologies
  • Experience with Asterisk and/or Kamailio is highly desirable

What you can expect

At Retarus, you will work on impactful and dynamic projects, with real opportunities to make a difference. Our customers are leaders across diverse industries, with constantly evolving needs and high expectations. You’ll be working with cutting-edge technology and great creative leeway to meet customers’ needs – and the projects you work on will be deployed globally. Working at Retarus, you will collaborate closely with convivial, culturally diverse teammates. You will grow professionally in a dynamic and exciting workplace and design impactful solutions in real time with top companies.

Very important

Come as you are. Retarus is committed to equal employment opportunity regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, or veteran status.

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