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Vodafone Logo Vodafone · IT - Software Development

Specialist VAS Design and Engineering

Spain, Madrid · Job Posted February 13, 2026
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Job Description

Perks and benefits; Would you like to be part of our new adventure? Vodafone Group launched its new technological HUB in 2021, an international center of excellence dedicated to research and development of technical solutions, such as Secure Networks, 5G and 6G development, Open RAN, IoT, MPN & MEC and UCC for Vodafone Business, platforms and enterprise solutions. This vacancy is part of VOIS Spain, legal entity part of Vodafone Group. Come and join us to create the future together! For the role of Specialist VAS Design and Engineering we are looking for candidates with a broad range of skills.

Job Responsibility

  • Provide expertise in telecommunications, roaming and VAS services to internal teams
  • Design, architect and review telecommunications and software solutions and services
  • Validate requirements and implementations
  • Manage network capacity
  • Support the onboarding, evolution and decommission of roaming services
  • Technical lead of infrastructure and software projects
  • Support project management activities (project and risk planning, vendor management)
  • Coordinate complex technical deployments across multiple teams and technologies
  • Prepare and troubleshoot IP matrices
  • integrate OSS (FCAPS: monitoring, backup, BI data systems, etc.)
  • Define test strategies and required setups for projects
  • Prepare and review project test books and technical test cases
  • Coordinate UAT project phases and conduct performance testing of new solutions and systems.

Requirements

  • In-depth knowledge of international roaming and roaming value-added services (Steering of Roaming, Welcome SMS, Virtual Home Environment, OTA)
  • Broad expertise in telecommunications and network signalling technologies (2G/3G/4G/5G), and protocols: SIGTRAN (IP, SCTP, MTP, M2PA, M3UA, SCCP), SS7 (ISUP, MAP, TCAP, INAP, CAMEL), DIAMETER (s6a y Sh) and 5G (HTTP2, JSON)
  • Good understanding of IT systems (architecture, design, databases, APIs) and software development methodologies (waterfall, agile), including software release management processes
  • Understanding of cloud and virtualization platforms (Openshift, VMware, AWS, GCP or Azure) and solid NFV cloud-native principles
  • Proven track record deploying hardware and software solutions in Vodafone infrastructures
  • Familiarity with network testing tools in general and Emblasoft Evolver in particular
  • Solid TCP/IP understanding, troubleshooting skills and packet analysis with Wireshark. Experience in web services, SOAP, SFTP, TLS, SSL certificates, SNMP, LDAP, etc.

Nice to have

  • Knowledge of STP and DRS network elements is a plus
  • Knowledge of VoLTE and IOT/M2M desirable.

What we offer

  • Hybrid work model
  • Bonus on top of the gross salary
  • Meal voucher (Ticket Restaurant), additional to gross salary
  • Flexible working hours from Monday to Thursday, and an intensive schedule on Fridays
  • Intensive Summer Schedule during July and August
  • Up to 20 days per year of 100% remote work from other locations
  • Private Health and Life Insurance for employees
  • 25 vacation days, plus December 24th and 31st off
  • Optional Pension Plan
  • Access to an online learning platform for continuous training.
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