Portfolio Company Careers

Discover career opportunities across PFG's network of portfolio companies

Senior Support Engineer



Customer Service
Brno, Czechia
Posted on Tuesday, July 2, 2024

Mavenir is building the future of networks and pioneering advanced technology, focusing on the vision of a single, software-based automated network that runs on any cloud. As the industry's only end-to-end, cloud-native network software provider, Mavenir is transforming the way the world connects, accelerating software network transformation for 250+ Communications Service Providers in over 120 countries, which serve more than 50% of the world’s subscribers.

Role Summary

Role Summary
To support Mavenir product and system solutions in a specific technology area with defined customers prospects.

Main Responsibility Area: MS solution Architect for Vo=WiFi & support in product and solutions level. Expertise and demonstrated competence in IMS technology area, supporting others. Understanding client needs, identifying solutions to non- standard queries; actively creating business opportunities. Understanding internal/external business issues.

Key Responsibilities

  • Key Responsibilities

  • Ability to explain 5G/4G/3G/2G Core (Voice Core & Packet Core), VoLTE/VolTE, solutions and architectural changes to global telecom customer teams
  • LLD and HLD designing for VolTE and related IMS network
  • Ensuring smooth VolTE operations and effective customer management
  • Troubleshooting of E2E network issues & coordination with all stakeholders
  • Subject matter expert (SME) for Core Network functions & should have experience on followings technologies/products:
  • Architect for VolTE
  • Voice Core # IMS/ VoLTE (CFX, TAS), SBC, MRF, DRA
  • 3G Core (MSS, MGW)
  • Mobile core technologies, including 3gpp, IMS Virtualization, M2M and LTE is helpful
  • Awareness of telecom evolution topics Cloudification, VMware, OpenStack, Containerization, ZTS
  • Candidate shall have working experience in VolTE including GSM/4G mobile core network/switching of any vendor.
  • -Trace analysis skills of network interface Gb,RANAP,Gr,GTP,S1-MME,S6a,S5-S8,S13,S11,S10,Gx,Gy,Rx,Gm etc.
  • Will be responsible for direct contribution to customer offers/bid technical solutions writing, reviewing own & attached team members deliverables.
  • Must have Shell Scripting & Linux experience
  • Expert in own product/solution area. Responsible for reviewing own and peer's work.
  • Responsible for providing end to end support in MS Operation work.
  • Ready to work in shift and different time zone based on requirements.
  • Knowledge about Cloud, VMware, Front End Containerization, SME Core Network, OpenStack

Job Requirements

Job Requirements

  • Essential:
  • Minimum of 8-15 years' experience in using relevant networking protocols
  • Bachelor / Master's degree or equivalent
  • Previous experience as an IMS SME for VolTE or related experience
  • Fluency in English both verbal and written
  • Other languages are of advantage Desirable Professional background Areas
  • Managed Services
  • Outsourced Operations
  • NOC Operations
  • Production Change Management
  • Maintenance and Support
  • 4G, LTE, IMS, Messaging Rollouts
  • Desirable Personal Attributes
  • Collaborative and Team Player
  • Open to new ideas, adaptable
  • Detail Oriented, must be able to run on the ground with the engineers
  • Conservative in taking risks that lead to mistakes in the field
  • Aggressive in driving to solutions and conclusions to issues
  • Requires Minimum Supervision. Self-Starter – Can Do Attitude
  • Highly adept in managing rollout risks
  • Previous experience working for global organizations.
  • Strong negotiating and expediting skills.
  • Ability to work in fluid, fast-paced, global environment.
  • Ability to be quick, agile, and highly responsive.
  • Strong interpersonal skills, a team player


Mavenir is committed to working with and providing reasonable accommodation to individuals with physical and mental disabilities. If you require any assistance, please state in your application or contact your recruiter.

Mavenir is an Equal Employment Opportunity (EEO) employer and welcomes qualified applicants from around the world, regardless of their ethnicity, gender, religion, nationality, age, disability, or other legally protected status.