MTN Group

Engineer - Core Network Operations.Technology

Posted 6 Days Ago

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Douala, Wouri, Littoral, CMR

In-Office

Senior level

Big Data • Other • Financial Services

The Role

Operates and maintains mobile core circuit- and packet-switched networks, integrating nodes and services, managing upgrades, testing, troubleshooting, performance reporting, disaster recovery, backups, vulnerabilities, and vendor SLAs. Supports 2G–5G, signaling, IMS, roaming, virtualization, and interconnect services. Coordinates UAT/PAT, audits, preventive maintenance, emergency recovery, and technical support across internal teams, managed-service partners, and third-party vendors.

Summary Generated by Built In

We at MTN Cameroon are a purpose and value-led organization.

At MTN Cameroon we believe that understanding our people’s needs and aspirations is key to creating experiences that delight you at work, every day. We are committed to fostering an environment where every member of our Y’ello Family is heard, understood, and empowered to live an inspired life. Our values keep us grounded and moving in the right direction. Most importantly, they keep us honest. It is not something we claim to be. It is in our DNA.

As an organisation, we consider it our mission to create an exciting and rewarding place to work, where our people can be themselves, thrive in positivity and ignite their full potential. A workplace that boosts creativity and innovation, improves productivity, and ultimately drives meaningful results. A workplace that is built on relationships and achieving a purpose that is bigger than us. This is what we want you to experience with us!

Our commitments go beyond an organisational promise. It is in our leadership and managerial ethos to meaningfully partner with our employees, customers, and stakeholders with a vision to realise our shared goals.

Our values dubbed, LIVE Y’ello, are the cornerstone of our culture.

Lead with Care

Can-do with Integrity

Collaborate with Agility

Serve with Respect

Act with Inclusion

Responsibilities

Accountable for developing and implementing processes and procedures to integrate new nodes, links and services in the Core network of MTN Cameroon.
Responsible for the implementation of all core systems, change requests, testing and reviewing performance before and after every change completion.
Responsible for the review of all Core systems’ statistical performance daily with reports shared accordingly.
Responsible for supporting local teams & providing guidance on troubleshooting of general & specific network faults
Management and coordination of the activities and performance for all 3rd party vendors delivering specific core services for MTN Cameroon such as GTP, SS7 and SMS firewall.
Responsible for building the necessary communication requirements among different departments: IN, Billing, Planning & IS teams, etc...
Responsible for handling all UAT/PAT testing with project implementors and/or other departments during project acceptance.
Ensure all UAT/PAT issues are resolved and documented.
Responsible for the resolution of all vulnerabilities on the Core systems.
Provide other departments with technical core systems information upon request
Responsible for the scheduling of Disaster Recovery Plan activities and documentation thereof in line with MTN Cameroon’s business continuity plan.
Responsible for the coordination of vendor service requests per the agreed SLAs
Audit of core systems configurations to ensure homogeneity in pooled systems.
Promote the use of intelligent tools for Core network service analytics to enhance operational excellence.
Participate in core network (Circuit Switch, Packet Switch) area trouble shooting, remote / on-site support and emergency recovery activities.
Provide guidance to both planning and project teams in the adoption and implementation of core network solutions.
Ability to schedule regular reporting sessions with Managed service partners and 3rd parties and report to upper management on core systems performance.
Ensure all Core systems backups are up to date in compliance with BCP guidelines.
Support internal and external audit engagements pertaining to core network systems.
Involve in the System / Function Verification, trial project and support activities.
Provide technical support in the core network (Circuit Switch, Packet Switch) area towards Marketing Unit, Customer service, and other departments.
Perform new product lab test, customer environment qualification and integration
maintenance of effective PS and CS network elements and implementation of network requirements and specifications to support business strategic, services and products
Perform a full system test daily as required by circumstances.
Supervision and troubleshooting of core network problems as they arise and ensure it stays fully operational.
Developing and maintaining the knowledge base for networking technologies.
Procedures and providing consulting support to project team as the need arises.
Carry out installations, preventive maintenance and troubleshooting on nodes (MSC,
MSS, MSC-S Blades, STP, DRA/DEA, SGSN-MME, GGSN/EPG, PCRF, PCEF, MGW, SBG HLR-FE, HSS-FE, EIR-FE, CUDB, IMS, vSBG, DNS.
Manage stakeholder relationships with other Telcos and partners in the set up and operation of shared mobile services
Manage performance of MS (Managed Service) partners and 3rd party vendors in delivering world class core systems’ performance
Performing software upgrade in Core nodes (PNF&VNF&CNF)
Managing and coordinating roaming configurations and routine tests
Prepare reports daily, weekly, and monthly reports for engineers, Management and Group

Qualifications

Education:

B.Sc. in Electrical/ Electronic or Telecommunications Engineering

Work Experience:

At least 5 years’ work experience in Core CS&PS Network
Experience in troubleshooting TCP/IP with protocol analyzers, Wireshark
Proven experience in Core CS&PS Network operations
Experience in the ZTE, Huawei and Ericsson Core equipment portfolio will be desirable.

Training/Certification

ZTE ZXUN EPC/PCRF/NCEE/DRA Product Operation and Maintenance
NFV(TCES)） Intermediate Training
ZTE ZXUN CS&USPP/VoLTE/RCP/ Product Basic Operation and Maintenance
GSM/WCDMA MSC/MSC-S R13.2 Configuration (ERICSSON)
Ericsson Centralized User Database (CUDB) 13B Operation and Service
Configuration
GSM System Survey and GPRS System Survey
ISO 9001: 2015 Quality Management System-Requirements
ITIL V3 frameworks
Fluency in English and French
Telecommunications industry experience
Global mindset to service worldwide operations
Any other relevant

Knowledge:

Understanding of 3GPP, ITU-T and ANSI standards.
Circuit and Packet switched communications protocols such as SS7 (including SCCP, TCAP, MAP and CAMEL phases 1 to 4), SCTP (SIGTRAN), Diameter, including ability to design and configure voice, data and messaging flows.
Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi).
Online Charging System (OCS) and CAMEL in billing and call control
Core Network virtualization and cloudification

Skills:

Basic understanding of telecom network key technology is preferred
Familiar to 3GPP, ITU-T Standard and Core network and flow is preferred.
Voice SIP / RTP, ISUP and voice convergence technologies, including IMS (including VoLTE and VoWiFi)
Hands on with sniffers, Wireshark and testing tools advanced mode
Experience with mobile networks(2G/3G/4G/5G), international signaling, and international interconnects a strong plus
Extensive experience with complex signaling interop within the next generation intelligent networks
Problem Solver
Quality and efficiency minded, analytical thinking
Quick learner, willing to take challenge, thriving in fast paced, high-pressure environment
Strong writing and documentation skills are needed to develop reports
Flexible, showing initiative, perseverance and have good communication & co-operation skills, strong teamwork
Pro-active, customer-oriented with good customer communications
Adaptability and responding to change
Results Achiever
Operationally Astute
Be able to work under pressure
Creativity, flexibility and adaptability
Relationship skills
Team working, inter-personal skills
Self-motivated and Decisive

Behavioral Qualities

Decisive Problem Solver
Detail-oriented
Highly organized

About Us

We are a purpose and value-led organization.

At MTN, we believe that understanding our people’s needs and aspirations is key to creating experiences that delight you at work, every day. We are committed to fostering an environment where every member of our Y’ello Family is heard, understood, and empowered to live an inspired life.

Our values keep us grounded and moving in the right direction. Most importantly, they keep us honest. It is not something we claim to be. It is in our DNA.

Our commitments go beyond an organisational promise. It is in our leadership and managerial ethos to meaningfully partner with our employees, customers and stakeholders with a vision to realise our shared goals.

As part of MTN’s recruitment process, your personal information may be processed using secure Artificial Intelligence (AI) technology to assist with the shortlisting of candidates. This is done in compliance with the Protection of Personal Information Act (POPIA). By applying for this position, you consent to the processing of your personal information for recruitment purposes. All data will be handled securely and used solely for evaluating suitability for the role.

We are delighted that you are considering us as your career partner to make a mark in the world. We look forward to your application!

Thank you.

About the Team

The Human Resources team partners with all aspects of the organization, driving success through the effective and innovative management of people for both current and future business needs.

Key roles that the Human Resources team performs:

Executive Role: Specialists in all aspects of people management. High-level input at a strategic level into all key business decisions.
Audit Role: Ensures all areas of the organization are compliant with legal requirements AND best practice employment policies and procedures.
Facilitator Role: Close partnership to support, advise and extend the ability of all areas of the organization to meet their objectives through the implementation of highly effective employment practices in areas such as Talent Acquisition, Learning and Development, Reward systems, Performance Management, Health and Wellbeing.
Consultancy Role: Provide expert advice to the organization and it’s managers on any aspect of workforce management and employee relations and performance.
Service Role: Ensure the organization is fully aware of and is equipped to deal with developments impacting employment matters, such as changes in legislation, changes in the characteristics of the labor market.

Skills Required

B.Sc. in Electrical, Electronic, or Telecommunications Engineering
At least 5 years of experience in core circuit-switched and packet-switched networks
Proven experience in core CS and PS network operations
Experience troubleshooting TCP/IP using protocol analyzers and Wireshark
Experience with ZTE, Huawei, and Ericsson core equipment portfolios
Knowledge of 3GPP, ITU-T, and ANSI standards
Knowledge of SS7, SIGTRAN, Diameter, SIP, RTP, ISUP, IMS, VoLTE, and VoWiFi
Knowledge of online charging systems and CAMEL
Knowledge of core network virtualization and cloudification
Experience with mobile networks, international signaling, and interconnects
Fluency in English and French
ZTE, NFV, Ericsson, GSM, GPRS, ISO 9001, or ITIL training and certifications

MTN Group Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about MTN Group and has not been reviewed or approved by MTN Group.

Parental & Family Support — Parental leave is positioned as notably generous in some markets, including widely cited six-month paid maternity leave and short paternity leave. Family-friendly support is also described through options like workplace childcare, adoption/surrogacy support, and related leave provisions in certain operating companies.
Strong & Reliable Incentives — Variable pay elements are described as a meaningful part of the package, including annual performance bonuses, sales commissions, and structured short-term incentives tied to performance outcomes. Longer-term incentive participation is also described for eligible grades through share-based or share-linked plans.
Wellbeing & Lifestyle Benefits — Wellbeing support is presented as visible and multi-dimensional, including mental, physical, and financial wellness programs and access to emergency assistance services for medical, security, and travel events. Lifestyle and telecom-specific perks are also described, such as connectivity allowances and flexible lifestyle benefit funds used for items like gym, travel, or school-related expenses in some locations.