Technology Operation Engineer
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Key skills for this role
About the Role
Responsible for operating and maintaining Intelligent Network and Value-Added Services platforms, ensuring charging accuracy and regulatory compliance with strong analytical ski.
Key Skills for This Role
Full Job Posting
Technology Operation Engineer
is responsible for the design, deployment, operation, and maintenance of Intelligent Network (IN) and Value-Added Services (VAS) platforms, including OCS, PCRF, STP, SBC, SMSC, SIM/eSIM management, and Voucher Management Systems (VMS).
The role ensures high availability, charging accuracy, and seamless integration with the
Host Mno
,
A2P SMS partners
, and
IT applications (BCRM, Billing, Mediation, Self-Care)
, while ensuring full regulatory compliance and timely customer complaint resolution.
Key Responsibilities
- Operate, monitor, and maintain IN/VAS, OCS, PCRF, STP, SBC, SMSC, IVR, SIM/eSIM, and VMS platforms.
- Perform health checks, preventive maintenance, backups, and incident resolution within SLA.
- Manage alarms, traces, and logs to proactively detect service-impacting issues.
- Plan and execute
- system upgrades, patches, and security fixes
- in close coordination with
- vendor system support teams
- , ensuring proper testing, rollback plans, and minimal service impact during maintenance windows.
OCS Rating, Tariffs, Offers & Promotions
- Operate and configure the
Online Charging System
- for real-time prepaid/converged charging.
- Define
- rating logic, tariff plans, rate tables, and zone/time-based charges
- for voice, SMS, data, and roaming.
- Design and manage
- offers, bundles, add-ons, promotions, loyalty rewards, and recharge bonuses
- .
- Configure service classes, accumulators, counters, and Diameter Gy/Gx/Rx interfaces.
- Ensure
- charging accuracy and zero revenue leakage
- ; support CDR/EDR analysis and dispute resolution.
Pcrf And Policy Control
- Configure and maintain
Pcrf And Pcf
- policies for QoS, FUP, throttling, and service-based control.
- Manage
Gx, Gy, Rx, Sy, Sd
- interfaces with PGW, OCS, and IMS.
- Implement use cases such as zero-rated services, sponsored data, and dynamic QoS.
Smsc & A2p Partner Management
- Operate and maintain the
Smsc
- for P2P, A2P, and MO/MT messaging.
- Onboard and manage
- A2P partners and aggregators
- via SMPP (binds, throttling, routing, whitelisting).
- Implement
- SMS firewall
- policies to block grey routes, spam, and smishing.
- Ensure A2P revenue protection, partner SLA compliance, and SMS KPI monitoring.
Signaling (Stp) & Sbc
- Operate the
Stp
- system for SS7/SIGTRAN routing; manage point codes, linksets, and GTT.
- Operate
Sbc
- platforms for SIP/VoLTE/IMS security, codec handling, fraud prevention, and call quality.
- Coordinate signaling and SIP interconnection with the host MNO and external partners.
Sim And Esim & Voucher Management
- Manage
- SIM/eSIM/OTA platforms
- for profile creation, provisioning, and lifecycle operations.
- Operate the
Voucher Management System
for voucher generation, distribution, redemption, and reconciliation, including e-Top-Up integration.
It Applications Integration
- Integrate IN/VAS/OCS/PCRF/SMSC/SIM/VMS platforms with
BCRM, Billing, Mediation, ERP, Self-Care
- .
- Maintain real time triggers and file export to external systems like Notifiation application and and mediation systems ensuring data consistency and transaction integrity.
Host Mno Coordination
- Act as the
- technical focal point with the Host MNO
- for all IN/VAS, signaling, charging, SMS, and IMS matters.
- Coordinate integration, testing, change management, and joint troubleshooting.
- Manage technical SLAs, interface agreements, and operational reviews with the host operator.
Education & Experience
- Bachelor's Degree in Telecommunications, Electronics, or Computer Engineering.
- 3 5+ years of hands-on experience with IN/VAS, OCS, PCRF, STP, SBC, SMSC, IVR, SIM/eSIM, and VMS platforms.
- Experience with
- OCS rating/offer/promotion design
- ,
- PCRF policy configuration
- , and
- A2P/SMPP partner integration
- .
- Prior experience coordinating with a Host MNO and integrating with IT systems (BCRM, Billing) is highly desirable.
Technical Skills
- Strong expertise in
- IN architecture, OCS/OFCS, PCRF/PCF, SMSC, STP, SBC, SIM/eSIM, IVR and VMS
- .
- Solid knowledge of
- SS7, SIGTRAN, Diameter (Gx/Gy/Rx/Sy/Sd), SIP, SMPP, MAP, CAP, INAP, RTP
- .
- Hands-on experience with major vendors (Huawei, Ericsson, Nokia, ZTE, Oracle, Ribbon, AudioCodes).
- Proficient in
Linux And Unix
- , shell scripting, and databases (Oracle, MySQL).
- Strong understanding of
- API integration
- (REST, SOAP, Kafka, ESB) with IT systems.
- Familiarity with NFV, cloud-native VAS, and monitoring tools (Zabbix, Grafana, ELK) is a plus.
Soft Skills
- Strong analytical, problem-solving, and stakeholder management skills.
- Customer-focused with attention to detail; able to work under pressure and on-call rotations.
Preferred Qualifications
- Vendor certifications (Huawei, Ericsson, Nokia, Oracle Communications).
- Experience with
5g Ccs And Pcf
, GSMA eSIM/RSP, SMS firewall, and automation (Python, DevOps).
Working Conditions
Office-based with data center visits, 24/7 on-call rotation, and flexibility for maintenance windows.
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