Mobile Fraud Analyst

The Opportunity

We are looking for an experienced Mobile Fraud Analyst to join our team and take an active role in detecting, investigating, and preventing fraud across our mobile and roaming services.

This position is specifically focused on fraud within the mobile telecommunications industry, including cellular traffic, roaming, Voice, SMS, Data, SIM/eSIM, and international traffic.

Previous hands-on experience with fraud in the mobile/telecommunications industry is mandatory.

What You'll Do

• Monitor and analyze mobile traffic to identify suspicious activity, abnormal usage patterns, and potential fraud.

• Investigate fraud cases across Voice, SMS, Data, Roaming, SIM/eSIM, and international traffic.

• Identify telecom-specific fraud patterns, including unusual calling behavior, high-volume traffic, suspicious destinations, SIM misuse, traffic pumping, and other fraudulent activities.

• Analyze CDRs and telecom usage records to identify anomalies and suspicious behavior.

• Investigate fraud incidents and identify the root cause, affected subscribers, SIMs, devices, networks, and destinations.

• Assess the financial impact and exposure of fraud incidents.

• Define, maintain, and continuously improve fraud detection rules, thresholds, alerts, and monitoring mechanisms.

• Recommend and coordinate preventive actions, including blocking or restricting suspicious subscribers, SIMs, destinations, networks, or traffic patterns.

• Work closely with Network, Roaming, Operations, Product, Finance, and other relevant teams during fraud investigations.

• Track fraud trends and proactively identify new risks, vulnerabilities, and fraud patterns.

• Prepare reports and management-level summaries regarding fraud incidents, trends, financial exposure, and preventive actions.

Requirements

• 3+ years of experience in Mobile/Telecom Fraud Analysis, Fraud Prevention, or a similar telecom fraud role.

• Previous fraud-related experience within a Mobile Network Operator (MNO), MVNO, roaming provider, or telecommunications company – mandatory.

• Strong understanding of mobile telecommunications, cellular traffic, and roaming environments.

• Experience investigating Voice and SMS fraud.

• Knowledge of CAMEL, VoLTE, Diameter, OCS, and telecom charging systems.

• Experience working with CDRs and telecom usage data.

• Strong SQL and data analysis skills.

• Ability to analyze large volumes of traffic and identify abnormal patterns and anomalies.

• Strong analytical, investigative, and problem-solving skills.

• Ability to independently manage fraud investigations from detection through root-cause analysis and mitigation.

• High attention to detail, ownership, and ability to respond quickly to critical fraud incidents.

• Experience working with AI tools (ChatGPT, OpenAI API, Claude, Gemini, etc.).

• Strong English communication skills.

Nice to Have

• Experience with international roaming fraud and wholesale telecom environments.

• Experience working with TAP files and roaming records.

• Familiarity with IMSI, ICCID, MSISDN, IMEI, MCC/MNC, VPLMN, and HPLMN.

• Experience working with Telecom Fraud Management Systems (FMS).

• Experience with Python, Power BI, or other analytical and automation tools.

• Experience developing automated fraud detection, monitoring, and alerting mechanisms.