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Mobile Fraud Analyst

Webbing
Bucharest, Romania Posted Oct 21, 2026
Full-time

About this role

About Webbing

Founded in early 2010, Webbing is a global data MVNO that delivers enterprise grade, global connectivity and IoT services across more than 200 countries and 600+ mobile carriers' networks. Webbing's secured network delivers network protection and web content intelligence.

Enterprise customers can manage, monitor, and optimize data usage in real-time with Webbing's powerful software platform. Gain visibility by application type and have the power to white list applications and limit non-business applications with the click of a button, saving money and improving compliance.

Description

  • 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.

What we offer

  • An exciting and challenging workplace with great skill and knowledge development opportunities.

  • The opportunity to join a team of highly professional specialists in an international environment.

  • The opportunity for professional development within a reputable international innovative and growing company.

  • Meal Vouchers.

  • Medical insurance.

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