Telecom Services Validation Engineer

DESCRIPTION

Role Overview

Webbing’s telecom platform is composed of multiple deeply integrated systems, each owned by a specialized technical team. Because service quality depends on how these components interact in production, this role owns end-to-end service validation and service-level accountability across Data, Voice, and SMS.

For every new service or feature, this engineer designs and executes end-to-end testing to ensure all system components integrate correctly and deliver the expected customer experience. When issues occur, they investigate the full-service flow to determine where responsibility lies and ensure the issue is escalated to the correct owning team with clear technical context.

This role does not own or fix individual system components; it owns understanding how components interact and determining which team is responsible when something breaks.

Key Responsibilities

End-to-End Testing & Validation

• Design and execute end-to-end test plans for Data, Voice, and SMS services across:
• Core network components
• CMP integrations
• External vendors, carriers, and aggregators
• Perform functional, integration, regression, sanity, and production-readiness testing
• Validate new services, features, and cross-system changes before production rollout
• Build automated tests for end-to-end telecom flows using APIs and backend interfaces.
• Research, evaluate, and integrate telecom testing tools and platforms (e.g., Sigos or similar), including use of available APIs 

Troubleshooting complex issues

• Act as the end-to-end service triage owner for complex issues escalated from Support 
• Investigate incidents across the full-service flow to determine which domain or team owns the issue (e.g., Core, IP, R&D, Vendor, Carrier) 
• Analyze logs, CDRs, signaling flows, and system behavior to identify the responsible component, and escalate to the correct team.
• After every escalation, update procedures or service documentation so that future similar issues can be routed directly by Support.

Documentation & Knowledge Enablement

• Own end-to-end service clarity, ensuring that documentation for flows, dependencies, and failure scenarios exists and is understandable by Support 
• Validate that troubleshooting procedures are clear, accurate, and actionable for NOC and Customer Support teams
• Identify documentation gaps exposed during incidents and drive the relevant teams to create or update content
• Ensure lessons learned from escalations are reflected in procedures so Support can independently handle future cases

REQUIREMENTS

• 5+ years of experience in troubleshooting complex issues in the telecom world.
• Strong understanding of telecom services and flows (Data, Voice, SMS)
• Ability to analyze logs, backend systems, and service behavior across multiple components
• Strong analytical thinking and troubleshooting mindset
• Ability to work independently and cross-functionally
• Fluent English with clear technical communication skills

Advantages

• Experience with mobile core networks, roaming, or telecom operations
• Familiarity with 2G / 3G / 4G / 5G architecture and signaling
• Experience using packet analysis tools (e.g., Wireshark)
• Knowledge of IP networking and protocols (TCP/IP, routing, firewalls, network security)
• Experience working closely with NOC or Customer Support teams.
• Exposure to telecom testing platforms (e.g., Sigos or similar tools)
• Experience testing APIs (REST/SOAP) using tools such as Postman, Swagger, or curl
• Experience with bug tracking and test management tools