Core Engineer

First Point Group Nürnberg

Stellenbeschreibung:

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Location: On-site at customer premises (Nuremburg, Germany)

About the Role

We are seeking a skilled Integration & Test Engineer with hands‑on experience in Core and IMS environments. You’ll play a key role in end‑to‑end integration, validation, and testing of IMS and Core Network solutions within a complex multi‑vendor ecosystem.

This role is ideal for engineers who are passionate about core network integration, troubleshooting, and testing automation — and who can thrive in a dynamic, customer‑facing environment.

Key Responsibilities

Perform end‑to‑end testing and validation of IMS and Core solutions, covering functional, non‑functional, load, and security aspects.
Collaborate closely with customer and internal technical teams to identify, analyze, and resolve integration issues during initial and ongoing test phases.
Provide on‑site consultancy and support, guiding customer teams on test setup, execution, and result analysis.
Execute manual test cases and trigger TAF automated test suites; collect and analyze logs to pinpoint root causes of issues.
Act as a liaison between the customer and internal Core Network teams, tracking and escalating issues as needed to ensure timely resolution.
Contribute to test planning, execution, and reporting, ensuring solution quality and compliance with project requirements.

Core Technical Skills & Experience

Strong knowledge of Core and IMS architecture, including integration, validation, and troubleshooting.
Hands‑on experience with key core network nodes, such as:
CSCF (P‑CSCF, I‑CSCF, S‑CSCF)
TAS / SCC AS
HSS / UDM
SBG / SBC (Session Border Controller)
CFX / CMU / SDM
MGCF / BGCF
Nokia CloudBand / CBIS / CBAM / NCS
Proven track record in SBC and CFX functional testing, integration troubleshooting, and validation.
Familiarity with E2E call flows, SIP tracing, and IMS registration analysis.
Experience with TAF (Test Automation Framework) or similar automation tools.
Good understanding of load and security testing methodologies.