Voice Signalling Designer - Ericsson Node and Nokia SDM

Reading
5 days ago
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Job Title: Voice Signalling Designer - Ericsson Node and Nokia SDM

Location: Reading

Start Date: End of March

Job Type: Contract 6 months + 6 months likely to extend

Iam working with a leading telecommunications provider, delivering reliable and high-speed connectivity solutions to both businesses and consumers. Its services include mobile, broadband, and network infrastructure, supporting seamless communication in an increasingly digital world. With a strong focus on innovation and customer experience, the organisation enables clients to stay connected, productive, and future-ready.

We are seeking an experienced Mobile Core Signalling Designer for a major Voice Core and Subscriber Data Management (SDM) transformation programme Reading.

Key Responsibilities:

Design and produce HLDs/LLDs for Ericsson and Nokia signalling platforms

Lead migrations of Ericsson DSC, HLR/HSS, and IPSTP nodes to cloud-based or virtualised environments

Design subscriber data migration solutions from Ericsson HLR/HSS to Nokia SDM

Collaborate on Nokia SDM CNF transformation (VNF → private cloud)

Integrate and consolidate signalling nodes while ensuring 5G compliance

Essential Skills & Experience:

Ericsson Platforms: DSC, IPSTP, HLR, HSS - hands-on design & migration experience required

Nokia Platforms: SDM, VNF/CNF deployment, subscriber migration experience required

Strong signalling knowledge, including Diameter routing & protocols

Proven ability to produce high-quality HLD/LLD artefacts independently

Core network design and traffic migration/integration experience

Disclaimer
Notwithstanding any guidelines given to level of experience sought, we will consider candidates from outside this range if they can demonstrate the necessary competencies.
Square One is acting as both an employment agency and an employment business, and is an equal opportunities recruitment business. Square One embraces diversity and will treat everyone equally. Please see our website for our full diversity statement

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