Telesys STP Engineer
Summary: The Telesys STP Engineer role involves working with a large consultancy on a 6-month contract, requiring a mix of on-site and remote work in London. The position focuses on the installation, configuration, and commissioning of Telesys STP nodes, along with managing SS7 signalling links and integrating STP with core network elements. Candidates should possess strong technical expertise in SS7 protocols and related technologies. This role is classified as inside IR35.
Key Responsibilities:
- Install, configure, and commission Telesys STP nodes.
- Configure point codes, linksets, routes, and Global Title Translation (GTT).
- Manage SS7 signalling links including A links, B links, and C links.
- Prepare MOPs and implementation artifacts for software upgrades and changes.
- Integrate STP with core network elements such as MSC, HLR, SMSC, IN, and signalling gateways.
- Support Legacy SS7 and interworking scenarios based on customer requirements.
- Analyze and troubleshoot signalling failures using traces and logs.
- Perform protocol-level debugging including SCCP and TCAP decoding.
- Optimize routing tables and signalling load distribution.
- Ensure high availability and optimal utilization of STP resources.
Key Skills:
- Strong experience with Telesys STP nodes.
- Knowledge of SS7 protocol stack including MTP Level 1/2/3, SCCP, and TCAP.
- Ability to handle E.164, E.212, and E.214 numbering plans.
- Experience with Diameter signalling in legacy to LTE/5G evolution scenarios.
- Familiarity with bare metal, virtualized, and cloud platforms such as KVM, VMware, and Kubernetes.
- Exposure to CI/CD pipelines and DevOps practices.
Salary (Rate): undetermined
City: London
Country: UK
Working Arrangements: hybrid
IR35 Status: inside IR35
Seniority Level: undetermined
Industry: IT
Telesys STP Engineer
My client, a large consultancy, is in need of a Telesys STP Engineer for a 6 month contract inside IR35 based in London offering 2 days per week remote but requiring 3 days per week on-site.
The ideal candidate will have strong experience in installing, configuring, and commissioning Telesys STP nodes, Configure point codes, linksets, routes, and Global Title Translation (GTT), Configure and manage SS7 signalling links including A links, B links, and C links, Prepare MOPs and implementation artifacts for software upgrades and changes, Integrate STP with core network elements such as MSC, HLR, SMSC, IN, and signalling gateways, Support Legacy SS7 and interworking scenarios based on customer requirements, Strong working knowledge of the SS7 protocol stack:
- MTP Level 1/2/3
- SCCP (connectionless & connection†oriented)
- TCAP (basic operations)
The ideal candidate will be able to Handle E.164, E.212, and E.214 numbering plans, Implement routing logic based on IMSI, MSISDN, and GT patterns, Analyze and troubleshoot signalling failures using traces and logs, Perform protocol†level debugging including SCCP and TCAP decoding, Use tools such as Wireshark/tcpdump for signalling analysis, Optimize routing tables and signalling load distribution, Perform health checks, capacity planning, and performance analysis, Ensure high availability and optimal utilization of STP resources, Understanding of 2G/3G/4G/5G signalling architectures, particularly:
- MAP signalling
- MAP Diameter interworking concepts
The ideal candidate will have Familiarity with Diameter signalling in legacy to LTE/5G evolution scenarios, Experience with bare metal, virtualized, and cloud platforms such as KVM, VMware, Kubernetes based CNF, Exposure to CI/CD pipelines and DevOps practices.
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