Integration Specialist in Telco (OCS / CCS Integration Engineer)
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Deadline: 1 July 2026
Please note:
Some details have been omitted from this job description to ensure that all candidates have an equal chance of being considered for this opportunity.
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Recruiting for a stable European IT & Telecom R&D firm in Slovakia, active since 1997, serving global IT, finance, and telecom leaders. They’re expanding their specialized IT & Telco division and need an Integration Specialist to connect complex network architectures with billing frameworks, enabling large telecom operators to deploy reliable real-time charging.
Job responsibilities
As an Integration Specialist in TELCO, you will be responsible for the design, integration, configuration, testing, and deployment of telecom charging and billing systems, focusing specifically on SurePay and Nokia Converged Charging (NCC) platforms. Your day-to-day duties will include:
System Integration: Ensuring seamless integration of charging capabilities with network elements, service platforms, mediation systems, and billing environments within a telecom operator's infrastructure.
Cross-Functional Collaboration: Collaborating closely with core network, IT, mediation, and service delivery teams to guarantee reliable charging flows for prepaid, postpaid, and hybrid services.
Flow Design & Deployment: Mapping out and managing IMS charging flows, VoLTE/VoNR charging, and packet core architectures.
Troubleshooting & Support: Analyzing logs, troubleshooting complex interface issues, and providing production deployment support for large mobile operator environments.
Job requirements:
A minimum of advanced English skills is required, equivalent to an IELTS score of 6.5–9.0.
4+ years of hands-on experience in telecom systems integration, specifically with charging/billing platforms, OCS/CCS, or charging mediation.
Strong technical expertise with Diameter charging interfaces, alongside deep knowledge of SS7, SIP, and HTTP/REST protocols.
Solid understanding of 2G, 3G, 4G, and 5G mobile network and Packet Core architectures.
Proficiency in Linux/Unix environments, SQL databases, and shell scripting (PERL, CSH, KSH).
Experience handling API integration, CI/CD pipelines, version control systems (Git), and containerized environments.
Direct prior experience with SurePay, Nokia NCC, or large-scale mobile operator prepaid systems (desirable)
Eligibility:
You are eligible to register on the Talent Catalog if you meet both of these criteria.
You are a refugee, a stateless person, or in a situation where you are displaced from your home country and unable to return permanently because you believe that you would face danger or human rights violations there, and,
You do not currently have another lasting solution to resolve your displacement, such as citizenship in another country where you can access human rights.
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