IMS Software Architect (m/f/d)

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About ng-voice: committed to building the next generation of 100% software-based mobile networks and creating innovative mobile infrastructure solutions for operators and enterprises.

Overview

We’re hiring an IMS Software Architect (m/f/d) to lead the design and evolution of our IMS (IP Multimedia Subsystem) solution. You will define and drive the architecture of next-generation IMS components, ensuring scalability, reliability, and alignment with 3GPP standards. Collaborate with product, R&D, and cross-functional teams to deliver future-proof telecom solutions.

What you will do

• Provide architectural guidance on cloud-native network functions (CNF).
• Partner with development teams to ensure architectural compliance and best practices.
• Implement complex requirements in an easy and effective manner using C/Go/Python languages.
• Define performance, scalability, and resiliency targets for IMS components.
• Define end-to-end architecture for new IMS core components (e.g., P-CSCF, I-CSCF, S-CSCF, BGCF, HSS/UDM, TAS).
• Ensure alignment with 3GPP and ETSI standards for IMS and VoLTE/VoNR solutions.
• Design scalable, cloud-native, microservices-based IMS components.
• Work with product management to translate business requirements into architectural blueprints.
• Prepare high-level and low-level design documents, architecture diagrams, and interface specifications.

Requirements

• Extensive experience designing IMS network elements and understanding of IMS call flows.
• Strong knowledge of SIP, Diameter, RTP, and other telecom protocols.
• Experience with cloud-native architectures, containerization, and orchestration (Kubernetes).
• Strong understanding of VoLTE, VoWiFi, and 5G voice solutions (VoNR).
• Strong problem-solving, analytical, and documentation skills.
• Excellent communication skills and ability to work cross-functionally.
• Experience with Kamailio, FreeDiameter, or similar open-source telecom frameworks.

Benefits

• Work-Life-Balance is a priority: Flexible hybrid remote culture.
• Diverse team representation and inclusive culture.
• Culture of a fast-growing startup with enterprise maturity.
• Valuing experience and knowledge over formal degrees.
• Entrepreneurial culture and flat hierarchies.
• Mobility, fitness, language class, and wellness benefits for full-time employees.
• Home office budget for full-time employees.

Details

• Seniority level: Mid-Senior level
• Employment type: Full-time
• Job function: Software Development
• Industries: Software Development

About us: ng-voice is an equal opportunity employer. We value diverse backgrounds and perspectives and believe they contribute to growth and performance. We welcome applications from all qualified individuals.

Please note: We are currently not collaborating with agencies and any profiles received will not be considered.