Work Experience: 15+ Years

Department: Information Systems IoT, Voice & Roaming Architecture.

About the Role:

We are seeking a highly experienced and visionary Architect to join the Voice, Mobile Roaming, and IoT Architecture group within iBASIS. In this strategic role, you will lead the end-to-end architecture, design, and evolution of our global Voice, Roaming, and IoT platforms.

You will define technical roadmaps, drive cross-domain solution architecture, and ensure the scalability, reliability, and security of all signaling, roaming, and IoT services. This role is central to iBASISs mission to remain a global leader in IPX, mobile roaming, and next-generation IoT connectivity.

You'll Bring:

1. Bachelors or masters degree in electrical engineering, Telecommunications, or Computer Science with 15+ years of experience in the telecommunications domain.
2. Deep expertise in Voice (TDM & VoIP), Mobile Roaming, and IoT architectures, including end-to-end service design.
3. Extensive hands-on and architectural experience with 3G, 4G, and 5G signalling: MAP, Diameter, SIP/IMS, HTTP/2, GTP-C/U, SBA interfaces, and interworking models.
4. Strong understanding of roaming technologies, including SS7, Diameter Roaming, LTE/VoLTE Roaming, 5G interface, IPX models, and fraud/security frameworks.
5. Proven experience designing and integrating mobile core systems such as HLR/HSS, STP/DRA, SMSC, MME/AMF, SGW/UPF, PGW/SMF, IMS Core, SBCs, and GTP proxies.
6.



Expertise in IoT connectivity architectures, eSIM/eUICC, CMP platforms, SIM provisioning flows, and GSMA M2M/IoT standards.
7. Ability to lead cross-functional engineering teams, influence stakeholders, and drive architectural governance.
8. Strong analytical mindset with the ability to be highest level of knowledge for troubleshooting complex signaling and roaming issues across multi-vendor environments.

Good to Have:

1. Experience working with telecom operators, carriers, or global IPX providers.
2. Active participation or collaboration with GSMA, 3GPP, IETF, or similar standards bodies.
3. Solid documentation and architectural modeling skills (UML, sequence flows, high-level and low-level design).
4. Experience with eSIM/Remote SIM Provisioning, SIM Toolkit, and GSMA SGP.02/22/32 specifications.
5. Familiarity with REST APIs, microservices, and cloud-native architectural patterns.

Likely to Have

1. Strong background in IP networking, routing protocols (BGP, OSPF), MPLS, VPNs, and interconnect architectures.
2. Hands-on experience with scripting or automation (Python preferred) for testing, validation, and network automation.
3. Working knowledge of network and signaling test tools such as Spectra, Wireshark, Comprion, Keysight, Spirent, or similar.
4. Experience designing or operating large-scale distributed systems with high availability and low latency requirements.

📌 Architect - Voice/ Mobile Roaming & IoT (Telangana)
🏢 IBASIS
📍 Telangana