3 3GPP Jobs in Bangalore (Bengaluru) | 3GPP Job openings in Bangalore (Bengaluru)

We are actively looking for experienced C++ Developers with strong hands-on experience in 4G/5G Core Network development, particularly Control Plane and Network Programming.

⚡ Immediate Joiners are highly preferred.

🔹 Key Requirements:

• Strong programming skills in C/C++

• Strong knowledge of Data Structures, Algorithms & OOPS

• Hands-on experience in Socket Programming – TCP/UDP, Non-blocking I/O

• Experience with 3GPP message handling, parsing and protocol processing

• Strong hands-on experience in 4G/5G Core Control Plane

• Experience with MME, SGW, PGW, HSS, PCRF, AMF, SMF, UPF, UDM, AUSF, PCF, NRF

• Strong knowledge of Diameter, SIP, GTP-C, GTP-U, PFCP, NAS/NGAP, S1AP, HTTP/2

• Understanding of N1, N2, N3, N4, N6, S1-MME, S1-U, S5/S8 interfaces

• Good understanding of 4G/5G Core Control Plane procedures and call flows

• Strong networking fundamentals: TCP/IP, UDP, Routing, ARP, VLAN, Subnets, L2/L3

• Hands-on Linux development using GCC, GDB, Make and debugging tools

• Experience in low-level debugging, packet flows and performance optimization

🔹 Responsibilities:

• Develop software modules for 4G/5G Core Network systems

• Implement and optimize Control Plane protocol logic

• Work on end-to-end Control Plane call flows

• Debug low-level issues in Control Plane packet flows and system behaviour

• Collaborate with QA/DevOps for network component integration

📌 Priority: Candidates who can join immediately / within a short notice period.

Please ensure the profiles have hands-on 4G/5G Core Networking + Control Plane experience, along with relevant C/C++ development experience

Key Responsibilities

• Primarily responsible for the design, development and testing of LTE features for small cell system being developed by Mavenir
• Software development (code & test) of their modules with no supervision. Ability to do high level design and review low-level design/code.
• Accurate estimation of their work.
• Participate in architecture discussions.
• Adherence to development process and quality metrics.

Job Requirements

• Good understanding of 5G,  LTE and/or UMTS standards.
• Knowledge of 3GPP NR, EUTRAN procedures.
• Knowledge on any of the protocols like RRC, MAC, RLC, LTE/NR L3/L2 protocol stacks.
• Knowledge of RRM, Tr069 interface, NETCONF, YANG.
• Experience of developing UNIX/Linux applications.
• Excellent knowledge of C, data structures and operating systems.
• Knowledge of Network virtualisation concepts will be a plus.
• Experience of any of the following would also be an advantage: IP Networks and Protocols, SCTP, MTP3, M3UA, SS7, SCCP, HNBAP, RUA, RANAP, S1AP, GTP
• Good knowledge of any of version control system like SVN, MKS, clearcase.
• Good team player with knowledge of Agile methodology will be a plus