C/C++ Developer-4G/5G Core

Hiring Squad; Kolkata District; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Hiring Squad is seeking a Software Developer for 4G/5G Core with 3 to 5 years of experience to write system-level code and implement protocol logic for telecom products.

You will work on core network components, 4G/5G protocol handling, and end-to-end control and data plane call flows in a remote setup, using Linux, GCC, GDB, and Make tools.

Qualifications

• C/C++ mandatory proficiency.
• Strong data structures and algorithms knowledge.
• Experience with 3GPP protocols and core network handling.
• Linux-based development with gcc/gdb/make.

Responsibilities

• Develop software modules for Core/Networking systems.
• Implement protocol logic with performance optimizations.
• Work on end-to-end control plane and data plane flows.
• Debug low-level issues in packet flows and system behaviour.
• Collaborate with QA/DevOps for integration with external components in 4G/5G network.

Skills

C/C++

Data structures

Algorithms

OOP concepts

Socket programming

3GPP protocols

Linux development

Tools

gcc

gdb

make

Job description

Role & responsibilities

Software Developer 4G/5G Core (3 to 5 yrs)

Location

Remote

About the Role

Youll write system-level code, implement protocol logic and build components used in telecom or networking products.

Requirements

Languages

C/C++ (Mandatory)

Core CS Knowledge

Data structures, algorithms, OOPS concepts (mandatory)

Network Programming: (Mandatory)

• Socket programming (TCP/UDP sockets, non-blocking I/O)
• Experience in 3GPP message handling and parsing of received socket buffers specific to 3GPP protocols for 4G/5G control plane and user plane.

Telecom Domain 4G/5G Core (mandatory)

• Core Network Components:
  • 4G: MME, SGW, PGW, HSS, PCRF
  • 5G: AMF, SMF, UPF, UDM, AUSF, PCF, NRF
• Protocols:
  • Diameter, SIP, GTP-C, GTP-U, PFCP, NAS/NGAP, S1AP, HTTPv2
• Interfaces:
  • N1, N2, N3, N4, N6, S1-MME, S1-U, S5/S8
• Understanding of 4G/5G core procedures.

Networking Fundamentals

TCP, UDP, IP, Routing tables, ARP, VLANs, Subnets, L2/L3 concepts

Operating System

Comfortable with Linux based development (gcc, gdb, make, debugging tools)

Responsibilities

• Develop software modules for Core/Networking systems
• Implement protocol logic with optimization for performance improvements
• Work on end-to-end control plane as well as data plane call flows
• Debug low-level issues in packet flows and system behaviour
• Collaborate with QA/DevOps for integration with external components in the 4G/5G network