SONiC Forwarding Developer

We are seeking an experienced SONiC Forwarding Developer with 10+ years of software engineering expertise in low-level systems programming and networking data plane architectures. In this high-impact engineering role, you will design, develop, and benchmark high-performance forwarding software on the Software for Open Networking in the Cloud (SONiC) operating system. You will collaborate directly with top-tier ASIC hardware vendors and cross-functional teams to engineer line-rate L2/L3 forwarding, ACL, and QoS mechanisms for hyper-scale cloud data centers.

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

Job Description

Education Qualification

Label Value Education Qualification Engineer - B.E / B.Tech / MCA

Skills

Primary -> Technology | WAN/LAN/Security | 4 - Advanced 

Primary -> Technology | Cisco | 4 - Advanced 

Primary -> Technology | Palo alto | 4 - Advanced 

Primary -> Technology | Fortinet | 4 - Advanced 

Primary -> Technology | Meraki | 4 - Advanced 

Secondary -> Technology | Zscaler | 4 - Advanced 

Tertiary -> Technology | Cloud Networking | 4 -

Advanced Certification Technology | NSE4 | PCNSE | CCNP | ECMS1 | ZIA/ZPA - Admin | AZ-900/AWS solutions architect (associate)

Contract - 6 Months

Experience - 10-12 years 

Qualifications

• 8+ years of relevant technical I.T. infrastructure or operations experience.
• Experience with, and ability to design, deploy, manage, and troubleshoot wireless & wired network equipment and protocols in a medium-large campus environment.
• In-depth knowledge in WAN transport systems/services, Telecommunications systems/service, LAN switch technology (including Spanning tree, VTP domain management), routing protocols (EIGRP, OSPF, BGP4), Software-Defined technology (SD-WAN).
• Proven ability to manage a multi-vendor WAN, multi-protocol routing, including but not limited to NHRP, EIGRP, BPG4, OSPF and RIPv2.
• Strong hands-on experience on Fortinet SD-WAN, Forti Switch/AP, Forti-Manager, Forti-Analyzer, Fortinet Firewalls.
• Hands-on experience on Switching, Wireless, Firewall and Load balancer technologies (Any OEM).
• Demonstrated ability to manage multiple projects in an efficient manner.
• Proven experience of LAN/WAN/Security design & implementation experience; completing projects wing2wing from planning>design>implementation.
• Work with project managers and other teams to achieve project deadlines.
• Demonstrated excellence in communications, presentation and customer focus skills.
• Certified in Fortinet NSE4 or higher.

Deliverables

• Understand / discuss solution with customer and internal technical teams.
• Take ownership of HLDs and LLDs for SDWAN implementations.
• Build customer relationships to gain a deep understanding of business and technical requirements.
• Implementation of solutions and achieve successful implementation within proposed Project timelines.
• Provide customers with technical guidance that is based on strong technical skills and informed by the customer’s needs.
• Help leads with process improvement – like pre-approved change template creation, effective implementation of internal processes.
• Act as technical mediator between Solutions Team, Product team to review new product implementation guides.