SONiC Forwarding Developer

SONiC Forwarding Developer

Experience: 10+ Years

Location: Bangalore / Hyderabad / Delhi / Mumbai

Work Mode: Onsite

Contract Duration: 6 Months

DATA CENTER NETWORKING & SYSTEMS SOFTWARE ENGINEERING

Executive Role Summary

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 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 with ASIC hardware vendors and cross-functional teams to engineer line-rate L2/L3 forwarding, ACL, and QoS mechanisms for large-scale data center networks.

1. Key Responsibilities

• Architect, develop, and maintain high-performance network forwarding software using C and C++, with Python and Go tooling.
• Work with switching silicon/ASIC vendors to implement, validate, and tune hardware-specific forwarding features through SAI.
• Design, implement, and debug forwarding pipelines including ACL, QoS, queue scheduling, and traffic shaping.
• Develop L2/L3 packet switching and routing solutions, including firewall integrations, L2VPN and L3VPN.
• Work with data center networking protocols such as BGP, OSPF, EVPN, and VXLAN.
• Profile and optimize software performance, memory utilization, cache locality, and latency.
• Collaborate with hardware, QA, and network operations teams for testing, debugging, and product delivery.

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

We are looking for an experienced Developer with experience in compiled languages and ready to work in Golang. You will be responsible for the Development of distributed services GUI and terminal application in Golang. Candidates should have strong understanding of Algorithms, Memory Management and Networking 

Required Experience & Skills:

• C/C++/C#/Go/Rust. 
• Networking, Database, Linux, Docker.  
• Multiprocessing, Multithreading, Distributed computing, Thread synchronization techniques.
• Algorithms and data structures.
• Communication protocols, gRPC, MQTT, REST, Modbus, OPC... 
• GUI Programming 
• Testing, Debugging and performance optimization. 
• REST APIs, MySQL, Redis
• Proficiency with Git for version control and collaborative development workflows.

We are hiring high-caliber engineers with 3+ years of experience to build low-latency, high-throughput trading infrastructure in Rust, working directly under senior systems architects. This is a hands-on coding role on performance-critical systems — you will write, test, and ship the core code.

Responsibilities

1. Develop and maintain high-performance backend services in Rust under the guidance of senior engineers
2. Implement components of distributed, fault-tolerant systems handling high transaction volumes
3. Write extensive unit, property-based, and simulation tests for correctness-critical code - Profile and optimize code for latency, throughput, and memory efficiency - Participate in design discussions and rigorous code reviews
4. Debug and resolve issues in Linux-based production environments

Required Qualifications

1. B.Tech/M.Tech in Computer Science from an IIT or NIT (mandatory) - 3+ years of professional software development experience in Rust, C++, or Java/Go with systems-level work; strong Rust proficiency or demonstrated ability to attain it fast - Understanding of financial markets and trading systems — order books, order types, matching concepts, spot and derivatives (futures/options) basics; hands-on experience with trading, broking, or market data systems is a strong plus - Excellent computer science fundamentals — data structures, algorithms, operating systems, networking, concurrency
2. Solid grasp of multithreading and memory management; exposure to performance profiling and benchmarking
3. Understanding of distributed systems concepts — replication, consistency, message queues (Kafka/NATS or similar)
4. Experience with Linux, Git, and modern development workflows
5. Strong problem-solving ability and hunger to work on hard systems problems

Preferred

1. Competitive programming background (Codeforces/ICPC/CodeChef ratings welcome on the CV)
2. Personal or open-source Rust projects
3. Exposure to low-latency techniques — lock-free structures, zero-allocation design, binary protocols (SBE/Protobuf/FlatBuffers)
4. NISM certifications, trading experience (personal F&O/options trading counts), or coursework in financial engineering
5. Exposure to consensus algorithms (Raft), event sourcing, or deterministic testing

Growth Path

You will be mentored directly by senior systems engineers with deep exchange-infrastructure experience, with a defined progression to senior engineer ownership of subsystems within 18–24 months. This team is being built as a center of excellence in low-latency systems engineering in India.

Selection Process

1. Resume shortlisting (college + evidence of strong engineering: projects, CP ratings, internships)
2. Online DSA + systems assessment
3. Live coding round (Rust/C++, performance-oriented problem)
4. Systems and trading-concepts discussion round
5. Culture and ownership round with the senior engineer you will report to

   Compensation: top of market for the experience band, benchmarked against product companies, not services.

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.

We are looking for:

● 12–18 years in the tech industry, with 2–4 years in technical leadership or

managerial roles.

● Technical Expertise: Expertise in C++ development, enterprise architecture, and

scalable system design, and proficiency in performance optimization, scalability,

software architecture, and networking principles.

Extensive experience managing the full development lifecycle of large-scale software

products, from concept to deployment.

● Strong knowledge of STL containers, multi-threading concepts, and algorithms.

Solid understanding of memory management and efficient resource utilization.

● Microservices Architecture Expertise: Experience in designing and implementing

scalable, reliable microservices.

● Strong Communication & Decision-Making Skills: Ability to clearly articulate

trade-offs, make informed decisions, and ensure alignment across stakeholders.

● Commitment to Creating and fostering Engineering Excellence: Deep

understanding of best practices, including code quality, testability, security, and

release management, and passion for fostering a strong engineering culture and

continuously improving developer workflows and tools.

● Self-Driven and Motivated: Ability to operate independently while driving impactful

results.

Required Skills:

• Strong proficiency in C++, with fair knowledge of the language specification.  
• Should have good knowledge of the standard library STL containers, multi-threading concepts and algorithms.
• Good understanding of memory management. Must be familiar with templating in C++
• Knowledge of the latest C++ 17 or above will be an added advantage. 
• Knowledge of writing modules for high-level languages such as Node.js, Python, etc. will be appreciated
• Should have strong Linux development and debugging skills − Candidates with knowledge of Financial domain like equity and trading domain would be an added advantage.
• Mandatory Skills: C++, STL, Multithreading, Socket Programming, LINUX, Memory Management, System Design, Design Patterns, Design & Deployment.