L2/L3 Protocol Development Engineer

1 day ago

Bengaluru, India Maimsd Technology Full time

Job Description - Key Responsibilities : - End-to-End Architecture : Lead the greenfield architecture and design of the entire L2/L3 networking stack, including the data plane (Fast Path) and control plane interactions, for a new platform. - Core Protocol Development : Develop high-performance, scalable, and robust code in Embedded C on Linux for the data plane, focusing on L2/L3 forwarding and feature implementation. - L4-L7 Service Integration : Design, implement, and integrate critical L4-L7 protocols with a mandatory focus on OpenSSL, NAT, IPsec, and MacSec. - NOS Expertise : Leverage your deep understanding of Network Operating System (NOS) internals to ensure seamless integration, performance tuning, and system stability. - Line-Rate Processing : Implement logic for line-rate packet processing, including specific requirements for regular expression (RegEx) matching in the data path. - Container Networking : Architect and integrate solutions for container networking, ensuring efficient and scalable connectivity for modern applications. - Validation & Performance Tuning : Utilize traffic generation tools like IXIA to perform rigorous performance validation, stress testing, and functional verification of the entire software stack. - Technical Leadership & Mentorship : Act as the senior technical authority. Mentor engineers, lead design reviews, and establish a center of excellence for network protocol development within the team. - Required Skills & Qualifications (Must-Haves) : - Experience : 12-18 years of hands-on experience in network protocol development, with a proven track record of architecting complex networking software. - Programming : Expert-level proficiency in Embedded C and a strong command of the Linux development environment. - NOS Internals : Exhaustive, hands-on knowledge of NOS internals, control plane/data plane separation, and Fast Path / data plane acceleration techniques. - L2/L3 Protocols : Deep, architectural understanding of L2 switching (VLANs, STP, LACP) and L3 routing (OSPF, BGP, VRF, ECMP). - L4-L7 Mandatory Protocols : Demonstrable, deep implementation experience with the following : - OpenSSL (Integration, session management, crypto offload) - NAT (SNAT, DNAT, connection tracking) - IPsec (Tunnel/Transport mode, IKEv1/v2, ESP/AH) - MacSec (IEEE 802.1AE) - IP Networking Stack : Comprehensive knowledge of the IP networking stack (TCP/IP, UDP) and packet flow through a system. - Testing Tools : Proven experience using IXIA or Spirent for creating complex traffic profiles, performance benchmarking, and debugging. - Container Networking : Solid understanding of container networking concepts (e.g., CNI, veth pairs, network namespaces, overlays). - Desired Skills & Qualifications (Nice-to-Haves) : - Experience with network processors, DPUs, or SmartNICs (e.g., Broadcom, Marvell, NVIDIA). - Proficiency in Python for automation and testing. - Familiarity with hardware-accelerated regex engines. - Prior experience in a customer-facing or solutions architect role.

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