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[BLR] Network Security Protocols (Macsec) Software Development – Technical Lead
Arrcus Inc
Bengaluru, IND
Full-time
Senior Level
Onsite
Discovered Yesterday
Free
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- Work with customer and product teams to understand new requirements
- Write Feature Spec covering the requirements and detailed design
- Implement improvements and features individually or as part of a team
- Triage, resolve internal and customer found issues
- Evaluate, Integrate third party libraries
- Peer review of Feature Spec, Code, Test Plan and other engineering documents
- Improve performance/scale of existing features/solutions
- Help with interview, onboarding and mentoring of new hires
- Plan, schedule, track and periodically report the project status all the way to customer delivery
- 8+ years of relevant hands-on software development experience.
- Strong programming skills in C/C++ and Python.
- Strong AI experience with Claude is required
- Strong understanding and hands-on experience with MACsec and MKA protocol stack development.
- Hands-on experience with IEEE 802.1X-2010/2020 MKA: CAK/CKN, SAK derivation and distribution, key server election, EAPOL-MKA PDU handling, and live/potential peer state management.
- Strong understanding of IEEE 802.1AE (MACsec), including SecTAG, SCI, secure channel and secure association lifecycle, ICV, and replay protection.
- Good understanding of networking concepts and protocols.
- Experience developing software for networking products, routers, switches, security appliances, or similar systems.
- Strong debugging and problem-solving skills.
- Experience working in a Linux/Unix environment.
- Ability to analyze complex system-level issues and develop robust solutions.
- Strong communication and collaboration skills.
- Experience with XPN (GCM-AES-XPN-128/256), 64-bit packet numbering, SSCI/salt derivation, and 802.1AEbw.
- Experience with PSK-based and 802.1X/EAP-derived CAK, including RADIUS and MSK-based key hierarchies.
- Experience with cryptographic algorithms and encryption technologies such as AES-GCM, AES-CMAC, and AES Key Wrap.
- Familiarity with cipher suite negotiation, confidentiality offset, validateFrames modes, and delay protection.
- Experience with MACsec over LAG/port-channel and switch-to-switch and host-to-switch deployment models.
- Knowledge of Ethernet, IPv4/IPv6, VLAN, routing and switching.
- Familiarity with IEEE8021-SECY-MIB counters and protocol-level troubleshooting using per-SA/SC statistics.
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