Role Overview
TYLsemi is developing purpose-built connectivity chiplet for HPC/rack-scale AI systems. We are seeking a Principal Engineer Ethernet Scale-up to lead the architecture and design of next-generation Ethernet Scale-Up Networking (ESUN) solution. This is a high-impact technical role.

What You'll Do
- Define architecture for Ethernet-based AI scale-up interconnects and accelerator fabrics.
- Lead development of high-performance Ethernet Subsystem microarchitectures including RDMA, packet processing, network offload, traffic management, congestion control, and reliability mechanisms.
- Drive execution from architecture through RTL, verification, physical design, silicon bring-up, and production.
- Optimize performance, latency, scalability, power, and reliability for demanding AI and HPC workloads.
- Collaborate across hardware, firmware, software, and system teams to deliver industry-leading AI networking solutions.
- Serve as a company-wide technical leader, influencing product strategy, roadmap, and architectural direction.

What We're Looking For




- 15+ years of ASIC/SoC architecture and design experience.
- Proven track record delivering networking, NIC, switch, DPU, accelerator interconnect, or high-speed connectivity silicon.
- Deep expertise in SystemVerilog/RTL design and high-performance datapath architecture.
- Strong knowledge of Ethernet, RDMA, traffic management, congestion control, and scalable fabric architectures.
- Experience across the full ASIC lifecycle, from architecture to production silicon.

Good to Have
- Ultra Ethernet, UALink, RoCEv2, InfiniBand
- PCIe Gen6/Gen7, UCIe, CXL
- AI/HPC interconnects and collective communication acceleration
- 400G/800G/1.6T Ethernet systems
- High-speed SerDes and advanced networking architectures

Success in This Role Looks Like
- Ethernet Scale-Up Networking architecture is defined and validated for next-gen HPC/rack-scale AI systems, with explicit technical direction across accelerator fabrics.
- High

📌 Ethernet Scale (Bengaluru)
🏢 tylsemi
📍 Bengaluru