Senior Datacom Architect — All-Optical Timing & Sync

LumiSync; Palaiseau; Sur place; EUR 90 000 - 140 000; Plein temps

Résumé du poste

LumiSync is seeking an Expert Engineer in Datacom Infrastructure for All Optical Synchronization (CDI) to accelerate integration of the LumiSync Photonic Oscillator into high-speed datacom switches and data center architectures.

You will define architectures, ensure interoperability with SerDes/PHY, and contribute to the product roadmap while collaborating with hyperscalers and switch vendors to enable energy-efficient optical synchronization in next‑gen networks.

Qualifications

• 5–10 years in datacom infrastructure, data center networking, or timing circuits.
• Strong experience with electronic timing architectures (VCOs, PLLs, CDR) and synchronization protocols.
• Experience with SERDES/PHY, switch fabrics, and optical control planes.

Responsabilités

• Define and refine integration strategies to replace electronic oscillators, retimers, PLLs, and CDR with photonic oscillator in switches and TOR devices.
• Design architectures where photonic oscillator is the native timing reference across racks, switches, and servers.
• Analyze SerDes/PHY requirements for interoperability with next-generation ASICs and switch fabrics.
• Develop timing protocols enabling phase alignment and jitter tolerance without electronic CDR.
• Evaluate impact on BER, PAM4/NRZ signaling, eye diagrams, and link stability.
• Assess compatibility with Ethernet/PTP/SyncE/White Rabbit and plan migration to fully optical synchronization.
• Contribute to product specs for LumiSync master/slave units, including interfaces and packaging.
• Collaborate with hyperscalers and switch vendors to validate the technology in data-centre environments.

Connaissances

Datacom infrastructure

Switches/SerDes/PHY

Timing architectures

Phase noise & jitter

BER testing & eye diagrams

FPGA-based testing

Autonomy

Experimentation

Formation

MSc/PhD in telecommunications or photonics

Outils

Oscilloscopes

Spectral analyzers

FPGA tooling

Description du poste

LumiSync is seeking an Expert Engineer in Datacom Infrastructure for All Optical Synchronization (CDI) to accelerate integration of the LumiSync Photonic Oscillator into high-speed datacom switches and data center architectures.

You will define architectures, ensure interoperability with SerDes/PHY, and contribute to the product roadmap while collaborating with hyperscalers and switch vendors to enable energy-efficient optical synchronization in next‑gen networks.