Sr. Signal Integrity Engineer - SI Test Boards & Customer Support

Senior Signal Integrity Engineer - SI Test Boards & Customer SupportLocation: Nashua, NHPosition SummaryThe Senior Signal Integrity Engineer will be responsible for owning, developing,and supporting signal integrity (SI) test boards and customer-facing SIactivities for high-speed interconnect and cable products. This role serves as akey technical interface between customers, internal SI teams, PCB vendors, andproduct engineering, ensuring SI solutions meet both performance and schedulerequirements.Key ResponsibilitiesSI Test Board Ownership & Lifecycle ManagementOwn assigned SI test boards and PCB assets, including revision control,availability, and usage guidance.Maintain and update SI board inventory tracking and documentation.Coordinate PCB reorders, Gerber updates, and PO support with internalteams and external vendors.Support urgent build prioritization and resolve schedule or supplyconstraints.Customer-Facing SI SupportAct as a primary SI technical contact for strategic customers.Support customer requests related to padstack optimization, footprintreview, and stackup alignment.Participate in customer meetings to present SI progress and explaintechnical tradeoffs.SI Analysis, Measurement & ReportingPerform and support SI measurements, including VNA, TDR, and S-parameters.Generate customer-ready technical reports and presentations.Review customer PCB layouts and CAD files for SI compliance.Cross-Functional Collaboration* Work with global SI, layout, product, and manufacturing teams.* Interface with PCB fabrication vendors to resolve technical issues.Required Qualifications* Ph.D. or M.S. in Electrical Engineering or related field (or equivalentexperience).* Strong background in high-speed signal integrity for connectors, cables, andPCBs.Hands-on experience with SI measurements (VNA, TDR, S-parameters).Experience reviewing PCB layouts, padstacks, vias, and stackups.Strong customer-facing communication skills.Preferred QualificationsExperience supporting SI test boards for hyperscale or networking customers.Familiarity with Allegro or similar PCB design tools.Experience working across global engineering and manufacturing teams.#LI-PG2