Senior Manager, SIOP (Sales, Inventory & Operations Planning)

Gooch & Housego Pal Alto•Fremont, CA

4h•Onsite

About The Position

G&H is a world leader in optical designing, testing and manufacturing, providing optical systems, assemblies, and components for demanding applications. Headquartered in Ilminster Somerset, UK with primary operations in the USA and Europe, G&H is recognized for its broad range of acousto-optic, electro-optic, crystal-optic, fiber optic, and precision optic products. They are a preferred source for OEMs in the life sciences, industrial, and aerospace and defense industries, with over seventy-five years of history. G&H offers rewarding opportunities and is strategically hiring talent to complement and grow its teams across seven US and four UK business locations, covering functions like engineering, manufacturing, product management, supply chain, customer services, quality assurance, continuous improvement, compliance, and finance. The company is seeking a Senior Manager, SIOP, to lead and mature the end-to-end Sales, Inventory, and Operations Planning process at their Fremont site. This role involves aligning demand, supply, and financial plans for predictable execution, improved delivery, and optimized inventory. The leader will integrate across Sales, Operations, Finance, Engineering, and Supply Chain, bringing structure, visibility, and accountability to planning in a high-mix, technically complex manufacturing environment. The ideal candidate will possess strong analytical capability, operational credibility, and the ability to drive cross-functional alignment in a fast-paced, evolving organization.

Requirements

Bachelor’s degree in supply chain, Operations, Engineering, Business, or related field.
8–12+ years of experience in supply chain, planning, or operations roles.
At least 3–5 years in SIOP leadership.
Experience in high-mix, low-to-medium volume manufacturing (optics, photonics, aerospace/defense, or similar preferred).
Proven track record of implementing or maturing SIOP processes in a complex environment.
Strong understanding of ERP/MRP systems (e.g., SAP, Oracle, or similar).
Strong analytical and problem-solving capability; highly data driven.
Ability to translate complex data into actionable insights.
Executive presence with strong communication and facilitation skills.
Proven ability to influence without authority across functions.
Operational credibility with understanding of manufacturing constraints and workflows.
Strong organizational skills with the ability to manage competing priorities.
Continuous improvement mindset with a bias for action.
Proactive and solutions-oriented; anticipates issues before they arise.
Comfortable operating in ambiguity and building structure where needed.
Collaborative and relationship-driven, with the ability to challenge constructively.
High accountability and ownership mindset.

Nice To Haves

MBA or advanced degree.
APICS/ASCM certification (CPIM, CSCP, or IBF).

Responsibilities

Own and lead the monthly SIOP cycle, including demand review, supply review, pre-SIOP, and executive SIOP meetings.
Establish and continuously improve a standardized, disciplined SIOP process aligned to business growth and operational needs.
Drive alignment between demand forecasts, production capacity, and financial targets.
Partner with Sales and Product Management to develop accurate demand forecasts, including pipeline analysis and scenario planning.
Collaborate with Operations and Supply Chain to translate demand into feasible production and procurement plans.
Balance capacity constraints, lead times, and inventory strategies to optimize service levels and cost.
Develop inventory strategies to reduce excess and obsolete inventory while maintaining service levels.
Establish target inventory levels, safety stock policies, and planning parameters.
Monitor and drive improvements in inventory turns, working capital, and material availability.
Act as the primary point of integration between Sales, Operations, Finance, Engineering, and Procurement.
Facilitate decision-making by surfacing trade-offs, risks, and opportunities.
Ensure alignment between operational plans and financial forecasts.
Develop and maintain reporting dashboards for key SIOP metrics (forecast accuracy, on-time delivery, backlog health, inventory performance, capacity utilization).
Leverage ERP/MRP systems and planning tools to improve visibility and decision-making.
Drive data integrity and standardization across planning inputs.
Identify risks related to demand volatility, supply constraints, and capacity limitations.
Lead scenario planning and contingency planning efforts.
Proactively escalate issues and recommend mitigation strategies to leadership.
Build and develop SIOP/planning capabilities within the site.
Provide leadership, coaching, and direction to planners or analysts (if applicable).
Drive a culture of accountability, data-driven decision-making, and continuous improvement.