Demand Planner / SIOP (Sr Spec, Production Planning)

L3Harris Technologies, Inc.; Anaheim (CA); On-site; USD 79,000 - 147,000; Full time

Benefits offered by this job

Health and disability insurance

401(k) match

Education assistance

Parental leave

Paid time off

Job summary

L3Harris Technologies, Inc. is seeking a Sr Spec., Production Planning (Demand Planner / SIOP) in Anaheim, CA. You will lead demand data gathering and forecasting for an 18–24 month horizon, aligning demand with supply across multiple sites and guiding monthly SIOP reviews.

You will collaborate with cross-functional teams including BD, PMO, and Engineering, leveraging ERP/Costpoint to optimize inventory and production plans. Occasional travel is expected.

Qualifications

• Minimum 4 years of planning, operations, manufacturing, or supply chain experience.
• At least 2 years of demand planning experience, preferably across multiple sites.
• 4+ years with SIOP processes and principles.
• 4+ years of ERP experience (Deltek Costpoint) in demand/inventory management.
• 2+ years of supply chain best practices including inventory optimization and risk management.
• 2+ years of demand planning software proficiency; advanced Excel and Power BI.

Responsibilities

• Lead data collection and consolidation of demand info from multiple sites.
• Develop and maintain an 18–24 month demand plan incorporating internal and external factors.
• Monitor changes, identify risks and opportunities, and adjust plans.
• Prepare and lead SIOP meetings to align demand with priorities and capabilities.
• Communicate forecasts and insights to stakeholders for inventory and production planning.
• Collaborate with BD, PMO, and Engineering to understand customer requirements and opportunities.
• Create reports and metrics tracking demand planning, forecasting, and SIOP objectives.
• Drive continuous improvement of demand planning accuracy and efficiency across sites.
• Travel up to ~10% to various sites.

Skills

Demand planning

SIOP

Forecasting

Excel

Power BI

Cross-functional collaboration

Data analysis

Communication

Education

Bachelor's degree

Master's degree (preferred)

Tools

Deltek Costpoint

ERP systems

MRP systems

Job description

Job Title: Sr Spec., Production Planning (Demand Planner / SIOP)

Job Code: 45171

Job Location: Anaheim, CA (On-Site)

Schedule: 9/80 Regular (Employees work 9 out of every 14 days – totaling 80 hours worked – and have every other Friday off)

Job Description:

As a Demand Planner for L3Harris, you will play a critical role in supporting the Sales, Inventory, and Operations Planning (SIOP) process across one or more manufacturing sites. Your primary responsibility will be to serve as the main point of contact for gathering and tracking demand data from various sources to be used in decision-making for future planning processes. You will collaborate with cross-functional teams to consolidate demand information, including firm Sales Orders and speculative demand such as New Business, Follow On, Customer Options, Repair and Return MRO, and Engineering IRAD, while developing forecasts for commercial contracts and customers. Your role will be instrumental in creating a comprehensive demand plan that spans the next 18-24 rolling months, ensuring alignment between demand and supply plans across the organization. This role will be critical in the execution of the monthly demand reviews, as the data collected, presented, and agreed to will feed the overall SIOP cadence and cycle.

Essential Functions:

• Act as the primary liaison between multiple sites and cross-functional teams to gather, consolidate, and analyze demand data.
• Collect and interpret demand inputs including Sales Orders, customer forecasts, market trends, and historical sales data.
• Develop and maintain an accurate 18–24 month demand plan incorporating internal and external factors.
• Monitor demand changes and proactively identify risks, opportunities, and required adjustments.
• Prepare for and lead SIOP meetings, ensuring demand plans align with business priorities, market conditions, and operational capabilities.
• Communicate demand forecasts and insights to stakeholders, providing recommendations for inventory and production planning.
• Collaborate with Business Development, PMO, and Engineering to understand customer requirements, market dynamics, and upcoming opportunities.
• Create and maintain reports and metrics that track demand planning, forecasting, and SIOP objectives.
• Drive continuous improvement to enhance accuracy, efficiency, and effectiveness of demand planning processes across multiple sites.
• Lead and influence stakeholders without direct authority to drive alignment.
• Adapt to changing business needs and adopt new tools/technologies to improve demand planning.
• Manage multiple priorities effectively in a fast-paced environment.
• Flexibility to travel occasionally to various sites, 10% approx..

Qualifications:

• Bachelor’s degree and 6+ years of related experience; Master’s degree and 4+ years; or 10+ years of relevant experience in lieu of a degree.
• Minimum 4 years of experience in planning, operations, manufacturing, or supply chain.
• At least 2 years of demand planning experience, preferably within aerospace & defense and supporting multiple sites.
• 4+ years working with SIOP processes and principles.
• Minimum 4 years of experience with ERP systems (specifically Deltek Costpoint) in demand and inventory management.
• 2+ years of experience with supply chain best practices including inventory optimization and risk management.
• At least 2 years of experience with demand planning software and advanced proficiency in Excel and Power BI.

Preferred Additional Skills:

• Degree in Operations Management, Supply Chain Management, Engineering, or related technical field.
• Knowledge of aerospace & defense industry regulations, market dynamics, and customer requirements.
• Experience supporting IPT requirements in a Program Management and Engineering‑driven organization.
• Proficiency with MRP systems and related planning tools.
• Expertise in master scheduling, capacity planning, production planning, and inventory management.
• APICS/ASCM certifications (CPIM, CSCP) preferred.
• Strong communication and interpersonal skills with the ability to collaborate across functions and levels.
• Proactive, results‑oriented mindset with a focus on continuous improvement.
• Strong analytical skills with the ability to interpret data and generate actionable insights.
• Detail‑oriented with high accuracy in data analysis and reporting.
• Commitment to continuous learning and professional development in supply chain and demand planning.

In compliance with pay transparency requirements, the salary range for this role is $79,000 - $147,000. This is not a guarantee of compensation or salary, as final offer amount may vary based on factors including but not limited to experience and geographic location. L3Harris also offers a variety of benefits, including health and disability insurance, 401(k) match, flexible spending accounts, EAP, education assistance, parental leave, paid time off, and company-paid holidays. The specific programs and options available to an employee may vary depending on date of hire, schedule type, and the applicability of collective bargaining agreements.

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L3Harris Technologies is proud to be an Equal Opportunity Employer. L3Harris is committed to treating all employees and applicants for employment with respect and dignity and maintaining a workplace that is free from unlawful discrimination. All applicants will be considered for employment without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender (including pregnancy, childbirth, breastfeeding or other related medical conditions), gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, characteristic or membership in any other group protected by federal, state or local laws. L3Harris maintains a drug‑free workplace and performs pre‑employment substance abuse testing and background checks, where permitted by law.

Please be aware many of our positions require the ability to obtain a security clearance. Security clearances may only be granted to U.S. citizens. In addition, applicants who accept a conditional offer of employment may be subject to government security investigation(s) and must meet eligibility requirements for access to classified information.

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