Sure! Here are six sample cover letters for different subpositions related to the role of "resource planner," complete with the fields you've provided.

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**Sample 1**
- Position number: 1
- Position title: Resource Allocation Analyst
- Position slug: resource-allocation-analyst
- Name: Jane
- Surname: Doe
- Birthdate: March 5, 1990
- List of 5 companies: Apple, Dell, Google, Microsoft, Amazon
- Key competencies: Data analysis, project management, cost estimation, resource scheduling, stakeholder communication

**Cover Letter:**
Dear Hiring Manager,

I am writing to express my interest in the Resource Allocation Analyst position at your esteemed company. With a solid background in data analysis and project management, I have a track record of effectively allocating resources to optimize operational efficiency.

At Apple, I successfully led a project that reduced resource allocation costs by 20% through data-driven strategies. My crucial involvement in stakeholder communication ensured alignment with project goals, enhancing team productivity.

I am excited about the opportunity to bring my expertise in resource scheduling and cost estimation to your team. I look forward to discussing how I can contribute to your company's success.

Sincerely,
Jane Doe

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**Sample 2**
- Position number: 2
- Position title: Capacity Planning Specialist
- Position slug: capacity-planning-specialist
- Name: John
- Surname: Smith
- Birthdate: June 12, 1985
- List of 5 companies: Apple, Dell, Google, IBM, Oracle
- Key competencies: Demand forecasting, inventory management, supply chain optimization, analytical thinking, strategic planning

**Cover Letter:**
Dear Selection Committee,

I am eager to apply for the Capacity Planning Specialist role within your organization. With extensive experience in demand forecasting and inventory management, I excel at predicting resource needs to ensure seamless operations.

During my tenure at Google, I developed innovative strategies that improved supply chain optimization processes, resulting in a 15% reduction in excess inventory. My analytical thinking style enables me to identify trends and adjust plans accordingly, serving as a solid foundation for your team.

I look forward to the opportunity to contribute my skills in strategic planning and demand forecasting to your business initiatives.

Best regards,
John Smith

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**Sample 3**
- Position number: 3
- Position title: Resource Management Coordinator
- Position slug: resource-management-coordinator
- Name: Emily
- Surname: Johnson
- Birthdate: October 22, 1992
- List of 5 companies: Apple, Dell, Google, Facebook, Twitter
- Key competencies: Team leadership, communication skills, conflict resolution, scheduling, resource allocation

**Cover Letter:**
Dear Hiring Team,

I am writing to express my enthusiasm for the Resource Management Coordinator position within your reputable company. With a strong focus on resource allocation and team leadership, I am confident in my ability to effectively manage human and material resources.

At Facebook, I coordinated efforts across diverse teams, fostering open communication and resolving conflicts swiftly, which led to a harmonious team environment. My experience in scheduling has been vital in maximizing productivity without compromising on quality.

I am excited about the prospect of bringing my skills in resource management and communication to your esteemed team.

Warm regards,
Emily Johnson

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**Sample 4**
- Position number: 4
- Position title: Operations Resource Planner
- Position slug: operations-resource-planner
- Name: Michael
- Surname: Brown
- Birthdate: February 15, 1987
- List of 5 companies: Apple, Dell, Google, HP, Cisco
- Key competencies: Operations management, risk assessment, analytical skills, collaboration, budgeting

**Cover Letter:**
Dear [Hiring Manager's Name],

I am pleased to submit my application for the Operations Resource Planner position at [Company Name]. My background in operations management and risk assessment has equipped me to drive efficiency and meet budgetary constraints effectively.

While working at Cisco, I implemented new processes that reduced resource-related risks by 30% over a fiscal year. My analytical skills allow me to forecast needs accurately, thus enabling the team to function without unnecessary disruptions.

I am passionate about enhancing operational success and would welcome the opportunity to discuss my qualifications further.

Sincerely,
Michael Brown

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**Sample 5**
- Position number: 5
- Position title: Project Resource Planner
- Position slug: project-resource-planner
- Name: Sarah
- Surname: Williams
- Birthdate: September 30, 1989
- List of 5 companies: Apple, Dell, Google, Adobe, Salesforce
- Key competencies: Project budgeting, resource scheduling, monitoring & evaluation, leadership, negotiation

**Cover Letter:**
Dear Hiring Committee,

I am excited to apply for the Project Resource Planner position at [Company Name]. My experience in project budgeting and resource scheduling has prepared me to contribute significantly to your team.

At Adobe, I honed my leadership and negotiation skills while managing multiple concurrent projects, ensuring optimal resource allocation throughout. My focus on monitoring and evaluation enables timely adjustments for project success.

I am eager to bring my strong capabilities in project management and collaboration to your esteemed organization.

Thank you for considering my application.

Best,
Sarah Williams

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**Sample 6**
- Position number: 6
- Position title: Strategic Resource Planner
- Position slug: strategic-resource-planner
- Name: David
- Surname: Wilson
- Birthdate: December 18, 1984
- List of 5 companies: Apple, Dell, Google, Intel, Lockheed Martin
- Key competencies: Long-term planning, performance measurement, resource optimization, analytical skills, teamwork

**Cover Letter:**
Dear [Hiring Manager's Name],

I am writing to express my interest in the Strategic Resource Planner position at [Company Name]. My background in long-term planning and resource optimization has enabled me to play a crucial role in operational success across various projects.

At Intel, I developed key performance measurement systems that helped streamline resource allocation and improve decision-making processes. With my analytical skills and collaborative approach, I thrive in team environments focused on shared objectives.

I look forward to the chance to contribute to your organization with my strategic insights and planning expertise.

Warmest regards,
David Wilson

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Feel free to customize any of these samples according to specific details or experiences!