Sure! Here are six different sample cover letters for subpositions related to "Java Software Engineer," each filled with specific details.

---

### Sample 1
**Position number:** 1
**Position title:** Junior Java Developer
**Position slug:** junior-java-developer
**Name:** Emily
**Surname:** Johnson
**Birthdate:** July 15, 1995
**List of 5 companies:** Apple, Dell, Google, IBM, Microsoft
**Key competencies:** Java, Spring Framework, RESTful APIs, SQL, Agile Development

**Cover Letter:**
Dear Hiring Manager,

I am writing to express my interest in the Junior Java Developer position. I graduated with a degree in Computer Science and have hands-on experience with Java programming and the Spring Framework, which I believe aligns well with your team's requirements.

During my internship at a tech startup, I successfully developed and maintained RESTful APIs, contributing to an agile project environment. My collaborative work with cross-functional teams helped improve user experience by optimizing application efficiency.

I am excited about the opportunity to bring my skills to a respected organization like Apple. Thank you for considering my application.

Sincerely,
Emily Johnson

---

### Sample 2
**Position number:** 2
**Position title:** Java Backend Engineer
**Position slug:** java-backend-engineer
**Name:** Michael
**Surname:** Smith
**Birthdate:** February 23, 1990
**List of 5 companies:** Google, Amazon, Facebook, Oracle, IBM
**Key competencies:** Java, Microservices, Docker, Kubernetes, Cloud Services

**Cover Letter:**
Dear Hiring Manager,

I am eager to apply for the Java Backend Engineer position at Google. With over 4 years of experience developing robust backend systems using Java and microservices architecture, I am confident in my ability to contribute effectively to your team.

My expertise in cloud services, particularly with AWS, has allowed me to successfully deploy containerized applications using Docker and Kubernetes, enhancing both scalability and performance.

I am looking forward to the opportunity to leverage my skills at Google and contribute to innovative projects. Thank you for considering my application.

Best regards,
Michael Smith

---

### Sample 3
**Position number:** 3
**Position title:** Senior Java Software Engineer
**Position slug:** senior-java-software-engineer
**Name:** Sarah
**Surname:** Lee
**Birthdate:** March 30, 1988
**List of 5 companies:** IBM, Cisco, Dell, Oracle, Microsoft
**Key competencies:** Java, J2EE, Spring Boot, Hibernate, Agile/Scrum

**Cover Letter:**
Dear Hiring Team,

I am thrilled to apply for the Senior Java Software Engineer role at IBM. With over 6 years of experience in the software development field, specializing in Java and J2EE technologies, I am poised to make a significant impact on your team.

My role at Cisco involved leading an agile team to develop enterprise-level applications using Spring Boot and Hibernate, which improved overall project delivery times. My focus on code quality and team collaboration has resulted in numerous successful product launches.

I am excited about the possibility of working at IBM, where I can apply my expertise and help drive innovative solutions. Thank you for your consideration.

Warm regards,
Sarah Lee

---

### Sample 4
**Position number:** 4
**Position title:** Java Software Engineer Intern
**Position slug:** java-software-engineer-intern
**Name:** Alex
**Surname:** Garcia
**Birthdate:** December 12, 2001
**List of 5 companies:** Google, Amazon, Apple, Uber, Lyft
**Key competencies:** Java, Object-Oriented Programming, Git, SQL, Team Collaboration

**Cover Letter:**
Dear Hiring Manager,

I am writing to apply for the Java Software Engineer Intern position at Google. As a recent computer science graduate, I am proficient in Java and excited to apply my skills in a dynamic work environment.

I have developed several projects during my coursework, where I practiced object-oriented programming and gained experience using Git for version control. Collaborating with peers on group projects has honed my teamwork abilities, which I consider essential for success in any software development role.

I look forward to the opportunity to learn and contribute to your innovative team at Google. Thank you for considering my application.

Sincerely,
Alex Garcia

---

### Sample 5
**Position number:** 5
**Position title:** Java Application Developer
**Position slug:** java-application-developer
**Name:** Olivia
**Surname:** Martinez
**Birthdate:** August 8, 1992
**List of 5 companies:** Facebook, Oracle, Dell, SAP, Red Hat
**Key competencies:** Java, Spring, SQL, Agile Methodologies, Problem Solving

**Cover Letter:**
Dear Hiring Team,

I am writing to express my interest in the Java Application Developer position at Facebook. With over 5 years of hands-on experience in Java application development, I am well-prepared to contribute to exciting projects within your team.

At Oracle, I developed and implemented Java-based applications, utilizing the Spring framework to enhance functionality and user interaction. My strong problem-solving skills have consistently driven project success and innovation.

I am enthusiastic about the possibility of joining Facebook and contributing to cutting-edge technology solutions. Thank you for this opportunity.

Best,
Olivia Martinez

---

### Sample 6
**Position number:** 6
**Position title:** Full Stack Java Developer
**Position slug:** full-stack-java-developer
**Name:** Benjamin
**Surname:** Wright
**Birthdate:** April 10, 1994
**List of 5 companies:** IBM, Microsoft, Google, Amazon, Cisco
**Key competencies:** Java, JavaScript, React, RESTful Services, Microservices

**Cover Letter:**
Dear Hiring Manager,

I am excited to apply for the Full Stack Java Developer position at IBM. I have three years of experience working with both front-end and back-end technologies, specializing in Java and JavaScript frameworks such as React.

My experience in developing RESTful services and implementing microservices architecture has equipped me with a strong understanding of modern software development practices. I am passionate about optimizing user experience through clean, efficient code.

I look forward to the opportunity to contribute to IBM’s innovative solutions. Thank you for considering my application.

Kind regards,
Benjamin Wright

---

Feel free to adapt these samples as you see fit!