Senior Full Stack Java Developer - Freelance

Senior Full Stack Java Developer - Freelance

Join to apply for the Senior Full Stack Java Developer - Freelance role at ILIAS Solutions.

Opportunity

Join ILIAS Solutions and contribute to making mission critical products for the defense industry. We are seeking an experienced Senior Full Stack Java Developer to join our Data Platform team within the Defense Capability Management unit. In this role, you will work autonomously to design secure, reliable, and scalable applications that support vital operations. If you are a strong communicator ready to apply your skills in Java and Spring Boot to high stakes challenges, we want to meet you.

Your Mission Key Responsibilities

• Design, develop, and maintain full stack applications using Java and Spring Boot
• Write clean, maintainable, and well tested code
• Work with relational databases (PostgreSQL, Oracle, SQL Server) to design schemas, write queries, and ensure data integrity
• Integrate and manage object storage systems (MinIO)
• Collaborate with data teams on Apache Spark and Python based integrations
• Participate in code reviews, technical discussions, and architectural decisions
• Ensure applications are secure, reliable, and scalable
• Contribute to team knowledge sharing
• Troubleshoot and resolve complex technical issues across the full stack

Your Capabilities Required Technical Skills Backend Development

• Java - Advanced proficiency with modern Java
• Spring Boot - Extensive experience building RESTful APIs
• Database Management - Strong SQL skills with hands on experience in PostgreSQL, Oracle Database, SQL Server
• Object Storage - Experience with MinIO or similar S3 compatible storage solutions

Frontend Development

• Solid foundation in HTML, CSS, JavaScript, JSP, and Thymeleaf
• React experience is a plus

Data Processing & Analytics

• Experience with distributed data processing using Apache Spark
• Python experience is a plus

Additional Technical Requirements

• RESTful API design and implementation
• Version control systems (Git)
• Build tools (Maven)
• Container technologies (Docker preferred)
• Testing frameworks (JUnit, etc.)

Required Experience & Qualifications

• Bachelor's degree in Computer Science, Software Engineering, or equivalent experience
• 5+ years of professional software development experience
• Proven experience with Java and Spring Boot
• Proven experience working with multiple database systems
• Experience with both SQL and NoSQL databases
• Strong understanding of the software development lifecycle and agile methodologies

Personal Attributes

• Independent Worker - Able to take ownership of projects and work with minimal supervision
• Team Player - Collaborative mindset with excellent communication skills
• Problem Solver - Strong analytical and troubleshooting capabilities
• Adaptable - Comfortable working with diverse technologies and evolving requirements
• Quality Focused - Writes clean, maintainable, well documented code
• Continuous Learner - Passionate about staying current with technology trends and best practices

Exited and ready to explore how you could fit in? Apply directly or reach out to for any questions. We are thrilled to get to know you!

About Us

ILIAS Solutions offers exciting opportunities to shape the future of armed forces operations. As a global leader in defense logistics software, we empower military commanders worldwide to optimize operations, training, and missions. Our innovative platform covers the entire armed forces value chain, ensuring efficient execution and capturing vital information. As we continue to grow, we are looking for talented reinforcement who will make a difference every day. Join our international team and make an impact on global security.