Freelance Java Backend Developer Jobs in Miami, FL

About Airvoyant

We are building the next generation of data-driven aviation software to revolutionize aircraft maintenance, operations, and fleet management. Our customers include airlines, MROs, and aviation vendors seeking more efficient, intelligent, and cost-effective ways to manage complex operations.

We are seeking an experienced Full Stack Developer to design, build, and deliver scalable, high-performance software solutions that power mission-critical aviation workflows. This role will play a key part in developing modern web and cloud-based applications used by both internal teams and global clients.

You will collaborate closely with product, engineering, and business stakeholders to transform requirements into robust, user-friendly applications that drive operational efficiency and innovation.

Responsibilities

• Design, develop, and maintain scalable full-stack applications supporting aviation maintenance and operational workflows
• Build modern, responsive front-end interfaces using frameworks such as React, Angular, or similar technologies
• Develop secure, high-performance backend services, APIs, and integrations for enterprise systems
• Translate business and product requirements into technical designs and high-quality code
• Collaborate with product managers, designers, and engineers to deliver features end-to-end
• Design and optimize databases, data models, and queries for performance and scalability
• Develop and maintain RESTful APIs and microservices architectures
• Ensure application reliability, performance, and security in production environments
• Troubleshoot, debug, and upgrade existing systems to improve performance and usability
• Build reusable components, services, and frameworks to accelerate development across teams
• Implement CI/CD pipelines and support automated testing and deployment processes
• Document system architecture, design decisions, and development processes

Required Skills and Qualifications

• Bachelor’s degree in computer science, Engineering, Information Systems, or a related field (or equivalent experience)
• 5–7+ years of experience in full stack development delivering production-grade applications
• Strong proficiency in JavaScript/TypeScript, including modern frontend frameworks (React, Angular, or Vue)
• Experience with backend technologies such as Node.js, Java, .NET, or Python
• Expert-level SQL skills and experience with relational databases (PostgreSQL, MySQL, or similar)
• Experience designing and consuming RESTful APIs and working with distributed systems
• Strong understanding of software architecture patterns (microservices, event-driven systems, etc.)
• Hands-on experience with containerization and environments (Docker, Kubernetes, or similar)
• Experience building and maintaining scalable, cloud-based applications, with direct experience on AWS (e.g., EC2, S3, Lambda, RDS) strongly preferred
• Proficiency with version control systems (Git) and modern development workflows
• Strong problem-solving skills and ability to work in a fast-paced environment
• Excellent communication skills and ability to collaborate cross-functionally

Preferred Skills and Qualifications

• Experience in aviation, MRO, ERP, or enterprise operations systems
• Experience with cloud platforms such as AWS, Azure, or GCP
• Familiarity with real-time data processing, streaming, or IoT systems
• Experience building mobile-friendly or offline-capable applications
• Knowledge of CI/CD pipelines and DevOps practices
• Exposure to data analytics, reporting, or visualization tools
• Understanding of compliance-driven or regulated software environments

Job Type: Full-Time / Salaried

Job Level: Mid-Senior

Job Location: Miami preferred (or Dallas considered)

Remote: Yes

Travel: Less than 10%

TRAX USA Corp is an equal opportunity employer committed to diversity in the workplace. We evaluate qualified applicants without regard to race, color, religion, sex, disability, veteran status, and other protected characteristics. We maintain a drug-free and tobacco-free workplace and perform pre-employment background checks.