Principal Java Developer

4 days ago


Hungary Oracle Full time 2,160,000 - 4,320,000 per year
Description

Oracle Application Labs (OAL) implements, maintains, upgrades and extends the applications that Oracle needs to run the daily business with rapidly changing business requirements. OAL provides a showcase for implementing and using Oracle's products. OAL influences the direction and strategy for Oracle's products through collaborative and often pioneering involvement in business applications. Within OAL, Oracle Store Platform team supports several value streams and is built to support a Global eCommerce Platform for Oracle Customers, Franchisees, Partners and Employees. 

This is your opportunity to design and build innovative solutions for our customers from the ground up, while also enhancing and optimizing existing systems.These are exciting times and our team is growing, working on ambitious new initiatives such as AI Services, systems and software to drive next-gen Cloud AI Infrastructure platforms, improve operational efficiency and effectiveness of enterprise engineering cloud services - thereby improve customer experience and services 

Role Overview:

We are seeking a highly skilled Principal Java Developer with proven architectural expertise to lead the design and implementation of scalable, high-performance systems. This role sits at the intersection of hands-on development, solution architecture, and technical leadership, requiring deep expertise in Java, modern frameworks, cloud-native architectures, and a forward-looking mindset with a strong advantage for AI/ML-driven solutions.

As a Principal individual contributor, you will provide technical vision, shape the system architecture roadmap, and mentor engineers, while also remaining actively involved in solving complex technical challenges.

Key Responsibilities:

  • Architecture & Design
    • Define, evolve, and document system architecture aligned with business goals, scalability, and security requirements.
    • Drive adoption of modern design patterns (microservices, event-driven architectures, reactive systems).
    • Evaluate and recommend emerging technologies with emphasis on AI/ML integration.
  • Development & Technical Leadership
    • Lead the development of core services, libraries, and frameworks in Java and related technologies.
    • Provide hands-on contributions to critical projects while mentoring and reviewing work of senior engineers.
    • Design, implement and configure logging, telemetry and alarms for critical monitoring points of our infrastructure. Develop tools and scripts for automating common tasks.
    • Take ownership of internal security compliance requirements and champion the rollout across teams. 
    • Establish coding standards, best practices, and ensure technical excellence across teams.
  • Collaboration & Influence
    • Partner with product managers, stakeholders, and engineering leads to align on strategy and technical direction.
    • Act as a technical thought leader, influencing decision-making beyond your immediate team
    • Owns architecture across multiple domains, sets technical direction for large-scale programs, and is recognized as a go-to technical authority across the organization.
    • Support Program increment planning and cross-team initiatives in a scaled agile environment.
  • AI/ML Integration (Strong Advantage)
    • Collaborate with data science and AI teams to integrate intelligent features into products.
    • Architect systems that leverage AI for automation, personalization, and analytics.
    • Stay ahead of industry trends in generative AI, model serving, and cloud AI services.

Required Qualifications:

  • 10+ years of professional software development experience with strong expertise in Java, JVM, Spring ecosystem and extensive experience in building REST APIs 
  • Professional hands-on extensive expertise in developing docker containers deployable in Kubernetes is a must
  • Proven experience in architecting enterprise-scale distributed systems (cloud-native, containerized, resilient).
  • Strong understanding of databases, Oracle DB, NoSQL, storage and distributed persistence technologies.
  • Solid understanding of API design, security, performance optimization, and DevOps practices.
  • Strong knowledge of databases (SQL/NoSQL), messaging systems, caching layers.
  • Experience with cloud platforms (preferred OCI).
  • Track record of leading technical design and mentoring senior engineers.

Preferred / Strong Advantage:

  • Experience integrating or developing AI/ML solutions (e.g., model inference pipelines, recommendation systems, AI APIs).
  • Understanding of MLOps, data pipelines, vector databases, LLM integration.
  • Familiarity with modern frontend frameworks (React, Angular, or similar) for end-to-end solution awareness.
  • Exposure to DevSecOps, compliance, and observability practices at scale.
Qualifications

Career Level - IC4


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