Senior Java Developer, Perplexity AI

• 5+ years of hands-on experience in Java development
• Deep understanding of JVM internals and performance tuning
• Knowledge of Python or other scripting languages
• Passion for writing clean, efficient, and scalable Java code
• Strong knowledge of algorithms and data structures, with the ability to apply them effectively
• Deep understanding of multithreading, including various approaches, challenges, and trade-offs
• Experience building high-load, distributed, and hardware-adjacent services
• Expertise in real-time systems development

Desirable

• Perplexity is looking for a highly skilled Senior or Expert Java Developer to join our Search Core team
• This role is critical to building next-generation search products and technologies
• You will help drive key decisions around the architecture, design, and implementation of foundational components in our technical stack
• Design and implement new core search components, including a high-load ranking service, a distributed search coordination layer, and a fast-updating master data storage system
• Build and optimize streaming and batch data processing subsystems for analytics and search index creation
• Integrate with data science solutions for search index data analysis
• Push the limits of hardware performance
• Solve challenges in JVM tuning, concurrency, and system-level performance optimization
• Optimize subsystems for reliable and consistent data replication within the core search stack