Senior Java Developer

6 days ago

Belgrade, Central Serbia Perplexity Full time €100,000 - €200,000 per year

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.

Responsibilities

  • 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

Qualifications

  • 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

Preferred Qualifications

  • Experience developing core components of search engines, trading systems, or database systems
  • Familiarity with cloud services, Kubernetes (k8s), and AWS infrastructure

Final offer amounts are determined by multiple factors, including, experience and expertise.

Equity: In addition to the base salary, equity may be part of the total compensation package.
Benefits: Comprehensive health, dental, and vision insurance for you and your dependents. Includes a 401(k) plan.

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