Senior C++ Developer – Search Core – London

Perplexity is looking for a highly skilled Senior C++ 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

• Develop new types of search index storage, including streaming and batch data processing systems in a high-load environment capable of handling billions of pages
• Build new core search components, including algorithms for efficient retrieval and ranking
• Push the limits of hardware performance
• Tackle challenges in multithreading, concurrency, and system-level optimization
• Optimize subsystems for reliable and consistent data replication within the core search stack

Qualifications

• 10 years of experience developing backend systems using C++
• 6 years of experience designing and implementing scalable, high-performance systems in large-scale production environments
• Knowledge of Python or other scripting languages
• Passion for writing clean, efficient, and scalable C++ code
• Strong knowledge of algorithms and data structures, and the ability to apply them effectively
• Deep understanding of multithreading, including various approaches, challenges, and trade-offs
• Deep expertise in 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

Our cash compensation range for this role is $160,000 - $250,000.