Senior C++ Developer - Search Core Belgrade; London

At Perplexity, we've experienced tremendous growth and adoption since publicly launching the world's first fully functional conversational answer engine in 2022. We've grown from answering 2.5 million questions per day at the start of 2024 to around 20 million daily queries in December 2024. We also offer Perplexity Enterprise Pro, which counts leading companies like Nvidia, the Cleveland Cavaliers, Bridgewater, and Zoom as customers. To support our rapid expansion, we've raised significant funding from some of the most respected technology investors. Our investor base includes IVP, NEA, Jeff Bezos, NVIDIA, Databricks, Bessemer Venture Partners, Elad Gil, Nat Friedman, Daniel Gross, Naval Ravikant, Tobi Lutke, and many other visionary individuals. In 2024, our employee base grew nearly 300%, and we're just getting started. Perplexity is looking for a highly skilled Senior or Expert 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 5+ years of hands-on experience in C++ development 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 Experience building high-load, distributed, and hardware-adjacent services 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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