Member of Technical Staff (Search Core, Indexing & Data Pipeline Stream)
Perplexity · BE, DE
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About the Role
Perplexity is seeking an Expert Systems Engineer for the Search Core team, focusing on the indexing and data processing stream. This role is crucial for developing next-generation search products and technologies, involving key architectural and design decisions for foundational components.
Responsibilities
- Design and build core search engine components, including indexing pipelines, retrieval algorithms, and ranking systems that operate at the scale of billions of pages.
- Develop streaming and batch data processing systems for search index construction in a high-load environment.
- Push the limits of hardware performance through low-level optimizations and systems-level tuning.
- Tackle challenges in multithreading, concurrency, and system-level optimization.
Requirements
- 3+ years of hands-on experience in systems programming (Rust, C++, C, or similar).
- Ownership of the full project lifecycle, including system building, deployment, operation, and scaling.
- Knowledge of Python or other scripting languages.
- Knowledge of Data processing systems (YT/Kafka/Hadoop).
- Passion for writing clean, efficient, and scalable systems-level 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.
- Solid understanding of Linux internals (syscalls, networking stack, memory model, kernel tuning).
- Familiarity with low-level optimization techniques (memory management, cache efficiency, SIMD, profiling).
- Experience developing core components of search engines, databases, or information retrieval systems.
- Understanding of search fundamentals: indexing, query parsing, ranking, and relevance.
- Experience with trading systems or other latency-sensitive real-time systems.
- Familiarity with cloud services, Kubernetes, and AWS infrastructure.
Skills
- Systems programming (Rust, C++, C)
- Python
- Data processing systems (YT/Kafka/Hadoop)
- Algorithms
- Data structures
- Multithreading
- Distributed systems
- Linux internals
- Low-level optimization techniques
- Search engine components
- Databases
- Information retrieval systems
- Search fundamentals (indexing, query parsing, ranking, relevance)
- Trading systems
- Latency-sensitive real-time systems
- Cloud services
- Kubernetes
- AWS infrastructure
Experience Level
- 3+ years of hands-on experience
About the Company
- Perplexity is looking for a highly skilled Expert Systems Engineer to join our Search Core team. For the indexing and data processing stream. 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.