Infrastructure Engineer (Search)

Location: Belgrade, Serbia; Berlin, Germany; London, United Kingdom

Company

Perplexity develops a latency-sensitive search stack powered by scalable backend and retrieval systems.

What you will do

• Build and operate scalable, low-latency infrastructure for search serving and retrieval.
• Design and improve distributed backend systems handling high request volumes.
• Debug and optimize Linux systems, containers, networking, and production services.
• Improve reliability through observability, capacity planning, performance profiling, and incident response.
• Design, deploy, and operate cloud-native systems using AWS and Kubernetes.
• Build internal automation, improve CI/CD and release safety, and contribute to Rust and Go product codebases.

Requirements

• Strong experience with cloud infrastructure, distributed systems, and automation.
• Deep understanding of Linux internals, performance analysis, and production debugging.
• Experience with latency-sensitive, high-throughput backend systems, containers, orchestration, observability, and infrastructure as code.
• Experience building or maintaining CI/CD systems and release tooling.
• Fluency in at least one systems language, such as Rust, Go, C++, or Java.
• Ability to work across infrastructure and application-level code with strong end-to-end ownership.

Nice to have

• Experience with search, retrieval, ranking, or large-scale data-serving systems.
• Production experience operating Rust services.
• Experience with AWS, Kubernetes, modern observability systems, profiling, capacity planning, or performance optimization.
• Experience building AI-assisted developer or operational tooling.

Culture & Benefits

• Work spans infrastructure and application-level engineering.
• Ownership covers architecture, implementation, deployment, and production operation.
• AI-native tools are used where they improve engineering and operational workflows.