Search Senior Backend/Infrastructure Engineer (London, Belgrade, Berlin)

Perplexity is looking for a Senior Infrastructure Engineer to join our small team revolutionizing the way people search and interact with the internet. Your passion and diligence will be critical to ensure a high quality product. This role blends infrastructure expertise with software engineering -- you'll own core systems that power our products and development workflows.

Responsibilities

• Build and maintain robust, scalable infrastructure to support high-performance search systems

• Develop internal tools and automation to streamline developer workflows and operational efficiency

• Design, deploy, and operate cloud-native systems, primarily on AWS

• Improve and support CI/CD pipelines, testing infrastructure, and release processes

• Debug and optimize Linux systems, containers, and backend services

• Contribute directly to product codebases, working across Python, Go, and other systems languages

Requirements

• Strong background in cloud infrastructure (AWS preferred), systems design, and automation

• Deep understanding of Linux internals, performance tuning, and debugging

• Experience building or maintaining CI/CD systems and tooling

• Strong Python skills and fluency in at least one systems language (Go, Rust, C/C++, or Java)

• Comfort working across both infrastructure and application-level code

• A proactive learner who thrives in a fast-paced, innovative environment