Senior/Staff Software Engineer - Infrastructure

Perplexity AI1 months ago

Location

London

Type

Full Time

Salary

GBP 120,000 – 220,000

Level

Senior

Role

Infrastructure Engineer

Posted

Feb 10, 2026

Full TimeSenior

The role

Summary

Perplexity AI is seeking a Senior/Staff Software Engineer to join their Infrastructure team in London, focusing on designing and scaling critical systems that enable product innovation, reliability, and performance across web, mobile, and browser platforms. The ideal candidate will play a pivotal role in building robust infrastructure that supports Perplexity's AI-powered answer engine and enables rapid technological advancement.

What you'll do

Infrastructure Architecture: Design and implement scalable cloud infrastructure supporting Perplexity's AI-powered platform

System Reliability: Ensure high availability, performance, and security of critical infrastructure components

DevX Enablement: Build tools and platforms that enhance developer productivity and innovation speed

Performance Optimization: Continuously improve system efficiency, reduce latency, and optimize resource utilization

Cross-Team Collaboration: Work closely with product, AI research, and engineering teams to support technological initiatives

What we look for

Technical

Infrastructure DesignAbility to architect scalable and reliable cloud systems

System PerformanceExpertise in optimizing computational resources and reducing latency

Cloud ServicesProficiency with AWS services and cloud infrastructure management

Education

Computer ScienceBachelor's or Master's degree in Computer Science, Software Engineering, or related technical field

Advanced CertificationsCloud certifications (AWS, GCP) are a plus

Experience

Infrastructure Engineering5+ years of experience in designing and scaling infrastructure platforms

Enterprise SystemsProven track record of building high-performance, reliable systems

Skills

Required skills

Cloud InfrastructureExpertise in designing and scaling cloud systems

Distributed SystemsExperience with high-throughput, low-latency architectures

Performance OptimizationAbility to design and implement efficient system architectures

Nice to have

DevOpsExperience with CI/CD and infrastructure automation

AI InfrastructureUnderstanding of infrastructure requirements for AI platforms

MicroservicesExperience designing scalable service architectures

Compensation & benefits

Salary

GBP 120,000 – 220,000 (annual)

Stock options

Available

Benefits

Hybrid Work

Flexible work arrangement with options for remote and in-office work

Cutting-Edge Technology

Work on innovative AI-powered search and answer engine

Professional Growth

Opportunity to work with advanced technologies and high-impact infrastructure

Competitive Compensation

Competitive salary package for senior engineering talent

Interview process

1
Initial Screening — HR review of application and resume
2
Technical Phone Screen — Discussion of background, experience, and initial technical assessment
3
Technical Interview — In-depth technical evaluation of infrastructure and systems design skills
4
Systems Design Challenge — Architectural design problem solving and presentation
5
Final Interview — Meeting with team leads and potential future colleagues