Performance Engineer

Harrington Starr

  • London
  • Permanent
  • Full-time
  • 20 days ago
We're looking for a Senior Performance Software Engineer to take ownership of optimising large-scale, high-performance systems used by demanding clients worldwide. You'll work across the full delivery lifecycle, from profiling and tuning code, to rethinking architectures ensuring software runs with maximum speed, minimal memory usage, and rock-solid scalability.This is a hands on role where you'll dive deep into complex systems, identify bottlenecks, and implement improvements that make a measurable difference for clients.What you'll be doingProfiling and optimising existing code to boost performance and reduce memory footprintDesigning and implementing performance enhancements for high-throughput, low-latency systemsWorking with Product, Engineering, and Clients to understand and meet performance targetsCreating and maintaining automated performance and load testing frameworksMentoring engineers on writing efficient, scalable, and maintainable codeContributing to architectural decisions that directly impact performance and reliabilityWhat we're looking forSenior level experience in software engineering with strong experience in Python, Java, or C#Proven track record of performance tuning in large-scale, distributed systemsExpertise in profiling tools, memory management, and debugging complex performance issuesStrong database optimisation skills (Postgres, SQL Server, or similar)Experience with containerised and cloud-native environments (Kubernetes, Docker, AWS, Azure)Familiarity with load testing tools (e.g. k6, JMeter, Gatling) and monitoring solutionsExcellent communication skills to work with both technical and non-technical stakeholdersWhat's on offerCollaborative environment where technical excellence and innovation are valuedProjects that make a visible impact on system speed, efficiency, and scalabilityThe opportunity to shape system architecture and mentor future engineering leadersFlexible Hybrid working in Central Londonup to £140,000 basic plus market leading bonus structuresTech Stack:
Python, Java, C#, Postgres, Kubernetes, Docker, AWS, Azure, k6, JMeter, GatlingIf you're passionate about pushing the boundaries of performance engineering and building software that scales effortlessly, we'd love to hear from you.Associate Vice PresidentApply for this roleFirst NameThis is a required fieldLast NameThis is a required fieldTelephone NumberThis is a required fieldEmail AddressThis is a required field A valid email address is required.CV, LinkedIn or Dropbox URLThis is a required fieldCV UploadChoose File This is a required fieldLinkedIn / Dropbox URLThis is a required field A valid LinkedIn URL is required, please ensure it begins with https://www.linkedin.com/ A valid DropBox URL is required, please ensure it begins with https://www.dropbox.com/MessageBy submitting this form you agree to our , & . This is a required fieldNot yet registered?Already have an account?Still Looking? What about...Featured JobsContact UsUK: US:Useful LinksSectorsSign up to our newsletterI confirm that I have read and agree with Harrington Starr's privacy notice, which can be accessed This is a required field A valid email address is requiredHarrington StarrSite byQuick CV DropoffFirst NameThis is a required fieldLast NameThis is a required fieldEmail AddressThis is a required field A valid email address is requiredTelephone NumberThis is a required fieldJob TitleThis is a required fieldCompanyThis is a required fieldCV Upload or URLThis is a required fieldCV UrlThis is a required fieldCV UploadChoose File This is a required field You can only upload files up to 10 MB in size You can only upload doc, docx or pdf filesI would like to be kept up to date with the latest marketing insights and job opportunities.

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