1 to 25 of 97 Permanent Performance Optimisation Jobs in London

High Performance Computer Scientist /HPC Developer

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 per annum
most demanding computational systems. This role is focused on solving difficult engineering problems at scale, working with advanced computing infrastructure, distributed systems and performance-critical workloads. We are seeking someone with outstanding technical ability who enjoys understanding systems deeply, from hardware and operating systems through to software optimisation and large-scale computation. About the Role You will work on the design, optimisation and operation of high-performance computing environments. You will be responsible for improving computational efficiency, building reliable infrastructure and solving complex challenges involving large-scale workloads. This is a highly technical role suited ...

Mid Level C# Full Stack Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £100,000 per annum
This role offers the chance to deepen your expertise in C# and .NET within a highly technical team working on complex, performance-led systems. You will take on greater ownership while continuing to grow in a collaborative environment. The Company They are a growing, data-focused organisation with … Develop and enhance C# .NET applications across multiple systems * Work on both greenfield projects and improvements to existing platforms * Contribute to system design and performance optimisation * Collaborate with cross-functional teams to deliver technical solutions * Support and mentor more junior engineers where appropriate Your Skills & Experience * Strong commercial ...

NetSuite Technical Lead - Remote working

Hiring Organisation
Communicate Recruitment Solutions LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £80,000 per annum
NetSuite ERP environment. This role acts as the technical bridge between business requirements and system execution, ensuring scalable architecture, seamless integrations, and high system performance across NetSuite and connected platforms such as Workday and other enterprise systems. This is a permanent role and remote working will be available. … blueprints Reporting & Analytics Develop and maintain advanced Saved Searches, SuiteAnalytics workbooks, and financial reports Support data extraction, transformation, and reporting requirements across teams Troubleshooting & Optimisation Diagnose and resolve script errors, integration issues, and system performance bottlenecks Lead performance optimisation initiatives, including refactoring legacy scripts and improving ...

Machine Learning Engineer

Hiring Organisation
RedTech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
technical decisions, while also collaborating closely with a highly technical team Experience in any of the following would be beneficial: Python memory management and performance optimisation GPU optimisation and acceleration Responsibilities for Machine Learning Engineer: Deploy and integrate new machine learning models into advanced commercial software products … projects from rapid prototyping and experimentation through to production implementation Optimise machine learning models for speed, scale, runtime and memory usage Help improve the performance and scalability of existing AI systems Develop innovative new features using machine learning and AI technologies Explore new technologies and approaches to solve complex ...

Senior CRO Developer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £50,000 per annum
Senior CRO Developer Location: London, Hybrid (2-3 days per week in office) Salary: Up to £60,000 Sponsorship: Not available Digital optimisation agency specialising in analytics, SEO and experimentation is looking for a Senior CRO Developer to join their growing team. This is a key role within … range of client websites. Role overview: Build and deploy A/B and multivariate tests for multiple clients Work closely with CRO and optimisation teams on experimentation delivery Support ongoing optimisation of conversion performance across client accounts Occasionally client-facing to support technical delivery discussions Work ...

Founding Engineering - Top London Software House

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 per annum
Architect and build core technology from first principles. Own critical engineering decisions across infrastructure, backend systems and product development. Design scalable, reliable and high-performance software systems. Solve complex technical challenges with speed and precision. Build prototypes, test ideas and rapidly iterate towards production solutions. Establish engineering standards, tooling … development practices. Optimise systems for performance, reliability and scalability. Work directly with founders to shape product strategy and technical direction. Take ownership of projects from initial concept through to deployment. About You Exceptional academic background from a leading UK university. Degree in Computer Science, Mathematics, Physics, Engineering or another ...

AI Coder/Senior Full-Stack Engineer (.NET / React) — Remote, UK

Hiring Organisation
Event Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
/static side still lives on Azure, so comfort working across both clouds is a real advantage. Databases: PostgreSQL and SQL Server — schema design, performance optimisation, data-access patterns. DevOps & Automation: Infrastructure-as-code with Terraform, CI/CD pipelines, GitHub Actions, build and release automation. Containers & Runtime … with Product Managers, Engineering Managers and cross-functional teams. Communicate clearly with both technical and non-technical stakeholders. Monitor and report on key software performance and delivery metrics. Maintain high-quality technical documentation and healthy development processes. Flag issues early when they might affect delivery timelines. Why This Role ...

Head of DevOps and Platform Automation

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£10,000 - £120,000 per annum
driving DevOps maturity, CI/CD excellence, and automation strategy across multi-tenant cloud platforms, while leading geographically dispersed teams and ensuring robust operational performance, governance, and continuous improvement. Key Responsibilities of the Head of DevOps and Platform Automation: Own and evolve the DevOps, CI/CD and automation … improvement and engineering excellence Oversee end-to-end platform lifecycle management ensuring availability, resilience, security and compliance across all tooling environments Drive standardisation and optimisation of CI/CD pipelines, automation frameworks and DevOps practices across the organisation Manage BAU performance, incident escalation and service reliability for critical ...

Principal Architect

Hiring Organisation
Verisk
Location
London, United Kingdom
needs into scalable, secure, and high performing solutions. You will also take ownership of reviewing existing systems, identifying opportunities to simplify, refactor, and improve performance and reusability. \ NThis is an opportunity to have real impact across our platform and help drive architectural excellence across the organisation. \ NResponsibilities\ N\nSystem … system is innovative and cost-effective.\ NQuality Assurance: Ensure software designs and implementations follow best practices, coding standards, and appropriate testing methodologies. Guarantee high performance, security, and scalability of the architecture.\ NDocumentation & Communication: Create clear, comprehensive, and maintainable documentation for system architectures, workflows, and technical specifications. Communicate effectively with ...

Principal Architect (London)

Hiring Organisation
Verisk
Location
London, UK
Employment Type
Part-time
needs into scalable, secure, and high performing solutions. You will also take ownership of reviewing existing systems, identifying opportunities to simplify, refactor, and improve performance and reusability. \n This is an opportunity to have real impact across our platform and help drive architectural excellence across the organisation. \n Responsibilities … innovative and cost-effective. \n Quality Assurance: Ensure software designs and implementations follow best practices, coding standards, and appropriate testing methodologies. Guarantee high performance, security, and scalability of the architecture. \n Documentation & Communication: Create clear, comprehensive, and maintainable documentation for system architectures, workflows, and technical specifications. Communicate effectively with ...

Quantitative Developer

Hiring Organisation
Experis
Location
City of London, London, United Kingdom
skilled Quantitative Developers (PhD level) to join leading banking institutions in London. The role focuses on building robust quantitative models, analytics platforms, and high-performance systems to support trading, risk management, and pricing functions across asset classes. 🎯 Key Responsibilities Design, develop, and implement quantitative models for pricing, risk … complex financial models into scalable production-grade code Collaborate closely with Front Office, Trading, Risk, and Research teams Enhance and maintain low-latency, high-performance systems Perform model validation, backtesting, and optimisation Contribute to architecture design of quant libraries and analytics platforms Ensure best practices in software engineering ...

Software Project Manager

Hiring Organisation
PEN Group
Location
City of London, London, United Kingdom
pure PM role — we need someone who genuinely understands code, can earn the trust of engineers, and can hold a technical conversation about architecture, performance, and trade-offs. You will take ownership of a growing portfolio of in-house software platforms used across all businesses connected to PEN Group. … full production with real user load Cloud or serverless deployment experience (AWS, GCP, Azure, or Vercel/similar) Database schema design and query performance optimisation Familiarity with AI/ML tooling or LLM integrations in production systems SaaS, CRM, or enterprise platform experience Agile or Scrum certification (though ...

React JavaScript Developer

Hiring Organisation
Proactive Appointments
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £75,000 per annum
Gateway, Lambda, SQS, RDS, and related services) Knowledge of CI/CD pipelines, Git, and Docker Strong grasp of secure coding practices and performance optimisation Excellent problem-solving and collaboration skills in a remote-first environment React JavaScript Developer – Remote Due to the volume of applications received ...

AI Integration Engineer

Hiring Organisation
Hays Technology
Location
City of London, London, United Kingdom
Employment Type
Permanent
capabilities into business applications and operational workflows. Working within Azure cloud environments, you'll ensure solutions are secure, scalable and supported by strong monitoring, performance optimisation and operational processes. This is a hands-on engineering role suited to someone who enjoys solving complex integration challenges, taking ownership ...

AI Integration Engineer

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
capabilities into business applications and operational workflows. Working within Azure cloud environments, you'll ensure solutions are secure, scalable and supported by strong monitoring, performance optimisation and operational processes.This is a hands-on engineering role suited to someone who enjoys solving complex integration challenges, taking ownership of delivery ...

NiFi Data Engineer (SC Cleared)

Hiring Organisation
Montash
Location
London, UK
Employment Type
Full-time
Agile sprints across a full software development life cycle, building and maintaining data pipelines, developing data models and handling non-functional requirements including security, performance and metadata labelling. The successful candidate will work closely with engineers and architects to deliver robust, well-tested pipelines that support a modern Lakehouse … support pipeline design, ensuring alignment with broader architectural standards and business requirements \n Handle non-functional aspects of pipeline development including security controls, performance optimisation and metadata labelling \n Implement event sourcing, change data capture and event-driven architecture patterns within the data platform \n Develop unit ...

Lead Technical Program Manager

Hiring Organisation
J.P. Morgan
Location
London, United Kingdom
Strong stakeholder management skills, building productive relationships and driving outcomes aligned with firm objectives\ N\n Understanding of data platform trade-offs, including performance optimization, cost management, scalability, and operational excellence\ N\n Deep technical understanding of modern data platform architectures, including data lakes, data warehouses, Lakehouse architectures ...

SQL Server DBA / Data Engineer

Hiring Organisation
Noir
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £85,000 per annum
Azure, GCP, SQL Server DBA/Data Engineer) Founded in 2010, our client is a rapidly growing software company focused on delivering high-performance data solutions for enterprise clients. With a strong presence across the U.S. and Europe, they're now scaling their operations in the UK to support … their expansion, they are looking for a talented SQL/Data Engineer. In particular, they are looking to move into the field of high-performance data analytics. contribute to the ongoing development and performance optimisation of their mission-critical data platforms. Our client is looking for passionate ...

Senior Software Developer

Hiring Organisation
Spectrum IT Recruitment
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£100000 - £120000/annum
that support real-world trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ASP.NET ecosystem, developing high-performance, reliable, and maintainable … applications. Key Responsibilities Design, develop, and maintain high-performance applications in C# and .NET Lead architectural discussions and contribute to technical direction Build scalable, reliable systems to support automated trading and research Develop and optimise database solutions (SQL Server or equivalent) Improve performance, reliability, and automation across systems ...

Data Analyst

Hiring Organisation
Lynx Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £65,000 per annum
Essential: Strong experience in data analysis, profiling, and data mapping Proficiency in SQL and/or Python Solid understanding of data modelling, normalization, and performance optimisation Experience with data governance, security, and regulatory compliance Hands-on experience with ETL processes, data warehouses, and cloud platforms (e.g. AWS, Azure ...

Capital Market Specialist

Hiring Organisation
Infinity Quest
Location
London Area, United Kingdom
SMART STUDIO/Smart Schema/Recon Admin/web Connect/Control &CT tools. Solid SQL experience on Oracle Database and its performance optimization Understand complex DB objects – stored procedures, database views, triggers, and database structure. Ability to write complex SQL queries – joins, updates, scripts for analysis etc. ...

Lead Software Engineer - Platform Engineering (London)

Hiring Organisation
J.P. Morgan
Location
London, UK
Employment Type
Part-time
testing applications with Detox/Appium/WebdriverIO/Playwright \n\n \n Extensive experience in modern web development, including responsive design and performance optimization \n\n \n Hands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications \n\n ABOUT ...

Lead Software Engineer - Frontend Engineering - React Native (London)

Hiring Organisation
J.P. Morgan
Location
London, UK
Employment Type
Part-time
testing applications with Detox/Appium/WebdriverIO/Playwright \n Extensive experience in modern web development, including responsive design and performance optimization \n Hands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications \n\n #ICBCareers #ICBEngineering \n ABOUT ...

Lead Software Engineer - Frontend Engineering - React Native

Hiring Organisation
J.P. Morgan
Location
London, United Kingdom
using TypeScript\ NEnd to end testing applications with Detox/Appium/WebdriverIO/Playwright\ NExtensive experiencein modern web development, including responsive design and performance optimization\ NHands-on experience with design systems, component libraries, and implementing consistent UI/UX across large-scale applications\ N\n#ICBCareers #ICBEngineering\ NABOUT ...

Java Engineer with AI (London)

Hiring Organisation
Solirius Reply
Location
London, UK
Employment Type
Part-time
building systems that integrate machine learning models, data pipelines, and cloud-native services. \n This role is ideal for someone passionate about clean architecture, performance optimization, and applying AI technologies to real-world business challenges. \n Requirements \n Key Responsibilities \n \n Design, develop, and maintain high-performance … Build RESTful APIs and microservices using modern Java frameworks \n Collaborate with data scientists to deploy and scale machine learning solutions \n Optimise system performance, scalability, and security \n\n \n Implement CI/CD pipelines and ensure high code quality standards \n Work with cloud platforms to deploy ...