26 to 50 of 162 Performance Optimisation Jobs in London

Design Architect

Hiring Organisation
KBC Technologies UK LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
smooth migration. VMware & Pure Storage Integration Design OpenShift deployments integrated with VMware virtualisation environments. Leverage VMware tools (vSphere, vCenter, NSX) to optimise cluster performance and interoperability. Configure and manage Pure Storage solutions (FlashArray, FlashBlade) to support OpenShift workloads. Ensure compatibility, performance optimisation, and operational efficiency across platforms. ...

Chief Technology Officer (CTO) - Hands-On Back-End Developer

Hiring Organisation
Morris Sinclair Recruitment
Location
REMOTE, St James's Square, Greater London, United Kingdom
Employment Type
Permanent
Salary
£80000 - £150000/annum
environmental impact . Key Responsibilities Lead technical strategy and oversee architecture for scalable, data-driven systems. Remain actively hands-on , designing and developing high-performance C#/.NET back-end systems . Mentor and guide a growing team of developers — setting technical standards and driving best practices. Oversee … solution delivery, ensuring performance, security, and maintainability. Collaborate cross-functionally with data scientists, agronomists, and stakeholders to shape product direction. Own cloud infrastructure strategy and implementation on Microsoft Azure . Lead innovation in sustainability-focused agricultural technology and analytics . Contribute to recruitment and technical assessment (including coding challenge ...

Chief Technology Officer CTO - Hands-On Back-End Developer

Hiring Organisation
MORRIS SINCLAIR RECRUITMENT LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£80,000 - £150,000 per annum
environmental impact . Key Responsibilities Lead technical strategy and oversee architecture for scalable, data-driven systems. Remain actively hands-on , designing and developing high-performance C#/.NET back-end systems . Mentor and guide a growing team of developers — setting technical standards and driving best practices. Oversee … solution delivery, ensuring performance, security, and maintainability. Collaborate cross-functionally with data scientists, agronomists, and stakeholders to shape product direction. Own cloud infrastructure strategy and implementation on Microsoft Azure . Lead innovation in sustainability-focused agricultural technology and analytics . Contribute to recruitment and technical assessment (including coding challenge ...

Machine Learning Engineer

Hiring Organisation
Lorien
Location
City, London, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
SageMaker, EKS, batch & Real Time inference. Data pipelines: Spark/SQL, orchestration (Airflow), monitoring for drift/perf. Nice to Have Cost/performance optimisation on AWS; GPU scheduling; quantisation/distillation. Experience working within Financial Services engineering standards and governance. IND_PC3 Guidant, Carbon60, Lorien ...

Machine Learning Engineer

Hiring Organisation
Lorien
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
SageMaker, EKS, batch & real-time inference. Data pipelines: Spark/SQL, orchestration (Airflow), monitoring for drift/perf. Nice to Have Cost/performance optimisation on AWS; GPU scheduling; quantisation/distillation. Experience working within Financial Services engineering standards and governance. IND_PC3 Guidant, Carbon60, Lorien ...

Mobile Engineer

Hiring Organisation
Paritas Recruitment
Location
City of London, London, United Kingdom
influencing the direction of the wider technology landscape. You will also be responsible for: Defining and governing engineering and design solutions focused on automation, performance, scalability, resilience and security Designing and engineering complex software, tools and scripts within a feature or platform team Developing architecture models and roadmaps … Strong experience building Android applications using Kotlin, Java, and Jetpack Compose Proven background in test-driven development, automated testing frameworks, mocking/stubbing and performance optimisation Experience leading and supporting engineering teams in a matrix or cross-functional structure Ability to translate complex business and product requirements into ...

Mobile Engineer

Hiring Organisation
Paritas Recruitment
Location
London Area, United Kingdom
influencing the direction of the wider technology landscape. You will also be responsible for: Defining and governing engineering and design solutions focused on automation, performance, scalability, resilience and security Designing and engineering complex software, tools and scripts within a feature or platform team Developing architecture models and roadmaps … Strong experience building Android applications using Kotlin, Java, and Jetpack Compose Proven background in test-driven development, automated testing frameworks, mocking/stubbing and performance optimisation Experience leading and supporting engineering teams in a matrix or cross-functional structure Ability to translate complex business and product requirements into ...

Senior .Net Developer

Hiring Organisation
Morris Sinclair Recruitment
Location
REMOTE, St James's Square, Greater London, United Kingdom
Employment Type
Permanent
Salary
£70000 - £100000/annum
Style Coding Challenge Designed to evaluate algorithmic problem-solving skills Focus on efficient, optimised solutions Challenges will test: Data Structures Algorithm Design Computational Thinking Performance Optimisation Ideal Candidate Profile: Academic and Professional Requirements: Minimum Qualification: Degree/Masters/PhD in Computing, Data Science, or Equivalent Proven Commercial ...

Senior .Net Developer

Hiring Organisation
MORRIS SINCLAIR RECRUITMENT LTD
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
Style Coding Challenge Designed to evaluate algorithmic problem-solving skills Focus on efficient, optimised solutions Challenges will test: Data Structures Algorithm Design Computational Thinking Performance Optimisation Ideal Candidate Profile: Academic and Professional Requirements: Minimum Qualification: Degree/Masters/PhD in Computing, Data Science, or Equivalent Proven Commercial ...

Senior ML Infrastructure Engineer Robotics

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £1,000 per day
build, and optimise the training and inference platforms at the heart of their technology. This is a hands-on engineering role focused on scale, performance, and reliability. You will work across the full machine learning lifecycle, from distributed training pipelines to highly optimised inference systems deployed into production robotics … directly impact real-world deployment. Key Responsibilities * Design, build, and maintain distributed ML training pipelines including data preprocessing, orchestration, training, and evaluation* Optimise training performance, scalability, and resource utilisation across online and offline learning workflows* Develop and optimise AI inference pipelines for deployment into real-world robotic systems* Build ...

Lead Deliverability Consultant

Hiring Organisation
APL Media Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £75,000 per annum
from all backgrounds and is committed to building an inclusive, supportive workplace. Why This Role Matters Revenue Engine: You’ll ensure the reliability and performance of the outbound email ecosystem that fuels millions in potential sales pipeline. Technical Ownership: You’ll design, monitor, and continuously improve the cold email … maintain deliverability while scaling outreach volume. Evaluate and integrate deliverability tools (Google Postmaster, GlockApps, Warmbox, Instantly, Validity/Everest and Workbooks CRM). Performance Optimisation Partner with Sales leadership to optimize sending cadence, personalisation, and engagement patterns. Run experiments to improve inbox placement and response rates across different ...

Senior Product Manager

Hiring Organisation
How Ya Doing
Location
London Area, United Kingdom
Responsibilities Strategy & Roadmap: Define and own the roadmap for Card Payments and Failed Payment Recovery, ensuring alignment with commercial priorities and regulatory compliance. Performance Optimisation: Proactively dive into payment performance data to identify friction points, uncover issuer behaviours, and design experiments to maximise authorisation rates. Intelligent Solutions ...

Senior Product Manager

Hiring Organisation
How Ya Doing
Location
City of London, London, United Kingdom
Responsibilities Strategy & Roadmap: Define and own the roadmap for Card Payments and Failed Payment Recovery, ensuring alignment with commercial priorities and regulatory compliance. Performance Optimisation: Proactively dive into payment performance data to identify friction points, uncover issuer behaviours, and design experiments to maximise authorisation rates. Intelligent Solutions ...

Full Stack Engineer

Hiring Organisation
Levy Global
Location
City of London, London, United Kingdom
requirements into scalable, maintainable code Collaborate with product managers, designers, and engineers to deliver end-to-end solutions Solve complex challenges related to scalability, performance, and reliability Contribute to engineering best practices, tooling, and processes Required Experience 3+ years of experience building full-stack applications Experience developing enterprise SaaS … ORMs (e.g., Sequelize) Strong frontend experience with React and modern UI frameworks Experience working with relational (MySQL) and NoSQL databases Strong debugging, troubleshooting, and performance optimisation skills Technical Skills Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL ...

Full Stack Engineer

Hiring Organisation
Levy Global
Location
London Area, United Kingdom
requirements into scalable, maintainable code Collaborate with product managers, designers, and engineers to deliver end-to-end solutions Solve complex challenges related to scalability, performance, and reliability Contribute to engineering best practices, tooling, and processes Required Experience 3+ years of experience building full-stack applications Experience developing enterprise SaaS … ORMs (e.g., Sequelize) Strong frontend experience with React and modern UI frameworks Experience working with relational (MySQL) and NoSQL databases Strong debugging, troubleshooting, and performance optimisation skills Technical Skills Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL ...

React Developer - Fixed Income eTrading

Hiring Organisation
Vertus Partners
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP 85,000 - 140,000 Annual
Fixed Income eTrading, including Rates, Credit, and Bonds. You'll work closely with world-class technologists and domain experts to deliver scalable, high-performance UIs that support Real Time trading and analytics. Key Responsibilities Design and develop responsive, low-latency Front End trading systems using React. Build dashboards … data and trade execution. Collaborate with traders, quants, and Back End engineers to deliver seamless UI experiences. Contribute to architectural decisions and Front End performance tuning. Required Skills & Experience Expertise in React.js and modern JavaScript (ES6+) Proven experience delivering Front End applications in electronic trading environments Strong understanding ...

Senior AI Engineer

Hiring Organisation
Circuit Medical
Location
London, UK
Employment Type
Full-time
approaches including working with agentic architecture. Key Responsibilities Backend Development & Architecture - Design and implement scalable Python backend services, architect and maintain secure, high-performance, production multi-tenant systems, and develop RESTful and asynchronous APIs for internal and external use. LLM, Agents & AI Integration - Drive R&D innovation to meet … preferably AWS) and infrastructure-as-code Ø Experience with containerisation, orchestration, and CI/CD pipelines Ø Understanding of database scaling, caching strategies, and performance optimisation Ø Familiarity with LLM technologies and latest utilisation methodologies, including agentic workflows Ø Strong understanding of software design principles and coding standards ...

Senior AI Engineer

Hiring Organisation
Circuit Medical
Location
South London, UK
Employment Type
Full-time
approaches including working with agentic architecture. Key Responsibilities Backend Development & Architecture - Design and implement scalable Python backend services, architect and maintain secure, high-performance, production multi-tenant systems, and develop RESTful and asynchronous APIs for internal and external use. LLM, Agents & AI Integration - Drive R&D innovation to meet … preferably AWS) and infrastructure-as-code Ø Experience with containerisation, orchestration, and CI/CD pipelines Ø Understanding of database scaling, caching strategies, and performance optimisation Ø Familiarity with LLM technologies and latest utilisation methodologies, including agentic workflows Ø Strong understanding of software design principles and coding standards ...

Python Developer

Hiring Organisation
Radley James
Location
London Area, United Kingdom
providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: Design, develop, and maintain highly efficient Python-based applications … commodities trading, risk management, and real-time data analysis. Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data. Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers. Optimize performance ...

Python Developer

Hiring Organisation
Radley James
Location
City of London, London, United Kingdom
providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: Design, develop, and maintain highly efficient Python-based applications … commodities trading, risk management, and real-time data analysis. Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data. Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers. Optimize performance ...

Software Developer

Hiring Organisation
SR2 - Socially Responsible Recruitment
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
GBP 400 - 425 Daily
Firestore, Realtime Database, Authentication, or Cloud Functions. Familiarity with REST APIs, serverless architectures, and cloud-based development. Solid understanding of Front End best practices, performance optimisation, and responsive design. Excellent problem-solving skills and a collaborative mindset. Nice to have: Experience with TypeScript, Redux, or other state management ...

Senior Architect - API

Hiring Organisation
Proactive Appointments
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £110,000 per annum
architectures and messaging strategies to power automation and connectivity across the enterprise. Provide technical leadership for large-scale, complex applications - from conceptual design to performance optimisation. Influence strategic decisions across cloud-native , SaaS , and on-premises environments. Collaborate with senior stakeholders, delivery teams, and other architects to ensure alignment ...

Senior Java Developer

Hiring Organisation
Eligo Recruitment Ltd
Location
London, Chaucer, United Kingdom
Employment Type
Permanent
Salary
£85000 - £95000/annum
Flow. Proficient in JPA and Hibernate for seamless database interactions. Strong command of SQL for efficient database management. Experience with Redis for caching and performance optimisation. Knowledge of message queueing systems like AWS SQS or RabbitMQ. Well-versed in Test-Driven Development (TDD) with JUnit for robust testing. Understanding ...

Engineering Manager, Machine Learning, Marketplace, Ecommerce, | 35 Million Users | UK Remote OR London, Hybrid, 1 Day PW, Up to £140,000

Hiring Organisation
Owen Thomas | Pending B Corp™
Location
Central London, UK
strategy that drives engagement, conversion, and growth. Oversee the design, training, and deployment of search and recommendation models — from data strategy to monitoring and performance optimisation. Collaborate with platform and MLOps teams to ensure robust, efficient, and scalable ML workflows (including CI/CD, feature management, and monitoring). ...

Engineering Manager, Machine Learning, Marketplace, Ecommerce, | 35 Million Users | UK Remote OR London, Hybrid, 1 Day PW, Up to £140,000

Hiring Organisation
Owen Thomas | Pending B Corp™
Location
West London, UK
strategy that drives engagement, conversion, and growth. Oversee the design, training, and deployment of search and recommendation models — from data strategy to monitoring and performance optimisation. Collaborate with platform and MLOps teams to ensure robust, efficient, and scalable ML workflows (including CI/CD, feature management, and monitoring). ...