26 to 50 of 295 Performance Optimisation Jobs in the UK

of Power. You’ll work with data from over 8,000 assets, developing metrics to assess and improve their resilience. Your insights will support strategic planning, risk mitigation, and performance optimisation across the Power function.Your key responsibilities will include: Leading the gathering, integration, and interpretation of operational data to generate actionable insights. Providing detailed analysis to support planning … performance tracking, and risk mitigation. Developing dashboards and reporting tools to support leadership decision-making. Contributing to business cases with financial and risk-based analysis. Supporting strategic planning and performance measurement across the Power function. Collaborating with stakeholders across the business to ensure data-driven programme success. Developing solutions and metrics to assess how resilient Thames Water’s … safe, efficient, and reliable services. Competitive salary up to £48,000 per annum 26 days holiday per year, increasing to 30 with the length of service (plus bank holidays) Performance-related pay plan directly linked to company performance measures and targets Generous Pension Scheme through AON Access to lots of benefits to help you take care of you More ❯

CRO Analyst - Digital Experience & Optimisation Brighton or London (hybrid flexibility) £35,000 - £45,000 + Bonus + Unlimited Holiday + Training Budget The Opportunity A fast-growing, entrepreneurial digital business is looking for a Conversion Rate Optimisation (CRO) Analyst to join its high-performing team. Working across a broad portfolio of ambitious brands, you'll take ownership of … part of a dynamic, collaborative environment that values bold ideas, clear thinking, and real results. The Role This is a hands-on, strategic CRO role focused on delivering tangible performance improvements across digital experiences. You'll work closely with data, performance, UX, creative, and tech stakeholders to identify opportunities, build test hypotheses, and implement changes that improve conversion … research findings into wireframes, user flows, and annotated mockups using tools like Figma, InVision, or Adobe XD. Present insights and CRO roadmaps to internal stakeholders and senior leadership. Maintain performance dashboards and clearly communicate testing results, impact, and confidence intervals. Stay up to date with CRO trends, UX psychology, and testing technologies. Use front-end development skills (HTML, CSS More ❯

closely with our in-house team, you will ensure that our websites are visually appealing, user[1]friendly, and high performing. You will also be responsible for website speed optimisation, SEO best practices, and integrating marketing tools to enhance overall digital effectiveness. Design & Develop: Create and maintain high-quality, responsive websites using WordPress and Elementor. Performance Optimisation … You: Proven experience as a Website Designer, preferably within a professional services or agency environment. Expertise in WordPress & Elementor - customising themes, layouts, and functionalities. Strong understanding of website speed optimisation & Core Web Vitals. SEO knowledge - on-page optimisation, schema markup, and technical SEO. Proficiency in HTML, CSS, and JavaScript (basic to intermediate). Basic knowledge of PHP and … MySQL for WordPress customisations. Experience with Google Analytics & Search Console for performance tracking and reporting. Familiarity with marketing automation tools & CRM integrations Attention to detail - ensuring consistency in design, functionality, and performance. Ability to collaborate effectively within a team and take feedback constructively Benefits: A salary of £25,000 Working 8.30am until 5pm On site parking Duvet days Early More ❯

Security, Data Governance Experience Senior Engineering role within web and mobile application development React and NestJS API Development Designing and operating micro frontend architectures CI/CD, automated testing Performance optimisation – caching, code splitting, real-user monitoring Web and mobile security best practices Docker/Kubernetes/Helm/Terraform We are looking for a strategic thinker with More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

improvements and make key architectural decisions. Experience Extensive production experience architecting and delivering complex applications with TypeScript and Node.js . Expert level GraphQL , including advanced API design, schema evolution, performance optimisation. Strong automated testing frameworks like Vitest and Playwright . Proficiency with modern DevOps tooling and cloud-native architecture, including Docker , Helm , Kubernetes . Proven ability to lead technical More ❯

complex areas of the platform and ensure solutions are robust, secure, and scalable. Write automated and manual tests to guarantee code quality. Contribute to database and infrastructure design, including performance optimisation. Run code reviews and share knowledge with teammates. Collaborate with stakeholders to translate business needs into efficient technical solutions. Essential Skills 5+ years experience with Laravel 5+ years More ❯

part of the creative team, you’ll collaborate with artists, designers, and developers to create stunning game visuals using tools like PixiJS. Your focus will be on developing high-performance, interactive applications that deliver an immersive gaming experience. You will also work to optimise these applications for smooth gameplay across various platforms.Join a leading UK-based gaming provider who … bring game visuals and interactions to life. Collaborate with artists, designers, and other developers to ensure smooth and engaging gameplay experiences. Write clean, maintainable code with a focus on performance and efficiency. Troubleshoot, debug, and continually improve applications for optimal performance across different platforms. Key Skills and Experience: Strong proficiency in JavaScript and TypeScript. Experience with PixiJS or … other 2D rendering libraries. Experience developing graphical applications or interactive media for web browsers. Solid understanding of HTML5, CSS3, and web graphics. Familiarity with game development frameworks and performance optimisation techniques. Who We’re Looking For: A creative problem-solver with a passion for gaming and visual storytelling. A collaborative team player with excellent communication skills. Someone who More ❯

platforms now central to our customer experience, we're investing in a digital leadership role to own and evolve our websites, aligning every user interaction with the quality and performance of our products Role Overview We are seeking a Head of Web Design to lead the visual design, UX structure, and ongoing performance optimisation of our digital … branding and user experience across platforms Lead all visual implementation in HTML/CSS within a CMS environment — executing updates and mentoring others on standards and execution Analyse site performance and behaviour using tools like GA4, Hotjar, and Clarity — making data-backed design recommendations and reporting clearly to stakeholders Collaborate closely with marketing and product teams to drive engagement … retention, and lead conversion through visual and UX improvements Ensure WCAG accessibility, responsive behaviour, and mobile performance across all screen sizes Manage and QA all design output across key digital pages and product experiences Introduce creative process improvements and AI-driven tools (e.g. image generation, layout ideation, GPT-assisted editing) to streamline output and reduce repetitive tasks What We More ❯

designers, back-end developers, and product teams to deliver high-quality features Writing clean, maintainable code and collaborating through Git and version control workflows Applying best practices around accessibility, performance, and cross-browser compatibility Participating in agile development processes and regular sprint planning What youll need 2+ years of commercial experience in front-end development Solid experience with React … methodologies Strong understanding of ES6+ JavaScript Familiarity with npm, Webpack, NVM, and other build tools Experience with Redux, Redux Toolkit, or advanced state management Understanding of SEO basics and performance optimisation techniques Exposure to Node.js for front-end tooling or integrations Experience with CMS platforms like Umbraco, Episerver, or Drupal Awareness of front-end security considerations and best More ❯

testing platform , working closely with structurers and front office stakeholders. The position offers direct business interaction, exposure to real-world trading problems, and the opportunity to build robust, high-performance solutions in a dynamic environment. Responsibilities Develop and enhance Python-based models for: Historical index back-testing Daily pricing and index level generation Weighting and rebalancing logic Basket decomposition … with Flask or FastAPI for API development. Proficiency in time-series data manipulation and back-testing methods. Experience working with large datasets and real-time data pipelines . Strong performance optimisation and debugging skills. Confident communicator with the ability to liaise directly with business stakeholders. Desirable Skills Experience in commodities indices, structured products, or index engineering . Knowledge More ❯

testing platform , working closely with structurers and front office stakeholders. The position offers direct business interaction, exposure to real-world trading problems, and the opportunity to build robust, high-performance solutions in a dynamic environment. Responsibilities Develop and enhance Python-based models for: Historical index back-testing Daily pricing and index level generation Weighting and rebalancing logic Basket decomposition … with Flask or FastAPI for API development. Proficiency in time-series data manipulation and back-testing methods. Experience working with large datasets and real-time data pipelines . Strong performance optimisation and debugging skills. Confident communicator with the ability to liaise directly with business stakeholders. Desirable Skills Experience in commodities indices, structured products, or index engineering . Knowledge More ❯

and code versioning tools (e.g., GitHub) Familiarity with Shopify Plus, APIs, 3rd party integrations, and theme build tools (Vite.js, Webpack) Solid understanding of accessibility standards (WCAG), GDPR, PCI, and performance optimisation Experience in Agile environments and potentially acting as a Scrum Master is a plus Commitment to mentoring developers and maintaining clean, maintainable codebases Why join? Competitive More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

maintenance of the PowerApps platform Identify and manage problems, incidents, risks and issues Build automated tests to support our continuous deployment environments Implement APIs for purposes such as integration, performance optimisation, security and scalability Understanding yourself to be a leader (and the impact of your behaviour on others in a project team focused on results) Work alongside the More ❯

multi-disciplinary team to deliver highly user focused and successful digital services ensuring governance standards are adhered to Assist in implementing toolkits and APIs for purposes such as integration, performance optimisation, security and scalability Keeping an open mind and exploring innovative ways to solve problems, working in a fail-fast fashion to provide required functionality Embrace a continuous More ❯