1 to 25 of 170 Permanent Performance Optimisation Jobs in London

Head of Support Performance at Judge.me Closing the Trust Gap in E-commerce Location: Hybrid (2 days in Shoreditch office near Old Street, London) Salary: £80-90k (includes comprehensive benefits package) Our Mission: Fixing Trust in Commerce For a decade, we've been on a mission to close the Trust Gap-commerce's most expensive problem. In a … reviews Organic Growth : We've achieved 40% year-over-year growth purely through word of mouth-no paid marketing or sales teams needed The Opportunity We're seeking a performance-driven Head of Customer Support to architect and optimize a technology-first support operation that directly fuels our growth engine. This role demands a strategic technologist who will maximize … AI automation using Intercom's Fin AI while maintaining rigorous performance standards across our contractor network. You'll build systems and processes that transform support from a traditional cost center into our revenue driver in the Shopify ecosystem. What Makes This Role Special You'll join at a critical transformation moment, reporting directly to the CEO with full ownership More ❯

as: Evolve Our Snowflake Data Warehouse: Take ownership of our Snowflake platform to ensure it is a highly efficient and accessible resource for the business. Implement best practices for performance optimisation, scalability, and cost management, empowering teams to access and utilise data seamlessly. Streamline Data Pipelines: Lead the development and optimisation of data pipelines using DBT , enabling … and frameworks. Recommend and lead the adoption of innovations that enhance our data engineering capabilities, ensuring we remain competitive and forward-thinking. The requirements Essential: Expertise in Snowflake, including performance optimisation, cost management, and advanced data warehousing techniques. Experience in designing and implementing scalable data architectures that meet the needs of complex, data-driven organisations. Strong SQL skills … for this role. But, we're open-minded, so definitely include your salary goals with your application. We routinely benchmark salaries against market rates, and run quarterly performance and salary reviews. The culture At iwoca, we prioritise a culture of learning, growth, and support, and invest in the professional development of our team members. We value thought and skill More ❯

participating in proof-of-concepts, and supporting technologies and methodologies that align with our business objectives. Support the maintenance and enhancement of production standards by implementing observability, monitoring, and performance optimisation in your deliverables. About you Good foundation engineering skills with solid knowledge of version control (Git), automated testing, and continuous integration/delivery within container-based environments. … and experience with modern web frameworks. Good understanding of functional, component-based web development using ReactJS, NextJS, and styled components. Growing expertise in key areas such as CSS architecture, performance optimisation, or accessibility. Strong web design skills and proficiency in building mobile-first, responsive web apps using elegant CSS. An appreciation of Core Web Vitals and optimising for More ❯

React, JavaScript/TypeScript, HTML5, and CSS3 for building responsive and interactive user interfaces. Java Backend Expertise : Strong proficiency in Java development, including Spring Framework, Spring Boot, and JVM optimisation techniques for high-performance applications. Database Management : Proficiency with both relational databases (Oracle, PostgreSQL) and NoSQL solutions, with strong SQL skills and data modelling capabilities. API Development : Strong … capabilities in designing and implementing RESTful APIs with a focus on security, performance, and usability. Master Data Concepts : Understanding of master data management principles, data governance, and reference data modelling best practices. UI/UX Design : Knowledge of user experience design principles and ability to create intuitive interfaces for complex data management tasks. Performance Engineering : Ability to design … implement, and optimise high-performance web applications and data services. Problem-Solving Skills : Exceptional analytical and troubleshooting abilities, particularly for complex data and application issues. DevOps Practices : Understanding of CI/CD pipelines, including containerisation and orchestration. Communication Skills : Excellent verbal and written communication with the ability to translate complex technical concepts to both technical and non-technical stakeholders. More ❯

solutions, and migration strategies to support Paymentology's business objectives. This role involves assessing existing IT infrastructure, identifying opportunities for cloud adoption, and recommending migration strategies based on cost, performance, and security considerations. The Cloud Architect defines cloud architecture principles, standards, and best practices, ensuring compliance with industry standards and regulatory requirements. This role designs scalable, resilient, and highly … available cloud infrastructure solutions using Infrastructure as Code (IaC) tools and automation techniques. Additionally, the role includes implementing cloud security measures, optimising resource utilisation and performance, and supporting the implementation of cloud-based solutions across AWS, Azure, and OCI platforms. What you get to do: Cloud Design and Development: Lead the design and development of Google Cloud Platform (GCP … GKE (Google Kubernetes) Design and optimise GCP Implement Identity and Access Management (IAM) and Security Policies Work with Google Anthos, Kubernetes, and container-based architectures Optimise GCP cost and performance , ensuring efficiency across environments (Optional) Provide expertise in AWS, Azure, and OCI when needed Kafka and Kubernetes Platform Management: Design, deploy, and maintain scalable Kafka and Kubernetes clusters to More ❯

You'll play a vital role in making our ambitious AI solutions a practical reality. If you thrive on system-level analysis, find joy in squeezing every ounce of performance from hardware, and love diving deep into algorithm optimisation, this is the position for you. Responsibilities Scaling Expertise: Design and implement strategies to efficiently scale machine learning models … across diverse hardware platforms (GPU/TPU). Performance Optimisation: Analyse and profile ML systems under heavy load, pinpointing bottlenecks, and implementing targeted optimisations. Distributed Systems Architecture: Create robust distributed training and inference solutions for maximum computational efficiency. Algorithmic Optimisation: Research and understand the latest deep learning literature to implement and optimise state-of-the-art algorithms … and architectures, ensuring compute efficiency and performance. Low-Level Mastery: Write high-quality Python, C/C++, XLA, Pallas, Triton, and/or CUDA code to achieve performance breakthroughs. Required Skills Understanding of Linux systems, performance analysis tools, and hardware optimisation techniques Experience with distributed training frameworks (Ray, Dask, PyTorch Lightning, etc.) Expertise with Python and/ More ❯

coding, testing, and deployment. Participate in code reviews, architecture discussions, and system design decisions. Troubleshoot and resolve complex technical issues across the full stack. Ensure software security, scalability, and performance are maintained at all times. Keep abreast of emerging technologies and industry trends to inform strategic decisions. Skills and Experience Minimum 8 years of commercial software development experience, with … solutions. Desirable Experience with containerisation and orchestration tools such as Docker and Kubernetes. Familiarity with event-driven architecture and message brokers (e.g., Kafka, RabbitMQ). Knowledge of front-end performance optimisation and accessibility standards. Exposure to machine learning pipelines or data engineering workflows. Prior experience working in startup environments or high-growth technology companies. Benefits Hybrid working as More ❯

tools, platforms, and processes that improve the overall developer experience. Your work will involve close collaboration with developers, DevOps engineers, and other stakeholders to ensure seamless integration and optimal performance of development workflows. WHAT YOU'LL BE DOING: Developer Experience Enhancements: Work on projects to improve developer productivity using tools such as Backstage to create internal developer portals and … productivity and system efficiency. Infrastructure Automation & Management: Use Terraform/OpenTofu and automation frameworks to provision and manage infrastructure. Monitoring & Observability: Configure and utilise observability tools like Datadog for performance monitoring, alerting, and visualisation, ensuring system reliability and quick identification of issues. Performance Optimisation: Continuously monitor the performance of the tools and services and implement optimisations More ❯

elite DevOps and technical teams. Responsibilities Lead the charge in architecting, deploying, and operating next-generation platform services encompassing advanced Kubernetes environments, intelligent server provisioning, and game-changing High-Performance Computing systems. Master the art of infrastructure construction through cutting-edge code-driven methodologies utilising industry-leading Terraform, Ansible, and Helm technologies. Engineer bulletproof platform frameworks that enable lightning … fast containerised workloads, distributed systems, and performance-critical trading applications that process millions of transactions. Drive innovation through standardised automation, seamless resource provisioning, and intelligent configuration oversight across multiple high-stakes operational environments. Champion collaboration with elite DevOps, development, and quantitative research teams to unlock platform capabilities and deliver game-changing project outcomes. Bridge worlds by connecting on-site … infrastructure with hybrid and public cloud platforms (Azure, AWS) to supercharge computational capacity and resource federation. Own performance excellence through advanced platform optimisation, real-time monitoring, and rapid incident resolution to maintain mission-critical system availability. Orchestrate seamless operations by coordinating infrastructure updates, security hardening, data protection, and rock-solid business continuity procedures for essential platform components. Champion More ❯

elite DevOps and technical teams. Responsibilities Lead the charge in architecting, deploying, and operating next-generation platform services encompassing advanced Kubernetes environments, intelligent server provisioning, and game-changing High-Performance Computing systems. Master the art of infrastructure construction through cutting-edge code-driven methodologies utilising industry-leading Terraform, Ansible, and Helm technologies. Engineer bulletproof platform frameworks that enable lightning … fast containerised workloads, distributed systems, and performance-critical trading applications that process millions of transactions. Drive innovation through standardised automation, seamless resource provisioning, and intelligent configuration oversight across multiple high-stakes operational environments. Champion collaboration with elite DevOps, development, and quantitative research teams to unlock platform capabilities and deliver game-changing project outcomes. Bridge worlds by connecting on-site … infrastructure with hybrid and public cloud platforms (Azure, AWS) to supercharge computational capacity and resource federation. Own performance excellence through advanced platform optimisation, real-time monitoring, and rapid incident resolution to maintain mission-critical system availability. Orchestrate seamless operations by coordinating infrastructure updates, security hardening, data protection, and rock-solid business continuity procedures for essential platform components. Champion More ❯

elite DevOps and technical teams. ⚡ Responsibilities Lead the charge in architecting, deploying, and operating next-generation platform services encompassing advanced Kubernetes environments, intelligent server provisioning, and game-changing High-Performance Computing systems. Master the art of infrastructure construction through cutting-edge code-driven methodologies utilising industry-leading Terraform, Ansible, and Helm technologies. Engineer bulletproof platform frameworks that enable lightning … fast containerised workloads, distributed systems, and performance-critical trading applications that process millions of transactions. Drive innovation through standardised automation, seamless resource provisioning, and intelligent configuration oversight across multiple high-stakes operational environments. Champion collaboration with elite DevOps, development, and quantitative research teams to unlock platform capabilities and deliver game-changing project outcomes. Bridge worlds by connecting on-site … infrastructure with hybrid and public cloud platforms (Azure, AWS) to supercharge computational capacity and resource federation. Own performance excellence through advanced platform optimisation, real-time monitoring, and rapid incident resolution to maintain mission-critical system availability. Orchestrate seamless operations by coordinating infrastructure updates, security hardening, data protection, and rock-solid business continuity procedures for essential platform components. Champion More ❯

coding in Java (latest versions) and guide teams on best practices. Drive adoption of modern architecture principles likeMicroservices,Event-Driven Architecture,CQRS, andSAGA patterns. Define and enforce coding standards, performance tuning, and best practices. Select appropriate AWS services and design cloud-native architectures with cost, scalability, and security in mind. Conduct design and code reviews to ensure quality and … Associate/Professional) is a plus. Experience with Infrastructure as Code (IaC) using Terraform or AWS CDK. Exposure to data streaming platforms like Kafka is a bonus. Background in performance optimisation, scalability, and security best practices Qualification: Must be educated to at least degree level or equivalent. More ❯

environment. • Familiarity with serverless architecture is beneficial. • Experience with messaging systems like RabbitMQ or Kafka is a plus. • Experience implementing two-factor authentication (2FA) for user logins • Experience with performance optimisation for high-traffic scenarios and a large number of concurrent users. More ❯

environment. • Familiarity with serverless architecture is beneficial. • Experience with messaging systems like RabbitMQ or Kafka is a plus. • Experience implementing two-factor authentication (2FA) for user logins.. • Experience with performance optimisation for high-traffic scenarios and a large number of concurrent users. More ❯

guiding the evolution of our platform's microservices ecosystem. What You'll Do Architect, build, and maintain scalable Python microservices deployed in cloud environments Lead architectural decisions focusing on performance, observability, fault tolerance, and scalability Own complex backend features end-to-end design, implement, test, deploy, and monitor Mentor and guide engineers through code reviews, design discussions, and best … of microservices architecture, APIs, service discovery, and messaging patterns Experience with cloud platforms (AWS, GCP, Azure) and containerisation (Docker; Kubernetes a plus) Strong software engineering fundamentals: clean code, testing, performance optimisation, OOP, algorithms Familiar with SQL and NoSQL databases (PostgreSQL, MongoDB) and CI/CD pipelines Comfortable in fast-changing environments with a strong sense of ownership and More ❯

engineering leadership. What the Engineering Manager will be doing Leading, coaching and developing a squad of engineers working on a core Rules Engine product. Driving team delivery, ensuring high performance, scalability, and maintainability of software systems while guiding systems design decisions. Supporting and mentoring engineers in their career growth, goal setting, and performance. Partnering closely with product management to …/CD, Agile product delivery Bonus Points For Experience leading cloud-based SaaS product teams. Exposure to highly regulated or data-sensitive industries (e.g. finance, insurance). Familiarity with performance optimisation and cost control in AWS environments. Understanding of underwriting or insurance systems. This is an amazing opportunity to lead a talented team in an ambitious tech company More ❯

end engineers to integrate APIs effectively, influence API design, and ensure reliable data flow, error handling, and system resilience. Maintain and enhance production standards by embedding observability, monitoring, and performance optimization in all deliverables. Promote a DevOps culture where engineers own and operate their solutions. Partner closely with product managers and designers, providing technical insights during ideation, product discovery … using frameworks such as ReactJS and NextJS. Strong understanding of component-based web development and proficiency with styled components. Specialised expertise in at least one key area: CSS architecture, performance optimisation, or accessibility. Strong capability in web design and implementation of mobile-first, responsive applications using elegant and maintainable CSS. Thorough understanding of Core Web Vitals with proven … ability to optimise for performance, interactivity, accessibility, and visual stability. Demonstrated ability to balance technical trade-offs effectively and deliver exceptional user experiences with a sharp eye for design detail. Experience mentoring and guiding peers while maintaining a hands-on role in technical delivery. Ability to work independently with minimal oversight, thriving in a startup environment that values adaptability More ❯

frontend that supports complex ML workflows-from 3D visualizations to seamless API integrations Optimise User Experience: Ensure our interface is visually appealing and high-performing using advanced caching strategies, performance monitoring, and accessibility best practices Drive Innovation: Leverage modern tools and architectures to integrate cutting-edge features such as server-side rendering (SSR) and AI-driven enhancements Collaborate & Own … colleagues, and continuously learn from one another What you bring to the table Core Web Technologies: HTML, CSS, JavaScript Frameworks & Libraries: React, TypeScript, and state management (Recoil, Redux, MobX) Performance Optimisation: Code splitting, lazy loading, and React performance tools APIs & Data Handling: REST, Long Polling, WebSocket, GraphQL, caching strategies, and data-heavy API interactions UX & UI: Responsive More ❯

integration of external data sources, developing data models and ETL processes; to driving value through dashboards or business applications. Integrating AI tools and LLMs to unlock valuable insights, optimise performance, and automate business processes will also be a part of this role. Responsibilities Customer Engagement and Enablement: Act as a trusted advisor for named customer accounts, ensuring they fully … support related to data ingestion, transformation, and visualisation Develop and optimise data models, ETL processes, Workflows and dashboards within the platform Provide best practices for analytics pipelines, integration strategies, performance optimisation and data governance and AI readiness Leverage AI capabilities within the platform and integrate external AI tools and LLMs to enhance data insights, automation, and predictive analytics More ❯

integration of external data sources, developing data models and ETL processes; to driving value through dashboards or business applications. Integrating AI tools and LLMs to unlock valuable insights, optimise performance, and automate business processes will also be a part of this role. Responsibilities Customer Engagement and Enablement: Act as a trusted advisor for named customer accounts, ensuring they fully … support related to data ingestion, transformation, and visualisation Develop and optimise data models, ETL processes, Workflows and dashboards within the platform Provide best practices for analytics pipelines, integration strategies, performance optimisation and data governance and AI readiness Leverage AI capabilities within the platform and integrate external AI tools and LLMs to enhance data insights, automation, and predictive analytics More ❯

integration of external data sources, developing data models and ETL processes; to driving value through dashboards or business applications. Integrating AI tools and LLMs to unlock valuable insights, optimise performance, and automate business processes will also be a part of this role. Responsibilities Customer Engagement and Enablement: Act as a trusted advisor for named customer accounts, ensuring they fully … support related to data ingestion, transformation, and visualisation Develop and optimise data models, ETL processes, Workflows and dashboards within the platform Provide best practices for analytics pipelines, integration strategies, performance optimisation and data governance and AI readiness Leverage AI capabilities within the platform and integrate external AI tools and LLMs to enhance data insights, automation, and predictive analytics More ❯

novel product features. Our products are released for use by both customers within their products and directly to the public within our own encoding workflows and players Profile and optimisation (CPU, memory bandwidth, SIMD/vectorization, threading; GPU/accelerator paths where applicable) to meet compression-ratio, latency and throughput targets. Extend and maintain existing C/C++ (C++17 … or later) codebases; refactor for reliability, portability and readability. Build automated unit, functional, and performance test suites and as a team own test and benchmarking harnesses.Collaborate in an agile environment (code reviews, design discussions, task estimating knowledge sharing and mentoring expected). Manage your deliverables we expect people to take responsibility for their deliveries but not to work in … API documents and integration guides. Qualifications: Must haves: Strong modern C++ (C++17 or later preferred) and solid C fundamentals; confident with low-level memory management, resource lifetime, templates and performance-oriented coding. Several years building and shipping production native code (typically 5+; depth matters more than exact years). Performance analysis & optimization experience using profilers/instrumentation tools More ❯

novel product features. Our products are released for use by both customers within their products and directly to the public within our own encoding workflows and players Profile and optimisation (CPU, memory bandwidth, SIMD/vectorization, threading; GPU/accelerator paths where applicable) to meet compression-ratio, latency and throughput targets. Extend and maintain existing C/C++ (C++17 … or later) codebases; refactor for reliability, portability and readability. Build automated unit, functional, and performance test suites and as a team own test and benchmarking harnesses.Collaborate in an agile environment (code reviews, design discussions, task estimating knowledge sharing and mentoring expected). Manage your deliverables we expect people to take responsibility for their deliveries but not to work in … API documents and integration guides. Qualifications: Must haves: Strong modern C++ (C++17 or later preferred) and solid C fundamentals; confident with low-level memory management, resource lifetime, templates and performance-oriented coding. Several years building and shipping production native code (typically 5+; depth matters more than exact years). Performance analysis & optimization experience using profilers/instrumentation tools 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 ❯

apps with React.js and ideally React Native Deep understanding of JavaScript , HTML5 , and CSS3 Experience using Git/GitHub in a team environment Good grasp of cross-browser compatibility, performance optimisation, and responsive design Comfortable pairing with designers and developers in a collaborative team Excellent communication skills and fluency in English Interested? Hit the apply button and let More ❯