1 to 25 of 238 Performance Optimisation Jobs in London

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 ❯

Business Analyst - Financial Banking Candidates will come from highly technical background with a track record of delivering complex, low-level code systems (e.g. C++, Java), with strong knowledge of performance optimisation and latency management along with Networking (TCP, UDP, multicast) and low latency data distribution. Ideally these skills will have been gained in a Low Latency Financial/… ability to learn in the role is a must. Essential Proven track record of specifying and delivering complex, low-level code systems (e.g. C++, Java), with strong knowledge of performance optimisation, latency management, concurrency, and integration considerations. Strong knowledge of networking principles (TCP, UDP, multicast) and experience designing for resilience, throughput, and low-latency data distribution. Expertise in More ❯

systems documentation to support knowledge sharing and future scalability. About you: Proven experience in developing sophisticated, scalable web applications using Java , with a deep understanding of enterprise-level architecture, performance optimisation, and maintainable code standards. Agile team player with experience contributing to sprint planning, daily stand-ups, code reviews, and retrospectives, fostering continuous improvement. A strategic problem-solver … technical challenges and driving innovative solutions. Extensive knowledge in front-end development, utilising JSP, JavaScript/TypeScript, and frameworks like React, with a focus on designing intuitive, responsive, high-performance user interfaces. Robust knowledge of the Spring ecosystem, including Spring Boot , Spring MVC , and Spring Security , to build secure and efficient backend services. Proficient in designing, implementing, and optimising More ❯

a leading managed services provider (MSP) and technology partner, specialising in enterprise IT solutions and infrastructure. They are a partner of major vendors such as Broadcom and deliver high-performance, complex systems to large-scale clients across industries. We are seeking an AVI Architect with strong DevOps and application tuning expertise. Operating at an architect level, this role focuses … on supporting tuning activities for complex, high-volume applications and driving performance improvements for the client's most demanding systems. Key Responsibilities: Lead tuning and performance optimisation for complex applications with high function point (FP) volumes. Identify and resolve application performance bottlenecks. Support move to block initiatives, ensuring high-demand applications perform efficiently. Collaborate with the … Cyber Tuning Team to define and implement best practices. Provide architectural-level guidance on DevOps processes and tuning strategies. Document tuning activities, optimisations, and performance improvements. Essential Skills & Experience: Proven experience as a DevOps or Tuning Engineer at an architect level. Expertise in application performance tuning for complex, high-volume systems. Experience in identifying and resolving performance More ❯

Dashboard Development: Design and build interactive Tableau dashboards and reports to provide actionable insights for stakeholders. Data Engineering: Develop and maintain robust data pipelines, ensuring data integrity, scalability, and performance across multiple sources. Data Integration: Work with structured and unstructured data from various internal and external systems, applying ETL best practices. Collaboration: Partner with analysts, data scientists, and business … teams to understand requirements and deliver high-quality solutions. Performance Optimisation: Monitor and tune Tableau Server performance, ensuring efficient query execution and user experience. Governance & Security: Implement data governance standards and ensure compliance with Home Office security protocols. Essential Skills & Experience Proven experience in Tableau development (Desktop and Server) with strong visualisation and storytelling skills. Solid background … SQL and experience with relational databases (e.g., Oracle, PostgreSQL, SQL Server). Familiarity with cloud platforms (AWS, Azure, or GCP) and data warehousing solutions. Strong understanding of data modelling, performance tuning, and best practices. Excellent communication skills and ability to work in a fast-paced, collaborative environment. Reasonable Adjustments: Respect and equality are core values to us. We are More ❯

Design and build RESTful API endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external … Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive and … well-being, and continuous growth, ensuring that you have the support and resources to excel both professionally and personally. Competitive Salary: £50,000 - £65,000 per year, with potential performance-based increases. Performance Bonus: Up to 10% annual bonus. Generous Holiday Allowance: 27 days holiday plus bank holidays. Health Insurance: Private health insurance including dental care, vision, and More ❯

Design and build RESTful API endpoints using NodeJS and Express, including detailed API documentation. Database Management: Design, optimize, and maintain complex SQL data models, ensuring efficient data structures, query performance, and reliability. Full-Stack Development: Develop responsive and performant front-end applications using ReactJS, focusing on UX/UI best practices. Integration & Automation: Architect and maintain integrations with external … Proven track record of leading development teams and managing large-scale projects. Database Expertise: In-depth experience with PostgreSQL/SQL, including design of complex schemas, writing queries and performance optimisation. Security & Performance: Deep understanding of application security best practices, performance tuning, and scalable architecture. Problem-Solving: Ability to troubleshoot complex technical issues, with a proactive and … well-being, and continuous growth, ensuring that you have the support and resources to excel both professionally and personally. Competitive Salary: £50,000 - £65,000 per year, with potential performance-based increases. Performance Bonus: Up to 10% annual bonus. Generous Holiday Allowance: 27 days holiday plus bank holidays. Health Insurance: Private health insurance including dental care, vision, and More ❯

reviewed until WC 3rd November We’re partnering with a global investment bank to hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high … Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance optimisation , and system reliability . Demonstrable front-end engineering experience using JavaScript, TypeScript, Angular or React Familiarity with containerisation (Kubernetes, Docker) and modern DevOps practices . Experience in More ❯

reviewed until WC 3rd November We’re partnering with a global investment bank to hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high … Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance optimisation , and system reliability . Demonstrable front-end engineering experience using JavaScript, TypeScript, Angular or React Familiarity with containerisation (Kubernetes, Docker) and modern DevOps practices . Experience in More ❯

Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices to enhance performance and scalability. Collaborate with internal teams and vendors to deliver digital products that push boundaries. Optimise site performance - improving response times, query efficiency, and Core Web Vitals. Troubleshoot … of WordPress + Gutenberg Strong skills in PHP, JS, React, HTML, CSS Experience building custom Gutenberg blocks , APIs, and feeds Solid knowledge of Git , Agile , and JIRA Understanding of performance optimisation , caching , and Core Web Vitals Confident communicator and collaborator in distributed teams Nice to Have Experience with WordPress VIP or PugPig Exposure to AWS (S3, Lambda, EC2 More ❯

Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices to enhance performance and scalability. Collaborate with internal teams and vendors to deliver digital products that push boundaries. Optimise site performance - improving response times, query efficiency, and Core Web Vitals. Troubleshoot … of WordPress + Gutenberg Strong skills in PHP, JS, React, HTML, CSS Experience building custom Gutenberg blocks , APIs, and feeds Solid knowledge of Git , Agile , and JIRA Understanding of performance optimisation , caching , and Core Web Vitals Confident communicator and collaborator in distributed teams Nice to Have Experience with WordPress VIP or PugPig Exposure to AWS (S3, Lambda, EC2 More ❯

commercial experience developing applications using C#, .NET Core, and MVC architecture. Strong front-end skills in Angular and/or Blazor . Advanced SQL Server knowledge (expert-level queries, performance optimisation). Experience with RabbitMQ or similar messaging technologies. Exposure to Azure , Kubernetes (AKS) , and (CI/CD) DevOps pipelines. Understanding of microservices and distributed systems. Excellent problem … consistently and on time. Demonstrating ownership and initiative - taking projects from concept to completion. Contributing to architectural decisions and mentoring within the team. Helping modernise systems while improving throughput, performance, and reliability. 🤝 Why Join SEG Hybrid working, with collaboration being one of our values, we expect presence in our well-situated London Holborn office one day per week, to More ❯

AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes). Familiarity with DevOps practices and tools for continuous integration and deployment. Solid understanding of system design principles, scalability, and performance optimization. Acxiom is a customer intelligence company that provides data-driven solutions to enable the world’s best marketers to better understand their customers to create better experiences and More ❯

AWS, Azure, GCP) and containerization technologies (e.g., Docker, Kubernetes). Familiarity with DevOps practices and tools for continuous integration and deployment. Solid understanding of system design principles, scalability, and performance optimization. Acxiom is a customer intelligence company that provides data-driven solutions to enable the world’s best marketers to better understand their customers to create better experiences and More ❯

of high-performing web applications using Java, Spring Boot, and modern front-end frameworks. This is a great opportunity to work on large-scale, cloud-hosted systems that require performance, scalability, and innovation. Key Responsibilities: Front-End Development Develop responsive, interactive user interfaces using HTML5, CSS3, and JavaScript. Build modern UI components using React, Angular, or Vue.js. Back-End … APIs. Solid understanding of microservices architecture. Knowledge of frontend frameworks (React/Angular). Familiarity with CI/CD pipelines, Docker, and Kubernetes. Strong understanding of application security and performance optimisation. Experience with JUnit, Mockito , or other testing frameworks. Good communication and collaboration skills. If you are interested or would like to know more, please email jonathan.la@focusonsap.org with More ❯

What you’ll do: Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js. Write clean, scalable, and maintainable code while driving performance and reliability. Collaborate with product, design, and engineering teams to deliver user-focused, accessible features. Contribute to architectural discussions and help shape the evolution of our tech stack. Mentor … and collaboration skills in English. Proven ability to work independently while contributing effectively to team goals. Experience working successfully in hybrid or remote development environments. Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re-renders). Experience with Git, version control best practices, and CI/CD pipelines. We’ll be lucky if you More ❯

What you’ll do: Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js. Write clean, scalable, and maintainable code while driving performance and reliability. Collaborate with product, design, and engineering teams to deliver user-focused, accessible features. Contribute to architectural discussions and help shape the evolution of our tech stack. Mentor … and collaboration skills in English. Proven ability to work independently while contributing effectively to team goals. Experience working successfully in hybrid or remote development environments. Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re-renders). Experience with Git, version control best practices, and CI/CD pipelines. We’ll be lucky if you More ❯

a forward-thinking global firm that’s redefining the future of finance through technology. They are looking for a Front-End React Engineer who’s passionate about clean design, performance, and scalability, someone who thrives on combining creativity with technical precision. The Opportunity You’ll join a dynamic development team, responsible for building the tools, platforms, and applications that … Apollo Client , and GraphQL/REST APIs . Experience working in a cloud-native environment ( AWS or Azure ). Familiarity with data streaming (WebSockets, chunked responses) and front-end performance optimisation . Strong understanding of testing frameworks (unit, integration, E2E) - Playwright experience a plus. Bonus points for knowledge of Material UI or other design systems, and data visualisation More ❯

learning pipelines and systems Develop infrastructure and tooling to enable deployment, monitoring, and retraining of ML models Work across the full AI delivery lifecycle, from architecture and integration to performance optimisation Collaborate with customers and stakeholders to understand operational constraints and align on solution design Mentor junior engineers and shape internal technical standards for software quality, reliability, and More ❯

learning pipelines and systems Develop infrastructure and tooling to enable deployment, monitoring, and retraining of ML models Work across the full AI delivery lifecycle, from architecture and integration to performance optimisation Collaborate with customers and stakeholders to understand operational constraints and align on solution design Mentor junior engineers and shape internal technical standards for software quality, reliability, 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 ❯

Computer Science or equivalent experience in related fields. Experience in Python, Pandas, PySpark, and Notebooks. SQL knowledge and experience working with relational databases including schema design, access patterns, query performance optimization, etc. Experience with data pipeline technologies like AWS Glue, Airflow, Kafka, or other cloud based equivalence. Experience with ETL and data warehousing like Databricks, Snowflake, or equivalent. Container More ❯

To apply, email: THE OPPORTUNITY A new contract opportunity for an AI Engineer to join a cutting-edge AI Sports company revolutionising how data and machine learning drive athletic performance, fan engagement, and predictive analytics in the sports industry. You'll be part of a highly skilled R&D team building next-generation AI solutions for real-time insights … performance optimisation, and immersive sports analytics. THE ROLE Design, develop, and deploy AI/ML models focused on sports analytics, predictive modelling, and computer vision. Collaborate with data scientists, software engineers, and sports analysts to translate real-world data into actionable insights. Optimise AI systems for real-time environments, integrating with live data feeds and cloud infrastructure. Research More ❯