1 to 25 of 94 Permanent Performance Optimisation Jobs in London

development lifecycle of new features, from concept through to production, ensuring a seamless user experience. Technical Excellence: Architect, design, and implement complex, high‐performance mobile applications, utilising modern iOS development frameworks and best practices. User‐Focused Solutions: Advocate for the user at every stage, ensuring our iOS app provides … culture. Data‐Driven Iteration: Collaborate with data teams to leverage analytics and user feedback to continuously improve and refine product features post‐launch. Quality & Performance: Ensure the codebase remains scalable, maintainable, and efficient through best‐in‐class engineering practices, including code reviews, CI/CD, and automated testing. ...

would be beneficial. Key Responsibilities: Lead front-end development across LibertyLondon.com (Salesforce Commerce Cloud) and the Fabrics site (WordPress), ensuring high standards of quality, performance, and maintainability. Translate design systems, wireframes, and high-fidelity designs into robust, scalable, and accessible front-end solutions. Own and influence front-end architectural … discovery and planning process. Design, build, and deploy MVT and A/B complex experiments using Dynamic Yield, collaborating with analytics and optimisation teams to improve conversion and usability. Support HTML email development, ensuring consistency, accessibility, and responsiveness across clients and devices. Champion front-end best practices, including performance ...

Team overview Our vision is to enable Sky’s growth ambitions through Data and AI: deepening customer relationships, optimising commercial performance, and enhancing operational efficiency. Principal Engineers Operate within defined domains and provide leadership to our Solution Architects. With deep technical expertise, they act as Technical Leads, shaping future … cloud‐agnostic, AI‐ready future platform. Assurance & Excellence: Embed rigorous validation, profiling, reconciliation, and automated testing into all engineering work; lead monitoring, observability, and performance optimisation to ensure resilient, reliable data products. Strategic Influence: Partner with architects, product leaders, and senior stakeholders to shape roadmaps and platform direction. ...

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 … 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. ...

data transformation pipelines. Developing and optimising SQL queries, stored procedures, and backend reporting logic. Building and maintaining semantic models, advanced DAX calculations, and performance optimisation strategies. Troubleshooting data integrity, refresh, connectivity, and performance issues across the BI stack. Establishing BI governance, security policies, version control, testing … infrastructure and BI data architecture. Person specification: Highly experienced in Power BI development with strong backend and data engineering expertise. Advanced including query optimisation, stored procedures, and performance tuning. Strong experience with ERP systems, data integrations, ETL processes, and data modelling. Proven experience managing enterprise semantic models ...

years UK based BI experience 10+ years in Power BI development with strong backend/data engineering focus. Advanced SQL Server expertise, including query optimisation, views, stored procedures, and performance tuning. Strong experience managing ERP data structures and integrations. Experience building and managing semantic models and enterprise datasets … Power BI. Strong knowledge of ETL processes, data transformation, and data modelling principles. Advanced DAX development and optimisation experience. Experience with Power BI gateways, dataflows, workspace management, and deployment pipelines. Strong understanding of BI governance, security models, version control, and documentation standards. Excellent troubleshooting and problem-solving skills. Advanced ...

responsibilities: Design, build, and maintain cloud infrastructure (primarily Azure and GCP) Develop and manage CI/CD pipelines and automation Implement monitoring, alerting, and performance optimisation Ensure security, compliance, and system reliability Troubleshoot production issues and provide operational support Collaborate with architects, developers, and stakeholders Champion DevOps culture ...

Database Developer - Data-Driven Software Company - London (Tech stack: SQL Database Developer, SQL Server 2022, PostgreSQL, C#, T-SQL, SSIS, SSRS, SSAS, Performance Tuning, Query Optimisation, Software Development, Data Engineering, SQL Database Developer) Founded in 2015, 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 growing demand for their cutting-edge data products and services. To support this expansion, they are on the lookout for a talented ...

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. This is an opportunity to have real impact across our platform and help drive architectural excellence across the organisation. Responsibilities System Design … system is innovative and cost-effective. 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. Documentation & Communication: Create clear, comprehensive, and maintainable documentation for system architectures, workflows, and technical specifications. Communicate effectively with ...

team's model library - working both individually and collaboratively. Providing leadership in areas such as object modelling & interface design, automated testing & refactoring and performance optimisation. Provide support to Trading & Origination on model usage and behaviour. Leverage the teams cross-asset expertise to connect business locations, helping to identify synergies ...

team’s model library - working both individually and collaboratively.* Providing leadership in areas such as object modelling & interface design, automated testing & refactoring and performance optimisation.* Provide support to Trading & Origination on model usage and behaviour.* Leverage the teams cross-asset expertise to connect business locations, helping to identify synergies ...

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 … 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. ...

govern security models across the data platform, including role-based access control (RBAC), dynamic masking, row-level security, and environment segregation. Drive platform performance optimisation and cost management within Snowflake, identifying inefficiencies and implementing scalable warehouse, clustering, and workload management strategies. Design data architectures that support ...

define and deliver a high-impact roadmap focused on improving conversion, reducing drop-off and increasing basket value, while laying the foundations for future optimisation across Product Listing Pages (PLPs) and the wider browsing journey. What You’ll Be Doing Own the PDP Vision & Roadmap Define the long-term … quantitative insights to identify friction points and opportunities across the customer journey Build and prioritise a roadmap focused on measurable commercial impact Drive Commercial Performance You’ll own and influence key ecommerce metrics including: PDP to Bag conversion Add-to-bag rate Average Order Value (AOV) Returns reduction through ...

define and deliver a high-impact roadmap focused on improving conversion, reducing drop-off and increasing basket value, while laying the foundations for future optimisation across Product Listing Pages (PLPs) and the wider browsing journey. What You’ll Be Doing Own the PDP Vision & Roadmap Define the long-term … quantitative insights to identify friction points and opportunities across the customer journey Build and prioritise a roadmap focused on measurable commercial impact Drive Commercial Performance You’ll own and influence key ecommerce metrics including: PDP to Bag conversion Add-to-bag rate Average Order Value (AOV) Returns reduction through ...

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 ...

architecture, develop scalable analytics solutions, and stay hands-on. Responsibilities include delivering Fabric solutions (OneLake, Lakehouse, Warehouses, Power BI), leading architecture and performance optimisation, and enabling advanced analytics and machine learning with Fabric and Azure ML. Key skills and responsibilities, Demonstrated hands-on experience with Microsoft Fabric … leadership and effective stakeholder engagement. Design and deliver comprehensive Fabric solutions, including OneLake, Lakehouse, Warehouses, and Power BI. Lead architectural design, capacity planning, and performance optimization efforts. Facilitate advanced analytics and machine learning initiatives utilising Fabric and Azure ML. Implement governance, security, and DevOps best practices. Mentor engineers ...

fluent in the full Microsoft data stack. You will be the primary developer of enterprise reporting across commercial, financial, operational, and project performance domains - working directly with business stakeholders to turn complex construction data into trusted, performant analytical outputs. You will work within a small, high-calibre Digital … through to production deployment, across all business domains. Develop complex semantic models with production-quality DAX - including advanced time intelligence, calculation groups, UDFs and performance-optimised measures at scale. Write advanced M/Python transformations, including custom functions, parameterised queries, and API connections to source systems. Manage model definitions ...

complex technical dependencies across Snowflake, dbt, Airflow, and GitHub‐based development workflows. Collaborating closely with data engineering and analytics teams to support Snowflake architecture, performance optimisation, and cost management. Overseeing dbt project delivery, testing approaches, deployment governance, and documentation standards. Defining and enforcing SDLC and CI/… delivery timelines. Facilitating technical discussions and translating complex technical concepts for non‐technical stakeholders. Driving continuous improvement in programme delivery processes, tooling, and performance metrics. Ensuring adherence to data governance, security, and regulatory compliance standards. Your Profile Essential skills/knowledge/experience: Proven experience in a Technical Program ...

calibre engineering team. You’ll write modern C++ (C++20 or later) at the heart of our Linux-based clock and time synchronisation platform - tight, performance-sensitive code where jitter is measured in nanoseconds and correctness is non-negotiable. You’ll own significant components of the platform, contribute to architecture … developer and a contractor on a tight, collaborative team. The Role Reporting to the Software Development Manager, you’ll lead the design, development, and optimisation of C++ software within our Linux-based timing systems. Day to day, you will: Design, build, and optimise low-latency, high-precision C++ ...

data platforms. Take ownership of the SDLC, delivering clean, secure, and maintainable code aligned to engineering standards. Promote engineering excellence through structured code reviews, performance optimisation, refactoring, and best practice adoption. Drive automation across build, testing, deployment, and environment management processes to improve reliability and efficiency. Provide technical ...

role is about engineering, not research. You will architect and run the infrastructure that enables AI to perform securely, reliably and at scale ensuring performance, cost control and operational maturity as adoption grows. You'll work closely with AI engineers, security teams, and product stakeholders to transform experimental models … Doing Design and optimise scalable RAG pipelines and vector search systems Orchestrate multi-model AI services with a focus on latency, resilience and performance Productionise GenAI workflows and ensure they operate reliably under real usage Build and run AI services across AWS and Databricks Develop ingestion, embedding and retrieval ...

leader within the Surveillance Technology team. Provide expert oversight across analysis, architecture, design and delivery of complex systems. Architect, build, and evolve scalable, high‐performance solutions for Communications Surveillance and Record Keeping. Lead engineering standards: architecture reviews, vendor assessments, impact analysis, and automated testing. Mentor and develop engineering talent … Record Keeping. Translate complex technical concepts for both technical and non‐technical stakeholders. Support agile planning, estimation and prioritisation. Identify opportunities for system optimisation, refactoring, and alignment to target architectures. Manage technical risks, issues and dependencies. Benchmark against peer organisations to ensure alignment with regulatory and industry expectations. Experience ...

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. ...

Staff Engineer, you will act as a technical leader within a high-performing engineering team, driving architectural decisions and ensuring the scalability, reliability, and performance of a modern, distributed platform.Key responsibilities include: Designing and evolving highly scalable, distributed backend systems Setting standards for engineering excellence, observability, and operational best … closely with Product, UX, and Engineering teams to deliver impactful features Leading on system architecture and long-term technical strategy Tackling complex challenges around performance, scalability, and data-intensive workloads Mentoring and developing engineers across the organisation What you'll need to succeed 8+ years' experience in software engineering ...