1 to 25 of 28 Performance Optimisation Jobs in the City of London

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 ...

turn cutting-edge ideas into real-world products. What You’ll Do Lead the design, development, and maintenance of scalable, secure, and high-performance backend services and APIs. Collaborate across the engineering team — including frontend, product, and QA — to architect solutions that address business needs and technical challenges. Drive … full development lifecycle: requirements, design, implementation, testing, deployment, and support. Improve and optimise existing systems for performance, reliability, and maintainability. Conduct code reviews, provide technical leadership, and mentor junior engineers to uphold best practices. Identify and address security, performance, and scaling bottlenecks. What We’re Looking For 5+ ...

agile team of 5-7 mobile engineers (React Native) across a mix of seniority levels. Own people management responsibilities including hiring, onboarding, line management, performance management, coaching, mentoring, and career development. Foster a collaborative, inclusive, and high-performance team culture focused on continuous improvement and psychological safety. Technical … mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands-on software engineering background across modern mobile technologies e.g. cross platform/native development. Strong understanding of modern ...

Technical Leadership Lead the design and implementation of key features and components of our React Native mobile application. Make informed technical decisions that improve performance, reliability, and scalability. Participate in architectural discussions and help shape the technical direction of mobile applications. Provide support and unblock engineers during development, testing … standards are upheld. Help foster a healthy engineering culture based on learning, knowledge sharing, and accountability. Engineering Quality Champion strong testing, code quality, and performance practices. Knowledge of best practices in security, performance and accessibility Identify areas for improvement within the codebase and contribute to long-term maintenance ...

Knowledge of Power Platform governance and Center of Excellence practices Experience with PCF controls and modern web technologies (TypeScript, React) Understanding of Power Platform performance optimisation and profiling Experience with Azure integration services such as Service Bus, Event Grid, or API Management Personal Attributes Strong communicator with ...

with the modern data stack, including dbt, Airflow (or similar) and Python Solid experience with AWS and/or Azure Strong SQL skills and performance optimisation experience Familiarity with CI/CD, DevOps and DataOps practices Confident communicator, comfortable engaging with senior technical and non-technical stakeholders Nice ...

used by Sales and Trading Partner closely with FX Traders, Sales, and Quant/Tech teams to define requirements and deliver solutions Deliver high-performance, responsive UIs suitable for latency-sensitive trading environments Collaborate with global development teams across London and Asia Contribute proactively to product evolution and platform … within financial markets FX trading systems experience highly advantageous Experience with testing frameworks (Jest, Cypress, etc.) and CI/CD pipelines Strong focus on performance optimisation and UI responsiveness Confident working directly with front-office stakeholders Bachelor's degree in Computer Science, Engineering, or related discipline Desirable Backend ...

founders, designers, and backend engineers. Own the mobile platform strategy and technical decisions for our migration to native. An innovator : Push boundaries with native performance optimisation, offline-first architecture, background audio processing, and mobile ML integration for thousands of financial advisors. We're looking for: In addition ...

Angular) Familiarity with design tokens and design-to-code workflows Experience with tools like Framer or Principle Knowledge of Git/version control Web performance optimisation experience Familiarity with analytics tools (GA, Hotjar, etc.) Basic understanding of APIs and back-end concepts 💙 What’s on offer Competitive salary ...

Strong proficiency across Python/TypeScript/Golang (or equivalent polyglot stacks) with proven ownership of production-grade systems. Expertise in real-time systems, performance optimisation, fault tolerance and scalable architectures under uncertainty. Experience with financial protocols, market data feeds, order matching or compute infrastructure is a strong ...

Drive AI/ML adoption using AI Builder, Azure Cognitive Services, and customer intelligence features Support governance, DevOps, CI/CD, environment strategy, and performance optimization Serve as the SME for CRM strategy, integration frameworks, roadmap planning, and platform evolution Required Experience & Skills: Nice to Have: Microsoft certification ...

What You'll Be Doing Designing and evolving the core backend architecture of a complex, high-throughput platform Solving hard scaling problems across concurrency, performance, and reliability Building systems that process large volumes of unstructured data with strict latency requirements Setting technical direction and raising engineering standards across … have already "been there" technically. Core experience: Extensive backend engineering experience (typically 10+ years) Expert-level Python, with deep understanding of async patterns and performance optimisation Proven experience designing and scaling distributed systems Strong background in API design, data-intensive systems, and service architecture Track record of building ...

driven architecture , with Kafka at the core Collaborate with product, frontend and platform teams to deliver scalable e-commerce solutions Contribute to system design, performance optimisation and best engineering practices Take ownership of services from development through to production What We’re Looking For Strong commercial experience with ...

teams through complex product development challenges. Collaborate with stakeholders to gather and prioritize requirements based on business impact and feasibility. Oversee continuous testing and performance optimization to maintain high product standards. Monitor emerging technology trends and integrate innovative approaches into product development. Influence strategic decisions, manage risks, and ensure ...

accuracy, security, and compliance with organisational policies and privacy standards. Document data models, definitions, and analytics logic to support transparency and reuse. Continuously improve performance, reliability, and scalability of analytics solutions. Skills & Experience Strong experience designing and delivering analytics solutions end-to-end, including both strategy and implementation. Hands … expertise with Power BI (data modelling, DAX, visual design, performance optimisation). Experience working with Microsoft 365 data, ideally including Microsoft Graph and Viva Insights. Ability to define KPIs and analytics frameworks in ambiguous or evolving environments. Proven ability to engage stakeholders, influence decisions, and drive alignment. Strong ...

with core data engineering tools and technologies (e.g. ETL/ELT pipelines, data warehouses, orchestration tools) Strong understanding of data modelling, data quality, and performance optimisation Desirable Experience Experience with Palantir (Foundry, Gotham) Willingness and aptitude to learn Palantir technologies on the job Background working in defence, government ...

Experience Cloud. You will be highly skilled in Apex, Visualforce, Lightning Components, and Lightning Web Components. A strong understanding of Salesforce governor limits and performance optimisation principles for efficient and scalable applications for a large active user base. Expertise in large-scale integration using SOAP, REST, Streaming (including ...

development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and ensure adherence to best coding practices. - Participate in code reviews and provide constructive feedback. - Stay updated with … Science, Engineering, or a related field. - Proven experience in Java development, with a focus on low-latency systems. - Strong understanding of multithreading, concurrency, and performance optimization. - Experience with frameworks and libraries such as Spring, Hibernate, and Netty. - Familiarity with distributed systems and network protocols. - Excellent problem-solving skills ...

+ Java) to help architect and build a new FX e-trading platform from the ground up, working across the stack to deliver high-performance, resilient, and secure systems. You will partner closely with product, trading, and infrastructure teams to deliver features end-to-endfrom UI and desktop container … drive state management, data visualization, and UX for trading workflows. Optimize latency, throughput, and reliability across the stack; instrument observability (metrics, tracing, logging) and performance profiling. Establish engineering best practices: code standards, testing strategies (unit/integration/E2E), CI/CD, secure coding, and release management. Mentor engineers ...

Power BI, Azure, and Confluent technologies. You will lead platform strategy, administration, and integration to support scalable analytics and data engineering solutions. Responsibilities include performance optimization, governance, automation, and enabling secure, reliable data flows. This role requires strong leadership, cross-functional collaboration, and hands-on technical proficiency. Your role … prem environments. You will lead platform strategy and operations for technologies including Snowflake, SQL Server, Power BI, Azure, and Confluent, ensuring high availability, performance, and scalability. You will collaborate with cross-functional teams to design and implement platform solutions that support data engineering, analytics, and business intelligence initiatives. Your ...

Power, Gas, and Equity products. You will take ownership of implementing complex pricing models, designing calibration routines, integrating market data, and ensuring robust model performance in live trading environments. This position is well suited for someone who blends strong quantitative expertise with production-grade engineering skills and enjoys solving … highly desirable. This role offers the opportunity to influence mission-critical pricing infrastructure used globally, while contributing to innovation in modelling, calibration, and performance optimisation. If you're interested in exploring this opportunity, please get in touch or apply directly via the job advert. ...

Flight Management System (FMS) engineering team in London. This group builds mission-critical software used by airlines worldwide - powering real-time flight operations, route optimisation, and next-generation cockpit intelligence. You’ll work on high-performance, multi-threaded systems that directly impact global aviation efficiency, fuel optimisation … components Work on real-time data processing for flight planning, scheduling, and air traffic control integration Implement and optimise algorithms for fuel efficiency, route optimisation, and aircraft performance modelling Contribute to multi-threaded, high-performance architectures used in large-scale airline operations Collaborate with system architects, engineers ...

design system Participate in code reviews and help maintain frontend standards Work cross-functionally with other teams to deliver features Debug and optimize frontend performance Mentor junior engineers and share knowledge with the team Build new features and improve existing user journeys What We're Looking For Essential: 5+ … team Highly Desirable: Experience with our specific stack (Vite, Turbo, Tailwind, Storybook) Background in SaaS platforms or complex B2B products Understanding of web performance optimization and monitoring Familiarity with backend technologies to enable better cross-stack collaboration Our Tech Stack: Framework: React, TypeScript Build Tools: Vite, Turbo Styling: Tailwind ...

complex and scalable systems and features using C# and Unity that form the technical foundation for our games. Contribute to the development, profiling and optimisation of our code, including using Unity’s UI Toolkit and dynamic data binding. Support the development of editor tooling and workflows that enhance productivity … streamline content integration across multiple disciplines including engineers, art & design. Own and maintain areas of our C# codebase, ensuring performance, maintainability, and cross-platform compatibility across desktop, console, and mobile platforms. Collaborate with cross-functional teams – including design, engineering, QA, and production – to deliver high-quality user experiences ...

. Designing and maintaining efficient data pipelines and vector storage solutions using MongoDB Atlas Vector Search. Fine-tuning LLMs on custom datasets to enhance performance for specialized tasks related to our documentation and user support. Collaborating with our YOLO development team to explore and build innovative multi-modal solutions. … full RAG pipeline, including vector embeddings , rerankers , and data indexing in databases like MongoDB. Practical knowledge of LLM fine-tuning, prompt engineering, and performance optimization. Familiarity with MLOps principles and tools, including CI/CD with GitHub Actions . A strong interest in computer vision and an understanding ...