1 to 25 of 27 Performance Optimisation Jobs in the City of London

institutional-grade liquidity and technology. About the Role We are seeking a highly capable Senior Web Developer to lead the design, development, and optimisation of high-performance websites and digital experiences that support product launches, marketing campaigns, and customer acquisition. This role combines strong technical execution with performance … capture forms, webinar registration pages, and product demo request pages Ensure all product pages are optimized for search engine visibility and user engagement Website Performance & Infrastructure for Launch Ensure website infrastructure can handle significant traffic increases during product launch periods Implement performance monitoring to maintain sub-2-second ...

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 ...

/or Angular Collaborate with back-end teams to integrate with RESTful APIs Ensure applications meet accessibility and usability standards Apply best practices around performance, security and code quality Contribute to UI architecture, reusable components and design systems Work collaboratively using Git-based version control Skills & Experience Required Strong … agile, multi-disciplinary teams Desirable Experience Experience contributing to design systems or component libraries Exposure to CI/CD pipelines for front-end applications Performance optimisation and cross-browser compatibility Mentoring junior developers or providing technical guidance Why Join? Work on high-impact digital services Modern tech stack ...

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 ...

frameworks, or tools to enhance product capabilities. Experience mentoring or coaching technical teams, fostering a culture of innovation and continuous improvement. Strong understanding of performance optimisation, scalability, and system reliability in enterprise environments. Ability to contribute to technical strategy, roadmap planning, and long-term product vision. Proven experience ...

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 ...

driven product increments Solid understanding of value-based prioritization and product strategy in a data-driven context Advanced Power BI expertise, including dashboards, DAX, performance optimization, and row-level security Working knowledge of enterprise data products, semantic models, and data governance Understanding of modern data platforms and analytics ecosystems ...

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 ...

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 ...

environments. Leverage VMware tools (e.g., vSphere, vCenter, NSX) to optimize OpenShift deployments. Configure and manage Pure Storage solutions (e.g., FlashArray, FlashBlade) to provide high-performance, scalable storage for OpenShift workloads. Ensure compatibility and performance optimization between OpenShift, VMware, and Pure Storage. CI/CD Pipelines and DevOps Workflows ...

+ 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, 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 ...

rigorous scientific research, and deep expertise across trading, technology, and operations. As a tech-driven organization, we develop our own advanced systems, including high-performance trading platforms and large-scale data analysis infrastructure. With a global presence, we emphasize collaboration across investment, technology, and operations teams, ensuring seamless integration … across our offices worldwide. Within this Reliability team, youll play a vital role in maintaining the performance, stability, and availability of our software systems. You'll be working closely with mission-critical applications, developing reliability features, improving observability, and building automation tools to streamline operations. About the Role - 5+ ...