23 of 23 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 ...

looking for a C++ Trading Platform Developer to join its London-based team. This is an opportunity to work at the intersection of high-performance engineering and digital asset markets, building and scaling a global trading platform that operates across dozens of exchanges worldwide. The environment combines the technical … platform spanning multiple continents, covering: Real-time market data capture Order entry and connectivity across numerous exchanges Robust networking and monitoring systems Scaling and performance optimisation of core infrastructure The tech stack is primarily C++ and Python, running on Linux across both development and production. The focus ...

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. We’re looking for a high achiever that will be seen … 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 ...

trading. Following the recent acquisition of a major energy trading and technology business, the firm has significantly expanded its capabilities in renewable power optimisation, analytics, and physical gas trading across international markets. They are now hiring a Senior Data Engineer to join their Technology Data, AI & UX team … working directly with front-office stakeholders and translating trading requirements into robust data solutions. What You’ll Be Doing Building and maintaining high-performance data pipelines ingesting structured and unstructured datasets from a variety of internal and external sources. Developing ingestion processes including scrapers, ETL pipelines, crawlers, streaming jobs ...

integrate into the Arrive Global Platform, we are looking for a Staff Engineer. We are transitioning from a established PHP foundation to a high-performance, modern ecosystem built on Java and Kotlin . We need a technical heavyweight who can navigate our roots while architecting the future of global … platform while collaborating closely with engineers, product teams, and stakeholders. Your work will include: Leading architecture discussions and technical decision-making Improving performance, scalability, and reliability of our platform Diagnosing complex issues across local, pre-release, and production environments Driving engineering best practices across DevSecOps, CI/ ...

documentation, lineage, and observability Lead code reviews and mentor data & analytics engineers Drive CI/CD and infrastructure-as-code adoption Own platform reliability, performance optimisation, and cost efficiency Establish SLAs for data freshness and quality 🤝 Cross-Functional Impact Partner with Data Science, Product, and Engineering leadership Translate … reliable data platform powering AI and analytics growth Reduced ML time-to-production High levels of data quality, observability, and governance maturity Improved cost-performance efficiency across the data stack A strong, growing data engineering capability within the team This is a high-impact leadership role within a forward ...

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 ...

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 ...

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 ...

experience with PyTorch Experience with Hugging Face transformers or similar frameworks Solid experience deploying ML solutions on AWS Understanding of MLOps, model deployment and performance optimisation Ability to work in a consultancy environment with multiple clients Desirable: Experience with LLMs, RAG pipelines or generative AI applications Knowledge ...

providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: Design, develop, and maintain highly efficient Python-based applications … commodities trading, risk management, and real-time data analysis. Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data. Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers. Optimize performance ...

measurement frameworks across paid channels, including attribution, incrementality testing and customer value modelling. • Build and productionise analytical models in Python or R to support performance optimisation and strategic planning. • Partner with senior marketing stakeholders to guide investment decisions through clear, data‐driven insight. • Collaborate with analytics, data engineering … AdTech teams to ensure accurate tracking, robust data foundations and consistent measurement approaches. • Support BAU reporting and performance monitoring through BI tools, ensuring teams understand key drivers and outcomes. Your Skills and Experience • Strong commercial experience in Marketing Analytics within a digital or mobile‐first environment. • Expertise across paid ...

enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable system and API designs, including effective data modelling to support complex … maintainable iOS mobile architectures, leveraging common design patterns such as MVVM or VIPER Advanced proficiency in SwiftUI - Skilled in multi-threading, concurrency, and performance optimisation Prior experience in the search domain or travel industry, such as building or scaling search, discovery in consumer mobile apps. Experience establishing technical ...

Fabric etc) before moving into Product Ownership Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance Development Framework experience within Microsoft Stack Technologies Experience with implementing and optimising scalable cloud infrastructure is highly valued Backlog management ...

Design and build scalable data pipelines and lakehouse/warehouse models on Microsoft Fabric (OneLake, Lakehouse, Data Warehouse, Data Factory). Implement medallion architectures, performance optimisation, and cost management for analytics and AI workloads. Define and enforce data engineering standards, governance, and security in an enterprise environment. Mentor ...

Full Stack Delivery: End-to-end design, development, and deployment of scalable web applications. System Architecture: Application of complex architecture patterns to support high-performance server-side logic. UI Development: Construction of responsive interfaces and layouts using modern JavaScript frameworks. API & Microservices: Development of RESTful services utilizing the Java … Boot ecosystem. Data Management: Design and maintenance of SQL/NoSQL databases and ORM integration. Quality Control: Execution of unit testing, code reviews, and performance optimization to ensure high standards. Essential Skills Core Languages: Advanced proficiency in Java, JavaScript, HTML, and CSS. Back-End: Extensive experience with Java, Spring ...

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 ...

Marketing, Brand, and Regional teams. Act as the primary external-facing marketing lead for strategic partners, driving co-marketing planning, launch execution, and ongoing performance optimization. Retail & Launch Amplification (Partnered Ownership) Partner closely with the Retail team toamplify international retail launches through strategic partners and co-marketing programs. Identify ...

Ensure pipelines are auditable, lineage-aware, idempotent, and resilient in regulated environments. Implement robust data quality controls including testing, validation, monitoring, and alerting. Drive performance optimization across Spark and Snowflake workloads. Partner with Product, Engineering, DevOps, and Regulatory teams to translate requirements into scalable technical designs. Improve engineering standards … your partner, and your child(ren) Employee Assistance Program Enhanced parental leave (maternity & paternity) Professional qualification sponsorship Accelerated career progression based on performance, not tenure Holiday entitlement increases with tenure Flexible hours with core collaboration time Paid volunteering leave Gym & fitness discounts Quarterly socials, and office snacks & drinks Interest ...

certifications, including AWS, Azure, and GCP, along with extensive in-house courses and a mentoring program. Key Responsibilities Design and implement scalable, high-performance architectures for diverse client projects, ensuring alignment with business objectives and technical requirements. Collaborate with clients to gather and analyse requirements, translating them into robust … accessible. Provide technical leadership and mentorship to development teams, guiding them through best practices in software engineering and architecture. Conduct regular code reviews and performance optimisations to ensure high-quality, efficient solutions. Stay up-to-date with emerging technologies and industry trends, evaluating their potential impact on client projects ...

. 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 ...

modernization of its database ecosystem across on-premises and cloud environments. This role is strategic and advisory , focusing on enterprise database architecture, performance optimization, and transformation guidance, rather than day-to-day operational DBA tasks. Key Responsibilities Conduct enterprise database current state assessment and define target architecture . Provide … guidance on performance tuning, reliability, and configuration optimization . Define cloud and hybrid transformation strategies and develop migration roadmaps . Advise on migration governance and post-migration optimization. Design unified monitoring and observability architectures . Establish database governance, standards, and KPI/SLA frameworks . Prepare strategic advisory documents ...

trading desks across Credit, Rates, or FX . The Role You will be part of a team responsible for designing, building, and enhancing high-performance, low-latency trading platforms . Working closely with quants and traders, you will contribute directly to live trading strategies and core system infrastructure. … Responsibilities Develop and optimize high-performance Java-based trading systems Collaborate with quants and traders in a front-office environment Contribute to the design of low-latency, scalable architecture Enhance and support algorithmic trading platforms across asset classes Requirements Strong Java development experience (core Java, multithreading, performance optimization ...