21 of 21 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 ...

platforms within a highly regulated environment. As an Azure Cosmos DB Developer, you will be responsible for designing efficient NoSQL data models, developing high-performance Cosmos DB solutions, and implementing robust data pipelines. The role requires strong expertise in Azure Cosmos DB internals, Spark/PySpark development, performance optimisation, and cloud-native application engineering. Key Responsibilities Develop cloud-native applications using Azure Cosmos DB Design scalable NoSQL data models aligned to application requirements Implement partitioning strategies, indexing policies, and consistency models Optimise queries and throughput consumption (RU management) Develop and support Cosmos DB Change Data Feed ...

Generative AI tooling Owning the implementation of ML pipelines, APIs and data integration workflows Enforcing MLOps best practices, coding standards, version control and performance optimisation Collaborating cross-functionally with data scientists, product managers, platform engineers, QA and audit professionals Mentoring junior engineers and contributing to internal capability-building ...

sales teams. This is a high-impact role in a fast-paced front-office environment, working on business-critical applications that directly influence sales performance and user experience. Department Overview You will join the Global Markets eCommerce & Digital (EC&D) IT division , a team of approximately 250 professionals based … optimise sales processes Collaborate with production support teams on releases, maintenance and issue resolution Provide third-line support for production systems Ensure high performance, scalability and robustness of applications Required Skills & Experience Minimum 4+ years’ software development experience (or equivalent) Strong server-side Java development expertise Experience building ...

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 ...

Observability Develop monitoring, alerting, and operational dashboards Improve platform resilience, stability, and recoverability Design solutions for failure handling, rollback, and operational recovery Support platform performance optimisation and cost management Governance & Security Implement access controls, security policies, and governance standards Automate compliance and security enforcement through code Collaborate with ...

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. ...

leadership, escalation support, and operational oversight for core enterprise infrastructure, including VMware, Windows Server, Active Directory, DNS, and DHCP Drive infrastructure design, capacity planning, performance optimisation, root cause analysis, and continuous service improvement Participate in an on-call rota and collaborate across teams to maintain service availability ...

pricing distribution and integration across the trading stack. You will: -Develop production grade object-oriented Python applications -Design scalable, resilient backend services -Improve system performance and reliability -Take ownership of defined components and services -Deliver enhancements and new functionalities -Contribute to design discussions and technical improvements -Work directly with … Essential: -Python development experience within a trading environment -Strong OO production Python -Experience building backend or distributed systems -Solid understanding of threading, concurrency, and performance optimisation -Business knowledge of at least one: Fixed Income, FX, Rates This is a PAYE contract via an Umbrella ...

mentor a team of analysts, ensuring high-quality output across projects and campaigns. • Build and manage datasets to support campaign planning, targeting, and performance optimisation. • Apply Python and analytical techniques to solve complex data challenges. • Translate technical findings into clear, actionable insights for non-technical stakeholders. • Support pre-campaign ...

AdTech business looking to hire an Account Manager to join their Customer Success team. This is a client-facing role focused on campaign delivery, performance management, and building strong relationships across agency and advertiser partners. You’ll play a key role in ensuring campaigns run smoothly from launch through … reporting and optimisation, while helping drive long-term client success. The Role Own and manage campaigns throughout the full lifecycle, from setup through to delivery, optimisation and reporting Act as the main point of contact for agency and client stakeholders during live campaigns Build and maintain strong relationships ...

APIs, including SOAP, REST, WSDL, and related standards. Strong technical expertise in XML and Java. Experience supporting interface technologies, networking, data warehousing, and performance optimisation. Proven ability to work with third-party vendors and external partners on integration and data-related initiatives. Personal Attributes Strong analytical, troubleshooting, and problem ...

ability to design and implement production-grade services. Solid experience working with relational and document-oriented databases (SQL and NoSQL), including data modelling and performance optimisation. Experience building and operating containerised applications (e.g., Docker, Kubernetes), with a clear understanding of deployment, runtime behaviour, and production operations. Strong understanding … communication skills, able to engage across engineering, product, and senior business stakeholders. Nice to have: Experience with distributed caching solutions and patterns to improve performance and scalability in high-throughput systems. To find out more about Huxley, please visit (url removed) Huxley, a trading division of SThree Partnership ...

gateways, and third-party vendors Ensure compliance with SCA/PSD2, 3DS, PCI-DSS , and fraud prevention standards Support UAT, go-live, and ongoing performance optimisation Required Experience Proven experience as a Payments Product Owner/Manager focused on online payments Strong track record delivering PSP/gateway … Ecommerce payment flows (checkout, tokenisation, recurring payments) Card schemes (Visa, Mastercard, Amex) Digital wallets (Apple Pay, Google Pay) 3DS/SCA/authentication optimisation Payment decline management and retry logic Settlement, reconciliation, and chargebacks Experience improving checkout conversion and payment success rates Strong Agile delivery and stakeholder management experience ...

candidate will possess deep technical expertise in Murex architecture, environment management, release coordination, middleware, and infrastructure support, with strong experience managing platform stability, deployments, performance optimization, and incident resolution in a global banking environment. You must have several years of IT experience, including a number of years supporting Murex ...

migrating from an on-premise Oracle estate to a modern data platform built on cloud and Databricks. This role leads the design, implementation, and optimisation the Data Mart and migration processes, ensuring alignment with enterprise data architecture and compliance standards. Core Responsibilities Databricks/Modern Data Platform Engineering Lead … Data Marts using Databricks (SQL/Python). Follow engineering best practices including version control, CI/CD, orchestration, and environment management. Ensure governance, performance optimisation. Legacy Oracle Migration Leadership Lead and coordinate the migration of data assets from Oracle database systems to the modern cloud data platform. Oversee ...

ideal for someone who enjoys solving complex infrastructure challenges, working with modern cloud technologies, and collaborating across engineering teams to improve platform reliability, performance, and scalability. What We're Looking For You'll likely enjoy this role if you: Have a strong interest in modern infrastructure and cloud technologies. … Platform Engineer, you will: Serve as a subject matter expert for critical infrastructure supporting globally distributed services. Identify, drive, and implement improvements to platform performance, reliability, and operational processes. Collaborate closely with software engineering teams on architecture, prioritization, and technical solutions. Partner with infrastructure and operations teams to improve ...

operational databases and analytical data warehouses. Design schemas and transformations that support both real-time application requirements and downstream analytics and ML workloads. Optimise performance, cost, and scalability across cloud-based data platforms. Cloud Deployment & Operations Deploy and operate data pipelines and services in AWS. Implement monitoring, logging, alerting … data pipeline and backend development. Strong proficiency in SQL. Hands-on experience with relational databases and cloud data warehouses, including schema design and performance optimisation. Experience integrating data from Microsoft SQL Server, including log shipping or CDC-style approaches. Experience building high-throughput data pipelines from ingestion through transformation ...

Latency) Role Overview- We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance applications. The ideal candidate will have hands-on experience across the full UI development lifecycle, including design, development, testing, and deployment. Technical Skills & Expertise- Frontend Technologies … Have): Exposure to frameworks like Playwright or Cypress Desired Experience Experience working on financial services or trading platforms is an advantage Strong understanding of performance optimization and low-latency UI applications Experience with highly available, mission-critical systems. ...

drive engagement, content discovery, and viewership across streaming surfaces. You’ll be responsible for homepage merchandising, featured rails, genre page promotions, campaign execution, performance optimization, and platform workflow coordination across a fast-paced streaming environment. Ideal candidates will bring strong OTT or streaming merchandising experience, excellent operational execution skills … content merchandising, streaming, digital media, or OTT environments Experience managing in-app merchandising and content curation workflows Strong understanding of engagement metrics and performance optimization Familiarity with CMS tools, platform publishing systems, and merchandising workflows Ability to manage multiple stakeholders across markets and functions Experience collaborating with Product, Marketing ...

About epx Epx, formerly EP&T Global, is a global leader in building performance optimisation. Our EDGE platform powers energy and operational efficiency across real estate in 26 countries, helping reduce waste and improve outcomes. With bold growth ambitions, a customer-first mindset, and trusted expertise, we’re driving … functionally to ensure seamless service delivery and champion the customer voice. Share Insights : Work with the appointed Customer Delivery Analyst to coordinate reporting, present performance data, and provide feedback to improve outcomes. Be the Expert : Develop deep expertise in the EDGE Industrial platform and its underlying IoT technologies. What ...