20 of 20 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 ...

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 ...

engineers to deliver mission-critical systems in a fast-paced, technology-driven environment. 🔧 What You'll Be Doing Design, develop, and maintain high-performance front-end applications using React and modern JavaScript frameworks Build intuitive, data-rich user interfaces for trading, analytics, and pricing platforms Integrate front-end applications … real-time data feeds and backend services Collaborate with engineers, quants, and business stakeholders to deliver scalable, production-grade solutions Contribute to UI architecture, performance optimisation, and overall user experience 🌟 Why Join? ⚛️ Build Mission-Critical Applications Develop sophisticated front-end systems that directly support investment and trading decisions. ...

ResponsibilitiesAct as the primary technical leader and engineer within the team.Provide technical oversight for analysis, design, and delivery of complex systems.Architect and develop high-performance, scalable, and robust solutions for Communications Surveillance and Record Keeping.Ensure adherence to best practices, including architecture reviews, vendor analysis, cross functional impact assessment … automated testing.Mentor and coach other team members to achieve optimum performance and career growth.Drive innovation by evaluating new Surveillance and Record Keeping technologies and methodologies.Communicate technical concepts effectively to both technical and non-technical stakeholders.Support planning, estimation, and prioritisation of work using agile methodologies.Identify opportunities for system refactoring ...

primary technical leader and engineer within the team. Provide technical oversight for analysis, design, and delivery of complex systems. Architect and develop high-performance, scalable, and robust solutions for Communications Surveillance and Record Keeping. Ensure adherence to best practices, including architecture reviews, vendor analysis, cross‐functional impact assessment … automated testing. Mentor and coach other team members to achieve optimum performance and career growth. Drive innovation by evaluating new Surveillance and Record Keeping technologies and methodologies. Communicate technical concepts effectively to both technical and non‐technical stakeholders. Support planning, estimation, and prioritisation of work using agile methodologies. Identify ...

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 ...

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 ...

Docker), and JVM tuning for containerized workloads. Observability & Operations: Application instrumentation (metrics, distributed tracing, structured logging) and production support in high‐availability environments. Data & Performance: Data modeling, SQL/NoSQL databases, caching strategies, and performance optimization in latency‐sensitive systems. Security: Enterprise security patterns; authentication protocols, mutual ...

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 ...

systems process millions of trades daily, providing clients with real-time insights, regulatory transparency, and post-trade analytics through scalable, reliable, and high-performance applications. We operate at the intersection of scale, performance, and reliability. As engineers, we design full-stack, distributed systems that handle high-volume … highly collaborative team that designs and delivers foundational services used across Bloomberg’s Electronic Trading ecosystem. You’ll have the opportunity to: Build high-performance distributed systems that serve multiple trading workflows and products Design common frameworks and APIs that unify data exchange across applications and services Drive initiatives ...

ensure a seamless, reliable user experience while balancing the demands of development speed and operational stability in a dynamic, international environment.Key Responsibilities:Monitor system performance data and receive alerts through monitoring tools, identify abnormal indicators, recognize system risks, and notify relevant colleagues to resolve issues.Perform emergency system recovery, execute … mainstream monitoring tools such as Prometheus, Grafana, and Zabbix.Experience in Java microservices architecture development or operations, with expertise in Java memory tuning and performance optimization.Experience with common middleware, including but not limited to MySQL, Kafka, ElasticSearch, and Redis.Effective communication in English.Preferred Qualifications:eCommerce or retail industry experience.Intermediate or above ...

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 ...