19 of 19 Contract Performance Optimisation Jobs in London

FX Derivatives & Risk Bromley (3 days per week on-site) 12-month contract Competitive day rate via umbrella Are you a React Developer who thrives in fast-paced, high-performance environments? This is your chance to join a front-office technology team working on cutting-edge trading systems that power global markets. You'll be part of a highly … skilled FX Derivatives & Risk team, building and extending sophisticated front-end applications used by traders and risk managers. Expect a role that combines complex problem solving, UI performance optimisation, and exposure to financial products , all within a collaborative and innovative environment. What you'll be doing: Designing and developing high-performing React applications for FX Options and Risk. … JavaScript, HTML, and CSS. Good understanding of algorithms, data structures, and design patterns. Experience with agile methodologies (Scrum, Kanban, XP) and CI/CD practices. Background in UI design, optimisation, scalability, and reliability. Degree in Computer Science, Engineering, Mathematics, or related field. Bonus points if you have: Experience with derivatives, FX, or trading environments. Previous work on real-time More ❯

to design discussions, code reviews, and maintain documentation in Confluence. Essential Technical Skills Languages & Frameworks TypeScript (Proficient) - primary language for backend and frontend. React (Proficient) - SPA development, state management, performance optimization. js (Proficient) - microservices architecture. GraphQL (Working) - queries, mutations, schema awareness. SQL (PostgreSQL) (Working) - schema design, queries, migrations. JavaScript (Working) - legacy code and Jest tests. Go (Awareness) - infrastructure tooling More ❯

improvements and make key architectural decisions. Experience Extensive production experience architecting and delivering complex applications with TypeScript and Node.js . Expert level GraphQL , including advanced API design, schema evolution, performance optimisation. Strong automated testing frameworks like Vitest and Playwright . Proficiency with modern DevOps tooling and cloud-native architecture, including Docker , Helm , Kubernetes . Proven ability to lead technical More ❯

testing platform , working closely with structurers and front office stakeholders. The position offers direct business interaction, exposure to real-world trading problems, and the opportunity to build robust, high-performance solutions in a dynamic environment. Responsibilities Develop and enhance Python-based models for: Historical index back-testing Daily pricing and index level generation Weighting and rebalancing logic Basket decomposition … with Flask or FastAPI for API development. Proficiency in time-series data manipulation and back-testing methods. Experience working with large datasets and real-time data pipelines . Strong performance optimisation and debugging skills. Confident communicator with the ability to liaise directly with business stakeholders. Desirable Skills Experience in commodities indices, structured products, or index engineering . Knowledge More ❯

Strong proficiency in Pandas , NumPy , and time-series data manipulation Proven experience with FastAPI or Flask Familiarity with large datasets and real-time data pipelines Excellent debugging, profiling, and performance optimization skills Strong communication skills and ability to work with non-technical stakeholders Preferred Skills Experience with commodities indices or structured products Knowledge of market data platforms (e.g., Bloomberg More ❯

ClaimCenter Developer 6+ years’ experience with ClaimCenter, Guidewire Certified. Strong in Gosu, Java, SOAP/REST, Studio, Messaging, Data Model, Rules & Workflows. Lead development, integrations, mentoring, code reviews, and performance optimization. Agile/Scrum experience with solid problem-solving and communication skills. Guidewire ClaimCenter Business Specialist/Analyst 5+ years’ experience with ClaimCenter, Guidewire Certified (preferred). Skilled in More ❯

SAP BTP, SAP HANA, and cloud platforms (Azure, AWS, or GCP). Proficiency in system integration, middleware, and API management. Solid grasp of data security, compliance (e.g., GDPR), and performance optimization. Excellent communication and stakeholder management skills. Ability to lead cross-functional teams and influence at all levels. Preferred Qualifications SAP certifications (e.g., SAP Certified Technology Associate, SAP S More ❯

that consolidates dashboards, reports, and outputs from various data roles into one cohesive experience. The interface will serve as the primary access point for stakeholders to explore data, monitor performance, and make informed decisions. Key Responsibilities Interface Development :Design and build a centralised front-end application that integrates outputs from dashboards, reports, models, and data pipelines into a single … intuitive view. Accessibility Compliance :Ensure the interface meets WCAG 2.2 standards, promoting inclusive access for all users. Performance Optimisation :Deliver fast load times, responsive design, and smooth user interactions across devices. Cross-Functional Collaboration :Work closely with Data Analysts, Data Scientists, Engineers, Business Analysts, and User Researchers to understand data outputs and user needs. Data Visualisation :Implement dynamic More ❯

working with a fast-growing digital marketing consultancy working at the intersection of data, media, and technology. Their mission is to help brands understand their customers better and drive performance through data-driven decision-making. With a diverse team of technologists, analysts, and marketing specialists, they deliver cutting-edge solutions across iGaming, Sports, Retail, and Financial Services. Role Overview … ingestion, pipeline automation, and data transformation. Solid SQL skills with Snowflake (or similar cloud data warehouses). Experience with Airflow or other orchestration tools. Knowledge of data modelling, warehouse performance optimisation, and governance. Cloud experience (AWS preferred; Terraform/Docker a plus). Nice-to-have: browser automation/web scraping (Playwright, Selenium, Puppeteer). If you are More ❯

4+ years of Magento development experience Proficient in Javascript Familiar with Git, Jira, Bitbucket, and agile processes. Solid problem-solving abilities and a collaborative mindset. Understanding of responsive design, performance optimisation, and cross-browser/device compatibility. More ❯

Engineering Team, reporting to the GCC Engineering manager. The primary focus of the role is engineering, troubleshooting and design of the following: Windows 11 group policy, security hardening, build optimisation, least-privilege access, and performance optimisation required to keep our current estate updated and operating efficiently. Microsoft Modern Desktop, including AutoPilot for device provisioning, Intune policy management …/Conditional Access and Defender for Endpoint. Enterprise level Group Policy and Active Directory implementation and troubleshooting skills. Desktop engineering: Advanced Windows 11 troubleshooting. Desktop and Infrastructure troubleshooting and optimisation skills in an Enterprise environment Automation-first: Advanced PowerShell Security tools and principles: Attack Surface Reduction, Least privilege access, Windows hardening, confident engagement with InfoSec. Networking foundations: HTTP, SMTP More ❯

Data Warehouse, and replacing the legacy solution for allocation factor calculation with an innovative, graph database-driven solution. Duties: Lead the design of data architectures and the development and optimisation of ETL/ELT pipelines to enable seamless integration of data from multiple sources, including raw datasets and outputs from GraphDB (NEO4J), hosted on Google Cloud Platform (GCP). … Create and document technical solution designs, including detailed specifications. Address complex technical challenges such as performance optimisation, data traceability, and managing large-scale data sets. Oversee quality assurance across environment configuration, query development, data processing, staging tables, and related components. Facilitate and lead technical meetings to advance data modelling techniques and validate outcomes. Engage with Programme Architects to More ❯

between business stakeholders and technology teams, translating trading needs into technical solutions. Drive platform upgrades, integration efforts, and workflow enhancements. Provide expert-level input on ION configuration, connectivity, and performance optimization. Collaborate with vendors and internal teams to ensure seamless delivery and support. Requirements: Proven experience as an ION SME within an investment banking or trading environment. Strong understanding More ❯

implement end-to-end ServiceNow solutions across multiple modules. Deep understanding of the ServiceNow platform architecture, data model, and security framework. Expertise in ServiceNow best practices, including platform governance, performance optimization, and security hardening. Proven experience with large-scale ServiceNow implementations and complex integrations. Strong analytical and problem-solving skills with the ability to articulate complex technical concepts to More ❯

forms, rules, dashboards, and validations to streamline planning processes. Support planning scenarios such as rolling forecasts, annual operating plans, and long-range outlooks. Contribute to data integration, system testing, performance optimization, and documentation. Provide knowledge transfer and support post-implementation stabilization. Outline Thebes Group: Thebes Group is a leading UK wide IT infrastructure technology consultancy. We are well-known More ❯

to work with a high profile end customer. Key Requirements: Proven experience as a Database Administrator (PostgreSQL DBA) Must hold Active Security Clearance (SC) Core development/maintenance and performance optimisation (sharding, partitions) Experience with clustering and extensions such as Pgvector PostGIS and AGE Data migration experience from existing database(s) to Postgres database(s) Ability to recreate More ❯

SC) to work with a high profile end customer.Key Requirements: Proven experience as a Database Administrator (PostgreSQL DBA) Must hold Active Security Clearance (SC) Core development/maintenance and performance optimisation (sharding, partitions) Experience with clustering and extensions such as Pgvector PostGIS and AGE Data migration experience from existing database(s) to Postgres database(s) Ability to recreate More ❯

with existing team to ensure smooth transition handover at termination of contract Contribute to CI/CD workflows using Azure Pipelines within an Azure cloud environment. Optimize application for performance, scalability, and accessibility. Troubleshoot and resolve issues across the front end, supporting integration points with back-end services. Maintain design consistency, usability, and accessibility standards across applications. Requirements Proven … of .NET (C#) and how React applications integrate with it. Familiarity with Azure environments, ideally including Azure Pipelines for CI/CD. Strong understanding of responsive design, accessibility, and performance optimization. Familiaity with calender page optimisation A team player with good communication skills More ❯

with existing team to ensure smooth transition handover at termination of contract Contribute to CI/CD workflows using Azure Pipelines within an Azure cloud environment. Optimize application for performance, scalability, and accessibility. Troubleshoot and resolve issues across the front end, supporting integration points with back-end services. Maintain design consistency, usability, and accessibility standards across applications. Requirements Proven … of .NET (C#) and how React applications integrate with it. Familiarity with Azure environments, ideally including Azure Pipelines for CI/CD. Strong understanding of responsive design, accessibility, and performance optimization. Familiaity with calender page optimisation A team player with good communication skills More ❯