76 to 100 of 576 Performance Optimisation Jobs in London

Data Engineer

Hiring Organisation
Bertelsmann
Location
London, United Kingdom
Salary
£ 60 K
move reliably between systems and be used for reporting, analytics and day to day operations.Maintain DK’s Snowflake data environment, including data models, schemas, performance, and data quality controls.Bring together data from different internal and external sources and make sure it is secure, accessible and aligned with PRH data … tools such as Power BI and Microsoft Fabric.Create clear documentation including technical notes, data definitions and service transition materials.Support testing, incident resolution and performance monitoring for DK data solutions.Lead technical conversations and reviews, sharing best practice across data engineering, automation, data modelling and BI.Keep improving DK’s data infrastructure ...

react developer for digital products

Location
Greater London, England, United Kingdom
Contribute to code reviews, testing, and CI/CD deployment pipelines Collaborate with product, design, and backend teams in an agile environment Optimise application performance and ensure responsive design across devices Document code and participate in knowledge-sharing with the team Требования 5–10 Years of software development experience … United Kingdom Nice to have: Experience with Next.js, TypeScript, or Tailwind CSS, knowledge of Agile methodologies and sprint-based delivery, familiarity with performance optimisation and accessibility standards, Meta Front-End Developer Certificate, JavaScript Certification (JSE), freeCodeCamp Front End Libraries (React) or similar credentials, experience with Azure ...

Senior Engineer - LMEsmart

Location
City Of London, England, United Kingdom
role is to engineer resilient Inter-Office integrations and workflows that automate recovery, streamline price-band governance, and surface real-time matching performance—reducing manual effort, improving compliance, and strengthening Inter-Office market oversight. Develop the automation of test tooling and framework development for the Inter-Office Trading platform … Required Knowledge and Level of Experience: Degree in Computer Science, IT or related disciplines. 5+ years’ experience in software development with Java (JVM), including performance optimisation and profiling. Deep understanding of cloud infrastructures, usage patterns, across at least one major cloud vendor. Knowledge of off-heap data structures ...

Senior Software Developer

Location
Greater London, England, United Kingdom
technical discussions and contribute ideas that support product improvement and delivery effectiveness Diagnose complex technical issues, including integration challenges, data consistency issues, and performance improvements Support knowledge sharing and code quality through peer reviews and collaboration Contribute to a collaborative engineering culture focused on clean, efficient code and practical … enterprise software environment Strong hands‐on expertise in C#, .NET/.NET Core, and SQL/T‐SQL Solid understanding of database design, performance optimisation, and query tuning Experience delivering front‐end functionality using HTML, JavaScript, and Razor Experience building and supporting integrations with third‐party systems using ...

Senior Consultant/Manager, AI/ML Engineer, AI Scaling and Transformation, Engineering, AI & Data, Technology & Transformation

Hiring Organisation
Deloitte
Location
London, United Kingdom
Salary
£ 80 K
workstreams, ensuring engineering outputs are aligned to agreed requirements, delivery plans and quality standards.Support the deployment and operationalisation of AI systems, including model monitoring, performance optimisation, CI/CD and MLOps practices.Collaborate with solution architects, data scientists, business analysts and engineers to ensure AI solutions are integrated effectively … model evaluation and responsible AI considerations. Understanding of MLOps and production AI practices, including CI/CD, model versioning, monitoring, automated testing, retraining and performance optimisation. Experience using cloud platforms and cloud-native AI/ML services, such as Azure, AWS or GCP, to build and deploy scalable solutions. ...

Full Stack Developer

Location
Greater London, England, United Kingdom
Docker and containerised development environments. Knowledge of cloud platforms such as AWS, Azure or similar. Experience developing and consuming RESTful APIs. Experience with application performance optimisation, including database queries and efficient application code. Experience with modern JavaScript tooling and front-end build processes. An interest in emerging ...

cloud engineer for data platforms

Location
Greater London, England, United Kingdom
frameworks, transformation patterns, orchestration strategies, and data governance standards Establish and enforce data engineering best practices covering schema evolution, data contracts, validation frameworks, and performance optimization Build scalable backend data services and APIs for analytics tools, product applications, and downstream consumers Lead the integration of operational systems, external applications ...

AI Consultant/ Solution Architect

Location
Greater London, England, United Kingdom
solution delivery from proof of concept through production deployment. Work alongside customers during implementation, ensuring successful integration with existing enterprise systems. Support solution validation, performance optimization, testing, and production readiness. Resolve technical challenges and recommend architecture improvements throughout project execution. Cross‐functional Collaboration Partner with Product, Engineering, AI, Customer ...

Data Engineer

Hiring Organisation
Tiro Partners Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £90,000 per annum
pipelines using Python and orchestration tools such as Dagster. Create and optimise efficient data models to support both transactional and analytical workloads. Develop high-performance SQL queries, procedures, and integrations for APIs and data services. Debug, enhance, and maintain existing systems and codebases. Build and execute unit and integration … tests to ensure reliability and maintainability. Conduct profiling and performance optimisation to improve scalability and responsiveness. Produce clear technical documentation for pipelines, databases, and architecture. Collaborate with cross-functional engineering teams across backend, cloud, and product development. Contribute to architectural decisions and continuously evaluate new technologies and best ...

Senior Software Engineer (GoLang)

Location
Greater London, England, United Kingdom
Effectively evolve, enhance, and modernise large-scale systems to enable rapid adaptability and continuous improvement Drive the adoption of technologies like Go Improve the performance, reliability, and scalability of our systems Develop and drive automation for deployment, monitoring, and scaling of infrastructure. Build tools and processes to enable continuous …/CD) Make data-guided decisions that impact core business metrics and processes Solid understanding of platform and reliability engineering approaches, including observability, performance optimisation, capturing analytics, and security best practices Facilitate collaboration between teams and build a culture of continuous improvement Mentor more junior engineers, providing guidance ...

2026/Q1 - Senior Quantitative Modeller [Closed]

Location
Greater London, England, United Kingdom
core modelling and analytics platform. Implement, validate, and productionise advanced models for asset allocation, risk, macro and scenario analysis, including data preparation, testing, calibration, optimisation, and maintenance as models and data evolve. Develop AI‐assisted research and modelling workflows, including data engineering, model design, evaluation, and monitoring. Translate theoretical … client‐facing applications. Design, operate, and evolve cloud‐based data and model workflows, including orchestration, scheduling, monitoring, and failure handling. Contribute to system architecture, performance optimisation, and scalability as the platform and dataset complexity grow. Establish and uphold high engineering and research standards, including testing, documentation, and reproducibility. ...

Principal Data Engineer - Finance & Transformation

Location
Greater London, England, United Kingdom
processing that underpins data across the organisation. Principal Data Engineers are expected to lead the data lifecycle from development to deployment, monitoring, incident response, performance optimisation, and deprecation in line with modern DevOps principles. Leading agile teams and supported by senior engineers, this role involves building reusable components … build, test, and deploy data pipelines to support the secure and scalable delivery of data. Maintain and operate data products, ensuring their availability, performance, and resilience through monitoring, alerting, patching, and incident resolution. Assure code and automation scripts to manage data flows. Lead service reviews, health checks, and root ...

Principal Data Engineer - Finance & Transformation

Hiring Organisation
British Airways
Location
Feltham, Middlesex, United Kingdom
Salary
£ 70 K
processing that underpins data across the organisation. Principal Data Engineers are expected to lead the data lifecycle from development to deployment, monitoring, incident response, performance optimisation, and deprecation in line with modern DevOps principles. Leading agile teams and supported by senior engineers, this role involves building reusable components … build, test, and deploy data pipelines to support the secure and scalable delivery of data. Maintain and operate data products, ensuring their availability, performance, and resilience through monitoring, alerting, patching, and incident resolution. Assure code and automation scripts to manage data flows. Lead service reviews, health checks, and root ...

Senior Oracle Fusion Reporting Consultant

Location
Greater London, England, United Kingdom
continuous improvement across Oracle Cloud environments. As a trusted advisor and subject matter expert, you will play a key role in the design, support, optimisation, and evolution of reporting and analytics solutions across Oracle Fusion ERP, HCM, Procurement, and Supply Chain Management (SCM) . Working closely with customers … reporting solutions that support critical business operations and decision-making. Lead the design and implementation of reporting strategies that deliver: Data accuracy and reconciliation Performance optimisation Business value and alignment Security, governance, and compliance Support reporting and analytics requirements across: Oracle ERP Human Capital Management ( HCM ) Procurement Supply ...

Senior Oracle Fusion Reporting Consultant

Hiring Organisation
Hackajob Ltd
Location
South West London, London, United Kingdom
Employment Type
Permanent, Work From Home
continuous improvement across Oracle Cloud environments. As a trusted advisor and subject matter expert, you will play a key role in the design, support, optimisation, and evolution of reporting and analytics solutions across Oracle Fusion ERP, HCM, Procurement, and Supply Chain Management (SCM) . Working closely with customers … reporting solutions that support critical business operations and decision-making. Lead the design and implementation of reporting strategies that deliver: Data accuracy and reconciliation Performance optimisation Business value and alignment Security, governance, and compliance Support reporting and analytics requirements across: Oracle ERP Human Capital Management ( HCM ) Procurement Supply ...

Senior Oracle Fusion Reporting Consultant

Location
Westminster, West End, United Kingdom
continuous improvement across Oracle Cloud environments. As a trusted advisor and subject matter expert, you will play a key role in the design, support, optimisation, and evolution of reporting and analytics solutions across Oracle Fusion ERP, HCM, Procurement, and Supply Chain Management (SCM) . Working closely with customers … reporting solutions that support critical business operations and decision-making. Lead the design and implementation of reporting strategies that deliver: Data accuracy and reconciliation Performance optimisation Business value and alignment Security, governance, and compliance Support reporting and analytics requirements across: Oracle ERP Human Capital Management ( HCM ) Procurement Supply ...

Oracle OCI Multi Cloud Engineer

Hiring Organisation
Accenture
Location
London, United Kingdom
Salary
£ 80 K
solution proposals, architecture options papers, and business cases to senior stakeholders and governance boardsLead architecture assurance and design authority reviews, ensuring solutions meet security, performance, resilience, and compliance requirementsDefine solution patterns and reference architectures for Oracle cloud workloads that can be reused across programmesManage technical risk throughout the solution … environments (11g, 12c, 19c and above) on-premises and in cloudManage Oracle Database Service deployments across OracleDB@Azure, OracleDB@AWS, and OracleDB@GCPPerform database performance tuning, patching, backup and recovery, and capacity planningManage Oracle RAC, Data Guard, and ASM environmentsSupport Oracle Advanced Security features including TDE, audit vault ...

Principal Data Architect - Databricks & AI

Location
Greater London, England, United Kingdom
model-data pipelines, vector search and retrieval-augmented generation patterns where relevant. Create prototypes and proof-of-concepts, review technical designs and code, guide performance optimisation, and help resolve complex technical issues. Build production-ready solutions with strong governance, lineage, quality, observability, security, reliability and cost control. Partner … comparable senior technical leader. Advanced, hands-on Databricks experience in production environments, including lakehouse architecture, Delta Lake and relevant governance, workflow, SQL and optimisation capabilities. Proven ownership of modern data platforms or data products from architecture through production delivery and operation. Strong experience in data privacy and security, including ...

Director of Platform Engineering

Location
Greater London, England, United Kingdom
software engineering budget, evaluate third-party technologies, and manage relationships with external development agencies and SaaS vendors. Collaboration: Work closely with Director of Performance Engineering and Director of Liveline to end-to-end data pipeline is fit for purpose. Engineering Excellence & Technical Execution: System Architecture: Guide architectural decisions … implementing best-practice with an AI first software engineering approach (agile methodologies, unit testing, refactoring, rigorous code reviews, and CI/CD pipelines). Performance & SEO: Direct technical strategies for concurrency, profiling, and performance optimisation in high-traffic, live-event environments. Ensure all platforms adhere to foundational ...

Senior Engineer - LMEsmart

Location
Greater London, England, United Kingdom
role is to engineer resilient Inter-Office integrations and workflows that automate recovery, streamline price‐band governance, and surface real‐time matching performance—reducing manual effort, improving compliance, and strengthening Inter‐Office market oversight.Develop the automation of test tooling and framework development for the Inter-Office Trading platform—onboarding … Required Knowledge and Level of Experience:*** Degree in Computer Science, IT or related disciplines.* 5+ years’ experience in software development with Java (JVM), including performance optimisation and profiling.* Deep understanding of cloud infrastructures, usage patterns, across at least one major cloud vendor.* Knowledge of off‐heap data structures ...

Power BI Developer & Data Modeller

Hiring Organisation
Tenth Revolution Group
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£450.00 per day
variety of business functions. Create and manage semantic layers, datasets and reusable reporting assets. Build advanced DAX measures, calculations and business logic. Improve dashboard performance, scalability and end-user experience. Apply data security controls and reporting governance best practices. Support testing, deployment and ongoing optimisation of reporting products. … reporting and data modelling disciplines. Technical Requirements Proven expertise delivering Power BI solutions in enterprise environments. Advanced DAX development experience. Strong SQL querying and performance optimisation skills. Experience designing and maintaining analytical data models. Exposure to large, complex datasets and enterprise reporting environments. Knowledge of Power BI Service ...

SC Cleared Pega Lead System Architect / Solution Architect

Hiring Organisation
Hays Technology
Location
London, United Kingdom
Employment Type
Contract
Contract Rate
£553/day £553 per day (inside IR35)
Review solution designs and implementations to ensure compliance with Pega guardrails and engineering best practice. Lead complex technical decision-making and resolve architectural and performance challenges. Design scalable integration patterns using REST APIs, connectors, services, data pages and enterprise integration technologies. Define authentication, authorisation, access control and security architecture. … Ensure solutions meet performance, scalability, resilience, availability and maintainability requirements. Establish application monitoring, optimisation and troubleshooting approaches. Define CI/CD, DevOps, branching, deployment and release-management strategies. Support production readiness, deployment planning and technical assurance activities. Facilitate technical workshops and communicate architecture decisions to technical ...

SC Cleared Pega Lead System Architect / Solution Architect

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East England, United Kingdom
Employment Type
Full-Time
Salary
£553.00 per day
Review solution designs and implementations to ensure compliance with Pega guardrails and engineering best practice. Lead complex technical decision-making and resolve architectural and performance challenges. Design scalable integration patterns using REST APIs, connectors, services, data pages and enterprise integration technologies. Define authentication, authorisation, access control and security architecture. … Ensure solutions meet performance, scalability, resilience, availability and maintainability requirements. Establish application monitoring, optimisation and troubleshooting approaches. Define CI/CD, DevOps, branching, deployment and release-management strategies. Support production readiness, deployment planning and technical assurance activities. Facilitate technical workshops and communicate architecture decisions to technical ...

Senior Game Engine Programmer

Hiring Organisation
Tencent
Location
London, United Kingdom
Salary
£ 80 K
cooperation, etc.What the Role EntailsWe are looking for a Senior Game Engine Programmer to join our engine team and contribute to the development and optimisation of cutting-edge game engine technologies. In this role, you will work on core engine systems across areas such as engine architecture, rendering, animation … physics, performance optimisation and cross-platform development.You will collaborate closely with gameplay, tools, art and production teams to build scalable and high-performance engine solutions for multiple platforms, including mobile, PC and console. You will also help solve complex engine challenges, and mentor other engineers within ...

Senior Tech Lead, Quantitative Analytics Engineering

Hiring Organisation
London Stock Exchange Group
Location
London, United Kingdom
Salary
£ 100 K
support solutions for private capital markets.WHAT YOU'LL BE DOING: Lead the design, development, and delivery of Private Markets Analytics product solutions, ensuring scalability, performance, maintainability, resilience, and high engineering quality.Lead technical architecture and system design for distributed, cloud-native applications and services.Drive adoption of AI/LLM technologies … Private Markets, alternative assets, portfolio analytics, financial data platforms, Fixed Income, or Multi-Asset Analytics is a strong plus.Strong understanding of software architecture, scalability, performance optimisation, and modern system design principles.Excellent communication, stakeholder management, and technical leadership skills.Career Stage:ManagerLondon Stock Exchange Group (LSEG) Information:Join ...