126 to 150 of 492 Performance Optimisation Jobs in London

TypeScript End to end testing applications with Detox/Appium/WebdriverIO/Playwright Extensive experience in modern web development, including responsive design and performance optimization Hands‐on experience with design systems, component libraries, and implementing consistent UI/UX across large‐scale applications #ICBCareers #ICBEngineering J.P. Morgan ...

pressure, shifting environments Strong stakeholder management skills, building productive relationships and driving outcomes aligned with firm objectives Understanding of data platform trade-offs, including performance optimization, cost management, scalability, and operational excellence Deep technical understanding of modern data platform architectures, including data lakes, data warehouses, Lakehouse architectures, and distributed ...

bonus if you have... Familiarity with GPU node orchestration & scheduling You understand the intersection of GPU infrastructure, inference systems, Kubernetes, distributed systems, and performance optimization. Full-Time Employees at Cohere enjoy these Perks: A weekly lunch stipend of $75/£75 or equivalent in your local currency for lunch. ...

your career. The roleThis is an exciting opportunity to shape and mature operational processes through automation and observability. You will own the reliability, performance, and security of the organisation's network and security infrastructure across datacentre and office environments. This is a hands-on technical leadership role focused … operational excellence, automation, observability, and incident response — ensuring high availability, resilience, and a strong security posture. Key responsibilities: Own the day-to-day performance, stability, availability, and security of network platforms across datacentre, WAN, and campus environmentsLead response to critical incidents, driving rapid diagnosis, containment, and long-term remediationChampion ...

clean, ready-to-use data models. Data Modelling: Implement best-practice data modelling and software engineering techniques to ensure data structures are optimised for performance, accuracy, and ease of use in reporting and analytical applications (e.g. CI/CD, testing, lineage). Data Quality and Testing: Write comprehensive data … their reporting needs and optimise data models to support their analytical use cases. Collaborate with Data Engineers on data ingestion strategies and platform optimisation. Performance Optimisation: Tune and optimise SQL queries and data models to reduce latency and improve the performance of our data warehouse and downstream ...

particular focus on Azure Cosmos DB and NoSQL data modelling. You'll design and optimise data models, schemas and data structures, while considering performance, scalability and cost. You'll also support data migration and integration projects, working with technologies such as Azure Data Factory and SQL to build pipelines … scalable data models across SQL and NoSQL, with a strong focus on Azure Cosmos DB Design and optimise Cosmos DB models, including partitioning, indexing, performance, scalability, and cost. Define and implement data contracts, including schemas, versioning, and validation rules. Design and orchestrate ETL/ELT pipelines using Azure Data ...

that responsibility shapes the way we work. We move fast. We care about quality. We stay close to the detail. And we believe great performance and genuine hospitality should go hand in hand. If you want to build meaningful products, solve real problems and make a genuine difference … management, and Strong Customer Authentication (SCA) flows—into secure, end-to-end user experiences backed by reliable APIs. Build and maintain data-rich, high-performance interfaces for transaction feeds, balances, statements, and multi-currency views, ensuring efficient data fetching, state management, and seamless interaction with backend services. Develop ...

working with a Tier 1 investment bank, helping modernise a suite of electronic trading applications by replacing legacy Angular and desktop technologies with high-performance React applications used by traders around the world. The Role As a Front End Engineer, you'll build mission-critical trading applications that process … contributing to shared engineering standards, reusable UI components and platform tooling. The work combines modern front-end engineering with distributed systems, messaging technologies and performance optimisation, making it ideal for engineers who enjoy solving complex technical challenges. Responsibilities Design, develop and maintain high-performance React and TypeScript ...

will include: Build, enhance and maintain high-quality, well-tested web applications using Angular and C# Contribute to UI architecture, component design, reusability and performance Design and implement backend services, APIs and data integrations Work across the full application lifecycle: requirements gathering, design, implementation, testing, release and support Build … grade backend technologies such as C#/.NET (preferred) or Java Good understanding of modern UI patterns, state management, component-driven development and web performance optimisation Solid understanding of application architecture, data modelling and integration patterns Strong problem-solving skills across multiple technologies and business domains Enthusiastic, collaborative ...

dashboards Build scalable data models (star schema, Kimball methodology) and advanced DAX measures Use Power Query (M) for data transformation Optimise report/dataset performance and manage deployment across environments Implement governance standards (naming conventions, documentation, RLS) Validate data via SQL and translate business requirements into BI solutions across … production Advanced Power BI (data modelling, DAX) and advanced SQL Experience with enterprise data warehouses, medallion architecture, Kimball methodology Strong grasp of BI performance optimisation Microsoft Fabric familiarity (Lakehouse, Dataflows Gen2) Strong stakeholder management and communication skills What's on Offer Private Medical Insurance, Critical Illness Cover, Life ...

Visualforce, SOQL/SOSL, triggers, controllers and Salesforce platform technologies . Design reusable development frameworks and components, ensuring high standards across code quality, performance, testing and maintainability . Implement complex Salesforce configuration, automation, workflows, approvals, validation rules and security controls . Agentforce, AI & Data Cloud Design and develop Salesforce … leadership across Salesforce programmes, contributing to solution design, development standards, code reviews and engineering best practices . Drive continuous improvement across development, automation, platform performance and technical delivery. Key Skills Extensive hands‐on experience delivering enterprise Salesforce solutions , with strong development expertise across Apex, Lightning Web Components (LWC), Visualforce ...

values, with close attention to point in time integrity (as of date versioning, no look ahead bias, clean handling of revisions). Automation and optimisation: automate data workflows and build in data quality checks so parsing failures, gaps or stale data are caught before they reach research. Documentation … time to time Technical Requirements: Proven experience with Python, especially Pandas and NumPy Mastery of SQL and PostgreSQL: schema design, complex queries, indexing and performance optimisation, beyond basic querying Experience with pipeline orchestration and scheduling Proven ability to deliver reliable, tested scripts against a written specification ...

products. This is a hands-on role with significant influence over how the platform evolves. You will help modernise parts of our stack, improve performance and reliability, and support the development of Blink IQ 2.0 , our customer-facing analytics product. You’ll work closely with engineering, DevOps and stakeholders … help stakeholders access reliable insights Contribute to architectural decisions as the data platform evolves What We’re Looking For Strong SQL skills, including performance optimisation and complex queries Experience building and maintaining data pipelines at scale Experience with a modern data stack (e.g. Snowflake, dbt, Fivetran, Debezium ...

environments, supporting live trading and electronic trading platforms. These environments are production‐critical, operate in real time and require strong ownership of system stability, performance and incident management. The role involves close interaction with traders, developers, IT support and infrastructure teams. Role Overview We are looking for a Front … improve trading and electronic trading systems. The role is strongly technical and production-oriented. It combines hands‐on system operation, deep investigation of incidents, performance optimisation and automation, with close proximity to Front Office users. This position suits profiles who enjoy owning systems in production, understanding how applications ...

/ELT pipelines Experience integrating data from multiple enterprise systems Knowledge of cloud-based data platforms and data migration Strong understanding of data modelling, performance optimisation and data quality Experience working across the full software development lifecycle Ability to troubleshoot production issues and implement sustainable fixes Strong communication ...

with Docker, GitHub, and CI/CD pipelines; Proven ability to work across teams and drive delivery into production; Strong problem-solving, debugging, and performance optimisation skills; Solid software engineering foundations, including version control, automated testing, and monitoring; Nice to have: Experience with agentic AI systems, GenAI ...

strong SQL Event-driven or asynchronous architectures Queues, retries and distributed processing System design and architectural decision-making Automated testing Monitoring and observability Performance optimisation Secure application development CI/CD and modern deployment practices We're looking for roughly 3+ years of relevant commercial experience, but depth ...

driven architectures, data pipelines, relational and NoSQL databases, vector databases, observability tooling, and automated deployment pipelines Solid understanding of algorithms, data structures, scalability, reliability, performance optimization, security best practices, and engineering trade-offs Experience mentoring engineers through code review, pairing, debugging, documentation, and the promotion of engineering excellence through ...

classes, controllers, triggers, Visualforce and web services. Experience developing Salesforce integrations using REST and SOAP APIs. Strong knowledge of SOQL, SOSL, dynamic queries and performance optimisation. Experience writing unit tests and applying code quality and coverage best practices. Knowledge of asynchronous Apex, including Batch Apex, Queueable Apex and Future ...

classes, controllers, triggers, Visualforce and web services. Experience developing Salesforce integrations using REST and SOAP APIs. Strong knowledge of SOQL, SOSL, dynamic queries and performance optimisation. Experience writing unit tests and applying code quality and coverage best practices. Knowledge of asynchronous Apex, including Batch Apex, Queueable Apex and Future ...

Visualforce pages, and web services. Experience developing and supporting Salesforce integrations using REST and SOAP APIs. Experience with Salesforce SOQL, SOSL, dynamic queries, and performance optimisation. Experience writing unit tests and implementing best practices for code quality and coverage. Strong knowledge of asynchronous Apex, including Batch Apex, Queueable Apex ...

targetIt's a bonus if you have...Familiarity with GPU node orchestration & schedulingYou understand the intersection of GPU infrastructure, inference systems, Kubernetes, distributed systems, and performance optimization. Full-Time Employees at Cohere enjoy these Perks: A weekly lunch stipend of $75/75 or equivalent in your local currency ...

intelligence, building systems that integrate machine learning models, data pipelines, and cloud-native services. This role is ideal for someone passionate about clean architecture, performance optimization, and applying AI technologies to real-world business challenges. Requirements Key Responsibilities Design, develop, and maintain high-performance Java-based applications Integrate … backend systems Build RESTful APIs and microservices using modern Java frameworks Collaborate with data scientists to deploy and scale machine learning solutions Optimise system performance, scalability, and security Implement CI/CD pipelines and ensure high code quality standards Work with cloud platforms to deploy AI-powered services Contribute ...

designing, building, and optimising mission‐critical trading services across multiple asset classes.**Role Responsibilities** **Experience/Competences** Strong experience designing and building high‐performance, low‐latency Java services within electronic tradingStrong experience with distributed messaging technologies (Solace/Kafka) and real‐time systems Strong experience designing and building event … driven systems deployed to cloud environments (AWS, EC2, EKS, Kubernetes)Experience with memory architectures and network performance in low latency platformsExperience with Maven or Gradle (Maven preferred), and JUnit Experience in Git or other source control systemsExperience in CI/CD concepts Strong communication skills with the ability ...

background in Python development, experience integrating AI and ML models or APIs into production systems, and the ability to build scalable, secure, and high-performance applications. Experience with data processing, cloud-native architectures, and modern AI development patterns will be highly valued. Responsibilities Develop, test, and maintain AI-powered … workflows Support the implementation of retrieval-based and prompt-driven AI experiences, including semantic search and contextual response generation Optimize application and model integration performance for scalability, reliability, latency, and maintainability Collaborate with cross-functional teams to define, design, and ship AI-enabled features and solutions Implement best practices ...