26 to 50 of 80 Performance Optimisation Jobs in London

Define and evolve event-driven architectures and messaging strategies to power automation and connectivity across the enterprise. Provide technical leadership for large-scale, complex applications - from conceptual design to performance optimisation. Influence strategic decisions across cloud-native , SaaS , and on-premises environments. Collaborate with senior stakeholders, delivery teams, and other architects to ensure alignment with business objectives. Support proof More ❯

With the power of many curious minds, together we can solve the world's most complex challenges and deliver more impact together. Role description: We are looking for a Performance Insights Consultant to join Arcadis' Business Advisory team. You will play a key role in shaping and delivering high-impact, data-led transformation projects across our Mobility, Places, and … delivery, you will engage with mentors, team leaders, and line managers to support your career development, wellbeing, and progression within Arcadis. In Management Consultancy, you'll enhance our clients' performance by developing asset strategies and plans, and delivering them using information, technology, and behavioural change capabilities. Role accountabilities: Lead and deliver client-facing workstreams within transformation programmes Apply Arcadis … 5D Framework (Diagnose, Design, Deploy, Drive, Demonstrate) to structure and deliver impactful outcomes Generate actionable insights across cost, performance, risk, and operational effectiveness Develop and implement scalable reporting and benchmarking solutions Leverage expertise in business intelligence, advanced analytics, and data storytelling to drive client value Embed modern analytics tools and approaches into client programmes to enable sustainable improvements Collaborate More ❯

the Remote Command Centre (RCC) The BGIS Remote Command Centre (RCC) is a technology-driven hub that leverages advanced analytics, real-time monitoring, and expert interventions to optimise building performance remotely. By utilising a team of subject matter experts, the RCC reduces operational costs, improves energy efficiency, enhances occupant comfort, and supports clients in achieving sustainability goals. Key RCC … risks Support for IoT mobilisation and smart building technologies Continuous improvement through data-driven insights Purpose of Job The RCC Operative is responsible for the proactive monitoring and remote optimisation of building systems. Using real-time data from Building Management Systems (BMS), Fault Detection & Diagnostics (FDD) platforms, and IoT telemetry, the RCC Operative identifies inefficiencies, executes first-line interventions … raised by the RCC, actions taken, and closures achieved. Quantify the impact of RCC interventions, such as response time, resolution time, first-time fix rate, energy savings, improved system performance, or reduced operational risk. Track and communicate trends in recurring issues to support root cause analysis and continuous improvement. Contribute to monthly/quarterly client reports highlighting RCC performance More ❯

Develop multi-touch attribution models and support data strategy development Collaborate with internal teams and external partners to deliver seamless campaign reporting Drive continuous improvement through automation, testing, and performance optimisation Identify opportunities for personalisation and enhance data processes for better decision-making Skills & Experience Required: Proven experience in digital analytics with knowledge of CRM, loyalty programs, social … media, and performance marketing Strong knowledge of analytics platforms and marketing technology tools, especially Adobe and Salesforce Expert user of Adobe Analytics Experience with data visualisation tools like Tableau or Power BI Excellent communication skills with the ability to influence stakeholders at all levels Benefits £400-£450 per day inside IR35, London based, 2-3 days per week in 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 ❯

API, and CSS frameworks . Integrate emerging tech : Incorporate AI/ML APIs, LLM-driven features, and automation tooling into our products. Design for scale : Lead on API design, performance optimisation, and secure, cloud-ready architectures. Build the team : Recruit, mentor, and grow high-performing engineers while raising the quality bar. Collaborate : Translate product goals into clear technical More ❯

batch data flows to support AI-driven applications. Collaborating with AI engineers to ensure data readiness for model training and inference. Driving best practices in data governance, security, and performance optimisation. What We're Looking For Strong experience with Azure cloud services, especially Data Factory, Synapse, Databricks, and Azure Functions. Proficiency in Python, SQL, and data transformation techniques. Experience More ❯

batch data flows to support AI-driven applications. Collaborating with AI engineers to ensure data readiness for model training and inference. Driving best practices in data governance, security, and performance optimisation. What We're Looking For Strong experience with Azure cloud services, especially Data Factory, Synapse, Databricks, and Azure Functions. Proficiency in Python, SQL, and data transformation techniques. Experience More ❯

Kanban). Proficient with CI/CD tools and practices. Track record of leading teams or making key technical decisions on mobile projects. Demonstrable knowledge of REST APIs and performance optimisation. Committed to accessibility standards and inclusive design. Why Join? Flexible hybrid working: Work remotely with occasional visits to the office Opportunities for continuous learning, growth, and internal mobility. More ❯

facing app and a native SDK for real-time, on-device data collection. The role blends deep technical engineering with a product-focused mindset, with strong emphasis on usability, performance, and scalability. In this senior position, the Senior iOS Engineer will contribute to architectural decisions, influence product direction, and mentor others, while collaborating with backend and data engineers in … with modern iOS tooling (SwiftUI, UIKit, CoreData, Clean Architecture, MVVM, Dependency Injection, etc.) Proven experience building scalable SDKs for third-party use Strong knowledge of architecture, design patterns, and performance optimisation Able to work across the full app lifecycle, from design to release and iteration Collaborative, product-focused, and comfortable mentoring engineers Familiarity with Agile, cross-functional environments … Interest in using AI tools to improve productivity and developer experience Senior iOS Engineer - Salary & Benefits: Basic salary up to £85,000 Performance-related bonus Share options Private medical insurance & income protection Enhanced pension Minimum 25 days holiday Flexible hybrid working If you're a Senior iOS Engineer who enjoys building reliable, scalable apps in a collaborative and mission More ❯

on a native SDK that powers real-time data collection directly on devices. The role blends hands-on mobile engineering with architectural thinking, with a strong emphasis on usability, performance, and scalability. The iOS Developer will work closely with backend and data engineers in cross-functional squads, taking part in system design, product discussions, and architectural decisions. You'll … and patterns (SwiftUI, UIKit, CoreData, MVVM, Clean Architecture, Dependency Injection, etc.) Proven experience developing scalable SDKs for external or internal use Strong knowledge of mobile architecture, design patterns, and performance optimisation Track record of delivering across the full app lifecycle, from feature design to release and iteration Collaborative, product-driven mindset, with the ability to mentor junior engineers … Experience working in Agile, cross-functional teams Interest in using AI tools to boost productivity and improve code quality iOS Developer - Salary & Benefits: Base salary up to £85,000 Performance-related bonus Share options Private medical insurance & income protection Enhanced pension scheme Minimum 25 days annual leave Flexible hybrid working model - typically 1 day per month in central London More ❯

on a native SDK that powers Real Time data collection directly on devices. The role blends hands-on mobile engineering with architectural thinking, with a strong emphasis on usability, performance, and scalability. The iOS Developer will work closely with Back End and data engineers in cross-functional squads, taking part in system design, product discussions, and architectural decisions. You … and patterns (SwiftUI, UIKit, CoreData, MVVM, Clean Architecture, Dependency Injection, etc.) Proven experience developing scalable SDKs for external or internal use Strong knowledge of mobile architecture, design patterns, and performance optimisation Track record of delivering across the full app life cycle, from feature design to release and iteration Collaborative, product-driven mindset, with the ability to mentor junior … Experience working in Agile, cross-functional teams Interest in using AI tools to boost productivity and improve code quality iOS Developer - Salary & Benefits: Base salary up to £85,000 Performance-related bonus Share options Private medical insurance & income protection Enhanced pension scheme Minimum 25 days annual leave Flexible hybrid working model - typically 1 day per month in central London More ❯

will be considered) • Proven startup experience (corporate-only backgrounds will not be considered) • Expert-level proficiency in React, TypeScript, modern frontend frameworks and architectures • Strong understanding of state management, performance optimization, and scalable component-driven design • Experience with testing frameworks (Jest, Cypress, Playwright) • Comfort with open-source principles and contributions • Clear, confident communication in English (minimum C1, no heavy More ❯

within the space. Location is either remote; or hybrid if you are based in London, Paris or Singapore. Very high level of raw programming talent Low-level development/performance optimization 2+ years coding HFT systems/Trading system development Solid understanding of how order books, order state machines, etc. work Rust programming skills (can accept primarily C/ More ❯

queries for data persistence Ensure application scalability and reliability in cloud-hosted Linux based environment Collaborate with DevOps to containerize services and deploy using CI/CD pipelines Conduct performance tuning, code reviews, and troubleshooting production issues Document system architecture, design decisions, and development processes What we want from you Strong hands-on experience with Core Java and multithreading … in high load system Practice with JVM performance optimization and memory profiling Familiarity with distributed systems architecture and in-memory computing concepts Proven experience with in-memory caching solution Apache Ignite in production environment Solid experience with MongoDB (CRUD, indexing, performance tuning) Deep SQL knowledge and query optimization in Oracle database Solid understanding of messaging technologies Apache Kafka … receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as: 27 days annual leave (plus bank holidays) A discretional annual performance related bonus Private Medical Care & Life Insurance Employee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family, and friends Note: this page contains a description of More ❯

Role Summary We are seeking a highly skilled VMware Engineer for our high profile public sector Client on a contract basis. The Engineer specialist will support the deployment and optimisation of VMware Cloud Foundation (VCF) within the CNI Platform , a secure, airgapped infrastructure. They will lead VCF implementation with a focus on integration with Cisco ACI and Pure Storage … an airgapped setup. Security & Compliance : Leverage Cisco ACI's security capabilities-including policy-based segmentation and traffic control-to enforce strict access controls and compliance within the airgapped environment. Performance Optimisation : Monitor and fine-tune virtual infrastructure for reliability and efficiency. Documentation & Handover : Produce detailed implementation documentation and support knowledge transfer to internal teams. Stakeholder Collaboration : Liaise with More ❯

data analyst or BI-focused position Advanced proficiency in Power BI (essential), including dashboards, DAX, Power Query, and complex data modeling Strong SQL skills for data extraction, transformation, and performance optimisation (essential) Solid understanding of data warehousing principles such as star and snowflake schemas, as well as ETL processes Experience in designing and implementing semantic and tabular models More ❯

working in Unreal Engine 4+, especially with stylised rendering pipelines. Background in both hard-surface and organic/foliage asset creation. Familiarity with parallax layering, shader-driven workflows, and performance optimisation for portable platforms. Benefits A competitive salary. A clear career progression path with opportunities for growth and recognition. Fully remote position, offering the flexibility to work from More ❯

We are seeking a Senior-Level Java Engineer to join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and enhancing high-performance, scalable financial applications. This is a fantastic opportunity for an ambitious developer with experience in Java and a passion for the financial sector. The role follows a hybrid working … Design, develop, and maintain high-quality Java-based applications for financial services. Collaborate with cross-functional teams to deliver robust and scalable software solutions. Ensure code quality, security, and performance standards are met. Work on both greenfield and existing applications, improving architecture and implementing best practices. Troubleshoot and resolve complex technical issues. Participate in code reviews and provide constructive … Area 5+ years of experience in Java development (Java 8 or later). Experience with Spring Boot, Microservices architecture, and RESTful APIs. Strong understanding of multi-threading, concurrency, and performance optimization. Knowledge of SQL and database technologies (PostgreSQL, MySQL, or similar). Experience with messaging systems (Kafka, RabbitMQ) is a plus. Exposure to cloud platforms such as AWS, Azure More ❯

technical vision of this business and work on their product from an early stage. What you'll work on: Backend APIs (Python/FastAPI): Build and maintain secure, high-performance services that drive AI features and data access at scale. RAG & vector search: Design and improve retrieval pipelines (embeddings, chunking, hybrid search, ranking, feedback loops), owning schema design, latency … platform on AWS (ECS), separating ingestion, retrieval, reasoning, and delivery. Quality & reliability: Ensure reliability through testing, CI/CD, observability (metrics/tracing for LLM and retrieval paths), and performance optimisation. Collaboration: Partner with product and leadership teams, mentor peers, and play a role in shaping technical direction. Innovation: Explore and recommend new technologies, frameworks, and methods for both More ❯

function. The successful candidate will contribute to a range of initiatives focused on improving data quality, accessibility, and performance. Design and maintain data pipelines, including error-handling, automation, and performance optimisation. Resolve data queries by tracing issues to source systems. Define and deliver cloud-based data analytics platform requirements using modern EDW tools and practices. Maintain clear and accurate More ❯

quality through code reviews, automated testing, and adherence to development best practices. Manage deployments and environments using tools like Git, Docker, or CI/CD pipelines. Troubleshoot bugs and performance issues across the stack. Qualifications 3+ years of experience working with Drupal 8/9/10 in full-stack development roles. Strong proficiency in PHP, MySQL, and JavaScript. … Understanding of RESTful services and API integrations. Version control using Git (GitHub/GitLab/Bitbucket). Experience working in Agile environments. Knowledge of web security best practices and performance optimization. More ❯

loves writing clean, scalable services - but who also thrives in ambiguity and is motivated by solving problems that don't yet have clear answers. You care about system design, performance, and shipping features that support real people doing critical work. And you bring enough experience to know when to challenge, when to align, and how to build software that … and resilience. Familiarity with AI/ML systems, or demonstrable ability to quickly ramp up in highly technical, ambiguous domains. Strong knowledge of REST APIs, distributed system design, and performance optimization. Experience with both SQL and NoSQL data stores, caching layers, and observability tooling (e.g., Prometheus, Datadog). Nice To Have Experience deploying or integrating LLMs or NLP models More ❯

a talented Java Developer with strong expertise in Spring Boot to join our team. You'll be involved in the full software development lifecycle-designing, developing, and maintaining high-performance applications that are scalable and reliable. This is a great opportunity to work with modern tools, frameworks, and cloud technologies while contributing to impactful projects. Key Responsibilities Application Development … scalable code; participate in peer code reviews. Debugging & Testing: Troubleshoot issues and conduct unit/integration testing. Collaboration: Work closely with cross-functional teams on requirements, architecture, and design. Performance Optimization: Ensure applications are optimized for speed, scalability, and high availability. Documentation: Maintain comprehensive technical and project documentation. Required Skills & Qualifications Strong expertise in Java and Spring Boot (hands More ❯

SD-WAN, cloud networking, and AI-driven automation to support global business operations. The leader will oversee next-generation network architecture, operations, and transformation, ensuring a seamless and high-performance connectivity experience. Key Responsibilities: Strategic Leadership & Transformation: Define and execute a modern network platform strategy, integrating cloud networking, software-defined networking (SDN), and AI-driven automation. Ensure end-to … time incident detection and response using AI-driven network analytics. Ensure high availability, network resilience, and 24x7 operational support. Develop a follow-the-sun support model, ensuring global network performance optimization. Implement network observability and predictive analytics to proactively prevent outages. Security, Compliance & Risk Management: Drive zero-trust security frameworks, ensuring secure and resilient network access. Ensure adherence to … to enhance network threat detection and mitigation. Implement automated security policy enforcement, reducing human intervention in risk mitigation. Financial & Vendor Management: Optimize network infrastructure spending, ensuring cost-effective, high-performance connectivity. Lead vendor selection, contract negotiation, and vendor relationship management. Ensure network services align with business goals, optimizing ROI and cost efficiency. Leadership & Talent Development: Build and mentor a More ❯