26 to 50 of 241 Performance Optimisation Jobs in London

WordPress websites and applications. Develop custom WordPress themes, plugins and Gutenberg blocks. Produce clean, maintainable and well-documented code. Build responsive, accessible and high-performance websites. Work collaboratively with designers, project managers and clients. Mentor and support junior developers. Lead technical discussions and code reviews. Attend client meetings … MySQL WordPress REST API Custom Post Types Advanced Custom Fields (ACF) Custom plugin development WooCommerce experience Gutenberg Block development WordPress security best practices Performance optimisation and Core Web Vitals Front End CSS3 SASS/SCSS JavaScript (ES6+) jQuery Responsive development Cross-browser compatibility Modern Development Git version control ...

needs into scalable, secure, and high performing solutions. You will also take ownership of reviewing existing systems, identifying opportunities to simplify, refactor, and improve performance and reusability. This is an opportunity to have real impact across our platform and help drive architectural excellence across the organisation. Responsibilities System Design … system is innovative and cost-effective. Quality Assurance: Ensure software designs and implementations follow best practices, coding standards, and appropriate testing methodologies. Guarantee high performance, security, and scalability of the architecture. Documentation & Communication: Create clear, comprehensive, and maintainable documentation for system architectures, workflows, and technical specifications. Communicate effectively with ...

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 ...

infrastructure. You will also touch frontend interfaces occasionally to help expose backend capabilities seamlessly. Key Responsibilities API & System Architecture: Design, build, and maintain high-performance RESTful APIs, microservices, and event-driven architectures for AI-powered media workflows. Data Processing & Storage: Build robust data pipelines, database schemas, and caching layers … integrate model inference and training workflows into production backend systems. Operational Health & Observability: Implement application-level logging, metrics, and alerting; actively participate in performance profiling, root-cause analysis, and production incident resolution alongside our DevOps team. Performance Optimisation: Optimise server-side code, async queues, and database queries ...

Business Platform team supporting critical Financial Crime and Payments systems. You will play a key role in designing, building, and operationalising a high-performance Apache Cassandra platform that underpins a real-time payment capture and replay solution for fraud detection.This role requires deep technical expertise in Apache Cassandra, NoSQL … data modelling, performance optimisation, and production support within a highly regulated financial services environment. You will work closely with application, infrastructure, middleware, and security teams to deliver a resilient, scalable, and secure data platform.Key ResponsibilitiesDesign and implement Apache Cassandra clusters, keyspaces, replication strategies, and partitioning models.Develop scalable Cassandra ...

highly skilled Power BI professional who enjoys working across the full BI lifecycle, from data modelling and dashboard development through to governance, optimisation, and stakeholder engagement. You'll work closely with Data Engineering teams and business leaders to deliver trusted, scalable, and high-performing reporting solutions. Key Responsibilities … maintain scalable data models using dimensional modelling and star schema best practices Develop advanced DAX calculations and Power Query transformations Optimise report and dataset performance, ensuring reliability and scalability Partner with Data Engineering teams to support data warehousing and analytics architecture initiatives Implement and maintain Power BI governance, security ...

deliver measurable value Design and implement complex data flows, API integrations, and background processing systems that handle high-volume operations reliably while maintaining system performance and data integrity Partner with product, design, and customers to shape solutions early, translating business requirements into technical architecture while surfacing risks and opportunities … approach, straight from the people you’ll be working with: Node.js - primary backend framework MongoDB or other NoSQL database SQL databases and query optimisation RESTful API design and implementation Git - version control and collaborative workflows Testing strategies (unit, integration, end-to-end) Experience with monitoring, logging, and observability tools ...

contribute knowledge back to the team Participate in capability‐building activities and knowledge‐sharing sessions Build expertise in production AI systems, model evaluation, and optimisation techniques Essential Skills Solid software engineering experience with a focus on production Generative AI and RAG systems Demonstrated experience building and deploying AI systems … Cursor, GitHub Copilot, Claude) Production experience with AWS cloud services and familiarity with containerization (Docker, Kubernetes) Solid understanding of ML fundamentals, model evaluation, and performance optimisation Good communication skills with ability to collaborate effectively across teams Data engineering capability, including working with datasets, ETL pipelines, and metrics definition ...

initiatives that support critical store operations across M&S. Provide technical leadership on complex, high-impact projects, driving engineering excellence through code reviews, deployment optimisation and adoption of engineering best practices. Collaborate with stakeholders across Product, Delivery, Architecture, Infrastructure and senior leadership to deliver solutions aligned to business priorities … scalable cloud-native solutions using Azure, Kubernetes, Docker and modern platform technologies. Strong understanding of operational excellence, observability, resilience and production support, including monitoring, performance optimisation and security best practices Excellent leadership, stakeholder management and mentoring skills, with the ability to influence technical direction and drive continuous improvement ...

guide a team of product engineers in delivering impactful outcomes for DISCO and our customers. You contribute directly to technical design, implementation, and optimisation within your team’s scope and across the engineering org, while also supporting engineers to grow their skills and careers. You know when … people management. You work in close collaboration with your product and design peers to prioritise and deliver work that balances feature delivery with quality, performance and reliability, ensuring technical feasibility and customer value. You will also collaborate with technical leaders to drive engineering and architecture excellence, and work with ...

Cursor, GitHub Copilot, Claude) Production experience with AWS cloud services and familiarity with containerization (Docker, Kubernetes) Solid understanding of ML fundamentals, model evaluation, and performance optimization Good communication skills with ability to collaborate effectively across teams Data engineering capability, including working with datasets, ETL pipelines, and metrics definition Experience ...

security and code quality. Leverage Azure services (App Services, Functions, Container Apps, SQL, etc.) for cloud‐native application development and deployments. Manage Azure deployments, performance tuning, and basic cloud administration tasks to ensure scalability and reliability. Collaborate with stakeholders and cross‐functional teams to align technical solutions with business … lifecycle management. Skilled in Azure SQL Server with deep hands‐on experience in writing complex Stored Procedures, Triggers, and Views, along with strong application performance optimization expertise. Cloud experience in Azure App Services, Azure Functions, Azure Container Apps, and deployments, with exposure to basic cloud administration. Knowledge of microservices ...

support integrations between Dynamics 365 and external systems using APIs, web services, middleware platforms, and cloud technologies. Investigate issues, resolve defects, and improve the performance, reliability, and usability of existing Dynamics 365 solutions. Engage with business analysts, consultants, stakeholders, and end users to understand requirements and deliver effective technical … solutions. Apply secure coding practices, development standards, and performance optimisation techniques across Dynamics 365 and Power Platform solutions. Maintain awareness of Microsoft product updates, platform improvements, and emerging technologies relevant to Dynamics 365 development. Skills and Experience Essential: Proven experience developing solutions within Microsoft Dynamics 365 environments. Strong ...

C++ Software Developer | Data Infrastructure London | C++ | Microservices | Distributed Systems | Linux We're looking for an experienced C++ Software Developer to build the high-performance data infrastructure that powers quantitative research and trading. You'll develop low-latency microservices responsible for processing, storing and delivering large-scale datasets, working … alongside quantitative researchers, data engineers and software engineers to build scalable, resilient systems where performance is critical. You'll bring Minimum 4+ years' commercial C++ development Strong Linux experience Microservices and/or asynchronous multithreaded applications Excellent debugging and performance optimisation skills Strong software engineering fundamentals ...

manage AI platforms and agent infrastructure - Build and maintain CI/CD pipelines and DevOps workflows - Implement observability, monitoring, and logging solutions - Optimise performance, scalability, and cost efficiency - Support AI teams with infrastructure, deployment, and integration - Ensure platform security, compliance, and high availability - Automate infrastructure using Infrastructure as Code … practices - Experience with Kubernetes/containerisation technologies - Strong programming skills (e.g. Python, Go, Node.js) - Experience with observability tools (e.g. OpenTelemetry, Datadog) - Understanding of security, performance optimisation, and scalability Desirable Skills - Experience working on AI/ML platforms or deployments - Exposure to large-scale distributed systems - AWS certifications ...

complex technical dependencies across Snowflake, dbt, Airflow, and GitHub‐based development workflows. Collaborating closely with data engineering and analytics teams to support Snowflake architecture, performance optimisation, and cost management. Overseeing dbt project delivery, testing approaches, deployment governance, and documentation standards. Defining and enforcing SDLC and CI/… delivery timelines. Facilitating technical discussions and translating complex technical concepts for non‐technical stakeholders. Driving continuous improvement in programme delivery processes, tooling, and performance metrics. Ensuring adherence to data governance, security, and regulatory compliance standards. Your Profile Essential skills/knowledge/experience: Proven experience in a Technical Program ...

ensuring consistent delivery against ambitious commercial objectives. Key responsibilities include: Developing and delivering the national sales strategy to drive sustainable revenue growth Owning sales performance, forecasting, budgeting and territory planning Building, coaching and developing a high-performing field sales team Creating a culture of accountability, continuous improvement and commercial … excellence Establishing scalable sales processes, performance metrics and reporting frameworks Monitoring key business performance indicators and identifying opportunities for growth and optimisation Collaborating with senior leadership and cross-functional teams to align commercial objectives with wider business goals Building strong relationships with executive-level stakeholders across ...

Azure DevOps or Jenkins, supporting automated testing and controlled promotion between environments Provide 3rd-line production support, including system monitoring, troubleshooting, error resolution and performance optimisation Required Experience: Extensive hands-on experience with Dell Boomi AtomSphere (Process, Mapping, Profiles) alongside Boomi MFT and Boomi API Management Strong enterprise ...

cloud data platform. Support the adoption of modern engineering practices, automation and AI-assisted development tools. Champion best practice around data quality, governance and performance optimisation. Skills & Experience Essential Strong commercial experience as a Data Engineer. Expert knowledge of Snowflake . Strong experience with DBT . Data modelling experience ...

OAuth Authentication Middleware Integration Patterns DevOps & Tools Salesforce DX Git Azure DevOps Copado Jenkins (desirable) VS Code Data Loader Technical Leadership Solution Design Application Performance Optimization Code Review & Quality Assurance Mentoring Development Teams Agile/Scrum Delivery Knowledge of Government Digital Services (GDS) HMRC Governance Processes Data Protection & GDPR ...

complex data challenges, building scalable pipelines and working with modern cloud technologies. The successful candidate will play a key role in the ongoing development, optimisation and support of an established data platform while also mentoring more junior engineers within the team. As a Senior Data Engineer … customer-facing applications. Working closely with engineers, analysts and stakeholders, you'll help drive best practice across data engineering, data quality and platform performance whilst contributing to the evolution of the organisation's data capabilities. Key Responsibilities: Design, develop and maintain ETL and data integration solutions Build and optimise ...

near real-time. They're looking for an experienced Technical Lead to define the technical direction of the Azure Databricks platform, driving architecture, performance optimisation and engineering best practices across one of the organisation's most strategic cloud modernisation programmes. Responsibilities for the Contract Technical Lead – Azure Databricks … through to production. Drive best practices across data engineering, platform architecture, governance, security and engineering standards, mentoring teams and influencing technical direction. Optimise Databricks performance, including Structured Streaming, Delta Live Tables and cloud cost efficiency. Partner with business stakeholders, architects and engineering teams to translate complex requirements into scalable ...

cloud, endpoint, network and SaaS sources Define and continuously improve data quality standards to support detection, investigation and threat hunting Contribute to the operation, performance and evolution of the Elastic Security platform Apply software engineering and scripting skills, for example in Python or Bash, to automate ingestion, validation, monitoring … Qualifications Strong experience with Elastic Stack and data engineering technologies such as Logstash, Beats, Kafka or similar Expertise in Elastic data modelling, indexing and performance optimisation Experience designing scalable log collection and processing architectures Knowledge of data governance, retention and security telemetry across cloud, endpoint and network Experience ...

Rest Framework, with occasional exposure to GraphQL Collaborate with product owners, stakeholders, and engineers to shape technical solutions Contribute to system architecture, refactoring, and performance optimisation Ensure high code quality through PEP8 compliance, automated formatting (Black, isort), and best practices Drive strong testing culture, including unit and integration … role, managing or mentoring a small development team Solid understanding of software architecture and system design principles Strong experience with relational databases and SQL optimisation Hands‐on experience with Docker (Dockerfiles, Docker Compose) Excellent knowledge of software engineering best practices, testing, and CI/CD workflows Confidence working ...

digital products. Your role involves ensuring that the code aligns with these requirements and adheres to our architectural and front-end coding standards. Performance optimisation is key, and you'll employ best practices to enhance our applications. Additionally, you'll stay proactive by suggesting upgrades and updates … providing our employees with a comprehensive benefits package that prioritises their wellbeing, professional growth, and financial stability. Share in our success with our Quarterly Performance-Related Profit Share Scheme, where employees collectively benefit from a share of our company's profits. Strong Career Progression & mentorship coaching through our Strength ...