51 to 75 of 103 Performance Tuning Jobs in London

our data team to eliminate reporting bottlenecks in a mature software platform. You'll design and ship a reusable reporting stack, integrating with dashboards and APIs, while ensuring scalability, performance, and alignment with our design system. Lead the design and delivery of a new reporting service built on AWS Redshift. Collaborate with the existing data team to migrate expensive … dashboard tools such as Sisense, Tableau, or Power BI. Comfortable integrating front-end/dashboard solutions with custom APIs and styling frameworks. Strong understanding of large-scale data modelling, performance tuning, and reporting optimisation. Able to work autonomously while engaging stakeholders for direction and validation. Clear communicator with excellent documentation and knowledge transfer skills. What your impact and … Deliver initial stock reports integrated into Sisense with styling aligned to Reapit Elements design system. Migrate priority high-cost queries away from the live DB. Implement monitoring, logging, and performance benchmarking. Within 6 months: Deliver a production-ready, reusable reporting capability , serving both stock and customisable reports. Fully integrated front-end dashboards with API-driven reporting queries. Demonstrable reduction More ❯

hosted open source services exclusively. We strive towards a strong code-first, data as a product mindset at all times, where testing and reliability with a keen eye on performance is a non-negotiable. JOB SUMMARY A Senior Data Engineer, has the primary role of designing, building, and maintaining scalable data pipelines and infrastructure to support data-intensive applications … services for data storage, processing, and analytics. Data Quality and Governance: Implement and oversee data governance, quality, and security measures. Monitoring, Optimization and Troubleshooting: Monitor data pipelines and infrastructure performance, identify bottlenecks and optimize for scalability, reliability, and cost-efficiency. Troubleshoot and fix data-related issues. DevOps: Build and maintain basic CI/CD pipelines, commit code to version … and DevOps. Mentoring: Mentor and guide junior and mid-level data engineers. Technology Selection: Evaluate and recommend technologies, frameworks, and tools that best suit project requirements and architecture goals. Performance Optimization: Optimize software performance, scalability, and efficiency through architectural design decisions and performance tuning. QUALIFICATIONS Proven experience as a Senior Data Engineer, or in a similar role More ❯

text-to-speech, image generation, and enhanced tool calling capabilities Implement and optimize model serving infrastructure using frameworks like vLLM, ONNX Runtime, and Nvidia Triton to achieve production-scale performance requirements Collaborate with DevOps teams on MLOps infrastructure including model monitoring, load testing, caching optimization, and automated CI/CD pipelines for model deployments Contribute to privacy-preserving ML … and data pipeline development Experience integrating LLMs with tool calling/MCP Knowledge of privacy-preserving ML techniques and on-device model deployment Previous work on cost optimization and performance tuning of ML systems at scale What We're Looking For Deep curiosity about emerging AI models and their practical applications Strong problem-solving skills with ability to More ❯

will include: Build the data analytics platform on Databricks Build data pipelines and managed data platforms on AWS Ensuring quality of the ETL processes Automating their Databricks AWS environment Performance tuning and optimisation The tech you will be working with will include: Databricks – experience of this is essential AWS – although experience of Azure will also be fine SQL More ❯

looking for a Senior Front End Engineer to lead the development of immersive, gamified user experiences. You'll work with modern frameworks and animation libraries to build responsive, high-performance interfaces that users love. What You'll Be Doing: Designing and developing UI features using React, Next.js, and TypeScript Applying gamification and animation to enhance user engagement Leading technical … planning and mentoring junior engineers Collaborating across teams to deliver seamless experiences Managing multiple projects with a focus on quality and performance What You'll Bring: 5+ years of front-end development experience Proficiency in React, Next.js, TypeScript, Node.js, CSS Experience with animation libraries (GSAP, Framer Motion, etc.) Strong understanding of responsive design and UI optimization Excellent communication and … project management skills Bonus Points For: Experience in regulated or gaming industries Familiarity with Azure, Jira, Agile methodologies Testing libraries and performance tuning Tags & Skills: Industry: Tech/Digital Product Primary Skills: React, Next.js, TypeScript, UI/UX Secondary Skills: Animation, Gamification, Agile Experience Level: Senior (5+ years More ❯

openness, and excellence. My client work in a collaborative style and take collective responsibility for successes and our failures. We value: High personal integrity Innovative thinking Efficient and reliable performance Spark You will join a supportive team, where we aim to recruit the best people from all walks of life and diverse business backgrounds. If these sentiments align with … the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities and Duties … initiatives. Assist with planning, management and resource allocation of inter-departmental projects alongside the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration More ❯

openness, and excellence. My client work in a collaborative style and take collective responsibility for successes and our failures. We value: High personal integrity Innovative thinking Efficient and reliable performance Spark You will join a supportive team, where we aim to recruit the best people from all walks of life and diverse business backgrounds. If these sentiments align with … the day-to-day operations of the Linux infrastructure team, including both senior-level system administrators and the Linux support desk staff. This role ensures the stability, security, and performance of mission-critical Linux-based systems including multiple exchanges as well as providing strategic direction, operational excellence, effective team leadership and close collaboration with other departments Responsibilities and Duties … initiatives. Assist with planning, management and resource allocation of inter-departmental projects alongside the PM team. Oversee incident management, root cause analysis, and rapid resolution of system outages or performance degradation. Ensure compliance of procedures such as change management, patch management and security and audit processes. Assist in the maintenance of these procedures. Support regular security audits and penetration More ❯

d via Umbrella Key Responsibilities: * Expert-level knowledge of the Elastic Stack (Elasticsearch, Logstash, Kibana, Beats), with proven experience in architecting, deploying, and managing ELK infrastructure across distributed, high-performance environments. * Strong understanding of index lifecycle management (ILM), shard optimization, and cluster health monitoring to support low latency applications. * Practical and working knowledge of IP networking and data flow … within distributed systems. * Experience integrating ELK with packet capture/analysis tools to enhance observability of real-time systems. * Hands-on expertise in data pipeline creation, ingestion strategies, and performance tuning of Logstash and Beats for scalable telemetry. * Knowledge of Corvil and/or Pico tools is highly beneficial but not essential, particularly for ingesting network telemetry into … disaster recovery configurations for global deployment. * Strong understanding of Linux systems, containers, and cloud-native observability stacks. * Organized, self-driven, and able to manage priorities in a dynamic, high-performance trading environment. More ❯

You'll Do Build and scale complex, high-performing web applications with Next.js and React Collaborate with design and product to create polished, intuitive, responsive interfaces Drive improvements in performance, accessibility, and scalability across platforms Contribute to architecture decisions, code reviews, and design discussions Champion best practices in frontend engineering, testing, and CI/CD Mentor and support teammates … plus) Strong eye for UI/UX quality and detail Proficiency in TypeScript and modern frontend tooling Experience integrating with APIs and partnering with backend teams Solid knowledge of performance tuning, accessibility, and SEO Great communicator who can collaborate across disciplines Bonus Points Experience with design systems/component libraries (Storybook, Radix, shadcn/ui) Familiarity with Figma More ❯

team of developers while remaining actively engaged in technical solutioning and development. Ensure alignment of data models and reports with business KPIs, regulatory requirements, and financial planning processes. Perform performance tuning of large datasets, ensuring efficient queries and faster reporting outputs. Work with cross-functional teams (Finance, IT, Data Governance, Architecture) to ensure end-to-end lifecycle delivery …/4HANA and non-SAP data sources. Should have hands on experience on modeling for FI(GL,AP,AR,AA, and CO) processes. Strong grasp of data governance, lineage, performance optimization, and data security concepts. Proven ability to design and implement end-to-end analytics solutions from requirements gathering to production rollout. Excellent communication and stakeholder management skills. SAP More ❯

/CD, and security-by-default practices across our tech organization. Partner with engineering squads to ensure platform capabilities enable high development velocity and reliability. Own cost optimization and performance tuning across our AWS environments. Shape our cloud architecture strategy and ensure alignment with business objectives and compliance requirements. Lead incident response efforts and postmortems, embedding learnings into More ❯

vendor, global network infrastructure. Manage firewall systems and enhance network security practices. Partner with technology and investment teams to deliver scalable, secure network solutions. Conduct network capacity planning and performance tuning. Define and enforce network security standards. Troubleshoot and resolve complex network and security issues. Participate in 24/7 on-call support and out-of-hours maintenance. Ideal More ❯

engineering and data science teams to deploy and monitor machine learning models and analytical services. Implement and enforce security best practices across cloud and network environments. Troubleshoot deployment and performance issues across multiple environments. Set up and maintain observability tools for logging, monitoring, and alerting (e.g., Prometheus, Grafana, Loki). Contribute to internal tooling to streamline development, testing, and … with containerization using Docker. Familiarity with scripting languages such as Bash and Python. Solid understanding of cloud security and networking best practices. Strong experience with Linux system administration and performance tuning. Experience working collaboratively with engineering, data, and ML teams to deliver scalable solutions. Willingness and ability to quickly learn and adopt new tools and technologies. Preferred Qualifications: AWS More ❯

law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performance tuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯

law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performance tuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯

law firm is seeking an experienced Applications Operations Analyst to join its London office. This is a fantastic opportunity to play a key role in maintaining and improving the performance, security, and reliability of enterprise applications across a dynamic and fast-paced professional services environment. Reporting to the Manager of Applications Operations, the successful candidate will be responsible for … patching, monitoring, and troubleshooting, while also contributing to process improvement, documentation, and integration stability. The role involves close collaboration with infrastructure, security, and business teams to ensure seamless application performance and user experience. Key Responsibilities: Perform system maintenance, patching, and upgrades in line with change management procedures Monitor application health and performance, proactively resolving issues Manage user access … base articles Identify opportunities for automation and process optimisation Track and report on KPIs, system uptime, and user engagement metrics Collaborate with cross-functional teams to support scalability and performance tuning Ideal Candidate Profile: 3+ years of experience in enterprise application support or IT operations Strong troubleshooting and analytical skills Familiarity with ITSM platforms (e.g., ServiceNow) and monitoring More ❯

Responsibilities: Perform ongoing system maintenance, patching, and upgrades in coordination with change management procedures Manage user access controls, including provisioning, de-provisioning, and access reviews Monitor system health and performance; initiate health checks and proactively remediate issues Respond to and resolve incidents and service requests in line with SLAs Provide break/fix troubleshooting and root cause analysis across … platforms (e.g., ServiceNow) and monitoring tools Understanding of access management, patch management, and vulnerability remediation processes Familiarity with ITIL practices (Incident, Problem, Change, and Configuration Management) Exposure to application performance tuning, cloud platforms, or scripting (e.g., PowerShell, Python More ❯

Responsibilities: Perform ongoing system maintenance, patching, and upgrades in coordination with change management procedures Manage user access controls, including provisioning, de-provisioning, and access reviews Monitor system health and performance; initiate health checks and proactively remediate issues Respond to and resolve incidents and service requests in line with SLAs Provide break/fix troubleshooting and root cause analysis across … platforms (e.g., ServiceNow) and monitoring tools Understanding of access management, patch management, and vulnerability remediation processes Familiarity with ITIL practices (Incident, Problem, Change, and Configuration Management) Exposure to application performance tuning, cloud platforms, or scripting (e.g., PowerShell, Python More ❯

automate business processes. Integrate Power Apps with various data sources using standard and premium connectors and develop custom connectors if necessary Implement security measures for Power platform solutions Perform performance tuning and optimization of Power Platform solutions Participate in the deployment of Power Platform solutions to higher environments (QA, UAT, Production) Implement and enhance robust ALM process for More ❯

automate business processes. Integrate Power Apps with various data sources using standard and premium connectors and develop custom connectors if necessary Implement security measures for Power platform solutions Perform performance tuning and optimization of Power Platform solutions Participate in the deployment of Power Platform solutions to higher environments (QA, UAT, Production) Implement and enhance robust ALM process for More ❯

complex ETL/ELT patterns. Experience working in Big Query/S3/Glue/Dynamo DB, Dynamic SQLs, V-Arrays, Bulk Collect, Ref Cursors, Record Types and SQL Performance Tuning. More ❯

Responsibilities: Provide infrastructure support across Microsoft Azure, Microsoft 365, backup, and security platforms. Diagnose and resolve technical incidents with minimal disruption. Maintain and optimise infrastructure through patching, monitoring, and performance tuning. Manage and support enterprise security solutions (Fortinet, Microsoft Defender, Sentinel, Mimecast, etc.). Contribute to disaster recovery planning and testing. Document processes, incident resolutions, and technical procedures. Skills More ❯

Responsibilities: Provide infrastructure support across Microsoft Azure, Microsoft 365, backup, and security platforms. Diagnose and resolve technical incidents with minimal disruption. Maintain and optimise infrastructure through patching, monitoring, and performance tuning. Manage and support enterprise security solutions (Fortinet, Microsoft Defender, Sentinel, Mimecast, etc.). Contribute to disaster recovery planning and testing. Document processes, incident resolutions, and technical procedures. Skills More ❯

and Desktops , Citrix Cloud , and Citrix ADC (NetScaler) . Collaborate with cross-functional teams to ensure secure, scalable, and high-performing virtual desktop solutions. Provide expert-level troubleshooting and performance tuning. Drive automation and optimization initiatives within the Citrix estate. Maintain documentation and ensure compliance with internal and regulatory standards. Required Skills & Experience Proven experience as a Citrix SME More ❯

and Desktops , Citrix Cloud , and Citrix ADC (NetScaler) . Collaborate with cross-functional teams to ensure secure, scalable, and high-performing virtual desktop solutions. Provide expert-level troubleshooting and performance tuning. Drive automation and optimization initiatives within the Citrix estate. Maintain documentation and ensure compliance with internal and regulatory standards. Required Skills & Experience Proven experience as a Citrix SME More ❯