476 to 500 of 848 Performance Tuning Jobs

Mid-level circa £45,000) About the Role: Join a values-driven digital agency where your work really makes a difference. You'll be developing high-traffic, performance-critical backend systems for organisations with impact-from cultural institutions to public-sector bodies. You'll work alongside front-end developers, designers and project leads to build secure , scalable , and fast … performing platforms , primarily in PHP and using Drupal. What We're Looking For: Strong PHP skills with a framework-based approach Experience optimising performance for large-scale sites Solid understanding of web security best practices and resource/performance tuning Experience with Git and collaborative development Excellent communication, estimation and team mentoring experience Bonus: Drupal experience, Cloudflare More ❯

person IT hub in Romania, though recent offshore support has proven unreliable. Project Overview The business is undertaking a comprehensive health check of its IT systems to ensure stability, performance, and readiness for future scaling. This includes reviewing SQL Server environments, identifying risks, and recommending upgrades or optimisations. The role is critical to maintaining operational continuity and supporting future … transformation. Key Responsibilities Conduct a full health check of existing SQL Server databases and infrastructure Review and optimise database performance, indexing, and query efficiency Identify and resolve potential risks or vulnerabilities in the current setup Recommend and implement upgrades or patches where necessary Ensure high availability and disaster recovery configurations are in place Document findings and provide clear recommendations … offshore teams (Romania) Support knowledge transfer and handover for future permanent hire Essential Skills & Experience Proven experience as a SQL Server DBA in enterprise environments Strong understanding of database performance tuning and optimisation Experience with backup/recovery strategies and disaster recovery planning Ability to conduct system audits and produce actionable recommendations Comfortable working independently and remotely Excellent More ❯

a live production environment. This is a hands-on engineering role, suited to someone who can move beyond theory designing, implementing, and optimising real-world solutions that enhance the performance, scalability, and maintainability of our data layer. Youll join a collaborative engineering team and act as a subject-matter expert in MongoDB usage, schema design, and data interaction patterns … within Django applications. What Youll Do Design and implement solutions that improve how Django and MongoDB interoperate. Review and refactor existing data models, ensuring performance and scalability. Work closely with backend teams to guide best practices around schema design, indexing, and query optimisation. Educate and mentor engineers on effective MongoDB usage patterns and integration strategies. Help evolve internal tooling … development. What Were Looking For Proven experience as a Senior Software Engineer with a strong focus on backend systems and database design. Advanced MongoDB knowledge schema design, aggregation pipelines, performance tuning, replication, and indexing strategies. Strong experience with Django and MongoEngine , including hands-on integration work. Ability to architect, build, and deliver solutions not just advise or design More ❯

a live production environment. This is a hands-on engineering role, suited to someone who can move beyond theory — designing, implementing, and optimising real-world solutions that enhance the performance, scalability, and maintainability of our data layer. You’ll join a collaborative engineering team and act as a subject-matter expert in MongoDB usage, schema design, and data interaction … patterns within Django applications. What You’ll Do Design and implement solutions that improve how Django and MongoDB interoperate. Review and refactor existing data models, ensuring performance and scalability. Work closely with backend teams to guide best practices around schema design, indexing, and query optimisation. Educate and mentor engineers on effective MongoDB usage patterns and integration strategies. Help evolve … What We’re Looking For Proven experience as a Senior Software Engineer with a strong focus on backend systems and database design. Advanced MongoDB knowledge – schema design, aggregation pipelines, performance tuning, replication, and indexing strategies. Strong experience with Django and MongoEngine , including hands-on integration work. Ability to architect, build, and deliver solutions — not just advise or design More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency ( Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards What … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ Pension/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you’ll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7–10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7–10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7–10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7–10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7–10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

+ benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40s) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

+ benefits/Bonus Join a leading financial technology and trading organisation driving innovation in electronic markets. As an eFX Software Engineer, you'll design and deliver high-performance, low-latency trading solutions that underpin mission-critical systems. This role offers the chance to work on cutting-edge technology where speed, scalability, and resilience are key. About the Role … Lead the design and development of secure, high-performance eFX systems Define and evolve Java patterns and techniques optimised for ultra-low latency (<40μs) Architect fault-tolerant, scalable trading systems Influence technical strategy, architecture, and product roadmaps Collaborate with multiple teams to deliver best-in-class E-trading platforms Ensure all solutions meet security, compliance, and performance standards … level Java development, including low-GC and lock-free patterns Proven background in FX trading systems, pricing, and risk management Deep understanding of CPU architecture, cache optimisation, and Linux performance tuning Expertise in networking and messaging (TCP, UDP, Multicast, FIX) Knowledge of quantitative instruments and algorithmic trading Experience implementing controls in automated trading environments Skilled in TDD, automated More ❯

large-scale data platforms with a focus on ETL, Data Management, and Data Governance Develop and maintain Databricks Delta Live Tables (DLT) pipelines with strong emphasis on cost and performance optimisation Implement and manage structured streaming and real-time data processing solutions. Handle and process high volumes of data efficiently within Databricks Translate business requirements into technical delivery plans … solutions Lead a technical delivery team of 7-10 members, providing direction, guidance, and support throughout the project lifecycle Ensure best practices are followed in data architecture, governance, and performance tuning Drive continuous improvement in data engineering processes and platform scalability Required Skills & Experience: Proven experience in building multiple large-scale data platforms Deep expertise in Databricks, especially … Delta Live Tables (DLT) and structured streaming Strong understanding of data governance, data modeling, and pipeline orchestration Hands-on experience optimising Databricks workloads for performance and cost Excellent communication and collaboration skills to bridge business and technical teams Prior experience leading data engineering teams or project delivery squads This needs combining with a positive attitude and an ability to More ❯

Web Developer - SaaS - Swindon (Hybrid, 3 Days in Office) (Tech stack: Web Developer, .NET Framework, WebForms, ASP.NET MVC, React, TypeScript, SCSS, Accessibility, API Integration, Performance Optimisation, Testing, Front End Developer) Our client is an established technology business that builds and maintains sophisticated digital platforms used across multiple sectors. They're embarking on a major UI modernisation programme, evolving their … and error handling. Develop and maintain a reusable component library and manage CSS architecture, responsive layouts, and theming. Ensure accessibility and semantic HTML standards are met. Optimise front-end performance, applying modern best practices. Implement client-side authentication flows and manage secure sessions. Write and maintain front-end tests covering key user journeys. Own and maintain front-end tooling … state management. Deep understanding of HTML5, CSS3, modern JavaScript/TypeScript, responsive design, and browser behaviour. Hands-on experience with accessibility standards (WCAG), semantic markup, and ARIA. Knowledge of performance tuning techniques including lazy loading, code splitting, and asset optimisation. Experience consuming secure REST APIs from the browser. Familiarity with front-end testing frameworks such as Jest, React More ❯

or PL/SQL environments. Build and maintain REST and SOAP APIs , supporting seamless system integrations. Create and convert reports using RERX, ARC, and Xtra , applying best practices for performance and maintainability. Use scripting (PowerShell, Liquid) to automate processes and streamline delivery. Conduct system testing, performance tuning, and troubleshooting to identify and resolve complex technical issues. Support More ❯

or PL/SQL environments. Build and maintain REST and SOAP APIs , supporting seamless system integrations. Create and convert reports using RERX, ARC, and Xtra , applying best practices for performance and maintainability. Use scripting (PowerShell, Liquid) to automate processes and streamline delivery. Conduct system testing, performance tuning, and troubleshooting to identify and resolve complex technical issues. Support More ❯

support and maintenance for Unix and Linux environments (Solaris and Red Hat), ensuring high system availability, rapid issue resolution, and compliance with security standards. You’ll handle incident management, performance tuning, and patching, as well as contribute to documentation and knowledge sharing across the team. The role is based on-site in Barrow five days a week due … schedule to support critical operations. Key responsibilities Monitor, maintain, and troubleshoot Unix/Linux systems in production and development environments Apply regular patches and updates to ensure security and performance compliance Respond to alerts, incidents, and service requests, resolving technical issues within SLA Manage user accounts, permissions, and file systems Automate routine administration tasks using Bash or Python scripting More ❯

support and maintenance for Unix and Linux environments (Solaris and Red Hat), ensuring high system availability, rapid issue resolution, and compliance with security standards. You’ll handle incident management, performance tuning, and patching, as well as contribute to documentation and knowledge sharing across the team. The role is based on-site in Barrow five days a week due … schedule to support critical operations. Key responsibilities Monitor, maintain, and troubleshoot Unix/Linux systems in production and development environments Apply regular patches and updates to ensure security and performance compliance Respond to alerts, incidents, and service requests, resolving technical issues within SLA Manage user accounts, permissions, and file systems Automate routine administration tasks using Bash or Python scripting More ❯

support and maintenance for Unix and Linux environments (Solaris and Red Hat), ensuring high system availability, rapid issue resolution, and compliance with security standards. You’ll handle incident management, performance tuning, and patching, as well as contribute to documentation and knowledge sharing across the team. The role is based on-site in Barrow five days a week due … schedule to support critical operations. Key responsibilities Monitor, maintain, and troubleshoot Unix/Linux systems in production and development environments Apply regular patches and updates to ensure security and performance compliance Respond to alerts, incidents, and service requests, resolving technical issues within SLA Manage user accounts, permissions, and file systems Automate routine administration tasks using Bash or Python scripting More ❯

support and maintenance for Unix and Linux environments (Solaris and Red Hat), ensuring high system availability, rapid issue resolution, and compliance with security standards. You'll handle incident management, performance tuning, and patching, as well as contribute to documentation and knowledge sharing across the team. The role is based on-site in Barrow five days a week due … schedule to support critical operations. Key responsibilities Monitor, maintain, and troubleshoot Unix/Linux systems in production and development environments Apply regular patches and updates to ensure security and performance compliance Respond to alerts, incidents, and service requests, resolving technical issues within SLA Manage user accounts, permissions, and file systems Automate routine administration tasks using Bash or Python scripting More ❯