1 to 25 of 281 Permanent Performance Optimisation Jobs in the UK excluding London

experience is beneficial, this is a frontend-first role , focusing primarily on responsive website development, headless CMS integration (ButterCMS, Contentful, etc.), WordPress customisation, and performance optimisation . Position Overview As a Frontend Developer , you will be responsible for building, optimising, and maintaining websites that elevate Phantom Hire’s … to ensure every website is fast, scalable, and visually engaging while following the latest front-end technologies and best practices. Key Responsibilities Develop high-performance, mobile-first websites using modern front-end technologies. Create engaging, SEO-optimised, and accessible website experiences with an emphasis on speed and user experience. … ES6+) Modern JavaScript frameworks (React, Vue, or similar) Headless CMS solutions (ButterCMS, Contentful, Strapi, or similar) WordPress theme customisation & plugin integration Expertise in website performance optimisation, Core Web Vitals, and SEO-friendly development . Experience with responsive design frameworks (Tailwind, Bootstrap, SCSS, Styled Components, etc.) . Knowledge of More ❯

Engineer, you will be at the core of our technology team, tackling complex challenges in a high-traffic environment. Your focus will be on performance optimisation, system resilience, and security. You will collaborate with engineers, influence architecture decisions, and advocate for the best tools and methodologies to drive … efficiency and reliability. Key Responsibilities: Optimise and scale our global eCommerce platform to handle high-volume traffic. Proactively identify and resolve system bottlenecks, improving performance and efficiency. Implement and manage Infrastructure as Code (IaC) using Terraform. Enhance system resilience and prevent incidents before they occur. Work with AWS, focusing … on Edge computing and CDN edge optimisation, particularly AWS CloudFront. Ensure security best practices in eCommerce applications. Collaborate with cross-functional teams to drive architectural improvements and technical innovation. Promote automated deployments and continuous delivery practices. We are looking for: A well-organised, self-motivated problem solver with a More ❯

UK. This involves working closely with Heads of Technology, Software Architects, and team leads, so strong stakeholder management skills are crucial. Duties Scaling and performance optimisation of web front-end and interaction with API layers Resolving high-level, complex software challenges and optimising system performance Implementing software … web caching tools and techniques, e.g., Redis Understanding of fundamental software development best practices, architectures, and patterns Awareness of modern deployment methodologies Expertise in performance optimisation of web technologies Willingness to challenge processes and existing ways of working, owning your domain and pushing for innovation Additional experience in More ❯

user experiences, Collaborate with cross-functional teams, including product managers, designers, and backend engineers, to integrate user interfaces with backend services and APIs, Drive performance optimisation initiatives by implementing best practices in front-end development, including code splitting, lazy loading, and efficient state management, Mentor and guide junior … deployment (CI/CD) pipelines, In-depth understanding of web accessibility standards and best practices to ensure inclusive user experiences, Proven track record of performance optimisation techniques, including code splitting, lazy loading, and minimising render times, Strong leadership skills with experience in mentoring and guiding junior developers. Benefits More ❯

with up-to-date knowledge of best practices within Databricks data engineering, specifically with code version management (GIT/DevOps integration), Unity Catalog and performance optimisation in Databricks transformation workloads. Working with multi vendors on AI capability. C£Market rate - inside IR35 Fully remote opportunity 6 Months contract … to succeed Databricks best practice Extensive Databricks development experience Up-to-date knowledge of best practices in Databricks data engineering Databricks Unity Catalog and performance optimisation Code version management (Git/DevOps integration) What you need to do now If you're interested in this role, click 'apply More ❯

Sr. OS Performance Expert Your Role: As a Senior OS Performance Expert, you will play a crucial role in optimizing the performance of our brand-new mobile operating system. Your responsibilities include: Performance Optimization : Leverage your extensive experience to enhance system architecture, boost performance, and … operating system principles to innovate and drive system improvements. Cutting-edge Innovation : Collaborate with top-tier teams to push the boundaries of mobile OS performance, contributing to the mission of delivering exceptional user experiences. Main Responsibilities : Enhancing OS System Performance: Conduct in-depth research on runtime resource management … policies. Investigate kernel task scheduling and SOC frequency modulation mechanisms. Analyze and collaborate between software/hardware co-design. Identify and address Operating system performance bottlenecks. Design and implement solutions to ensure smooth and superior product performance. Researching OS Application Architecture: Build the competitiveness of key technologies in OS More ❯

and our content-rich B2B platform (s). You’ll work at the heart of our digital operations, optimising user journeys, enhancing on-site performance, and collaborating with internal teams to deliver impactful content and seamless experiences Key Responsibilities: E-commerce Website & Content Management • Manage product listings, descriptions, pricing … content strategies to improve navigation, user experience, and conversion rates. • Maintain inventory accuracy and coordinate with teams to ensure product availability. Landing Page & UX Optimisation • Develop and optimise landing pages for promotions, product launches, and marketing campaigns. • Enhance site structure and user journeys to drive engagement and online sales. … Conduct A/B testing to optimise layouts, calls-to-action, and product presentation. SEO & Performance Optimisation • Implement on-page SEO best practices, including keyword optimisation, metadata, and image alt text. • Work on technical SEO improvements, ensuring site speed, mobile-friendliness, and proper indexing. • Use Google Analytics More ❯

administrative overhead. Optimises workforce planning and scheduling to meet operational needs. Enhances Talent Management capabilities to align learning pathways with business objectives for improved performance and growth. Seamlessly integrates Payroll processes with third-party applications, ensuring full compliance with regulatory requirements. The successful candidate will join the Oracle HCM … unit and integration testing of OIC solutions to ensure high-quality code and efficient data flows. Problem-Solving: Troubleshoot and resolve integration issues, including performance and data-related problems. Performance Optimisation : Monitor and optimise the performance of OIC integrations, focusing on throughput, latency, and scalability. Mentoring More ❯

Unity Technology and Optimisation Programmer Please note: This role is 3 days a week on site in our gaming studio in Bournemouth, but 2 days is also okay per week. We're on a mission to be an everyday entertainment platform for everyone! Partnered with some of the world … of something massive. About The Role - Sporty Games UK is looking for a Unity developer with in-depth knowledge and experience in optimising game performance across multiple platforms, including mobile. - The ideal candidate will approach tasks with a focus on performance optimisation from the start. They must … development, working in a team on any of the stated platforms - In-depth knowledge of the C# language - Experience using Unity's profiler and performance analysis tools - Experience using Visual Studio for development, testing and debugging - The desire to learn as new technologies are released, and an ability to More ❯

of front-end updates and enhancements for our websites. You will work closely with cross-functional teams to deliver visually appealing, highly functional, and performance-optimised platforms that delight our users. Key Responsibilities Front-End Development: Implement new features, components, and layouts using WordPress, HTML5, CSS3, and JavaScript. Content … Update and maintain website content in alignment with branding and SEO strategies. Responsive Design: Ensure a flawless user experience across all devices and browsers. Performance Optimisation: Optimise website performance, including loading speed, code structure, and accessibility. Collaboration: Work with team members to enhance various aspects of UX … customising WordPress themes or resolving back-end issues. Knowledge of version control systems (e.g., Git). Understanding of Web Core Vitals and Google’s performance metrics. Ability to develop custom WordPress themes and child themes. Qualifications and Experience Proven track record as a WordPress developer, with a portfolio demonstrating More ❯

CI/CD tools such as Azure DevOps, GitHub Actions, or Jenkins, and scripting with PowerShell or Bash. Strong skills in debugging, testing, and performance optimisation. Excellent communication and stakeholder engagement skills. Desirable Skills Familiarity with integration platforms such as MuleSoft, Dell Boomi, or Azure Logic Apps. Knowledge of More ❯

to deployment. Key tasks Develop, maintain and manage WordPress sites hosted in Microsoft Azure Integrate with third-party APIs to extend site functionality Ensure performance, security and accessibility best practices are met Take the lead in troubleshooting and resolving technical issues Work with our UX and Customer Applications Product … and deployment workflows Proven track record of independently delivering solutions and features Comfortable managing your own time and communicating clearly Good understanding of website performance optimisation and website security Desirable Experience working with Microsoft Azure Familiarity with front-end frameworks (e.g. Angular, React) Familiarity with Azure DevOps for More ❯

team, responsible for enhancing, supporting, and maintaining a highly available, secure, and scalable IT infrastructure. They will play a vital role in system upgrades, performance optimisation, and ensuring robust security, while collaborating closely with colleagues to drive operational excellence and align IT services with business needs. Role Requirements … operational tasks within the IT team, ensuring alignment with business objectives Manage, support, and optimise Windows Server and Linux environments, ensuring stability, security and performance Support and maintain virtualisation (VMware) and cloud services (AWS & Azure), ensuring stability, scalability & security Maintain and enhance networking infrastructure across on-premises, data centre … and cloud environments Proactively monitor system performance, troubleshoot issues, and implement preventative measures to maintain high availability Assist in managing system security, patching, updates, backups, and disaster recovery procedures Work collaboratively with cross-functional teams to align IT operations with business needs and objectives Ensure IT security best practices More ❯

in OpenLink core modules such as Deal Capture, Risk Management, Settlement, and Accounting. Strong understanding of precious metals Experience with technical customization, scripting, and performance optimization within OpenLink. Expertise in integrating OpenLink with other systems using Java, .NET, or REST/SOAP APIs. Strong knowledge of databases (Oracle, SQL More ❯

Azure, or equivalent). Database & API Management – Design efficient PostgreSQL and MongoDB schemas and develop secure RESTful/GraphQL APIs for seamless data integration. Performance Optimisation. System Architecture & Scalability. Code Review & Quality Assurance. Security Best Practices. Skills and Experience: Essential: Proficiency in JavaScript/TypeScript, React, Node.js, PostgreSQL, and More ❯

Essential Requirements for the Role: Expertise in C# and .NET, with experience in scalable solution architecture. Strong SQL skills with SQL Server, focused on performance optimisation. Proven leadership in mentoring and guiding Agile teams. Strategic mindset, with a keen eye on emerging tech, including AI. Passion for continuous learning More ❯

to build a Quality Management System that aligns with regulatory requirements whilst preserving our engineering culture Develop core architecture improvements for system reliability, database performance, API security, and distributed system design Mentor the team on security and quality best practices, helping to build a culture where compliance is a … Experience with containerisation and orchestration (Docker, Kubernetes) Experience with Python for tooling or data processing Background in manufacturing or laboratory automation Experience with database performance optimisation and data integrity enforcement Why You'll Love Working Here Impact : Your work will directly enable the production of cell therapies that More ❯

platform . You'll lead a small, elite team of developers, working at the intersection of IT and the trading business to deliver high-performance, real-time trading solutions. Key Responsibilities: Serve as the technical lead for a core team of 3-6 developers, providing mentorship, leadership, and technical … direction. Drive the design and development of low-latency, high-performance algorithmic and electronic trading systems. Collaborate directly with trading desks, business stakeholders, and IT teams to translate business requirements into functional, scalable solutions. Build components such as order placement, routing, pricing engines, exchange connectivity, and market data ingestion … productivity. Technical Requirements: Expert-level C++ development experience (10+ years) with strong grasp of modern C++ standards, object-oriented design, data structures, and algorithmic performance optimisation . Proven track record building real-time , low-latency , multi-threaded trading systems . Experience with exchange connectivity protocols (e.g., ICE, CME More ❯

correct approach and to the standards defined. Requirements Job Duties Lead the design, development, and maintenance of software applications ensuring quality, efficiency and maximising performance and minimising technical debt. Feature development and evaluation of the tooling processes both in development and deployment alongside the Platform Engineering team. Write clean … An interest in troubleshooting and problem-solving Participation in releases and/or out-of-hours on-call availability as needed Desirable Expertise in performance optimisation Experience in the gaming industry is a significant advantage Working with, and supporting, remote developers (working on the same product) Working with More ❯

team of engineers Align DevOps capabilities with the wider business Champion DevEx, reliability, and security Embed operational excellence and incident response Promote observability and performance optimisation Lead DevOps Engineer Requirements Proven technical and some leader/mentoring experience Cloud-native expertise (any cloud provider is fine: GCP, AWS More ❯

connectivity solutions using MuleSoft Anypoint Platform. • Create and maintain RAML and OpenAPI specifications for RESTful APIs. • Ensure best practices in API security, governance, and performance optimization. • Perform unit testing and integration testing to validate API functionality and reliability. • Troubleshoot and resolve technical issues in integration services. • Work with CI More ❯

ensure that our websites are fast, responsive, and high-performing. Key Responsibilities: Lead the full-stack development of complex websites, ensuring optimal user experience, performance, and scalability. Design and implement website architecture, functionality, and integrations with other platforms. Collaborate with design and marketing teams to ensure the website aligns … with brand requirements and provides a user-friendly experience. Optimise website speed and performance for various devices and browsers. Troubleshoot and resolve technical issues, ensuring seamless website functionality. Stay updated with the latest trends and best practices in website development and digital technologies. Regularly maintain and update websites to … knowledge of website architecture, coding practices, and best development methodologies. Strong experience with responsive design and ensuring websites are mobile-friendly. Experience with website performance optimisation and debugging. Strong problem-solving skills and the ability to adapt to new challenges. Excellent communication skills and the ability to work More ❯

public cloud. What you'll be doing: Effectively evolve, enhance, and modernise large-scale systems to enable rapid adaptability and continuous improvement. Improve the performance, reliability and scalability of our .NET systems. Develop and drive automation for deployment, monitoring, and scaling of infrastructure. Build tools and processes to enable …/CD). Make data guided decisions that impact core business metrics and processes. Solid understanding of platform and reliability engineering approaches, including observability, performance optimisation, capturing analytics and security best practices. Drive the adoption of new technologies like Go and Python. Facilitate collaboration between teams and build … Here are some of the benefits you can look forward to: 10% discretionary yearly bonus and yearly pay reviews (based on RVU and personal performance). A hybrid working approach with 2 in-office days per week and up to 30 days per year to "work from anywhere." Employer More ❯

ll be doing: Public Cloud Infrastructure Management which involves provisioning, configuration and maintaining various Cloud resources to ensure scalability, reliability and security. Monitoring and Performance Optimisation by implementing monitoring solutions to track performance and identify areas for optimisation to enhance user experience and automate improvements where More ❯

the correct approach and to the standards defined. Job Duties Lead the design, development, and maintenance of software applications ensuring quality, efficiency and maximising performance and minimising technical debt. Feature development and evaluation of the tooling processes both in development and deployment alongside the Platform Engineering team. Write clean … team An interest in troubleshooting and problem-solving Participation in releases and/or out-of-hours on-call availability as needed Expertise in performance optimisation Experience in the gaming industry is a significant advantage Working with, and supporting, remote developers (working on the same product) Working with More ❯