26 to 50 of 71 Performance Optimisation Jobs in the North West

experience with React. Confident in HTML, CSS, JavaScript, PHP, and WordPress development. Comfortable with REST APIs, Git/GitHub, and third-party integrations. Knowledgeable about accessibility, responsive design, and performance optimisation. Familiar with backend WordPress development, queries, and APIs. Experienced with Git workflows, SQL, and managing multiple branches. Skilled in design tools like Figma or Adobe Creative Suite. Organised More ❯

accessible, and high-performing site in Webflow, translating designs from Figma into polished web experiences. You’ll manage Webflow’s CMS, implement animations and interactions, optimise for SEO and performance, and collaborate closely with brand and marketing teams to ensure a seamless and engaging digital journey for users. If you’re someone who thrives in a creative yet structured … concepts to life Working knowledge of HTML, CSS, and JavaScript for custom tweaks and integrations Understanding of UX/UI best practices, accessibility, and responsive design Awareness of SEO, performance optimisation, and API integrations Excellent organisation and time management skills, with the ability to balance multiple projects Experience within a regulated or financial services environment would be beneficial More ❯

Testing Library Advanced version control using Git. Working with third party REST & GraphQL API's CSS (We use Tailwind) Desirable: Component library design using Storybook. Experience using Cloudflare workers. Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end More ❯

Testing Library Advanced version control using Git. Working with third party REST & GraphQL API's CSS (We use Tailwind) Desirable: Component library design using Storybook. Experience using Cloudflare workers. Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end More ❯

Testing Library Advanced version control using Git. Working with third party REST & GraphQL API's CSS (We use Tailwind) Desirable: Component library design using Storybook. Experience using Cloudflare workers. Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end More ❯

Testing Library Advanced version control using Git. Working with third party REST & GraphQL API's CSS (We use Tailwind) Desirable: Component library design using Storybook. Experience using Cloudflare workers. Performance optimisation experience (code-splitting, caching, load testing) Well-versed in implementing good practice with regards to accessibility (Keyboard support, screen readers, form usability) Knowledge of various front-end More ❯

purpose, and people. A little about you 5+ years of experience in software development, especially with API-first backends and ReactJS frontends. Proven track record in building scalable, high-performance web applications. Strong experience with C#, ASP.NET, .NET frameworks, ReactJS, Node.js, and SQL Server. Familiarity with Docker, Agile/Scrum environments, and cross-functional collaboration. Expert in OOP, design … software using our tech stack: C#, ASP.NET, ReactJS, Node.js, and SQL Server. Lead architectural discussions and influence technical direction. Apply best practices including SOLID principles and design patterns. Optimize performance for scalability and reliability. Conduct code reviews and uphold coding standards. Mentor junior engineers and promote knowledge sharing. Collaborate with UX/UI, QA, and DevOps teams to deliver … learning-focused team culture. Facilitate workshops and knowledge-sharing sessions. Quality Assurance Advocate for robust testing practices (unit, integration, E2E). Collaborate with QA to ensure test coverage and performance optimization. Uphold security and reliability standards. Collaboration and Communication Work with designers to implement accessible, user-friendly interfaces. Ensure seamless integration between front-end and back-end components. Communicate More ❯

WordPress websites using Bricks Theme Builder Implement dynamic functionality with Advanced Custom Fields (ACF) Write custom PHP functions and integrate third-party APIs Design responsive landing pages optimised for performance and conversions Collaborate with designers, marketers, and content creators Troubleshoot and resolve technical issues across themes and plugins Optimise websites for speed, SEO, and mobile responsiveness Skills & Experience Proven … and ACF Proficiency in HTML5, CSS3, JavaScript/jQuery, and PHP Experience with custom PHP functions and API integrations Understanding of responsive design and cross-browser compatibility SEO and performance optimisation skills Bonus: Familiarity with Figma, Adobe XD, Git, and other page builders (Elementor, Oxygen) Whats on Offer? Competitive salary Hybrid working (3 days office/2 days More ❯

pd, Outside IR35 | 12-months Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer, Contract | Python (Django), JavaScript (React More ❯

pd, Outside IR35 | 12-months Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer, Contract | Python (Django), JavaScript (React More ❯

pd, Outside IR35 | 12-months Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer, Contract | Python (Django), JavaScript (React More ❯

pd, Outside IR35 | 12-months Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer, Contract | Python (Django), JavaScript (React More ❯

pd, Outside IR35 | 12-months Contract Length Designing and building robust backend services across Python and Django Collaborating with product and platform teams to scale critical infrastructure Contributing to performance optimisation, secure coding, and clean architecture decisions Bringing in best practices across multiple programming paradigms and languages Core Skills for the Backend Engineer, Contract | Python (Django), JavaScript (React More ❯

governance bodies and lead implementation alongside cross-functional teams. Produce technical artefacts including high/low-level designs, risk documentation, and options papers. Champion best practices in cloud security, performance optimisation, and resilience. Contribute to automation, infrastructure as code, and continuous delivery pipelines. Create an environment that supports innovation, autonomy, and personal development across the team. Promote equality More ❯

Geneva application and AGA maintenance releases.* Migrate legacy reports to RDL format where applicable.* Troubleshoot and resolve accounting data issues within the Geneva platform.* Assist in system administration and performance optimization of Geneva environments.* Document technical specifications and maintain version control of report scripts. Required Skills & Qualifications: * 2+ years of experience with Advent Geneva RSL development.* Strong understanding of More ❯

applications. Collaborate with hardware and AI teams to integrate models and algorithms onto embedded platforms. Develop and maintain software documentation, including specifications and test plans. Support debugging, profiling, and performance optimization of embedded systems. Contribute to validation and deployment processes for real-world use cases. Qualifications Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Science, or a related More ❯

applications. Collaborate with hardware and AI teams to integrate models and algorithms onto embedded platforms. Develop and maintain software documentation, including specifications and test plans. Support debugging, profiling, and performance optimization of embedded systems. Contribute to validation and deployment processes for real-world use cases. Qualifications Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Science, or a related More ❯

applications. Collaborate with hardware and AI teams to integrate models and algorithms onto embedded platforms. Develop and maintain software documentation, including specifications and test plans. Support debugging, profiling, and performance optimization of embedded systems. Contribute to validation and deployment processes for real-world use cases. Qualifications Bachelor’s degree in Computer Engineering, Electrical Engineering, Computer Science, or a related More ❯

Geneva application and AGA maintenance releases. Migrate legacy reports to RDL format where applicable. Troubleshoot and resolve accounting data issues within the Geneva platform. Assist in system administration and performance optimization of Geneva environments. Document technical specifications and maintain version control of report scripts. Required Skills & Qualifications: 2+ years of experience with Advent Geneva RSL development. Strong understanding of More ❯

Geneva application and AGA maintenance releases. Migrate legacy reports to RDL format where applicable. Troubleshoot and resolve accounting data issues within the Geneva platform. Assist in system administration and performance optimization of Geneva environments. Document technical specifications and maintain version control of report scripts. Required Skills & Qualifications: 2+ years of experience with Advent Geneva RSL development. Strong understanding of More ❯

Geneva application and AGA maintenance releases. Migrate legacy reports to RDL format where applicable. Troubleshoot and resolve accounting data issues within the Geneva platform. Assist in system administration and performance optimization of Geneva environments. Document technical specifications and maintain version control of report scripts. Required Skills & Qualifications: 2+ years of experience with Advent Geneva RSL development. Strong understanding of More ❯

into their engineering team. This role can be remote or hybrid with some office time in Warrington. You'll be working closely with backend teams to develop sleek, high-performance user interfaces using modern frontend tooling. This is a great opportunity to join a well-backed company with a real engineering culture and strong product vision. Key Skills & Experience … TypeScript Familiarity with Vite, Next.js, or other modern build tools Comfortable with component libraries and design systems Proficient in testing frameworks (e.g. Jest, React Testing Library) Good understanding of performance optimisation and accessibility best practices The ideal candidate will be proactive, collaborative, and keen to influence both tech and product direction. If you're looking for a high More ❯

drive their mobile app experience to the next level. 💼 The Role As a React Native Technical Lead , you’ll take ownership of their mobile app development — from architecture and performance to delivery and deployment. This is a fully hands-on position where you’ll still be coding daily while leading by example, mentoring engineers, and setting the technical direction … emerging trends in mobile and EdTech technology 💡 What They’re Looking For Proven experience building and delivering production-grade React Native applications Strong understanding of TypeScript , React , and mobile performance optimisation Experience integrating APIs, CI/CD pipelines, and app store deployments Ability to make architectural decisions and lead technical discussions Passion for education, user experience, and clean More ❯

drive their mobile app experience to the next level. 💼 The Role As a React Native Technical Lead , you’ll take ownership of their mobile app development — from architecture and performance to delivery and deployment. This is a fully hands-on position where you’ll still be coding daily while leading by example, mentoring engineers, and setting the technical direction … emerging trends in mobile and EdTech technology 💡 What They’re Looking For Proven experience building and delivering production-grade React Native applications Strong understanding of TypeScript , React , and mobile performance optimisation Experience integrating APIs, CI/CD pipelines, and app store deployments Ability to make architectural decisions and lead technical discussions Passion for education, user experience, and clean More ❯

drive their mobile app experience to the next level. 💼 The Role As a React Native Technical Lead , you’ll take ownership of their mobile app development — from architecture and performance to delivery and deployment. This is a fully hands-on position where you’ll still be coding daily while leading by example, mentoring engineers, and setting the technical direction … emerging trends in mobile and EdTech technology 💡 What They’re Looking For Proven experience building and delivering production-grade React Native applications Strong understanding of TypeScript , React , and mobile performance optimisation Experience integrating APIs, CI/CD pipelines, and app store deployments Ability to make architectural decisions and lead technical discussions Passion for education, user experience, and clean More ❯