1 to 25 of 173 Permanent Performance Optimisation Jobs in England

deliver scalable, high-performing features, while mentoring a team and helping drive innovation across the platform. Role and Responsibilities: Lead the design, development, and optimisation of high-performance, cloud-based software solutions Partner with Technical Design Authority to shape system architecture, APIs, and data models Ensure secure, scalable … integration with databases, third-party APIs, and messaging services Drive performance optimisation, reliability, and robust data integrity standards Mentor developers, promote Agile best practice, and elevate engineering standards Participate in on-call rota and act as escalation point for critical incidents Skills and Experience: 5+ years’ software development ...

Developer to join our growing development team. You’ll use your expertise in modern HTML, CSS and JavaScript to build delightful, accessible and high performance user interfaces that bring our customer-facing products to life. You’ll collaborate closely with Product, UX and Back End colleagues to turn designs … driven UI using a modern framework. You’ll own the front end delivery for features end-to-end, from prototyping and accessibility reviews to performance optimisation and deployment. You’ll also contribute to shared engineering practices such as code reviews, automated testing and documentation to help the team ...

. Translate UI/UX wireframes and design systems into high-quality, reusable front-end components. Ensure cross-browser and cross-device compatibility, including performance optimisation for page load, rendering, and interactions. Integrate front-end components with APIs and back-end services, handling data fetching, error states … state management approaches (e.g. Redux/Fluxor or similar for Blazor). Solid understanding of responsive design, cross-browser quirks, and front-end performance optimisation techniques. Familiarity with RESTful APIs, JSON, and common front-end tooling (package managers, bundlers, linters). Experience using Git, DevOps version control systems ...

architectures. You will need to be comfortable working with AWS-hosted databases (such as RDS, Aurora, and DynamoDB), understanding how cloud architecture, scalability, and performance optimisation impact application design. The role also involves awareness of deployment processes, environment management, and security best practices within AWS to ensure systems … create, maintain, and implement digital solutions in Laravel, using integrated tools such as filamentphp. Ability to scale web applications and infrastructure, ensuring high performance, security, and reliability as user base and data volume grow. High-level understanding of AWS infrastructure, including AWS-hosted databases (e.g. RDS, Aurora, DynamoDB), Cloud ...

building and enhancing consumer and business applications across web and mobile. You’ll design and develop with three core principles in mind: maintainability, performance, and security. You’ll work in a collaborative, cross-functional environment where frontend engineers have real ownership and influence across the full development lifecycle. … services efficiently Participate in planning, design, development, testing, deployment and maintenance Write clean, scalable, high-quality code aligned with best practices Contribute to performance optimisation and secure coding standards Requirements Strong experience with React and/or React Native Experience with GraphQL and RESTful APIs Solid understanding ...

building scalable SaaS platforms used by thousands of customers. Our engineering teams work in collaborative, cross-functional squads with a strong emphasis on quality, performance, and continuous improvement. We operate an office-first model to encourage collaboration, knowledge sharing, and strong technical leadership within the team. … practice Integrating third-party REST and GraphQL APIs Writing robust unit and component tests Contributing to tooling, process improvement, and front-end standards Supporting performance optimisation and accessibility best practice Collaborating closely with cross-functional teams in an Agile environment What You'll Bring Strong commercial experience with ...

looking for a C++ Trading Platform Developer to join its London-based team. This is an opportunity to work at the intersection of high-performance engineering and digital asset markets, building and scaling a global trading platform that operates across dozens of exchanges worldwide. The environment combines the technical … platform spanning multiple continents, covering: Real-time market data capture Order entry and connectivity across numerous exchanges Robust networking and monitoring systems Scaling and performance optimisation of core infrastructure The tech stack is primarily C++ and Python, running on Linux across both development and production. The focus ...

continuous improvement across the Trust. Main duties of the job Lead on data and analytics delivery for Cancer, working collaboratively with analysts, developers, and performance teams. Work with the Data Engineering team to design, build, and optimise data models and pipelines for performance and scalability. Design, build … operational teams to ensure issues are corrected at source. Collaborate with clinical and corporate teams to ensure analytics products support national submissions and local performance priorities. Lead service area Data Governance Group meetings, recording and monitoring actions, risks, and issues. Share knowledge and best practice to build resilience across ...

ability to architect distributed systems A ‘no-compromise’ attitude with engineering best practices such as clean code, TDD, containerisation, security, CI/CD, scalability, performance and cost optimisation Active user of AI-assisted development tools (Claude Code, GitHub Copilot, Cursor) with demonstrable experience using structured workflows … scalable microservice architecture Proven track record developing and deploying GenAI/LLM-based systems in production Advanced understanding of context engineering, prompt construction, optimisation and evaluation techniques End-to-end implementation experience using vector databases and retrieval pipelines Experience with GitHub Actions, Docker, Kubernetes and cloud-native deployments ...

front-end and web engineers (React) across a mix of seniority levels. Own people management responsibilities including hiring, onboarding, line management, performance management, coaching, mentoring, and career development. Foster a collaborative, inclusive, and high-performance team culture focused on continuous improvement and psychological safety. Technical Leadership & Delivery Provide … modern web technologies, including JavaScript, HTML, CSS, and React-based frameworks . Strong understanding of modern front-end architecture, including state management, routing, navigation, performance optimisation, module federation, microservice architecture and accessibility standards. Experience designing and maintaining CI/CD pipelines , using version control effectively, and working within ...

mobile, and frontend teams. What You’ll Work On Designing and improving backend services that power web + mobile applications Building and maintaining high‐performance APIs and distributed microservices Solving problems around scalability, reliability, security, and automation Working with modern API protocols including GraphQL and gRPC Enhancing the platform … Building APIs for high‐scale consumer or B2B products Working with message queues like Kafka, RabbitMQ, NSQ, or Pulsar Integrating external APIs/services Performance optimisation & working under performance budgets Interest or experience in cryptocurrencies, Web3, or digital assets Open‐source contributions or tech blogs/talks ...

mathematics, and experience working in model-driven development environments. The position involves working within multidisciplinary engineering teams to translate mathematical models into robust, high-performance software implementations. The ideal candidate will be comfortable working in Linux-based environments, collaborating across modelling, software, systems, and verification functions. Responsibilities Design, develop … optimise real-time DSP algorithms in C++ within high-performance computing environments. Integrate both auto-generated and hand-crafted model-based code into larger software systems. Conduct modelling, simulation, and validation of algorithms using MATLAB, Simulink, or similar environments. Execute structured testing, benchmarking, and verification of DSP components ...

coding experience preferred) Solid background in system design, distributed systems, and cloud architectures (AWS/Azure/GCP) Passion for clean code, testing, and performance optimization Excellent communication, leadership, and decision-making skills A mindset for innovation, problem-solving, and continuous improvement Bonus Points For Experience in microservices architecture ...

integration experience Cloud hosting basics (Azure, AWS) Experience with Webhooks or event-driven APIs Familiarity with structured logging (Splunk, ELK, Application Insights) API performance optimisation & rate-limiting handling Key Responsibilities Develop and maintain web portals using ASP.NET MVC/.NET Core Design, build, and integrate REST APIs with … request flows(UI Controller API Database Response) Maintain and publish API documentation using Swagger/OpenAPI Ensure API security, reliability, and performance including: Proper error handling Retry logic Logging Timeouts CORS configuration Collaborate with database, infrastructure, and QA teams throughout release cycles Participate in code reviews and follow ...

focus on extending the stack into options trading. This is a technical role for someone who enjoys working close to the metal, solving performance problems, and contributing directly to core trading infrastructure. The Role You will work alongside other senior engineers to design and enhance high-performance trading … focus is on ultra-low latency, robustness under load, and clean, well-tested code. Key responsibilities include: Designing and building low-latency, high-performance C++ components for trading and market data Enhancing core trading infrastructure in collaboration with other VP-level engineers Driving automated testing practices ...

agile team of 5-7 mobile engineers (React Native) across a mix of seniority levels. Own people management responsibilities including hiring, onboarding, line management, performance management, coaching, mentoring, and career development. Foster a collaborative, inclusive, and high-performance team culture focused on continuous improvement and psychological safety. Technical … mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands-on software engineering background across modern mobile technologies e.g. cross platform/native development. Strong understanding of modern ...

applications. Work closely with front-end developers and UX designers to create seamless, high-quality user experiences. Troubleshoot, debug, and optimise application performance to ensure speed and reliability. Participate in code reviews, contributing your expertise and helping uphold coding standards. Support deployment tasks and collaborate in cloud-based environments … with cloud platforms (AWS, Azure, GCP). Knowledge of Docker, CI/CD pipelines, or modern JavaScript frameworks. Exposure to security best practices and performance optimisation strategies. What We Offer Competitive salary and benefits package. Hybrid working setup with flexible in-office days. A supportive, inclusive team environment ...

Python (FastAPI, Flask, Django) Building modern frontend applications using React and React Native Working with SQL and NoSQL databases, contributing to data modelling and performance optimisation Enhancing Electron-based desktop applications Building integrations with services and third‐party systems Contributing to cloud and presentation-layer architecture Working with … technologies and APIs Good knowledge of data security and handling sensitive data Experience working in Agile development teams Focus on security, reliability and performance Personal Qualities: Clear thinker who enjoys solving complex technical problems Confident communicator who performs well under pressure Collaborative team player who supports others Curious, pragmatic ...

tooling Knowledge of automated testing tools and approaches Understanding of accessibility standards (e.g., WCAG) Experience collaborating with backend teams and RESTful APIs Exposure to performance optimisation or frontend monitoring Experience deploying frontend apps or working with CI/CD Salary for this role ...

Experience with TypeScript and React Exposure to frontend design systems Experience with Docker and cloud platforms (AWS preferred) Knowledge of modern web architecture and performance optimisation A proactive, pragmatic mindset someone who takes ownership and gets things done Why apply to be a Software Engineer? Join a mission ...

Experience with TypeScript and React Exposure to frontend design systems Experience with Docker and cloud platforms (AWS preferred) Knowledge of modern web architecture and performance optimisation A proactive, pragmatic mindset — someone who takes ownership and gets things done Why apply to be a Software Engineer? Join a mission ...

high-end construction companies. Working closely with our Senior Developer and design team, you’ll collaborate on developing bold concepts into pixel-perfect, high-performance experiences. We run a modern JAMStack, headless architecture designed for performance and scale, with CI/CD pipelines for automated testing and deployment. … designs into refined, performant builds ✔ Collaborating with designers, strategists and project managers ✔ Maintaining and improving existing projects as they evolve ✔ Learning best practices around performance, security and scalability ✔ Contributing ideas - technically and creatively ✔ Develop industry-leading WordPress and Shopify websites for incredible clients. ✔ Maintain hosting environments - optimising performance ...

client is looking for an experienced ML Infrastructure Engineer to support the deployment, optimisation and scaling of advanced machine learning models in production environments. This role sits at the intersection of research and engineering, focused on ensuring models are reliably transitioned from experimentation through to large-scale deployment. … will work closely with research and platform teams to build and maintain high-performance inference systems, improve deployment processes and help drive infrastructure improvements that enable faster model iteration and release cycles. This is a strong opportunity to work on technically complex challenges within a fast-moving and highly ...

ensuring the brand continues to lead within their niche technology space. It’s ideal for a hands-on, data-driven marketer who enjoys performance ownership in a high-growth B2B SaaS environment. Responsibilities include: Develop and execute a data-driven digital marketing and GTM strategy Build and optimise … approach to generate high-quality MQLs Own marketing KPIs including MQLs, conversion rates, CAC, LTV, and ROI Lead marketing analytics, reporting, and performance optimisation Manage marketing automation and attribution tools Oversee digital performance across SEO, PPC, paid social, email, and CRO Drive A/B testing ...

Data Factory). Experience designing and managing cloud data platforms (Snowflake essential; AWS/Azure/GCP desirable). Solid data modelling knowledge and performance optimisation skills. Awareness of data governance, security, and regulatory compliance . Ability to work closely with technical and business teams to deliver impactful ...