1 to 25 of 102 Remote Performance Optimisation Jobs in London

systems documentation to support knowledge sharing and future scalability. About you: Proven experience in developing sophisticated, scalable web applications using Java , with a deep understanding of enterprise-level architecture, performance optimisation, and maintainable code standards. Agile team player with experience contributing to sprint planning, daily stand-ups, code reviews, and retrospectives, fostering continuous improvement. A strategic problem-solver … technical challenges and driving innovative solutions. Extensive knowledge in front-end development, utilising JSP, JavaScript/TypeScript, and frameworks like React, with a focus on designing intuitive, responsive, high-performance user interfaces. Robust knowledge of the Spring ecosystem, including Spring Boot , Spring MVC , and Spring Security , to build secure and efficient backend services. Proficient in designing, implementing, and optimising More ❯

a leading managed services provider (MSP) and technology partner, specialising in enterprise IT solutions and infrastructure. They are a partner of major vendors such as Broadcom and deliver high-performance, complex systems to large-scale clients across industries. We are seeking an AVI Architect with strong DevOps and application tuning expertise. Operating at an architect level, this role focuses … on supporting tuning activities for complex, high-volume applications and driving performance improvements for the client's most demanding systems. Key Responsibilities: Lead tuning and performance optimisation for complex applications with high function point (FP) volumes. Identify and resolve application performance bottlenecks. Support move to block initiatives, ensuring high-demand applications perform efficiently. Collaborate with the … Cyber Tuning Team to define and implement best practices. Provide architectural-level guidance on DevOps processes and tuning strategies. Document tuning activities, optimisations, and performance improvements. Essential Skills & Experience: Proven experience as a DevOps or Tuning Engineer at an architect level. Expertise in application performance tuning for complex, high-volume systems. Experience in identifying and resolving performance More ❯

reviewed until WC 3rd November We’re partnering with a global investment bank to hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high … Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance optimisation , and system reliability . Demonstrable front-end engineering experience using JavaScript, TypeScript, Angular or React Familiarity with containerisation (Kubernetes, Docker) and modern DevOps practices . Experience in More ❯

reviewed until WC 3rd November We’re partnering with a global investment bank to hire an exceptional Software Engineer to join a flagship team delivering a next-generation, high-performance derivatives risk platform . This is a mission-critical front-office role working on real-time distributed systems with exceptional technical standards. You’ll be part of a high … Python or Java , ideally with working knowledge of another. Rust very desirable Proven experience designing and developing complex, distributed, real-time systems . Deep understanding of software architecture, concurrency, performance optimisation , and system reliability . Demonstrable front-end engineering experience using JavaScript, TypeScript, Angular or React Familiarity with containerisation (Kubernetes, Docker) and modern DevOps practices . Experience in More ❯

Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices to enhance performance and scalability. Collaborate with internal teams and vendors to deliver digital products that push boundaries. Optimise site performance - improving response times, query efficiency, and Core Web Vitals. Troubleshoot … of WordPress + Gutenberg Strong skills in PHP, JS, React, HTML, CSS Experience building custom Gutenberg blocks , APIs, and feeds Solid knowledge of Git , Agile , and JIRA Understanding of performance optimisation , caching , and Core Web Vitals Confident communicator and collaborator in distributed teams Nice to Have Experience with WordPress VIP or PugPig Exposure to AWS (S3, Lambda, EC2 More ❯

Full Stack Developer, you'll: Lead the maintenance and feature development of enterprise-level WordPress sites across multiple brands. Build and maintain shared plugins and reusable microservices to enhance performance and scalability. Collaborate with internal teams and vendors to deliver digital products that push boundaries. Optimise site performance - improving response times, query efficiency, and Core Web Vitals. Troubleshoot … of WordPress + Gutenberg Strong skills in PHP, JS, React, HTML, CSS Experience building custom Gutenberg blocks , APIs, and feeds Solid knowledge of Git , Agile , and JIRA Understanding of performance optimisation , caching , and Core Web Vitals Confident communicator and collaborator in distributed teams Nice to Have Experience with WordPress VIP or PugPig Exposure to AWS (S3, Lambda, EC2 More ❯

commercial experience developing applications using C#, .NET Core, and MVC architecture. Strong front-end skills in Angular and/or Blazor . Advanced SQL Server knowledge (expert-level queries, performance optimisation). Experience with RabbitMQ or similar messaging technologies. Exposure to Azure , Kubernetes (AKS) , and (CI/CD) DevOps pipelines. Understanding of microservices and distributed systems. Excellent problem … consistently and on time. Demonstrating ownership and initiative - taking projects from concept to completion. Contributing to architectural decisions and mentoring within the team. Helping modernise systems while improving throughput, performance, and reliability. 🤝 Why Join SEG Hybrid working, with collaboration being one of our values, we expect presence in our well-situated London Holborn office one day per week, to More ❯

of high-performing web applications using Java, Spring Boot, and modern front-end frameworks. This is a great opportunity to work on large-scale, cloud-hosted systems that require performance, scalability, and innovation. Key Responsibilities: Front-End Development Develop responsive, interactive user interfaces using HTML5, CSS3, and JavaScript. Build modern UI components using React, Angular, or Vue.js. Back-End … APIs. Solid understanding of microservices architecture. Knowledge of frontend frameworks (React/Angular). Familiarity with CI/CD pipelines, Docker, and Kubernetes. Strong understanding of application security and performance optimisation. Experience with JUnit, Mockito , or other testing frameworks. Good communication and collaboration skills. If you are interested or would like to know more, please email jonathan.la@focusonsap.org with More ❯

What you’ll do: Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js. Write clean, scalable, and maintainable code while driving performance and reliability. Collaborate with product, design, and engineering teams to deliver user-focused, accessible features. Contribute to architectural discussions and help shape the evolution of our tech stack. Mentor … and collaboration skills in English. Proven ability to work independently while contributing effectively to team goals. Experience working successfully in hybrid or remote development environments. Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re-renders). Experience with Git, version control best practices, and CI/CD pipelines. We’ll be lucky if you More ❯

What you’ll do: Design and build sophisticated React applications integrating with Microsoft Word, M365, and other Office products using Office.js. Write clean, scalable, and maintainable code while driving performance and reliability. Collaborate with product, design, and engineering teams to deliver user-focused, accessible features. Contribute to architectural discussions and help shape the evolution of our tech stack. Mentor … and collaboration skills in English. Proven ability to work independently while contributing effectively to team goals. Experience working successfully in hybrid or remote development environments. Solid understanding of React performance optimisation (e.g. memoisation, code splitting, avoiding unnecessary re-renders). Experience with Git, version control best practices, and CI/CD pipelines. We’ll be lucky if you More ❯

a forward-thinking global firm that’s redefining the future of finance through technology. They are looking for a Front-End React Engineer who’s passionate about clean design, performance, and scalability, someone who thrives on combining creativity with technical precision. The Opportunity You’ll join a dynamic development team, responsible for building the tools, platforms, and applications that … Apollo Client , and GraphQL/REST APIs . Experience working in a cloud-native environment ( AWS or Azure ). Familiarity with data streaming (WebSockets, chunked responses) and front-end performance optimisation . Strong understanding of testing frameworks (unit, integration, E2E) - Playwright experience a plus. Bonus points for knowledge of Material UI or other design systems, and data visualisation More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

implementation of ML pipelines, APIs, and data integration workflows. Operational Excellence: Contribute to defining reusable development patterns, enforcing coding standards, and implementing MLOps best practices that support version control, performance optimisation, and maintainability. Cross-Disciplinary Collaboration: Work side-by-side with data scientists, product managers, platform engineers, and QA teams to align on technical requirements, delivery timelines, and More ❯

Role You’ll be working across the full stack, developing and maintaining scalable web applications that power a global interactive learning platform. Expect a mix of new feature development, performance optimisation, and experimentation with new ideas. End-to-end development in C#/.NET/JavaScript Collaborate directly with product, design and research teams Build and improve interactive … web templates and tools Optimise performance for millions of global users Work remotely as part of a UK-based team that’s expanding steadily Tech Stack C#, .NET (Core and 8), ASP.NET MVC, JavaScript, SQL Server, HTML5, CSS, Azure, Canvas API, WebAudio API What You’ll Need Strong commercial experience in C# and JavaScript Solid understanding of modern web More ❯

Role You’ll be working across the full stack, developing and maintaining scalable web applications that power a global interactive learning platform. Expect a mix of new feature development, performance optimisation, and experimentation with new ideas. End-to-end development in C#/.NET/JavaScript Collaborate directly with product, design and research teams Build and improve interactive … web templates and tools Optimise performance for millions of global users Work remotely as part of a UK-based team that’s expanding steadily Tech Stack C#, .NET (Core and 8), ASP.NET MVC, JavaScript, SQL Server, HTML5, CSS, Azure, Canvas API, WebAudio API What You’ll Need Strong commercial experience in C# and JavaScript Solid understanding of modern web More ❯

CloudWatch AWS SDKs, Boto3, and serverless architecture patterns Strong programming skills in Python and Apache Spark Proven experience in Snowflake data engineering, including: Snowflake SQL, Snowpipe, Streams & Tasks, and performance optimization Integration with AWS services and orchestration tools Expertise in data integration patterns, ETL/ELT, and data pipeline orchestration Experience with data quality frameworks, metadata management, and data More ❯

CloudWatch AWS SDKs, Boto3, and serverless architecture patterns Strong programming skills in Python and Apache Spark Proven experience in Snowflake data engineering, including: Snowflake SQL, Snowpipe, Streams & Tasks, and performance optimization Integration with AWS services and orchestration tools Expertise in data integration patterns, ETL/ELT, and data pipeline orchestration Experience with data quality frameworks, metadata management, and data More ❯

improve farm economics, productivity, and environmental impact . Key Responsibilities Lead technical strategy and oversee architecture for scalable, data-driven systems. Remain actively hands-on , designing and developing high-performance C#/.NET back-end systems . Mentor and guide a growing team of developers — setting technical standards and driving best practices. Oversee end-to-end solution delivery, ensuring … performance, security, and maintainability. Collaborate cross-functionally with data scientists, agronomists, and stakeholders to shape product direction. Own cloud infrastructure strategy and implementation on Microsoft Azure . Lead innovation in sustainability-focused agricultural technology and analytics . Contribute to recruitment and technical assessment (including coding challenge design and review). Candidate Assessment Process Our selection process includes a LeetCode … style technical challenge to evaluate: Algorithmic problem-solving Data structures and computational efficiency Code quality and optimisation under time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history More ❯

improve farm economics, productivity, and environmental impact . Key Responsibilities Lead technical strategy and oversee architecture for scalable, data-driven systems. Remain actively hands-on , designing and developing high-performance C#/.NET back-end systems . Mentor and guide a growing team of developers — setting technical standards and driving best practices. Oversee end-to-end solution delivery, ensuring … performance, security, and maintainability. Collaborate cross-functionally with data scientists, agronomists, and stakeholders to shape product direction. Own cloud infrastructure strategy and implementation on Microsoft Azure . Lead innovation in sustainability-focused agricultural technology and analytics . Contribute to recruitment and technical assessment (including coding challenge design and review). Candidate Assessment Process Our selection process includes a LeetCode … style technical challenge to evaluate: Algorithmic problem-solving Data structures and computational efficiency Code quality and optimisation under time constraints Ideal Candidate Profile Academic and Professional Background Degree/Masters/PhD in Computer Science, Data Science, or a related discipline Proven experience as a Back-End Developer/Engineering Lead/CTO in data-heavy environments Demonstrable history More ❯

that help venues create seamless, data-driven guest experiences from the ground up. What you'll be doing: Set the technical vision and architectural direction for frontend systems, ensuring performance, scalability, and maintainability across complex products. Lead design and delivery of modern, component-based web applications built with TypeScript, React, and Redux, integrating seamlessly with cloud-based APIs and … experience. 7+ years in frontend software development, including experience in a lead or principal engineering capacity. Deep expertise in React, TypeScript, and modern frontend architecture (state management, component design, performance optimisation). Strong understanding of cloud-based infrastructures (GCP, AWS, or Azure) and how frontend systems integrate with distributed backends. Proven ability to influence technical direction and cross More ❯

services organisation to recruit an Amazon CX Senior Engineer on a contract basis. Hybrid working - London based. Role The Amazon CX Senior Engineer will lead the design, implementation, and optimisation of complex full-stack Amazon Connect solutions. Lead technical design and architecture for advanced Amazon Connect implementations. Develop sophisticated contact flows incorporating third-party integrations, SSO, and complex customer … . Advanced experience with infrastructure-as-code (CDK or Terraform). Experience designing integration patterns with external systems. CI/CD pipeline implementation for contact centre solutions. Knowledge of performance optimisation, scaling strategies, and security architecture for contact centres. Experience with custom development to extend Amazon Connect functionality. Excellent communication skills, able to work collaboratively and lead technical More ❯

Up to c. £225k Comp Package | Hybrid Working - 3 Days in Office] Role Overview We’re representing a global trading and digital assets firm at the forefront of high-performance technology and infrastructure innovation. The business is seeking a Site Reliability & Infrastructure Engineer to help design, automate, and scale the systems that underpin its global trading platforms. This role … AWS) and on-prem environments Implement automation across the stack using Infrastructure-as-Code principles (Terraform, Ansible, or similar) Administer and optimise Kubernetes clusters across multiple regions, improving resilience, performance, and visibility Develop tools and scripts in Python or Go to automate monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering … practices into the infrastructure Optimise Linux systems for performance and reliability, including kernel tuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and log collection pipelines to enhance system insight and uptime Participate in architecture and design reviews, guiding platform evolution More ❯

Up to c. £225k Comp Package | Hybrid Working - 3 Days in Office] Role Overview We’re representing a global trading and digital assets firm at the forefront of high-performance technology and infrastructure innovation. The business is seeking a Site Reliability & Infrastructure Engineer to help design, automate, and scale the systems that underpin its global trading platforms. This role … AWS) and on-prem environments Implement automation across the stack using Infrastructure-as-Code principles (Terraform, Ansible, or similar) Administer and optimise Kubernetes clusters across multiple regions, improving resilience, performance, and visibility Develop tools and scripts in Python or Go to automate monitoring, configuration, and incident response workflows Contribute to on-prem colocation expansion projects, introducing low-latency engineering … practices into the infrastructure Optimise Linux systems for performance and reliability, including kernel tuning and networking configuration Partner with development and platform teams to embed SRE best practices, reducing manual toil through automation and observability Drive improvements in monitoring, alerting, and log collection pipelines to enhance system insight and uptime Participate in architecture and design reviews, guiding platform evolution More ❯

to secure a Senior TM1 Developer this is a hands-on role. Will own & develop IBM Planning Analytics (TM1). The role will focus on enabling strategic Financial Planning & Performance reporting. Will lead the design, development & continuous improvement of IBM Planning Analytics (TM1). Role: Partner with Finance, FP&A and Commercial teams - understand planning, budgeting & forecasting needs. TM1 …/IBM Planning Analytics - models, cubes, dimensions and hierarchies. Build & Optimise TI Processes & TM1 Rules - automate data loads, calculations and business logic. Own Technical Development across TM1 - ensuring high performance, scalability & best-practice model design. Integrate TM1 with ERP systems (e.g., SAP) & other data sources - ensure accurate, consistent data flow. Lead improvements to existing processes - proactively enhancing efficiency and … automation with Alteryx - provide insights to support commercial decision-making. Technical Skills Required: TM1 - IBM Planning Analytics - Strong hands-on experience with Turbo Integrator (TI) scripting TM1 Rules, feeders & performance optimisation/cube, dimension & hierarchy design Building scalable, high-performance Planning, Budgeting & Forecasting Models End-to-end TM1 development lifecycle - upgrades, configuration & system administration Integration experience with More ❯

to secure a Senior TM1 Developer this is a hands-on role. Will own & develop IBM Planning Analytics (TM1). The role will focus on enabling strategic Financial Planning & Performance reporting. Will lead the design, development & continuous improvement of IBM Planning Analytics (TM1). Role: Partner with Finance, FP&A and Commercial teams - understand planning, budgeting & forecasting needs. TM1 …/IBM Planning Analytics - models, cubes, dimensions and hierarchies. Build & Optimise TI Processes & TM1 Rules - automate data loads, calculations and business logic. Own Technical Development across TM1 - ensuring high performance, scalability & best-practice model design. Integrate TM1 with ERP systems (e.g., SAP) & other data sources - ensure accurate, consistent data flow. Lead improvements to existing processes - proactively enhancing efficiency and … automation with Alteryx - provide insights to support commercial decision-making. Technical Skills Required: TM1 - IBM Planning Analytics - Strong hands-on experience with Turbo Integrator (TI) scripting TM1 Rules, feeders & performance optimisation/cube, dimension & hierarchy design Building scalable, high-performance Planning, Budgeting & Forecasting Models End-to-end TM1 development lifecycle - upgrades, configuration & system administration Integration experience with More ❯