1 to 25 of 58 Remote Permanent Performance Optimisation Jobs

Shopify Developer

Hiring Organisation
Tiro Partners
Location
City of London, London, United Kingdom
Employment Type
Permanent
Salary
£45000 - £65000/annum
development projects from design through to delivery Provide technical leadership via architecture decisions, code reviews, and mentoring Ensure best practices across CI/CD, performance optimisation, security, and accessibility Collaborate with clients, Product Managers, and Business Analysts to align technical solutions with business goals Support, inspire, and develop … Developer, or similar role delivering complex Shopify projects Familiarity with modern theme build tools such as Vite.js or Webpack Strong understanding of scalable architecture, performance optimisation, and accessibility standards Experience with DevOps workflows, GitHub, and modern CI/CD pipelines Excellent communication and leadership skills Perks & Benefits Fully ...

Shopify Developer

Hiring Organisation
Tiro Partners Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £65,000 per annum
development projects from design through to delivery Provide technical leadership via architecture decisions, code reviews, and mentoring Ensure best practices across CI/CD, performance optimisation, security, and accessibility Collaborate with clients, Product Managers, and Business Analysts to align technical solutions with business goals Support, inspire, and develop … Developer, or similar role delivering complex Shopify projects Familiarity with modern theme build tools such as Vite.js or Webpack Strong understanding of scalable architecture, performance optimisation, and accessibility standards Experience with DevOps workflows, GitHub, and modern CI/CD pipelines Excellent communication and leadership skills Perks & Benefits Fully ...

Software Development Engineer in Test (SDET)

Hiring Organisation
4Square Recruitment Ltd
Location
Leatherhead, Surrey, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £60,000 per annum
Full-time The Role We’re hiring a Software Development Engineer in Test (SDET) to design, build and maintain automation frameworks that ensure the performance, reliability, and stability of our applications. You’ll combine strong software engineering skills with a quality-led mindset to advance our automation strategy … analysis and continuous refinement of processes. Testing & Validation Write and execute automated and occasional manual test cases. Validate functional and non-functional behaviour, including performance and regression areas. Participate in code reviews with a focus on quality, performance and maintainability. Collaboration & Continuous Improvement Partner with engineering and product ...

Full Stack Developer - Python, Java or .Net

Hiring Organisation
Hays Specialist Recruitment Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
with TDD and writing automated tests before coding. Nice-to-Have Skills Experience in healthcare or public sector projects. Knowledge of monitoring tools and performance optimisation. Familiarity with microservices architecture. What you'll get in return Flexible working options available. What you need ...

Senior Software Engineer

Hiring Organisation
Beamost Ltd
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows. This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working … latency, high-performance applications. What Youll Do Maintain, extend, and optimise an existing Python-based trading application Add new features and improve current capabilities with a focus on performance, reliability and clean architecture Build and optimise real-time pipelines handling high-frequency data Improve latency, throughput, and reliability ...

Senior Software Engineer

Hiring Organisation
Cathcart Technology
Location
Edinburgh, Midlothian, Scotland, United Kingdom
Employment Type
Permanent, Work From Home
join. You'd be joining one of their core teams, working on foundational engineering and helping to improve the underlying frameworks, tooling, and performance that enable the company to deliver a world-class customer experience. This team has a big focus this year, with several major initiatives planned around … performance optimisation , scalability, and mobile innovation - so there's plenty of interesting and challenging work ahead. You'll be working closely with both React Native and native iOS codebases , building and optimising select iOS components while enhancing the overall mobile platform performance. There's a real opportunity here ...

Staff Software Engineer - Go, Typescript, Python, .NET, Cloud

Hiring Organisation
We Are Dcoded Limited
Location
Manchester, North West, United Kingdom
Employment Type
Permanent, Work From Home
standards across the business. What You'll Be Doing Acting as a technical leader within the engineering organisation, driving best practice across design, quality, performance, and security Playing a key role in the architecture and build of a new version of a complex B2B fintech platform Partnering closely with … .NET Frontend: React.js Cloud & Platform: Modern cloud-native technologies (AWS/Azure/GCP), microservices, APIs Engineering Practices: CI/CD, automated testing, observability, performance optimisation Architecture: Distributed systems, scalable SaaS platforms, fintech or regulated environments (beneficial) What We're Looking For Proven experience operating at Staff/ ...

Senior Software Developer

Hiring Organisation
Oscar Technology
Location
Warwickshire, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £70,000 per annum
design, development, and enhancement of their core software products. You'll work across the full software development lifecycle, building robust, scalable, and high-performance systems using C#, .NET, SQL, and Azure. As a senior member of the team, you'll take technical ownership of key projects, contribute to architectural … decisions, and help shape best practices around clean code, performance optimisation, and CI/CD. While this is a hands-on coding role, you'll also act as a mentor to mid-level and junior developers/Including code reviews, encouraging modern development approaches and helping to upskill ...

Software Engineer

Hiring Organisation
Oscar Associates (UK) Limited
Location
Oxfordshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
resonsible for designing, building, and maintaining scalable applications. You'll work across the full Microsoft Technology stack, contributing to both new feature development and performance optimisation of existing systems. Key Responsibilities: Design, develop, and maintain robust software components for their EPOS platform using C#, .NET 6/… ASP.NET Core . Build and integrate RESTful APIs , microservices , and backend services that ensure high performance and scalability. Work closely with UI/UX designers , QA engineers , and product managers to deliver high-quality releases on schedule. Participate in code reviews , sprint planning , and architecture discussions . Optimise database ...

DevOps Team Lead

Hiring Organisation
Sky
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Cloud Engineering Lead

Hiring Organisation
Sky
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Lead Cloud Engineer

Hiring Organisation
Sky
Location
England, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Lead Cloud Systems Engineer

Hiring Organisation
Sky
Location
Southall, Middlesex, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Lead Cloud Operations Engineer

Hiring Organisation
Sky
Location
Southall, Middlesex, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Cloud Technology Lead

Hiring Organisation
Sky
Location
Purley, Surrey, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Cloud Infrastructure Team Lead

Hiring Organisation
Sky
Location
City Of Westminster, London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Cloud Engineering Team Lead

Hiring Organisation
Sky
Location
TW75QD, Syon, Greater London, United Kingdom
Employment Type
Permanent
experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

Lead Developer

Hiring Organisation
Intellectual Property Office
Location
Newport, Gwent, Wales, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
highly user focused and successful digital services ensuring governance standards are defined and adhered to. Implement toolkits and APIs for purposes such as integration, performance optimisation, security and scalability Proactively investigate problems and opportunities in existing processes, evaluating and communicating findings and recommendations to stakeholders ...

Senior Analytics Engineer

Hiring Organisation
Fruition Group
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£90,000
/CD best practice. Partner with analysts and data scientists to deliver performant and reliable datasets. Implement data quality monitoring, validation processes, and performance optimisation. Support AI initiatives by designing AI marts, feature engineering structures, and ML-ready datasets. Contribute to standardised KPIs, metadata, and a single source ...

Frontend Developer

Hiring Organisation
Brio Digital
Location
Leeds, West Yorkshire, United Kingdom
Employment Type
Permanent
Salary
£50000/annum
deliver new features focused on accessibility, usability and performance. Maintain and enhance existing codebases, including bug fixes, refactoring and new feature development. Optimise frontend performance and ensure consistent, accessible user experiences. Essential Skills & Experience 3+ years' experience with a modern JavaScript framework (ideally Vue.js). Strong understanding of frontend … CSS3, Flexbox and Grid. Proficient with Git and version control workflows. Ability to translate design mockups into clean, responsive interfaces. Understanding of accessibility and performance optimisation best practices. Confident using browser dev tools for debugging. Comfortable working in an Agile environment. Strong organisational skills and ability to manage ...

Python Data Engineer - Hedgefund

Hiring Organisation
Huxley Associates
Location
London, United Kingdom
Employment Type
Permanent
Salary
£123256 - £147908/annum + Bonus & Benefits Package
experience with AWS services (S3, Glue, Lambda) and Databricks. Solid understanding of financial market data, particularly time-series. Knowledge of data quality frameworks and performance optimisation techniques. Degree in Computer Science, Engineering, or related field. Preferred Skills SQL and relational database design experience. Exposure to quantitative finance … trading environments. Familiarity with containerisation and orchestration (Docker, Kubernetes). What We Offer Competitive compensation and performance-based bonus. Hybrid working model: 2 days per week on-site in London. Opportunity to work on mission-critical data systems for a global hedge fund. Collaborative, high-performance culture with ...

Lead DevOps Engineer

Hiring Organisation
Fruition Group
Location
United Kingdom
Employment Type
Permanent, Work From Home
Salary
£85,000
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 line management experience Cloud-native expertise (any cloud provider is fine: GCP, AWS or Azure) Knowledge ...

Senior Front End Developer

Hiring Organisation
Noir
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £90,000 per annum
join a company where your work genuinely matters. This is a role for engineers who are passionate about React , committed to building intuitive, high-performance interfaces, and excited about delivering cross-platform experiences using React Native . You'll play a key role in shaping the UI across both … design system. The team values engineers who are curious, collaborative, and eager to explore new ways of solving complex challenges, whether that's improving performance, enhancing accessibility, or leveraging tools like Storybook, Vite, and cutting-edge AI workflows. As a senior engineer, you'll help define the future ...

SRE Engineer Java JVM - Fintech

Hiring Organisation
Client Server
Location
East London, London, United Kingdom
Employment Type
Permanent, Work From Home
driving improvements across the platform. You'll have a broad scope including hands-on coding (Java) to build tools and automation, incident response, observability, performance optimisation and operational excellence, working with large scale Java JVM distribution systems and message brokers such as Kafka and ActiveMQ, with … Site Reliability Engineer SRE (or similar) with a Java software engineering background and a deep knowledge of JVM internals and performance tuning You have a strong knowledge of Site Reliability Engineering and how to build scalable solutions to improve reliability, productivity and efficiency You have strong experience with message ...

Web Developer

Hiring Organisation
Noir
Location
Swindon, Wiltshire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £40,000 per annum
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 … 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. ...