1 to 25 of 200 Permanent Performance Optimisation Jobs in England

High Performance Computer Scientist /HPC Developer

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 per annum
most demanding computational systems. This role is focused on solving difficult engineering problems at scale, working with advanced computing infrastructure, distributed systems and performance-critical workloads. We are seeking someone with outstanding technical ability who enjoys understanding systems deeply, from hardware and operating systems through to software optimisation and large-scale computation. About the Role You will work on the design, optimisation and operation of high-performance computing environments. You will be responsible for improving computational efficiency, building reliable infrastructure and solving complex challenges involving large-scale workloads. This is a highly technical role suited ...

Software Engineer (Mid and Senior Levels)

Hiring Organisation
One Big Circle Ltd
Location
City Of Bristol, England, United Kingdom
devices (including thermal and line-scan), data acquisition and edge processing, device-to-cloud pipelines, networking, system integration, hardware/software collaboration, field diagnostics, performance optimisation, secure and robust systems, Linux build systems (e.g. Yocto), media pipelines (e.g. GStreamer), FFMPEG, IoT devices, sensor data processing, signal conditioning, computer … Linux systems administration Machine Learning Applied machine learning, computer vision, object detection, image classification, model development and evaluation, data annotation and curation, training pipelines, performance optimisation, edge ML, MLOps, deployment and maintenance of ML solutions, Python development, Python-based ML frameworks, PyTorch, TensorFlow, sklearn, OpenCV, NumPy, feature development ...

Data Engineer

Hiring Organisation
Reed Technology
Location
Guildford, Surrey, United Kingdom
Employment Type
Permanent
Salary
£35000 - £60000/annum
warehouse and implement Lakehouse architectures. Design, build, and optimise a secure, scalable cloud data platform within the Microsoft Fabric ecosystem. Architect and optimise high-performance, scalable data pipelines using SQL, Python, and Fabric Data Factory. Collaborate with business stakeholders, architects, analysts, and data scientists to deliver impactful data products. … Serve as a technical leader-mentoring junior data engineers, driving best practices, and enhancing platform performance. Conduct monitoring, troubleshooting, root cause analysis, and performance optimisation of legacy data issues. Required Skills & Qualifications: Strong experience in delivering cloud data solutions, preferably in Microsoft Fabric or Azure. Experience with other ...

Postgresql DBA

Hiring Organisation
Atos
Location
Manchester, United Kingdom
billion, operating in 61 countries under two brands — Atos for services and Eviden for products. European number one in cybersecurity, cloud and high performance computing, Atos Group is committed to a secure and decarbonized future and provides tailored AI-powered, end-to-end solutions for all industries. Atos Group … with the rest of the development team to define the data model for new data feeds. You will be responsible for the maintenance and performance of the database and have ownership of the core data structures used within the application. Where purpose meets career: Flexible Work Model – Choose Work ...

Junior Full Stack Developer

Hiring Organisation
Diamond Search Recruitment Ltd
Location
Kent, Ashford, United Kingdom
Employment Type
Permanent
Salary
£42000/annum OTE
administrators Utilise AI development tools to support theme creation and development workflows Support data migration and synchronisation between Shopify and external platforms Implement website performance optimisation and best practice development standards Assist with A/B testing, SEO implementation and data-driven improvements Collaborate across multiple projects while … Shopify APIs and integrations Knowledge of CMS implementation and server-side development concepts Experience creating easy-to-manage backend environments Understanding of website performance optimisation techniques Knowledge of data migration and synchronisation processes Familiarity with e-commerce development and web design best practices Interest in AI-assisted development ...

Mid Level C# Full Stack Engineer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £100,000 per annum
This role offers the chance to deepen your expertise in C# and .NET within a highly technical team working on complex, performance-led systems. You will take on greater ownership while continuing to grow in a collaborative environment. The Company They are a growing, data-focused organisation with … Develop and enhance C# .NET applications across multiple systems * Work on both greenfield projects and improvements to existing platforms * Contribute to system design and performance optimisation * Collaborate with cross-functional teams to deliver technical solutions * Support and mentor more junior engineers where appropriate Your Skills & Experience * Strong commercial ...

Infrastructure Support Specialist - on site Aldermaston

Hiring Organisation
DXC
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
Primary location: Aldermaston SECURITY CLEARANCE: DV or willing to undergo vetting ROLE OVERVIEW: The Infrastructure Support Specialist plays a critical role within a high-performance, fast-paced Enterprise IT environment that supports a major public-sector client. The position is responsible for delivering advanced 3rd and 4th line support … focus on stability, resilience, and security. You will be a key member of the On-Prem Infrastructure Team, providing expert troubleshooting, solution implementation, and performance optimisation across server, storage, and virtualisation layers. Daily duties include performance monitoring, patch management, capacity planning, image deployment, system builds, BAU operational ...

Infrastructure Support Specialist

Hiring Organisation
DXC Technology
Location
Reading, United Kingdom
focus on stability, resilience, and security. You will be a key member of the OnPrem Infrastructure Team, providing expert troubleshooting, solution implementation, and performance optimisation across server, storage, and virtualisation layers. Daily duties include performance monitoring, patch management, capacity planning, image deployment, system builds, BAU operational support … project delivery, and collaboration across support teams. KEY RESPONSIBILITIES: Manage and support Windows Server, Storage, HyperV, Clustering, HCI platforms, backups, and monitoring systems. Perform performance monitoring, patching, image deployment, and system optimisation across infrastructure services. Troubleshoot issues across servers, storage, virtual machines, authentication paths, and workstations. Support enterprise ...

UI Engineering Manager

Hiring Organisation
Jobleads-UK
Location
Leeds, England, United Kingdom
system design, maintenance and repair.**UI ENGINEERING MANAGER****LEEDS**The UI Engineering Manager is a hands-on technical leader responsible for the frontend architecture, performance, security, and evolution of the Farnell eCommerce platform. This role combines deep expertise in modern Single Page Applications (SPAs) with people leadership, architectural influence … solutions, identifying risks, technical debt, and opportunities for improvement.* Produce clear technical recommendations, designs, and roadmaps to improve platform quality, maintainability, and delivery efficiency.**Performance, Security & Quality*** Ensure the Farnell eCommerce website is secure, resilient, and performant at scale.* Demonstrate deep expertise in: + Browser render paths and critical ...

Senior Developer - ~Perm - Birmingham

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent
Salary
£80,000
Senior C# Developer Location: Birmingham (Onsite) Salary: £50,000 - £80,000 DOE Job Type: Permanent, Full-Time Senior Developer - Platform Stability, Performance & Engineering Excellence We're looking for an experienced Senior Developer who enjoys solving complex technical challenges and improving the quality, resilience, and performance of large-scale … SaaS platforms. This is a unique opportunity to play a key role in improving platform reliability, performance, and engineering standards across a growing technology business. Rather than focusing on traditional feature development alone, you'll work closely with engineering teams to identify systemic issues, enhance platform robustness, and drive ...

Senior Full stack Developer - Birmingham - Perm,

Hiring Organisation
INFUSED SOLUTIONS LIMITED
Location
Birmingham, West Midlands, United Kingdom
Employment Type
Permanent
Salary
£80,000
Senior Full Stack Developer Location: Birmingham (Onsite) Salary: £60,000 - £80,000 DOE Job Type: Permanent, Full-Time Senior Developer - Platform Stability, Performance & Engineering Excellence We're looking for an experienced Senior Developer who enjoys solving complex technical challenges and improving the quality, resilience, and performance of large … scale SaaS platforms. This is a unique opportunity to play a key role in improving platform reliability, performance, and engineering standards across a growing technology business. Rather than focusing on traditional feature development alone, you'll work closely with engineering teams to identify systemic issues, enhance platform robustness ...

Senior Software Developer

Hiring Organisation
17918
Location
Wiltshire, United Kingdom
using tools like Terraform, CloudFormation. Support estimation and planning activities in an agile environment. Conduct peer code reviews, ensuring adherence to coding standards, performance optimisation, and maintainability, including use of static analysis tools such as SonarQube. Contribute to continuous improvement, identifying opportunities to refine code quality, development workflows … professional accreditation and experience. Hands-on experience with automated testing tools and frameworks such as JUnit, NUnit, Selenium, Cypress, Postman, or PyTest, Background in performance tuning for high-throughput, low-latency data systems. Knowledge of data warehousing and Lakehouse technologies. Experience with secrets management and identity access controls (e.g. ...

Senior Software Developer

Hiring Organisation
Raytheon
Location
Mere, Cheshire, UK
Employment Type
Full-time
Terraform, CloudFormation. \n ü Support estimation and planning activities in an agile environment. \n ü Conduct peer code reviews, ensuring adherence to coding standards, performance optimisation, and maintainability, including use of static analysis tools such as SonarQube. \n ü Contribute to continuous improvement, identifying opportunities to refine code … Hands-on experience with automated testing tools and frameworks such as JUnit, NUnit, Selenium, Cypress, Postman, or PyTest, \n ü Background in performance tuning for high-throughput, low-latency data systems. \n ü Knowledge of data warehousing and Lakehouse technologies. \n ü Experience with secrets management and identity access ...

Senior BI Developer

Hiring Organisation
AJ Bell
Location
Manchester, United Kingdom
define requirements, develop best-in-class data products, and produce engaging and accurate reporting used by our teams and senior managers to track performance and make strategic decisions. You’ll also form a key part of our wider data community, ensuring that our organisational data supports our ambitious growth … systems and structures and at different velocities including near real time Strong knowledge of data architecture (Snowflake is preferred), SQL development, security, and process optimisation Advanced SQL development including query development and optimisation, stored procedures, and performance tuning Expert knowledge of end-to-end enterprise BI using ...

Machine Learning Engineer

Hiring Organisation
RedTech Recruitment Ltd
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£75,000
technical decisions, while also collaborating closely with a highly technical team Experience in any of the following would be beneficial: Python memory management and performance optimisation GPU optimisation and acceleration Responsibilities for Machine Learning Engineer: Deploy and integrate new machine learning models into advanced commercial software products … projects from rapid prototyping and experimentation through to production implementation Optimise machine learning models for speed, scale, runtime and memory usage Help improve the performance and scalability of existing AI systems Develop innovative new features using machine learning and AI technologies Explore new technologies and approaches to solve complex ...

Senior Digital Engineer (Java)

Hiring Organisation
Love2Shop
Location
Liverpool, Merseyside, North West, United Kingdom
Employment Type
Permanent
Java and React Native, applying SOLID design principles throughout. Help shape the architecture and technical direction of digital products, with a focus on scalability, performance, and long-term maintainability. Contribute across the full software development lifecycle from shaping and scoping features through to production delivery within an agile team. … working with customer data, payment processing, or other regulated environments. Demonstrable experience with RESTful APIs and integrating third-party services. Strong understanding of web performance, accessibility (WCAG), and responsive design principles. Solid experience across the testing landscape, including unit, integration, and end-to-end testing using tools such ...

Senior CRO Developer

Hiring Organisation
Harnham - Data & Analytics Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £50,000 per annum
Senior CRO Developer Location: London, Hybrid (2-3 days per week in office) Salary: Up to £60,000 Sponsorship: Not available Digital optimisation agency specialising in analytics, SEO and experimentation is looking for a Senior CRO Developer to join their growing team. This is a key role within … range of client websites. Role overview: Build and deploy A/B and multivariate tests for multiple clients Work closely with CRO and optimisation teams on experimentation delivery Support ongoing optimisation of conversion performance across client accounts Occasionally client-facing to support technical delivery discussions Work ...

Senior Software Developer

Hiring Organisation
NSD
Location
Gloucestershire, South West, United Kingdom
Employment Type
Permanent
your CV to The Opportunity An exciting opportunity has arisen for an experienced Software Developer to join a specialist engineering team delivering secure, high-performance backend software for mission-critical programmes. Working within Linux environments, you'll help design and develop scalable Java and C++ applications while providing technical … technical challenges, mentoring others, and contributing to the design of secure, enterprise-scale systems. What You'll Be Doing Designing, developing and maintaining high-performance backend software using Java and C++. Leading the technical design and implementation of software components, APIs and services. Building secure, scalable and maintainable applications ...

Senior Software Developer

Hiring Organisation
17918
Location
West Bromwich, Staffordshire, United Kingdom
your CV to The Opportunity An exciting opportunity has arisen for an experienced Software Developer to join a specialist engineering team delivering secure, high-performance backend software for mission-critical programmes. Working within Linux environments, you'll help design and develop scalable Java and C++ applications while providing technical … technical challenges, mentoring others, and contributing to the design of secure, enterprise-scale systems. What You'll Be Doing Designing, developing and maintaining high-performance backend software using Java and C++. Leading the technical design and implementation of software components, APIs and services. Building secure, scalable and maintainable applications ...

Software Engineering Manager

Hiring Organisation
WRK DIGITAL LTD
Location
Leeds, West Yorkshire, Yorkshire, United Kingdom
Employment Type
Permanent
platform. A key part of the role will involve reviewing existing systems, identifying opportunities to reduce technical debt, and driving improvements that enhance performance, maintainability and delivery efficiency. Ensuring performance and security at scale will be a core focus. Youll work across teams to optimise rendering, caching strategies … evolving large-scale SPAs in production environments Deep expertise in React.js, Node.js and modern frontend ecosystems Strong understanding of browser internals, rendering pipelines and performance optimisation Experience improving frontend performance metrics such as TTFB, TTFP and TTI Strong knowledge of caching strategies across client, edge and server ...

Founding Engineering - Top London Software House

Hiring Organisation
IT Graduate Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 per annum
Architect and build core technology from first principles. Own critical engineering decisions across infrastructure, backend systems and product development. Design scalable, reliable and high-performance software systems. Solve complex technical challenges with speed and precision. Build prototypes, test ideas and rapidly iterate towards production solutions. Establish engineering standards, tooling … development practices. Optimise systems for performance, reliability and scalability. Work directly with founders to shape product strategy and technical direction. Take ownership of projects from initial concept through to deployment. About You Exceptional academic background from a leading UK university. Degree in Computer Science, Mathematics, Physics, Engineering or another ...

Senior Java Engineer

Hiring Organisation
Jobleads-UK
Location
Greater London, England, United Kingdom
internal platforms and client facing products. You will work with innovative technologies, contribute to complex algorithmic design, and drive engineering excellence in a high performance, data‐intensive environment. Key Responsibilities Design, develop, and maintain complex Java and Python applications using modern engineering practices. Build/embed AI powered features … into mission critical systems. Architect and enhance services that support largescale, performance critical index computations. Collaborate with Product Managers, UX, and engineering teams globally to deliver high quality products. Lead projects end‐to‐end through requirements, design, development, testing, deployment, and operations. Build and maintain automated test suites ...

AI Coder/Senior Full-Stack Engineer (.NET / React) — Remote, UK

Hiring Organisation
Event Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
/static side still lives on Azure, so comfort working across both clouds is a real advantage. Databases: PostgreSQL and SQL Server — schema design, performance optimisation, data-access patterns. DevOps & Automation: Infrastructure-as-code with Terraform, CI/CD pipelines, GitHub Actions, build and release automation. Containers & Runtime … with Product Managers, Engineering Managers and cross-functional teams. Communicate clearly with both technical and non-technical stakeholders. Monitor and report on key software performance and delivery metrics. Maintain high-quality technical documentation and healthy development processes. Flag issues early when they might affect delivery timelines. Why This Role ...

Head of DevOps and Platform Automation

Hiring Organisation
VIQU IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£10,000 - £120,000 per annum
driving DevOps maturity, CI/CD excellence, and automation strategy across multi-tenant cloud platforms, while leading geographically dispersed teams and ensuring robust operational performance, governance, and continuous improvement. Key Responsibilities of the Head of DevOps and Platform Automation: Own and evolve the DevOps, CI/CD and automation … improvement and engineering excellence Oversee end-to-end platform lifecycle management ensuring availability, resilience, security and compliance across all tooling environments Drive standardisation and optimisation of CI/CD pipelines, automation frameworks and DevOps practices across the organisation Manage BAU performance, incident escalation and service reliability for critical ...

Data Engineer

Hiring Organisation
Reed
Location
Ashton-on-Ribble, Preston, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £55,000 per annum, Inc benefits
develop scalable, high-quality solutions. Create clear technical documentation and communicate solutions to both technical and non-technical audiences. Support data quality, reliability, and performance optimisation initiatives. Contribute to CI/CD processes, testing, deployment, and environment management. Collaborate with engineering teams to improve standards, processes, and data ...