1 to 25 of 195 Performance Optimisation Jobs in the UK excluding London

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 Tech Lead

Hiring Organisation
Jobleads-UK
Location
Bristol, England, United Kingdom
solutions. This role offers the chance to influence technology decisions across the full product lifecycle, from innovation and new product development through to optimisation and transformation of existing systems.**Job Description:****What Success Looks Like**In this role, you will help deliver:* Clear and scalable technical architecture across …/IEC 42001 initiatives* Define and enforce coding standards, review processes, and quality expectations* Improve engineering quality metrics and continuous improvement practices* Support performance optimisation, resilience, scalability, and reliability* Lead vulnerability remediation and security improvement activities**DevOps & Automation**You will:* Architect and improve CI/CD pipelines* Champion ...

Principal Data Solution Architect

Hiring Organisation
Jobleads-UK
Location
Leeds, England, United Kingdom
distributed data platforms that power Flutter’s applications across Gaming and Sportsbook. The role is focused on execution and solutions delivery – building scalable, high‐performance data platforms that enable real‐time and batch data processing at scale. Responsibilities Drive platform capability improvements – continuously enhance distributed data platforms using knowledge … identify, communicate, and mitigate technology risks associated with distributed systems, data platform decisions, and system integrations. Ensure operational excellence – design solutions with security, cost optimisation, performance, regulatory requirements, and compliance in mind. Contribute to architecture governance – support architecture forums and governance processes, ensuring timely review and alignment across ...

Performance Test Lead/Performance Engineer - SC Cleared

Hiring Organisation
Uniting People
Location
Leeds, Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP 300 Daily
Performance Test Lead/Performance Engineer - SC Cleared Location: London or Leeds (50% onsite) Contract: 12 Months Rate: £300 per day Start: 1st October 2026 We're recruiting a Performance Test Lead to join a major transformation programme. This is a Performance Engineering role … traditional performance testing position. Essential Skills: 5+ years' Performance Testing/Engineering JMeter and/or LoadRunner Performance analysis & bottleneck identification NFR definition and performance strategy Azure, AWS or GCP performance testing Dynatrace or New Relic Grafana & Splunk Python Scripting Jenkins/GitHub Actions ...

Senior Software Engineer GDK

Hiring Organisation
Jobleads-UK
Location
Manchester, England, United Kingdom
across multiple games, teams, and technologies. Influence technical architecture and engineering direction, ensuring solutions are scalable, maintainable, and built for the future. Solve complex performance and optimisation challenges across different platforms, languages, and environments. Write clean, high-quality code and champion engineering best practices to maintain a robust … engines such as Unreal, Unity, or equivalent technologies. Experience working within Agile software development teams and delivering solutions through iterative development practices. A pragmatic, performance-focused approach to problem solving, with the ability to balance technical excellence and commercial requirements. Strong collaboration and communication skills, with the ability ...

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 ...

Technical Lead, Machine Learning

Hiring Organisation
LMA Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£150,000 - £180,000 per annum
company's core ML systems, including: Machine Learning Infrastructure End-to-end training pipelines Evaluation and benchmarking frameworks Production inference architecture Monitoring, observability, and performance systems Deployment and scaling infrastructure Large Language Models Fine-tuning foundation models using: LoRA QLoRA SFT DPO Distillation Improving model reliability and reasoning capabilities … Building systems that move beyond simple chat applications into real-world task execution Production AI Systems GPU optimisation and infrastructure efficiency Low-latency inference systems Scalability and reliability engineering Cost and performance optimisation AI safety and evaluation frameworks Technical Leadership Drive architectural decisions across the ML platform ...

Senior Platform Engineer

Hiring Organisation
Jobleads-UK
Location
Milton Keynes, England, United Kingdom
Azure DevOps Pipelines, Terraform and Azure native services to enable Infrastructure as Code (IaC), guided by the Azure Well‐Architected Framework to ensure security, performance, reliability and cost efficiency. Principal Accountabilities Design, deploy and operate secure, scalable cloud infrastructure across multiple regions in Microsoft Azure. Build and manage Azure … tooling to empower development teams to deploy securely and independently. Apply Azure Well‐Architected Framework principles to ensure solutions meet standards of reliability, performance, cost optimisation and security. Collaborate with Security and Engineering teams to ensure compliance and continuous improvement. Maintain comprehensive documentation for systems, configuration and automation ...

Database Administrator

Hiring Organisation
Uniting Ambition
Location
Kettering, Northamptonshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £65000/annum
role in both day-to-day database operations and longer-term platform improvements. This is a varied role offering a mix of BAU support, performance optimisation, upgrades, migrations, and infrastructure projects. You'll have the opportunity to influence database strategy while working with modern engineering and DevOps practices. … Responsibilities Administer and support PostgreSQL and Oracle databases, with a primary focus on PostgreSQL Monitor, troubleshoot and optimise database performance Design and maintain high availability, replication, backup and disaster recovery solutions Perform database upgrades, patching and lifecycle management activities Support database migration and platform modernisation initiatives Maintain database security ...

Senior BI Developer

Hiring Organisation
AJ Bell
Location
Manchester, Lancashire, England, United Kingdom
Employment Type
Full-Time
Salary
Competitive salary
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 ...

Non-Functional Test Lead

Hiring Organisation
Brio Digital
Location
Leeds, West Yorkshire, United Kingdom
Employment Type
Contract
Contract Rate
£700/day
Lead to join a large-scale enterprise transformation programme , taking ownership of the non-functional testing strategy across multiple workstreams. You'll lead the Performance Testing and Operations Acceptance Testing (OAT) teams, ensuring the platform is resilient, scalable and ready for production. This is a key leadership role, working … closely with engineering, architecture and delivery teams to drive performance, operational readiness and continuous improvement throughout the programme lifecycle. Key Responsibilities Define and own the end-to-end non-functional testing strategy across the programme. Lead the Volume & Performance Testing and Operations Acceptance Testing (OAT) teams. Establish performance ...

Senior Java Developer

Hiring Organisation
MW recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£90,000 - £125,000 per annum
sophisticated trading systems used across the capital markets landscape. You'll collaborate directly with Product, Client Services and Engineering leadership to deliver scalable, high-performance software and help shape the future direction of the platform. If you enjoy solving complex technical challenges, mentoring developers and working with modern technologies … Skills 7+ years' commercial Java development experience Previous experience within Financial Services ideally capital markets Strong Java 11+ and Spring Boot development Multi-threading, performance optimisation and profiling Experience building microservices TDD and automated testing (JUnit, Mockito, Spock) Maven and Git CI/CD pipelines and DevOps practices ...

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 ...

Principal Software Engineer

Hiring Organisation
Jobleads-UK
Location
Luton, England, United Kingdom
Mission. You will be responsible for the overall design and accountable for upholding engineering standards, ensuring the delivery of robust, secure, scalable, and high-performance systems. Your role will involve guiding teams towards technical excellence, fostering a culture of continuous improvement, and driving high performance across all aspects … technical delivery and execution of the technical vision and strategy across multiple squads. Lead the design, architecture, and development of scalable, reliable, and high-performance software systems, including system design, technology selection, and overall architecture. Champion data integrity and performance, ensuring systems are designed for scalability and operational ...

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 ...

Principal Java Engineer

Hiring Organisation
Jobleads-UK
Location
Wallingford, England, United Kingdom
architecture and technical direction across multiple products and services. Design, implement and review high-quality Java and full-stack solutions, APIs and integrations. Lead performance optimisation, scalability and resilience initiatives. Drive security best practices, vulnerability remediation and secure software development lifecycle (SDLC) practices. Work closely with Data, Operations … complex production issues. Drive improvements in system observability, monitoring and operational performance. Ensure applications are designed and operated to meet reliability, availability and performance targets. Partner with Operations, DevOps and QA teams to maintain production stability and service quality. Embed a culture of operational excellence, continuous improvement and proactive ...

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 ...

OS Software Developer

Hiring Organisation
Guidant Global
Location
Gloucester, Gloucestershire, South West, United Kingdom
Employment Type
Contract
Contract Rate
£500 - £600 per day
role is ideal for someone who thrives in collaborative engineering environments, enjoys solving complex problems, and is passionate about building scalable, secure, and high-performance applications. Key Responsibilities Develop high-quality software for client projects, working individually or as part of a development team Collaborate with technical leads … experience with Git and open-source platforms (GitHub/GitLab) Ability to build and deploy scalable applications or libraries Strong debugging, problem-solving, and performance optimisation skills Understanding of open-source licensing (MIT, GPL, Apache) Experience with cloud platforms such as AWS or Azure Ability to create clear ...

Principal Java Engineer

Hiring Organisation
Jobleads-UK
Location
Wallingford, England, United Kingdom
engineers through technical leadership and best practice. Platform architecture Design, implement and review high‐quality Java and full‐stack solutions, APIs and integrations. Lead performance optimisation, scalability and resilience initiatives. Drive security best practices, vulnerability remediation and secure software development lifecycle (SDLC) practices. Work closely with Data, Operations … complex production issues. Drive improvements in system observability, monitoring and operational performance. Ensure applications are designed and operated to meet reliability, availability and performance targets. Partner with Operations, DevOps and QA teams to maintain production stability and service quality. Embed a culture of operational excellence, continuous improvement and proactive ...

Software Engineer (React Native)

Hiring Organisation
Centrica - CHP
Location
Windsor, Berkshire, South East, United Kingdom
Employment Type
Permanent
modern engineering practices Utilise Azure DevOps and GitHub for work management, repositories, pipelines, and artifacts Implement comprehensive observability solutions using Datadog for monitoring and performance optimisation Ensure security and code quality through automated scanning and testing processes Leverage Launch Darkly for feature flag management and controlled rollouts Problem ...

Platform Network Engineer

Hiring Organisation
Jobleads-UK
Location
Reading, England, United Kingdom
design, build and evolve the networking platforms that power OQC's cloud, lab and office environments. You'll help deliver secure, resilient and high-performance infrastructure that enables cutting‐edge quantum computing research, experimentation and commercial product delivery. The Role Working within our DevOps team, you'll be responsible … cloud environments. You'll collaborate with engineers across the business to deliver scalable networking solutions, automate infrastructure wherever possible, and continuously improve the resilience, performance and security of our platforms. What You'll Be Working On Design, implement and maintain secure network infrastructure across cloud, lab and office environments. ...

Head of Technology Operations

Hiring Organisation
Jobleads-UK
Location
Halifax, England, United Kingdom
growth and skill development. Monitoring the teams closely to ensure exceptional service is provided and KPIs are met. Foster a collaborative, inclusive, and high‐performance culture, actively removing barriers between teams and celebrating achievements to build motivation. Establish ambitious standards and support the teams to achieve high performance … endpoint estate, and telephony across all sites, acting as senior technical escalation point on major incidents. Ensure infrastructure availability, resilience, and performance, owning monitoring, capacity planning, and preventative maintenance across the estate. Own backup, business continuity, and disaster recovery arrangements, including regular testing of recovery plans. Define and maintain ...

Web Developer

Hiring Organisation
Arc IT Recruitment
Location
Brighton, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £60,000 per annum
RESTful and SOAP APIs with third-party systems Design and optimise SQL and NoSQL databases Support full SDLC including testing, deployment, and maintenance Monitor performance, troubleshoot issues, and drive continuous improvements Required Skills & Experience 3–5 years’ experience in software or application development Strong proficiency in C#, ASP.NET/… ASP.NET Core Experience with modern frontend frameworks (Angular, React, or Vue.js) Solid understanding of REST APIs, microservices, and performance optimisation Experience with SQL Server and exposure to NoSQL databases Hands-on experience with AWS and/or Azure Familiarity with CI/CD pipelines and Infrastructure as Code ...

Senior Wordpress Developer

Hiring Organisation
Alban Recruitment Solutions
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £50,000 per annum
WordPress websites and applications. Develop custom WordPress themes, plugins and Gutenberg blocks. Produce clean, maintainable and well-documented code. Build responsive, accessible and high-performance websites. Work collaboratively with designers, project managers and clients. Mentor and support junior developers. Lead technical discussions and code reviews. Attend client meetings … MySQL WordPress REST API Custom Post Types Advanced Custom Fields (ACF) Custom plugin development WooCommerce experience Gutenberg Block development WordPress security best practices Performance optimisation and Core Web Vitals Front End CSS3 SASS/SCSS JavaScript (ES6+) jQuery Responsive development Cross-browser compatibility Modern Development Git version control ...

Senior Wordpress Developer

Hiring Organisation
Alban Recruitment Solutions
Location
St. Albans, Hertfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£35,000 - £50,000 per annum
WordPress websites and applications. Develop custom WordPress themes, plugins and Gutenberg blocks. Produce clean, maintainable and well-documented code. Build responsive, accessible and high-performance websites. Work collaboratively with designers, project managers and clients. Mentor and support junior developers. Lead technical discussions and code reviews. Attend client meetings … MySQL WordPress REST API Custom Post Types Advanced Custom Fields (ACF) Custom plugin development WooCommerce experience Gutenberg Block development WordPress security best practices Performance optimisation and Core Web Vitals Front End CSS3 SASS/SCSS JavaScript (ES6+) jQuery Responsive development Cross-browser compatibility Modern Development Git version control ...