1 to 25 of 69 Performance Optimisation Jobs in the South East

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 ...

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 ...

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 ...

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 ...

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. ...

Web Developer

Hiring Organisation
ARC IT Recruitment
Location
Brighton, Sussex, United Kingdom
Employment Type
Permanent
Salary
GBP 40,000 - 60,000 Annual
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 Front End 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 ...

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 ...

Principal Software Development Engineer

Hiring Organisation
Jobleads-UK
Location
Reigate, England, United Kingdom
pipelines, Infrastructure as Code, automation frameworks, and database-as-code practices using Redgate Flyway. Take ownership of critical customer systems, ensuring operational resilience, observability, performance optimisation, and rapid incident response. Collaborate closely with Product, Delivery, Operations, and Commercial teams to shape technical solutions, delivery plans, and strategic outcomes. ...

Senior Power BI Developer

Hiring Organisation
Method Resourcing
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
highly skilled Power BI professional who enjoys working across the full BI lifecycle, from data modelling and dashboard development through to governance, optimisation, and stakeholder engagement. You'll work closely with Data Engineering teams and business leaders to deliver trusted, scalable, and high-performing reporting solutions. Key Responsibilities … maintain scalable data models using dimensional modelling and star schema best practices Develop advanced DAX calculations and Power Query transformations Optimise report and dataset performance, ensuring reliability and scalability Partner with Data Engineering teams to support data warehousing and analytics architecture initiatives Implement and maintain Power BI governance, security ...

Senior Full-Stack Developer

Hiring Organisation
Airtask Group
Location
Milton Keynes, England, United Kingdom
full-time Senior Software Developer with strong experience in Angular and Spring Boot to help design and deliver scalable, secure, and high-performance web applications. This is a hands-on full-stack role where you’ll also play a key part in production support (Tier 3)— resolving complex issues … hybrid working arrangement. Key responsibilities are: • Design, build, and maintain full-stack web applications using Angular and Spring Boot • Develop and integrate secure, high-performance REST APIs • Work with Docker and Kubernetes to support scalable, containerized environments • Apply reactive programming principles (RxJS/Project Reactor) • Contribute to system architecture ...

Dynamics 365 Developer

Hiring Organisation
Nigel Frank International
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£65,000 - £70,000 per annum
support integrations between Dynamics 365 and external systems using APIs, web services, middleware platforms, and cloud technologies. Investigate issues, resolve defects, and improve the performance, reliability, and usability of existing Dynamics 365 solutions. Engage with business analysts, consultants, stakeholders, and end users to understand requirements and deliver effective technical … solutions. Apply secure coding practices, development standards, and performance optimisation techniques across Dynamics 365 and Power Platform solutions. Maintain awareness of Microsoft product updates, platform improvements, and emerging technologies relevant to Dynamics 365 development. Skills and Experience Essential: Proven experience developing solutions within Microsoft Dynamics 365 environments. Strong ...

Senior Embedded Rust / Systems Developer

Hiring Organisation
YT Technologies
Location
Crawley, West Sussex, South East, United Kingdom
Employment Type
Permanent
Salary
£60,000
their close-knit, highly collaborative R&D team of 8 engineering professionals. This is a pure systems-level engineering role focused entirely on writing performance-critical software directly for embedded devices, not servers. If you are looking for an autonomous environment where you can solve complex technical challenges using … Rusts memory safety and concurrency features, this is your next project. Key Responsibilities Design & Develop: Build and maintain high-performance, safe, and maintainable systems software using Rust. Architecture & Collaboration: Collaborate with team members on architectural decisions, own features end-to-end from design through to deployment, and participate ...

Data Engineer

Hiring Organisation
Hydrogen Group
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £100,000 per annum
cloud data platform. Support the adoption of modern engineering practices, automation and AI-assisted development tools. Champion best practice around data quality, governance and performance optimisation. Skills & Experience Essential Strong commercial experience as a Data Engineer. Expert knowledge of Snowflake . Strong experience with DBT . Data modelling experience ...

Lead .NET Developer

Hiring Organisation
Proactive Appointments
Location
Surrey, United Kingdom
Employment Type
Permanent
Salary
GBP 70,000 - 75,000 Annual
stakeholder management and communication skills Previous experience leading or mentoring developers Desirable Blazor Elasticsearch Azure DevOps Azure Key Vault, Monitor, Application Insights Cosmos DB Performance optimisation and security best practices Recruitment and people management experience Benefits Annual performance bonus Private medical, dental, life assurance, and income protection ...

Lead .NET Developer

Hiring Organisation
Proactive Appointments
Location
Camberley, Surrey, United Kingdom
Employment Type
Permanent
Salary
GBP 65,000 - 75,000 Annual
following would be a distinct advantage: Blazor Elasticsearch Azure DevOps Azure Key Vault, Azure Monitor, and Application Insights Cosmos DB Performance optimisation and security best practices Recruitment and people management What's on Offer Annual performance bonus Private medical and dental cover Life assurance and income protection ...

BI Architect

Hiring Organisation
Michael Page Technology
Location
London, South East, England, United Kingdom
Employment Type
Temporary
Salary
£700 - £800 per day
support enterprise reporting Support integration of data from multiple SaaS and third-party systems Ensure best practices across data quality, governance, metadata, and performance optimisation Maintain documentation including data models, data dictionaries, and architecture diagrams Assist with CI/CD pipelines and deployment processes (Azure DevOps) Profile Proven ...

SQL Server DBA / Data Engineer

Hiring Organisation
Noir
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £85,000 per annum
Azure, GCP, SQL Server DBA/Data Engineer) Founded in 2010, our client is a rapidly growing software company focused on delivering high-performance data solutions for enterprise clients. With a strong presence across the U.S. and Europe, they're now scaling their operations in the UK to support … their expansion, they are looking for a talented SQL/Data Engineer. In particular, they are looking to move into the field of high-performance data analytics. contribute to the ongoing development and performance optimisation of their mission-critical data platforms. Our client is looking for passionate ...

Senior Software Developer

Hiring Organisation
Spectrum IT Recruitment
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£100,000 - £120,000 per annum
that support real-world trading strategies. As a senior member of the team, you will contribute both technically and strategically, helping shape development standards, performance optimisation, and system scalability. You will primarily work within a C# .NET SQL Server ecosystem, developing high-performance, reliable, and maintainable applications. … Responsibilities Design, develop, and maintain high-performance applications in C# and .NET Lead architectural discussions and contribute to technical direction Build scalable, reliable systems to support automated trading and research Develop and optimise database solutions (SQL Server or equivalent) Improve performance, reliability, and automation across systems Mentor junior ...

C# . Net Developer, Hybrid

Hiring Organisation
Exposed Solutions
Location
SL1, Slough, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £70000/annum
direction of the platform. This role would suit someone who enjoys getting into the detail, writing high-quality code and working on software where performance, scalability and reliability really matter. Technical Skills Required You'll have commercial experience with most of the following: C# .NET ASP.NET MVC ASP.NET MongoDB … Excellent debugging and problem-solving skills. Experience writing efficient, maintainable, well-tested code. Knowledge of low-level programming concepts , such as memory management, threading, performance optimisation and concurrency. Nice to Have Experience with distributed systems or microservices. Cloud experience (Azure or AWS). CI/CD and DevOps ...

OSM Migration Service Lead

Hiring Organisation
Hackajob Ltd
Location
Farnborough, Hampshire, South East, United Kingdom
Employment Type
Permanent
meet security requirements including MOD Classification Guides, ITAR and defence security standards Lead technical design reviews and validation testing to ensure data integrity, system performance and operational readiness Document architecture decisions, migration methodologies and operational procedures for knowledge transfer and continuity Team & Resource Management Lead, mentor and develop technical … successful delivery of complex technical projects with multiple stakeholders and tight timelines Technical Knowledge Deep understanding of IT infrastructure architecture, capacity planning and performance optimisation Strong knowledge of cloud platforms (AWS, Azure or equivalent) and hybrid deployment models Experience with configuration management, automation tools and infrastructure-as-code ...

Business Intelligence Analyst

Hiring Organisation
FatFace
Location
Havant, England, United Kingdom
complex data into meaningful insights using Power BI, DAX, Power Query, and SQL, while integrating data from multiple sources. Strong focus on data quality, performance optimization, and stakeholder engagement to deliver scalable business intelligence solutions that drive operational efficiency and strategic outcomes. Role Responsibilities Developing PowerBI dashboards to provide ...