26 to 50 of 69 Performance Optimisation Jobs in the South East

Senior C++ Software Engineer

Hiring Organisation
Avanti
Location
Oxford, Oxfordshire, England, United Kingdom
Employment Type
Full-Time
Salary
£75,000 - £95,000 per annum
Avanti Recruitment is partnering with an innovative deep-tech software company developing high-performance software used by millions of devices worldwide. This is an opportunity to join a small team of exceptional engineers working on the company's core C++ platform. The work is technically demanding, with a strong … emphasis on performance, correctness and elegant software design rather than rapid feature delivery. The Role You'll be working on the core software platform, solving complex engineering problems involving: Modern C++ development High-performance algorithms and data structures Concurrent and multithreaded programming Memory management and performance optimisation ...

WordPress Developer

Hiring Organisation
Robert Half
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
Salary negotiable
website. Work closely with Marketing, UX and Product teams to deliver a modern, engaging digital experience. Optimise the website for SEO and Answer Engine Optimisation (AEO), ensuring content is discoverable across AI search platforms and large language models. Integrate third-party platforms including HubSpot, Google Ads and other marketing … technologies. Implement custom WordPress development where required to support new business initiatives. Manage website performance, security and CDN configuration, including Cloudflare and cookie consent solutions. Support the launch of new AI-driven products and API offerings by delivering new website functionality and landing pages. Monitor website performance ...

Data Engineer

Hiring Organisation
Lynx Recruitment Ltd
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
Salary negotiable
Microsoft Fabric, Databricks, or similar technologies Build and optimise data solutions using Python, Spark, PySpark, and/or SQL Support data integration, transformation, and performance optimisation Collaborate with stakeholders to ensure high-quality, reliable data architecture Essential Skills & Experience Hands-on experience with Microsoft Fabric, Databricks, or equivalent ...

Dynamics 365 Developer - London (Remote) - c£70K

Hiring Organisation
Nigel Frank International
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 per annum
relational database design Knowledge of Azure services, REST/SOAP APIs and enterprise system integrations Strong understanding of secure coding practices, solution architecture and performance optimisation Excellent analytical, debugging and problem-solving skills ...

Sitecore Developer - Outside IR35

Hiring Organisation
SRG
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£0 per day
CMS. Work with stakeholders to translate business requirements into technical solutions. Deliver integrations with third-party platforms, APIs and enterprise systems. Support platform upgrades, performance optimisation and technical improvements. Contribute to CI/CD pipelines, automated deployments and development best practices. Collaborate with UX, content and product teams ...

Staff Software Engineer

Hiring Organisation
Stepstone UK
Location
South East London, London, United Kingdom
Employment Type
Permanent
OpenAI, Bedrock), prompt orchestration, tool usage and interaction patterns. Expertise in AI system design including state management, memory strategies, evaluation approaches, guardrails, observability and performance optimisation for LLM-powered systems. Strong communication and influencing skills, with experience mentoring engineers and driving high standards across teams while engaging both ...

Contract Power BI Developer

Hiring Organisation
Adria Solutions Ltd
Location
Milton Keynes, Newport Pagnell, Buckinghamshire, United Kingdom
Employment Type
Contract
Contract Rate
£0 - £350/day
Integration SaaS platform integrations API connectivity Data ingestion & transformation Data quality and governance Reporting & Analytics Interactive dashboards Operational reporting KPI development Self-service reporting Performance optimisation What You'll Be Doing Review and optimise an existing Microsoft Fabric and Lakehouse environment Assess current data models, semantic models … processes and reporting architecture Recommend improvements around performance, scalability, governance and security Integrate data from multiple business systems and APIs Design and develop operational reports and interactive Power BI dashboards Build robust data models, measures and KPIs Work directly with stakeholders to gather requirements and translate business needs into ...

Marketing Manager

Hiring Organisation
proAV Limited
Location
Egham, Surrey, United Kingdom
Employment Type
Permanent
effectiveness of client engagement. Working closely with sales, business development, and senior leadership, the Marketing Manager ensures that marketing activity contributes meaningfully to business performance while aligning with and informing long-term strategic objectives. In addition to campaign delivery, the role is accountable for building the systems, processes … activity and communications Plan and deliver integrated marketing campaigns across digital channels, including website, SEO, email, and social Responsible for proAV’s website, including performance optimisation, audience engagement, and overall digital visibility Establish reporting frameworks to track performance and optimise marketing effectiveness Work closely with sales, business ...

Senior Front End Developer

Hiring Organisation
Halian Technology Limited
Location
Maidenhead, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£85,000
deliver features from concept through to production Contribute to and evolve front-end architecture, component libraries, and shared patterns Maintain high standards across performance, accessibility, and overall user experience Support production stability and continuously improve the quality of live systems Provide technical guidance, contribute to code reviews, and mentor … TypeScript and modern frameworks such as React, Vue.js, or similar Solid front-end engineering fundamentals including: Component-based architecture State management Responsive design Accessibility Performance optimisation Internationalisation Experience with automated testing (component and end-to-end) using tools such as Playwright, Cypress, or similar Familiarity with CI/ ...

Infrastructure Engineer (Azure)

Hiring Organisation
Hays Technology
Location
Windsor, Berkshire, United Kingdom
Employment Type
Permanent
Salary
£50000 - £55000/annum £45,000 - £50,000
contribute to the development of cloud and hybrid architecture, ensuring systems remain secure, available and scalable. Day-to-day responsibilities will include administration and optimisation of Microsoft 365 services such as Exchange Online, SharePoint, Teams and Entra ID, alongside ownership of modern endpoint management through Microsoft Intune, including Autopilot … resolution of cloud and identity related security incidents. You will also contribute to back up, disaster recovery and business continuity planning, monitor platform performance and resilience, manage certificates and domains, and work closely with third party suppliers where required. The role includes producing clear technical documentation, contributing to infrastructure ...

Senior Front End Engineer

Hiring Organisation
Halian Technology Limited
Location
Reading, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£85,000
deliver features from concept through to production Contribute to and evolve front-end architecture, component libraries, and shared patterns Maintain high standards across performance, accessibility, and overall user experience Support production stability and continuously improve the quality of live systems Provide technical guidance, contribute to code reviews, and mentor … TypeScript and modern frameworks such as React, Vue.js, or similar Solid front-end engineering fundamentals including: Component-based architecture State management Responsive design Accessibility Performance optimisation Internationalisation Experience with automated testing (component and end-to-end) using tools such as Playwright, Cypress, or similar Familiarity with CI/ ...

BMC Helix ITSM Technical Consultant/Architect

Hiring Organisation
Falcon Chase International
Location
Andover, Hampshire, United Kingdom
Employment Type
Contract
Contract Rate
GBP Annual
ADDM) and CMDB data models. Configure workflows, approvals, SLAs, OLAs, escalations and automation rules. Provide Level 3 production support, platform administration, upgrades, patching and performance optimisation. Work closely with business stakeholders, Solution Architects and Service Management teams to deliver scalable ITSM solutions aligned with ITIL v4. Produce technical documentation ...

BMC Helix ITSM Technical Consultant/Architect

Hiring Organisation
Falcon Chase International
Location
Andover, Hampshire, UK
Employment Type
Full-time
CMDB data models. \n Configure workflows, approvals, SLAs, OLAs, escalations and automation rules. \n Provide Level 3 production support, platform administration, upgrades, patching and performance optimisation. \n Work closely with business stakeholders, Solution Architects and Service Management teams to deliver scalable ITSM solutions aligned with ITIL v4. \n Produce ...

Senior Consultant

Hiring Organisation
Jobleads-UK
Location
Reading, England, United Kingdom
Synapse Analytics, Azure SQL and Data Lake technologies . Proven experience implementing Lakehouse, Data Warehouse and Medallion Architecture patterns, including data modelling, governance and performance optimization . Expertise in building scalable data ingestion, transformation and orchestration pipelines, integrating data from cloud, on‐premises and third‐party business systems. Strong … Valley Park, Reading, including a free gym on site and expect our staff to attend at least once per month. Competitive salary and a performance‐based bonus scheme. Comprehensive Benefits Package (Income Protection, Enhanced Pension Scheme (Salary Sacrifice), Life Assurance and Private Medical Care). 25 days holiday (increased ...

iOS Technical Lead – Inside IR35 – Crawley (hybrid)

Hiring Organisation
Jobleads-UK
Location
Crawley, England, United Kingdom
Clean Architecture, etc.) Drive best practices across engineering including TDD, CI/CD, and code quality Oversee API integrations (REST/GraphQL) and ensure performance optimisation Collaborate with cross‐functional teams across product, backend, and DevOps Mentor and lead distributed/offshore engineering teams Required Skills & Experience Strong … Proven experience as a Technical Lead or Senior Engineer with architectural ownership Deep understanding of modern mobile architecture patterns Experience building scalable, high‐performance mobile applications Strong knowledge of API integration (REST; GraphQL is a plus) Experience with modern development practices (CI/CD, TDD, secure coding) Familiarity with ...

Snr Front End Developer

Hiring Organisation
Som3
Location
Milton Keynes, Buckinghamshire, United Kingdom
Employment Type
Contract
Contract Rate
£50000 - £60000/annum
deliver new features, improve existing components and help shape front-end development standards. You will also take ownership of the front-end build pipeline, performance optimisation and our design system. Key Responsibilities Take ownership of the front-end codebase, including maintaining, refactoring and extending UI components. Develop pixel … help improve development standards and component architecture. Collaborate with back-end developers on API integration and data-fetching approaches. Monitor and optimise front-end performance, including Core Web Vitals, bundle size, lazy loading and rendering. Contribute to the ongoing development and maintenance of the product's design system ...

Integration Architect 24 Month FTC

Hiring Organisation
Jobleads-UK
Location
Reading, England, United Kingdom
align with business and technical objectives. The role defines integration platforms, system interactions, data ownership, and interface contracts, while ensuring appropriate levels of security, performance, and resilience. What You’ll Get People are at the heart of what we do here, so it’s essential we provide you with … wide integration solutions. Drive the modernisation of integration platforms by adopting API-first, event-driven and cloud-native architecture patterns, ensuring high levels of performance, security and operational resilience. What You’ll Bring Here at Primark, we want everyone to feel valued – so please bring your authentic self ...

UI Developer - Hybrid

Hiring Organisation
Exposed Solutions
Location
Slough, Berkshire, South East, United Kingdom
Employment Type
Permanent
Salary
£50,000
their flagship product. This isn't a typical front-end web development role. You'll be working on a sophisticated software platform where usability, performance and user experience are critical. You'll collaborate closely with developers, product owners and stakeholders to transform business requirements into elegant, user-friendly solutions. … experience in: Angular JavaScript (ES6+) HTML5 CSS3/SCSS Responsive UI development Building reusable front-end components RESTful API integration Cross-browser compatibility and performance optimisation We're Particularly Interested In People Who... Have experience working on large, complex software applications rather than simple websites. Can translate business ...

Infrastructure Engineer (Need Banking or Financial Services Background)

Hiring Organisation
2MRW GROUP LIMITED
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£70,000 - £75,000 per annum
stability. Supporting and optimising VMware virtual infrastructure across production environments. Maintaining enterprise backup, recovery and disaster recovery capabilities using industry-leading technologies. Monitoring infrastructure performance and proactively resolving capacity, availability and resilience issues. Administering Microsoft 365 services and supporting hybrid infrastructure technologies. Managing Active Directory, Group Policy, identity administration … network and security estate, including: Enterprise switching and routing Firewall administration DNS, DHCP and TCP/IP services Secure remote connectivity Network monitoring and performance optimisation Endpoint protection technologies Vulnerability management Security monitoring platforms Certificate and encryption management Technical Environment You'll have strong experience across most ...

Life Safety Systems Manager

Hiring Organisation
NonStop Consulting
Location
Weybridge, Surrey, United Kingdom
Employment Type
Contract
Contract Rate
£550 - £585/day
life safety systems across the estate. Provide governance, assurance and compliance oversight for critical life safety infrastructure. Lead the management and performance assurance of systems including: Fire detection and alarm systems Fire suppression (gas suppression, sprinklers) Emergency and escape lighting Smoke control and pressurisation systems Oxygen depletion monitoring systems … lifecycle planning, investment decisions and budget planning . Deliver training, guidance and competency development for engineers, contractors and stakeholders. Drive continuous improvement, resilience and performance optimisation across life safety systems. What they are looking for Significant experience managing life safety systems in complex, high-risk or highly regulated ...

Software Engineer - Aerospace - Oxfordshire

Hiring Organisation
Bond Williams Limited
Location
Kidlington, Oxfordshire, South East, United Kingdom
Employment Type
Permanent
company is building a unified software platform that consolidates commercial and internal engineering tools. This platform will accelerate their design exploration, enabling faster performance optimization and rapid scaling for new applications. They are seeking a motivated Software Engineer to develop this platform. Working alongside Aerothermal Designers and Mechanical Engineers ...

Network Infrastructure Manager

Hiring Organisation
Sterling Bridge Limited
Location
Southampton, Hampshire, South East, United Kingdom
Employment Type
Permanent, Work From Home
routing, switching, firewalls, VPNs, WAN/LAN technologies, and network security Experience with cloud platforms and enterprise infrastructure technologies Strong understanding of network resilience, performance optimization, and disaster recovery Excellent stakeholder management and communication skills Experience delivering infrastructure projects and technology improvements Telecoms or Communications industry experience is highly ...

iOS Developer

Hiring Organisation
ARC IT Recruitment
Location
Brighton, Sussex, United Kingdom
Employment Type
Permanent
Salary
GBP 50,000 - 70,000 Annual
principles to write scalable, maintainable code Working with RESTful APIs to integrate app functionality Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation Collaborating with cross-functional teams on exciting projects Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office ...

Mobile Developer

Hiring Organisation
Arc IT Recruitment
Location
Brighton, East Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£50,000 - £70,000 per annum
principles to write scalable, maintainable code Working with RESTful APIs to integrate app functionality Ensuring apps perform smoothly through memory management, multi-threading, and performance optimisation Collaborating with cross-functional teams on exciting projects Nice to have: experience with Android development (Kotlin) Our client offers a vibrant office ...

Principal Software Engineering (Azure and Integration)

Hiring Organisation
Jobleads-UK
Location
Windsor, England, United Kingdom
stakeholders to develop and influence product strategy, using technical insight to identify opportunities that deliver business value. Maintain a strong understanding of business strategy, performance and engineering operating costs, ensuring teams remain focused on product outcomes and strategic objectives. Delivery Lead technical workstreams, helping teams navigate architectural decisions, priorities … access management, data protection, compliance and secure development practices. Proven experience with CI/CD pipelines, environment lifecycle management, observability, monitoring, telemetry and performance optimisation. Excellent stakeholder management, communication and technical documentation skills, with the ability to engage effectively across both technical and business audiences. Desirable Skills & Experience Experience ...