1 to 25 of 34 Performance Optimisation Jobs in the South East

to deliver the best possible customer experience, with a focus on security, usability, and accessibility. Conduct and participate in code reviews, considering functional and non-functional requirements such as performance, resiliency, maintainability, and security. Promote continuous improvement in team effectiveness and culture, supporting changes that enhance productivity and happiness. Build a collaborative environment, coaching and mentoring less experienced engineers. … code principles, design patterns, distributed systems, software testing, CI/CD, and Agile methodologies (Scrum/Kanban). Knowledge of application security. Additional desirable skills: SQL, GraphQL, Maven Frontend performance optimisation API security and secure coding best practices Git release strategies Nice to have: Postgres, DynamoDB, Kubernetes, GitHub Actions, Feign, Quarkus. Proven track record in: Delivering well-optimised More ❯

CRO Analyst - Digital Experience & Optimisation Brighton or London (hybrid flexibility) £35,000 - £45,000 + Bonus + Unlimited Holiday + Training Budget The Opportunity A fast-growing, entrepreneurial digital business is looking for a Conversion Rate Optimisation (CRO) Analyst to join its high-performing team. Working across a broad portfolio of ambitious brands, you'll take ownership of … part of a dynamic, collaborative environment that values bold ideas, clear thinking, and real results. The Role This is a hands-on, strategic CRO role focused on delivering tangible performance improvements across digital experiences. You'll work closely with data, performance, UX, creative, and tech stakeholders to identify opportunities, build test hypotheses, and implement changes that improve conversion … research findings into wireframes, user flows, and annotated mockups using tools like Figma, InVision, or Adobe XD. Present insights and CRO roadmaps to internal stakeholders and senior leadership. Maintain performance dashboards and clearly communicate testing results, impact, and confidence intervals. Stay up to date with CRO trends, UX psychology, and testing technologies. Use front-end development skills (HTML, CSS More ❯

solutions, including data models, dashboards, and reports Develop datasets, measures (DAX), and visuals to support business insights Maintain data accuracy, integrity, and security within the Power BI environment Optimise performance of reports and dashboards for a seamless user experience Implement Power ON configurations, including workspaces, security, and sharing policies Effort Estimation & Project Delivery Adhere to project budgets and timelines … Acceptance Testing) and gather feedback for refinements Client Training & Support Conduct training sessions for end-users to drive adoption of Power ON solutions Provide post-implementation support, troubleshooting, and performance tuning Act as a trusted advisor to clients on Power ON strategies and future enhancements Qualifications Preferred Qualifications & Experience: Bachelor’s or Master’s degree in Mathematics, Computer Science … Azure Data Factory, Azure SQL) Knowledge of Power Automate and Power Apps integration with Power BI Knowledge of non-Microsoft data sources (Snowflake, Oracle, PostgreSQL, MySQL, Synapse, Big Query) Performance optimisation (Partitioning, Understanding of columnar database concept, SQL indexing) Troubleshooting (SQL Profiler or other profiler tools, Tabular Editor, DAX Studio, Power BI datasets, RLS security) Additional Information All More ❯

solutions, including data models, dashboards, and reports Develop datasets, measures (DAX), and visuals to support business insights Maintain data accuracy, integrity, and security within the Power BI environment Optimise performance of reports and dashboards for a seamless user experience Implement Power ON configurations, including workspaces, security, and sharing policies Effort Estimation & Project Delivery Adhere to project budgets and timelines … Acceptance Testing) and gather feedback for refinements Client Training & Support Conduct training sessions for end-users to drive adoption of Power ON solutions Provide post-implementation support, troubleshooting, and performance tuning Act as a trusted advisor to clients on Power ON strategies and future enhancements Qualifications Preferred Qualifications & Experience: Bachelor’s or Master’s degree in Mathematics, Computer Science … Azure Data Factory, Azure SQL) Knowledge of Power Automate and Power Apps integration with Power BI Knowledge of non-Microsoft data sources (Snowflake, Oracle, PostgreSQL, MySQL, Synapse, Big Query) Performance optimisation (Partitioning, Understanding of columnar database concept, SQL indexing) Troubleshooting (SQL Profiler or other profiler tools, Tabular Editor, DAX Studio, Power BI datasets, RLS security) Additional Information All More ❯

world hardware. Shape how things are done – join early enough to influence architecture, tools, and best practices. Build for growth – contribute to a system that’s scaling rapidly, where performance and stability matter. Be a voice, not a cog – work closely with an elite group of product, hardware and software engineers where your opinions count. What You’ll Be … Experience (or Areas You’ll Grow Into) Working with distributed systems or IoT-style devices. Building internal tools or observability dashboards. Firmware, device protocols, or embedded development exposure. Systems performance optimisation or memory/latency tuning. Python frameworks like FastAPI or similar. Any work in telemetry, edge computing, or robotics. The Perks Competitive salary and meaningful equity Hybrid More ❯

world hardware. Shape how things are done – join early enough to influence architecture, tools, and best practices. Build for growth – contribute to a system that’s scaling rapidly, where performance and stability matter. Be a voice, not a cog – work closely with an elite group of product, hardware and software engineers where your opinions count. What You’ll Be … Experience (or Areas You’ll Grow Into) Working with distributed systems or IoT-style devices. Building internal tools or observability dashboards. Firmware, device protocols, or embedded development exposure. Systems performance optimisation or memory/latency tuning. Python frameworks like FastAPI or similar. Any work in telemetry, edge computing, or robotics. The Perks Competitive salary and meaningful equity Hybrid More ❯

.Net with a heavy focus on the front end. The work will be split 50/50 between Angular V18 and .Net. Experience/Skills: Angular - version 18+ (RxJs, performance optimisation, design patterns) .Net V8/C# Azure DevOps Azure experience (Functions, DevOps, Databricks, Data Factory) Industry experience within financial services Highly Desirable experience with AI/ML More ❯

front-office trading environments). Solid understanding of market data, eFX, or time-series data. Experience building dashboards, reporting tools, or data visualisations. Knowledge of distributed systems, resiliency, and performance optimisation. Proficiency in at least one other programming language (e.g., Python, Java, C++) is desirable. Strong problem-solving and analytical skills, with the ability to work under pressure in More ❯

where you'll work directly with Quants and Traders to engineer ultra-low-latency trading systems . You'll combine advanced Java engineering with strategic input into platform architecture, optimisation, and scalability -delivering business-critical solutions used daily in electronic trading. What You'll Be Working On Designing and building low-latency, multi-threaded Java applications for market making … Developing and optimising pricing algorithms, order management, and execution logic . Engineering algo containers and ultra-low-latency applications using TCP/IP, UDP, and GC tuning. Driving automation, performance optimisation, scalability, and resilience across platforms. Leading complex technical initiatives across multiple feature teams. Partnering closely with front-office stakeholders to deliver impactful trading technology. What We're … Looking For Deep expertise in Java with proven experience in ultra-low-latency, high-performance systems . Strong background in electronic trading (ideally eFX) with pricing engines, algos, or order management systems. Skilled in multi-threading, GC tuning, TCP/UDP protocols , and performance optimisation. Experience with test-driven development, automation frameworks , and Agile/DevOps. Ability to More ❯

Define and evolve event-driven architectures and messaging strategies to power automation and connectivity across the enterprise. Provide technical leadership for large-scale, complex applications - from conceptual design to performance optimisation. Influence strategic decisions across cloud-native , SaaS , and on-premises environments. Collaborate with senior stakeholders, delivery teams, and other architects to ensure alignment with business objectives. Support proof More ❯

of ours in the media space are seeking an experienced Senior Full Stack Web Developer to play a key role in the design, development, and delivery of innovative, high-performance web applications. This position is central to the ongoing evolution of our programmatic and data-driven integration platforms, with a focus on scalability, reliability, and clean architecture. You will … with a primary focus on React.js for front-end development and Node.js for back-end services. You'll manage complex data flows in PostgreSQL , utilize Redis for caching and performance optimization, and implement robust messaging systems such as Kafka . The role also includes responsibility for CI/CD pipelines, ensuring seamless deployment across multiple environments. This is an … Key Responsibilities Lead the design and development of dynamic, responsive web applications using React.js , Node.js , and related technologies. Build and optimize PostgreSQL databases, including schema design, complex queries, and performance tuning. Implement and manage Redis for caching, session management, and real-time data access. Develop and maintain CI/CD pipelines to support efficient and reliable code delivery across More ❯

Develop multi-touch attribution models and support data strategy development Collaborate with internal teams and external partners to deliver seamless campaign reporting Drive continuous improvement through automation, testing, and performance optimisation Identify opportunities for personalisation and enhance data processes for better decision-making Skills & Experience Required: Proven experience in digital analytics with knowledge of CRM, loyalty programs, social … media, and performance marketing Strong knowledge of analytics platforms and marketing technology tools, especially Adobe and Salesforce Expert user of Adobe Analytics Experience with data visualisation tools like Tableau or Power BI Excellent communication skills with the ability to influence stakeholders at all levels Benefits £400-£450 per day inside IR35, London based, 2-3 days per week in More ❯

batch data flows to support AI-driven applications. Collaborating with AI engineers to ensure data readiness for model training and inference. Driving best practices in data governance, security, and performance optimisation. What We're Looking For Strong experience with Azure cloud services, especially Data Factory, Synapse, Databricks, and Azure Functions. Proficiency in Python, SQL, and data transformation techniques. Experience More ❯

Kanban). Proficient with CI/CD tools and practices. Track record of leading teams or making key technical decisions on mobile projects. Demonstrable knowledge of REST APIs and performance optimisation. Committed to accessibility standards and inclusive design. Why Join? Flexible hybrid working: Work remotely with occasional visits to the office Opportunities for continuous learning, growth, and internal mobility. More ❯

Kanban). Proficient with CI/CD tools and practices. Track record of leading teams or making key technical decisions on mobile projects. Demonstrable knowledge of REST APIs and performance optimisation. Committed to accessibility standards and inclusive design. Why Join? Flexible hybrid working: Work remotely with occasional visits to the office Opportunities for continuous learning, growth, and internal mobility. More ❯

and experience we are looking for: Advanced proficiency in Power BI (essential), including dashboards, DAX, Power Query, and complex data modeling Strong SQL skills for data extraction, transformation, and performance optimisation (essential) Solid understanding of data warehousing principles such as star and snowflake schemas, as well as ETL processes Experience in designing and implementing semantic and tabular models More ❯

Role Summary We are seeking a highly skilled VMware Engineer for our high profile public sector Client on a contract basis. The Engineer specialist will support the deployment and optimisation of VMware Cloud Foundation (VCF) within the CNI Platform , a secure, airgapped infrastructure. They will lead VCF implementation with a focus on integration with Cisco ACI and Pure Storage … an airgapped setup. Security & Compliance : Leverage Cisco ACI's security capabilities-including policy-based segmentation and traffic control-to enforce strict access controls and compliance within the airgapped environment. Performance Optimisation : Monitor and fine-tune virtual infrastructure for reliability and efficiency. Documentation & Handover : Produce detailed implementation documentation and support knowledge transfer to internal teams. Stakeholder Collaboration : Liaise with More ❯

flow and similar tools Experience in back-end web development, including advanced experience with Python, Hack, PHP, and similar tools Experience with interactive data visualization, media usage functionality, browser performance optimization, constrained network functionality and end-user Ability to lead independently, work with scientific data, and collaborate closely with research and design teams. Please feel free to contact myself More ❯

the Role: We are seeking aSenior-Level Java Engineerto join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and enhancing high-performance, scalable financial applications. This is a fantastic opportunity for an ambitious developer with experience in Java and a passion for the financial sector. The role follows a hybrid working … Design, develop, and maintain high-quality Java-based applications for financial services. Collaborate with cross-functional teams to deliver robust and scalable software solutions. Ensure code quality, security, and performance standards are met. Work on both greenfield and existing applications, improving architecture and implementing best practices. Troubleshoot and resolve complex technical issues. Participate in code reviews and provide constructive … Area 5+ years of experience in Java development (Java 8 or later). Experience with Spring Boot, Microservices architecture, and RESTful APIs. Strong understanding of multi-threading, concurrency, and performance optimization. Knowledge of SQL and database technologies (PostgreSQL, MySQL, or similar). Experience with messaging systems (Kafka, RabbitMQ) is a plus. Exposure to cloud platforms such as AWS, Azure More ❯

the Role: We are seeking aSenior-Level Java Engineerto join a dynamic financial technology team in London. You will play a key role in developing, maintaining, and enhancing high-performance, scalable financial applications. This is a fantastic opportunity for an ambitious developer with experience in Java and a passion for the financial sector. The role follows a hybrid working … Design, develop, and maintain high-quality Java-based applications for financial services. Collaborate with cross-functional teams to deliver robust and scalable software solutions. Ensure code quality, security, and performance standards are met. Work on both greenfield and existing applications, improving architecture and implementing best practices. Troubleshoot and resolve complex technical issues. Participate in code reviews and provide constructive … Area 5+ years of experience in Java development (Java 8 or later). Experience with Spring Boot, Microservices architecture, and RESTful APIs. Strong understanding of multi-threading, concurrency, and performance optimization. Knowledge of SQL and database technologies (PostgreSQL, MySQL, or similar). Experience with messaging systems (Kafka, RabbitMQ) is a plus. Exposure to cloud platforms such as AWS, Azure More ❯

technical vision of this business and work on their product from an early stage. What you'll work on: Backend APIs (Python/FastAPI): Build and maintain secure, high-performance services that drive AI features and data access at scale. RAG & vector search: Design and improve retrieval pipelines (embeddings, chunking, hybrid search, ranking, feedback loops), owning schema design, latency … platform on AWS (ECS), separating ingestion, retrieval, reasoning, and delivery. Quality & reliability: Ensure reliability through testing, CI/CD, observability (metrics/tracing for LLM and retrieval paths), and performance optimisation. Collaboration: Partner with product and leadership teams, mentor peers, and play a role in shaping technical direction. Innovation: Explore and recommend new technologies, frameworks, and methods for both More ❯

and support enterprise Wintel environments (Windows Server 2016/2019/2022) and RHEL infrastructure. Monitor and manage storage infrastructure (SAN/NAS), including provisioning, tiering, capacity planning, and performance optimization. Support backup, recovery, and high-availability strategies across platforms. More ❯

and support enterprise Wintel environments (Windows Server 2016/2019/2022) and RHEL infrastructure. Monitor and manage storage infrastructure (SAN/NAS), including provisioning, tiering, capacity planning, and performance optimization. Support backup, recovery, and high-availability strategies across platforms. More ❯

and support enterprise Wintel environments (Windows Server 2016/2019/2022) and RHEL infrastructure. Monitor and manage storage infrastructure (SAN/NAS), including provisioning, tiering, capacity planning, and performance optimization. Support backup, recovery, and high-availability strategies across platforms. More ❯

libraries, and content types Knowledge of SharePoint permissions and user context Familiarity with PnP JS library for SharePoint operations Additional Desirable Technical Skills: Advanced React: Hooks, context, state management, performance optimization Build Tools: Azure DevOps, GitHub Actions, CI/CD pipelines Testing: Integration testing, end-to-end testing with Playwright/Cypress Performance: Code splitting, lazy loading, bundle More ❯