1 to 25 of 82 Part-Time Performance Optimisation Jobs in London

of front-end updates and enhancements for our websites. You will work closely with cross-functional teams to deliver visually appealing, highly functional, and performance-optimised platforms that delight our users. Key Responsibilities Front-End Development : Implement new features, components, and layouts using WordPress, HTML5, CSS3, and JavaScript. Content … Update and maintain website content in alignment with branding and SEO strategies. Responsive Design : Ensure a flawless user experience across all devices and browsers. Performance Optimisation : Optimise website performance, including loading speed, code structure, and accessibility. Collaboration : Work with team members to enhance various aspects of UX … customising WordPress themes or resolving back-end issues. Knowledge of version control systems (e.g., Git). Understanding of Web Core Vitals and Google’s performance metrics. Ability to develop custom WordPress themes and child themes. Qualifications and Experience: Proven track record as a WordPress developer, with a portfolio demonstrating More ❯

on distributed GPU clusters (Slurm, Ray, Kubeflow, or AWS SageMaker). Optimize model‑serving (Triton, vLLM, TorchServe) for low‑latency, high‑throughput inference. Cost & Performance Optimization Track cloud spend, right‑size resources, and introduce autoscaling strategies (Karpenter, Cluster‑Autoscaler, HPA/VPA). Champion FinOps best practices and forecasting. More ❯

Azure, or equivalent). Database & API Management – Design efficient PostgreSQL and MongoDB schemas and develop secure RESTful/GraphQL APIs for seamless data integration. Performance Optimisation. System Architecture & Scalability. Code Review & Quality Assurance. Security Best Practices. Skills and Experience: Essential: Proficiency in JavaScript/TypeScript, React, Node.js, PostgreSQL, and More ❯

experienced UI Developer with a strong background in Azure-based environments and modern authentication frameworks. If you’re passionate about building clean, accessible, high-performance applications — and have hands-on experience with Microsoft Authentication libraries (MSAL), Azure B2C, and OpenID — this could be an excellent opportunity. What You’ll … Ensuring compliance with Government Digital Service (GDS) standards and AA accessibility requirements. Collaborating within Agile teams , contributing to code reviews and technical discussions. Supporting performance optimisation across client- and server-side applications. Working within a multi-pipeline Azure DevOps environment . Building modular, maintainable micro frontends within a … modern testing frameworks: Jest, React Testing Library, Enzyme . Experience working within Agile development teams . Desirable: Involvement in architectural decisions (e.g. micro frontends, performance scaling). Comfortable leading technical discussions or mentoring junior developers. Background delivering consultancy or public sector projects. Why It Matters You’ll join a More ❯

frontend architecture to create intuitive and accessible user interfaces. Work closely with product, design, and engineering teams to build engaging, scalable frontend solutions. Ensure performance optimisation, security best practices, and maintainability. Take ownership of frontend development, setting technical direction and best practices. Collaborate on solving real-world challenges More ❯

office of a global investment bank. This role is part of a major, multi-year transformation program aimed at modernising and scaling a high-performance trading platform. You will be working on a greenfield initiative with significant visibility, contributing to the design and build of next-generation front-end … the most talented technologists in the industry and tackle complex engineering challenges at scale. Key Responsibilities Contribute to the design and development of high-performance, low-latency front-end trading systems using React. Build real-time market data visualisation tools and trading dashboards. Work closely with traders, quants, and … back-end engineers to deliver robust and scalable UI solutions. Participate in architecture discussions and contribute to performance tuning and optimisation. Required Skills & Experience Strong proficiency in React.js and modern JavaScript (ES6+) Deep experience building eTrading front-end applications in a fast-paced environment Knowledge of low-latency design More ❯

Expertise: Plan, design, and oversee the migration of hundreds of databases to the cloud platform. Provide best practices for database architecture, transition strategies, and performance optimization. Ensure minimal disruption to business operations during migration activities. Cloud Database Administration: Manage, monitor, and maintain databases within the cloud environment. Update legacy More ❯

will not be responsible for setting the analytics strategy, they will serve as the second-in-command for all things related to analytics and performance optimisation—helping to embed a data-informed mindset and delivering insights that drive smarter decision-making. With the rollout of a new CRM … is interpreted and applied across the business. Key responsibilities: Deliver high-level analytics insights and strategic guidance to the Data and Analytics Lead, ensuring optimisation initiatives support the Marketing and wider firm objectives Project lead a team of data analysts within the shared service centre, cultivating a high-performance culture focused on innovation and ongoing development. Design and manage performance tracking systems to evaluate the impact of marketing and business development initiatives, highlighting opportunities for optimisation. Collaborate closely with key stakeholders to apply data-driven strategies aimed at enhancing marketing performance, refining client development approaches, and More ❯

s innovative products and services. This is a hands-on position where you'll collaborate with cross-functional teams to streamline deployments, optimize system performance, and ensure robust security and compliance across all environments. Key Responsibilities: Define, build, and maintain cloud infrastructure for production, development, and test environments. Develop … and implement deployment strategies, policies, and standard operating procedures. Select, deploy, configure, and operate alerting and monitoring systems. Optimize system performance and ensure high availability using load balancing, failover strategies, and automated scaling. Implement and maintain security best practices and compliance with industry standards (e.g., GDPR, ISO 27001, SOC … GCP). Hands-on expertise with Infrastructure as Code tools like Terraform. Proficiency in automating deployments using CI/CD workflows. Strong troubleshooting and performance optimisation skills. Bonus: Experience with container orchestration (Docker/Kubernetes) and familiarity with back-end API development. If you’re an innovative DevOps More ❯

cost efficiency. Nice-to-Have · Experience with ML orchestration platforms like MLflow, SageMaker Pipelines, Kubeflow, or similar. · Familiarity with model quantization, pruning, or other performance optimization techniques. · Exposure to distributed training frameworks like Unsloth, DeepSpeed, Accelerate, or FSDP. More ❯

objectives. Effectively communicate and collaborate across matrixed teams, including stakeholders in the UK, India, and US. Set clear goals, provide regular feedback, and conduct performance reviews to ensure team growth and success. Technical Oversight: Oversee and review code to ensure adherence to best practices, performance standards, and quality … guidelines. Develop and maintain features using HTML, CSS, JavaScript, and Vue.js, optimising for speed, scalability, and cross-browser compatibility. Champion web performance optimisation techniques, improving page load times and overall user experience Implement and advocate for SEO best practices and accessibility standards. Technical Expertise: Strong hands-on experience … with HTML5, CSS3, JavaScript (ES6+), and Vue.js. Proven ability to optimise web applications for performance and speed, with a focus on e-commerce or retail platforms. Expertise in code review processes and improving code efficiency across teams. Familiarity with build tools such as Webpack, Vite, or similar, and version More ❯

to-end Google Ads and Microsoft/Bing campaigns with monthly budgets exceeding £1m. Optimize shopping and search ads across multiple markets for maximum performance and relevance. Conduct keyword research and analysis to improve ROI. Performance Optimisation Continuously enhance ad copy, assets, and dynamic elements based on … performance metrics. Utilize Google Analytics and other tools to track, analyze, and drive conversions. Create actionable performance reports to refine future strategies. Strategy & Execution Develop and implement cutting-edge PPC strategies to drive business growth. Set up and launch search ad campaigns across a range of clients and … markets. Monitor campaign performance, identify areas for improvement, and make data-driven adjustments. Embrace a test-and-learn approach, documenting insights and outcomes for future campaigns. Stay ahead of the latest PPC trends and share industry insights. Support SEO efforts and assist with basic website updates. Analyze website traffic More ❯

Design and implement scalable Recommender Systems. Solution development: Translate latest Recommender Systems advances into impactful solutions and products, from MVPs to fully deployed systems. Performance optimisation: Optimise machine learning models for performance in modern environments (e.g., distributed clusters, GPUs). Requirements: Hands on experience: Implemented Recommender System More ❯

for internal tools or customer-facing applications. Model Monitoring & Experiment Tracking: Leverage tools like Weights & Biases (wandb) or MLflow to track experiments, monitor model performance, and ensure continuous improvement. Performance Optimization: Conduct performance tuning and hardware optimization (GPU/CPU) to achieve high throughput and low latency. More ❯

uphold high implementation standards Design and maintain performant, scalable Ruby on Rails services Collaborate with product teams to shape features and roadmap direction Optimise performance, address scalability issues, and influence architecture Champion engineering best practices and standards Key Requirements 5+ years of commercial Ruby on Rails experience 2+ years … in a senior or lead engineering role Familiarity with Heroku Strong infrastructure/DevOps skills Background in performance optimisation and infrastructure scaling Experience mentoring engineers and influencing product strategy Clear communication skills and a collaborative, pragmatic mindset Familiarity with Agile/Kanban delivery processes 💻 Ruby on Rails/ More ❯

public sector is looking for an Infrastructure Engineer with strong AWS and Cloudflare experience to spearhead their technical advancements and ensure the security and performance of their systems to their clients. This role requires a deep understanding of cloud technologies, particularly AWS and Cloudflare, coupled with strong DevOps practices … for security. Ideally holding current UK Security Clearance (SC Cleared) or have held previously. Cloud Architecture and Engineering: DevOps and Automation: Security and Compliance: Performance Optimisation: Migration and Modernisation: Cost Management: Team Leadership and Collaboration: Key Skills - Experience of with Public Sector customers Extensive hands-on experience with More ❯

/Staff/Principal Digital Design Engineers with a strong focus on CMOS digital design to lead the design, validation, and implementation of high-performance digital circuits for our next-generation OTPUs . This role demands deep expertise in digital circuit design, simulation, verification, and implementation. The ideal candidate … will have a strong background in electrical engineering and semiconductor physics, along with a passion for developing reliable, high-performance digital circuits that drive breakthrough AI hardware . Responsibilities Design and develop advanced CMOS digital integrated circuits, including RTL design, schematic capture, simulation, layout, and verification to meet the … performance targets of our OTPU systems. Collaborate closely with cross-functional teams, including optical hardware engineers, to ensure seamless integration of digital circuit blocks within our overall system architecture. Analyse digital circuit performance, identify bottlenecks, and implement innovative solutions to optimise power, speed, and reliability. Mentor junior engineers More ❯

UIs Strong communication skills and the ability to work in a cross-functional team Nice to Have: Experience with CI/CD workflows and performance optimisation Previous experience in a startup or product-focused environment More ❯

Previous experience configuring, deploying, and monitoring applications and websites on AWS. You're comfortable working with relational and NoSQL databases, including complex queries and performance optimisation. Understand web design patterns, including SOLID principle and you have experience working in a collaborative, agile team environment. Familiar with automated testing and More ❯

models, and A/B testing frameworks . Deploy and monitor applications using AWS (EC2, S3, CloudFormation, ECS) . Ensure data security, compliance, and performance optimization. Requirements: 4+ years of experience in software engineering, with a focus on backend development. Experience building analytics and marketing tools (e.g., dashboards, tracking More ❯

low-latency execution. The ideal candidate will have a deep understanding of market microstructure, a strong background in multi-threaded programming, and experience with performance optimisation at the hardware and software level. Duties: Design, develop, and optimize low-latency, high-throughput trading algorithms for equities. Implement and fine … tune high-performance C++ code for electronic trading strategies. Work closely with quants, traders, and infrastructure teams to improve execution quality and trading performance. Utilise profiling tools and performance tuning techniques to ensure ultra-low-latency execution. Monitor and troubleshoot live trading strategies in production. Background: Bachelor’s … programming, including CPU cache optimization, lock-free data structures, and efficient memory management. Experience with network programming (TCP/IP, UDP, multicast) and high-performance messaging frameworks. Familiarity with Linux kernel tuning, real-time scheduling, and system profiling. Strong problem-solving skills and ability to work in a fast More ❯

building robust, scalable infrastructure to support a growing ecosystem of data products and services. What You’ll Be Doing: Designing and developing scalable, high-performance backend services in Go (Golang) Leading the technical direction of key projects, making decisions around architecture, performance and maintainability Integrating multiple external data … in Go, writing clean and maintainable production-grade code Proficiency with PostgreSQL and Redis, or similar relational and in-memory databases Strong understanding of performance optimisation, observability and reliability best practices Excellent communication skills and the ability to convey complex technical concepts clearly Nice to Have: Experience building More ❯

Vision - Develop and communicate a strategic roadmap for architectural improvements across the system. You will shape how technology evolves to meet current and future performance goals. Own System-Level Design - Define the architecture of a highly integrated, modular system. Oversee interface specifications, design principles, and the integration of emerging … technologies. Optimise Performance Across the Platform - Collaborate with product, research, and engineering teams to identify key performance areas, create improvement plans, and deliver enhancements that meet demanding precision and efficiency targets. Enable Cross-Functional Innovation - Act as a technical bridge between software, hardware, and application development teams, ensuring … technical discipline Substantial experience in systems architecture or design within complex, high-tech environments A deep understanding of modular system design, interface specification, and performance optimisation Experience guiding long-term technical development through roadmaps and improvement planning The ability to lead technical conversations across teams and influence direction More ❯

engineering management on technical strategy and roadmap planning. Contribute to product decisions, working closely with product managers to shape feature development. Identify and address performance bottlenecks and scalability challenges. Participate in architectural discussions and help set engineering standards. Technology: My client’s application is built on a Ruby on … and proven patterns that let them move quickly while maintaining stability and predictability. They leverage Cloudflare’s ecosystem to solve real challenges, from asset optimisation to SSL management and intelligent queue management. Their frontend approach combines modern ViewComponents and Hotwire with clear ERB views, giving them reactivity without complexity. … years in a team lead or tech lead role. Proven track record of mentoring and developing engineering talent. Strong understanding of web application performance optimisation techniques. Experience with scaling applications and managing platform infrastructure. Excellent communication skills with the ability to explain complex technical concepts clearly. Demonstrated ability More ❯

shine. Key Responsibilities Content Creation & Strategy - Develop high-quality content (blogs, whitepapers, case studies, email campaigns, and social media) aligned with marketing goals. SEO & Performance Optimisation - Implement best practices, conduct keyword research, and track content performance to drive growth. AI & Automation - Use AI-driven tools to enhance … content marketing, SEO, or digital strategy. Exceptional writing and storytelling skills with a focus on high-converting content. Data-driven mindset, comfortable analysing content performance and refining strategies. Familiarity with AI-powered content tools and marketing automation. Creative, organised, and able to thrive in a fast-paced, high-growth More ❯