1 to 25 of 73 Performance Optimisation Jobs in the City of London

Google Cloud Platform (GCP) and Apigee to design and implement robust API solutions. With a strong focus on cloud infrastructure, API security, and performance optimisation, you will ensure seamless integration across enterprise systems. Your role will be pivotal in driving innovation within telecom domain projects, contributing to business … deployment and management of Anthos Service Mesh to enhance service connectivity and security. Lead cloud infrastructure projects ensuring robust and scalable solutions. API Management & Optimisation: Provide technical guidance on Apigee OPDK and Apigee X for optimised API management and performance. Develop and maintain Apigee Developer Portal and Apigee Edge ...

development projects from design through to delivery Provide technical leadership via architecture decisions, code reviews, and mentoring Ensure best practices across CI/CD, performance optimisation, security, and accessibility Collaborate with clients, Product Managers, and Business Analysts to align technical solutions with business goals Support, inspire, and develop … Developer, or similar role delivering complex Shopify projects Familiarity with modern theme build tools such as Vite.js or Webpack Strong understanding of scalable architecture, performance optimisation, and accessibility standards Experience with DevOps workflows, GitHub, and modern CI/CD pipelines Excellent communication and leadership skills Perks & Benefits Fully ...

institutional-grade liquidity and technology. About the Role We are seeking a highly capable Senior Web Developer to lead the design, development, and optimisation of high-performance websites and digital experiences that support product launches, marketing campaigns, and customer acquisition. This role combines strong technical execution with performance … capture forms, webinar registration pages, and product demo request pages Ensure all product pages are optimized for search engine visibility and user engagement Website Performance & Infrastructure for Launch Ensure website infrastructure can handle significant traffic increases during product launch periods Implement performance monitoring to maintain sub-2-second ...

internal engineering practices What We’re Looking For Strong hands-on software engineering experience in Kotlin (Backend) Solid understanding of JVM internals, concurrency, and performance optimisation Experience building distributed systems, microservices, or event-driven architectures Knowledge of frameworks such as Spring Boot , Micronaut , or Ktor Familiarity with cloud ...

system and theming strategies. Collaborate with back-end engineers: to define API contracts and best practices for consumption, asking relevant questions about scalability and performance, while pragmatically leveraging the strengths and addressing the weaknesses of both front-end and back-end systems System Development: Develop efficient and reusable front … systems and abstractions to ensure a scalable and maintainable codebase Performance Optimisation: Optimise application performance to deliver a high-quality UX Industry Trends & Best Practices: Stay up-to-date with emerging trends and best practices in front-end development, particularly in the fintech industry Code Review & Quality ...

reviews, write unit tests, and ensure adherence to development standards Work collaboratively within Agile teams, contributing to sprint planning and estimations Support bug fixing, performance optimisation, and integration testing Release & Deployment Provide build and release documentation to DevOps and QA teams Support smooth deployment cycles and quality assurance ...

microservices, event-driven architectures, APIs, serverless and containerised workloads. Drive high-quality engineering standards including automated testing, TDD/BDD, CI/CD, observability, performance optimisation and security. Support DevOps maturity by ensuring robust pipelines, IaC, automated deployments, and consistent cloud environments. Provide mentorship, coaching, and capability uplift ...

feature extraction, transformation, and model training. Deployment & Monitoring: Implement models into production environments using MLOps best practices (CI/CD, containerization, monitoring). Performance Optimization: Continuously improve model accuracy, latency, and scalability. Collaboration: Work cross-functionally with product managers and engineers to align ML solutions with business objectives. Documentation ...

Node.js, TypeScript, React , and modern cloud engineering Hands-on experience with AWS serverless , particularly Lambda, Step Functions, DynamoDB Solid understanding of scalable architecture and performance optimisation Experience in scale ups, startups, or SMEs where speed, ownership, and adaptability matter Strong debugging, problem solving, and delivery skills Interest ...

with your primary focus on: 🌳 SPA architecture and front-end design - VUE.JS, Angular, Javascript, React.JS 🌳 Complex, data-rich user interfaces 🌳 Modern JavaScript frameworks 🌳 Usability, performance, and maintainability at scale You’ll still collaborate closely with backend engineers, but your ownership sits firmly on the UI and client-side experience … . Teams may focus on: 🌳 Major UI modernisation initiatives 🌳 New front-end modules and workflows 🌳 Large DOM/high-interaction interfaces 🌳 Performance optimisation and UX refinement 🌳 Design system evolution and component architecture Focus areas rotate annually, offering long-term growth and variety. What You’ll Do 🌳 Lead ...

that’s redefining the future of finance through technology. They are looking for a Front-End React Engineer who’s passionate about clean design, performance, and scalability, someone who thrives on combining creativity with technical precision. The Opportunity You’ll join a dynamic development team, responsible for building … REST APIs . Experience working in a cloud-native environment ( AWS or Azure ). Familiarity with data streaming (WebSockets, chunked responses) and front-end performance optimisation . Strong understanding of testing frameworks (unit, integration, E2E) - Playwright experience a plus. Bonus points for knowledge of Material UI or other ...

pension, private healthcare, gym membership, hardware budget London (Hybrid – 2 days WFH) A high-growth software company is building the next generation of high-performance UI frameworks and data-intensive visualisation technology. Their products power mission-critical applications used by global enterprises, financial institutions, and technology firms, relied … hire engineers who enjoy working close to the metal of the browser, solving problems that demand a deep understanding of algorithms, runtime behaviour, and performance at scale. This is not typical web development. It’s engineering at the limits of what modern browsers can do. What you’ll work ...

technical direction for the front-end, champion best practices, and still enjoy being hands-on. Someone who obsesses over clean design, performance and scalability, and is comfortable leading from the front. The Opportunity You’ll be the go-to technical leader for front-end engineering within a cross-functional … reviews – and your voice will carry weight in how the platform evolves. What You’ll Do Lead the design and development of complex, high-performance React applications using React, TypeScript and modern front-end libraries. Define and drive front-end architecture, standards and best practices , ensuring quality, consistency ...

join a company where your work genuinely matters. This is a role for engineers who are passionate about React , committed to building intuitive, high-performance interfaces, and excited about delivering cross-platform experiences using React Native . You'll play a key role in shaping the UI across both … design system. The team values engineers who are curious, collaborative, and eager to explore new ways of solving complex challenges, whether that’s improving performance, enhancing accessibility, or leveraging tools like Storybook, Vite, and cutting-edge AI workflows. As a senior engineer, you’ll help define the future ...

C++ Developer We are a fast-growing, technology-driven brokerage specialising in high-performance trading systems and low-latency market connectivity. Our team builds robust, scalable, mission-critical software that powers real-time trading across global markets. We are looking for a talented C++ Developer to join our engineering … business at the forefront of the industry. The Role As a C++ Developer, you will play a key role in the design, development, and optimisation of our trading and market-data platforms. You’ll work closely with traders, quantitative analysts, and other engineers to build highly performant solutions that ...

SageMaker, EKS, batch & Real Time inference. Data pipelines: Spark/SQL, orchestration (Airflow), monitoring for drift/perf. Nice to Have Cost/performance optimisation on AWS; GPU scheduling; quantisation/distillation. Experience working within Financial Services engineering standards and governance. IND_PC3 Guidant, Carbon60, Lorien ...

heads-down coder” type. Top 4 Core Skills Python — workflow automation, data processing, and ETL/ELT development. Snowflake — scalable data architecture, performance optimisation, and governance. SQL — expert-level query writing and optimisation for analytics and transformations. dbt (Data Build Tool) — modular data modelling, testing, documentation ...

Responsibilities Strategy & Roadmap: Define and own the roadmap for Card Payments and Failed Payment Recovery, ensuring alignment with commercial priorities and regulatory compliance. Performance Optimisation: Proactively dive into payment performance data to identify friction points, uncover issuer behaviours, and design experiments to maximise authorisation rates. Intelligent Solutions ...

data fabric platform. This platform underpins critical data flows, analytics, and operational systems for a global investment bank. You will work in a high-performance environment, collaborating with cross-functional teams to ensure the seamless integration, processing, and availability of enterprise data. The role will involved a good … house data fabric using C#. • Data Integration: Build APIs and services to enable seamless data exchange across trading systems, risk engines, and analytics platforms. • Performance Optimization: Enhance the performance of data pipelines, ensuring low-latency processing for real-time analytics and decision-making. • Architecture Design: Contribute ...

requirements into scalable, maintainable code Collaborate with product managers, designers, and engineers to deliver end-to-end solutions Solve complex challenges related to scalability, performance, and reliability Contribute to engineering best practices, tooling, and processes Required Experience 3+ years of experience building full-stack applications Experience developing enterprise SaaS … ORMs (e.g., Sequelize) Strong frontend experience with React and modern UI frameworks Experience working with relational (MySQL) and NoSQL databases Strong debugging, troubleshooting, and performance optimisation skills Technical Skills Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL ...

Fixed Income eTrading including Rates, Credit, and Bonds. You'll work closely with world-class technologists and domain experts to deliver scalable, high-performance UIs that support real-time trading and analytics. Key Responsibilities Design and develop responsive, low-latency front-end trading systems using React. Build dashboards … data and trade execution. Collaborate with traders, quants, and back-end engineers to deliver seamless UI experiences. Contribute to architectural decisions and front-end performance tuning. Required Skills & Experience Expertise in React.js and modern JavaScript (ES6+) Proven experience delivering front-end applications in electronic trading environments Strong understanding ...

office facing, equity technology team building a world class suite of trading tools to support the trading of equity products. Focus will be on performance optimisation, reliability, scalability and building world class distributed systems. This is a senior role so we do need 8+ years experience and experience ...

providing Python-based solutions that directly impact the profitability of the business. This is an exciting opportunity to work in a fast-paced, high-performance environment where you can push the boundaries of technology in financial markets. Key Responsibilities: Design, develop, and maintain highly efficient Python-based applications … commodities trading, risk management, and real-time data analysis. Build scalable, high-performance data pipelines to process large datasets from multiple sources, including real-time market data and fundamental data. Implement robust APIs and microservices to integrate trading systems, analytics platforms, and external data providers. Optimize performance ...

including Firestore, Realtime Database, Authentication, or Cloud Functions. Familiarity with REST APIs, serverless architectures, and cloud-based development. Solid understanding of frontend best practices, performance optimisation, and responsive design. Excellent problem-solving skills and a collaborative mindset. Nice to have: Experience with TypeScript, Redux, or other state management ...

strategy that drives engagement, conversion, and growth. Oversee the design, training, and deployment of search and recommendation models — from data strategy to monitoring and performance optimisation. Collaborate with platform and MLOps teams to ensure robust, efficient, and scalable ML workflows (including CI/CD, feature management, and monitoring). ...