51 to 75 of 96 Performance Optimisation Jobs in Central London

experience # Nuxt.js (v2 and ideally v3/v4) expertise # Tailwind CSS skills (design-driven UI builds) # Background in E-Commerce/large-scale digital products # Performance optimisation + accessibility awareness This contract will offer a great opportunity to join a global brand in the upgrade of their modern web applications. It will open the More ❯

v16–v19+). Build and maintain integrations between Endur and internal/external systems. Collaborate with business analysts, traders, and risk teams to deliver technical solutions. Support release cycles, performance optimisation, and DevOps practices. Contribute to ongoing digital transformation and trading platform modernisation initiatives. Key Skills & Experience Strong experience in Endur development (v16+). Expertise in JVS, .NET More ❯

have managed complex, Global products. Read on for more details Experience required: Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs, writing detailed user stories More ❯

have managed complex, Global products. Read on for more details Experience required: Technical proficiency:Familiarity with Azure services (e.g., Data Lake, Synapse, Fabric) and Databricks for data engineering, analytics, performance optimisation, and governance. Experience with implementing and optimising scalable cloud infrastructure is highly valued. Backlog management:Demonstrated expertise in maintaining and prioritizing product backlogs, writing detailed user stories More ❯

has a significant backlog of products to onboard , so they are looking for a developer who can deliver immediate impact — coding, configuring, and optimising Endur to ensure scalability and performance when upgrading them from version 18 to 25. As a C# Developer focusing on Endur, you’ll work closely with business users, analysts, and other technologists to deliver solutions … Experience Required: 7+ years of hands-on C# development, specifically in .Net Core. Exposure to working on OpenComponents or AVS is a bonus but not necessary. Strong experience with performance optimisation and good logic within C#. Previous experience in ETRM development , ideally across physical commodities , ideally gas and power. Experience working in hybrid BA/Dev teams delivering More ❯

will drive their front end solution and will have 5-8 years experience working as Front End Engineer. This will be developing UI components in Typescript, working on web performance optimisation, ensuring code quality through unit testing. Experience integrating frontend components with Headless CMS. The role is hybrid with 2-3 working days in their central London office. More ❯

role, you will: Own the evolution and scaling of our backend infrastructure Design and implement performant APIs and services Build infrastructure to support cutting-edge AI capabilities Optimise database performance and query efficiency Continuously improve reliability and observability through enhanced monitoring and alerting Collaborate cross-functionally to ensure our infrastructure supports continuous product innovation Your background looks something like … code (we build on AWS using Terraform) Deep knowledge of relational databases (we use PostgreSQL) Familiarity with serverless architectures (we love lambdas!) Solid understanding of security best practices and performance optimisation As a person, you... Are first and foremost a builder Are excited to work in-person from our office in London (most of the time) Love working More ❯

experience) London Our Client An established UK communications infrastructure provider is looking for a Design Engineer specialising in IP networking, Ethernet, and Wi-Fi systems. Known for delivering high-performance solutions in complex, large-scale environments, the company works across sectors to design, install, and commission advanced connectivity systems. Their approach combines technical precision, robust engineering practices, and a … focus on long-term reliability, enabling them to deliver projects that meet demanding performance and security standards. The Role The Design Engineer will be responsible for developing detailed technical designs, specifications, schedules, CAD drawings, and documentation for IP networking and wireless communication systems. The role covers the full lifecycle from site survey to commissioning, ensuring network infrastructure meets capacity … availability, and security requirements. Key responsibilities include network modelling, capacity planning, performance optimisation, and overseeing commissioning activities. The successful candidate will work closely with internal teams and external partners to deliver innovative, fit-for-purpose networking solutions for high-profile projects. The ideal candidate will have a strong track record in IP network design and delivery, with experience More ❯

and retraining of machine learning models in Azure. • Data Pipelining: Build and optimize scalable data pipelines for ingesting, transforming, and preparing large datasets for AI model training and inference. • Performance Optimization: Optimize AI models and their serving infrastructure for performance, cost-efficiency, and scalability. • Collaboration: Work collaboratively with data scientists to operationalize models, provide feedback on model design More ❯

CI/CD pipelines , write automated tests, and ensure code quality and consistency through reviews and best practices. Support deployment and operations on cloud platforms (AWS) , focusing on reliability, performance, and cost optimization. Troubleshoot production issues, monitor system health, and contribute to continuous improvement initiatives. Skills Mandatory Skills Strong programming skills in Python and JavaScript (Node.js and React) . … Hands-on experience with MongoDB (schema design, indexing, and performance optimization). Solid understanding of microservice architecture and 12-Factor App methodology . Familiarity with CI/CD tools , Docker , and Git-based workflows . Proficiency in designing, consuming, and securing RESTful APIs . Good understanding of software design principles , testing frameworks , and code maintainability practices . Nice to … state management frameworks (Redux, Zustand). Knowledge of DevOps concepts , infrastructure-as-code (Terraform/CloudFormation), and container orchestration (ECS) . Awareness of security , authentication (OAuth/JWT) , and performance monitoring best practices. More ❯

12+ years of experience. - Lead the development, testing, and maintenance of low-latency Java applications. - Collaborate with cross-functional teams to gather requirements and design system architecture. - Optimize application performance and troubleshoot latency issues. - Mentor junior developers and ensure adherence to best coding practices. - Participate in code reviews and provide constructive feedback. - Stay updated with the latest industry trends … Bachelor's degree in Computer Science, Engineering, or a related field. - Proven experience in Java development, with a focus on low-latency systems. - Strong understanding of multithreading, concurrency, and performance optimization. - Experience with frameworks and libraries such as Spring, Hibernate, and Netty. - Familiarity with distributed systems and network protocols. - Excellent problem-solving skills and attention to detail. - Effective communication More ❯

zero-knowledge modules that enable trustless Bitcoin vaults and zk light-client operations. Lead the architecture and implementation of zkVM systems, including circuit design, data interfaces, proof pipelines, and performance optimization. Implement and enforce security best practices across zkVM programs. Requirements: Demonstrated expertise in Rust programming. Proven experience delivering zero-knowledge systems or infrastructure to production. Extensive practical experience More ❯

with data scientists, analysts, and software engineers to ensure seamless data integration and availability for predictive modeling and business intelligence. Optimize data storage and processing in Azure environments for performance, reliability, and cost-efficiency. Implement best practices for data modeling, governance, and security across all platforms. Troubleshoot and enhance existing pipelines to improve scalability and resilience. Sample Projects You … real-world environment, we’d love to hear from you. Strong technical foundation: Degree in a STEM field (or equivalent experience) with hands-on experience in production environments, emphasizing performance optimization and code quality. Python expertise: Advanced proficiency in Python for data engineering, data wrangling and pipeline development. Cloud Platforms : Hands-on experience working with Azure. AWS experience is … considered, however Azure exposure is essential. Data Warehousing: Proven expertise with Snowflake – schema design, performance tuning, data ingestion, and security. Workflow Orchestration: Production experience with Apache Airflow (Prefect, Dagster or similar), including authoring DAGs, scheduling workloads and monitoring pipeline execution. Data Modeling: Strong skills in dbt, including writing modular SQL transformations, building data models, and maintaining dbt projects. SQL More ❯

with the frontend team to integrate frontend components with server-side logic. Work with database administrator to ensure optimal data storage and retrieval. Optimize server applications for maximum speed, performance, and scalability. Troubleshoot and debug server issues, providing timely solutions. Implement security and data protection measures. Keep up to date with emerging trends, technologies, and best practices in backend … service technologies. Understanding of DevOps practices and CI/CD pipelines. Familiarity with testing frameworks and test-driven development. Security awareness and the ability to implement security best practices. Performance optimization and profiling skills. Experience with Azure cloud computing platforms. Knowledge of version control systems, such as Git. Knowledge of containerization technologies (Docker, Kubernetes) is advantageous. Able to work More ❯

Apigee or AWS knowledge to bridge the gap between development and operations, focusing on automating workflows, optimizing CI/CD pipelines, and ensuring reliable software deployment. Manage infrastructure, monitor performance, and collaborate across teams to maintain scalable, secure, and resilient systems. We are seeking a highly skilled and security-conscious Platform Engineer to join our team. The ideal candidate … standards. Platform Maintenance & Upgrades: Regularly audit and upgrade software packages, libraries, and dependencies used in GitHub repositories and across the platform. Maintain up-to-date infrastructure components to ensure performance, reliability, and security. Automate upgrade workflows using CI/CD pipelines and infrastructure-as-code tools. Infrastructure & DevOps: Hands-on experience with Terraform and Ansible for infrastructure provisioning and … Hands-on experience with Docker for containerizing applications and managing secure container environments. API Management & Analytics: Strong knowledge of Apigee or similar API Management platforms. Implement API design patterns, performance optimization, and custom analytics reporting for API consumption and error tracking. System Architecture: Deep understanding of build and deployment methodologies for distributed systems. Experience with enterprise-grade applications and More ❯

Engineer with Apigee knowledge to bridge the gap between development and operations, focusing on automating workflows, optimizing CI/CD pipelines, and ensuring reliable software deployment. Manage infrastructure, monitor performance, and collaborate across teams to maintain scalable, secure, and resilient systems. Key role and responsibilities Build, deploy, and monitor solutions using AWS services (Lambda, API Gateway, CloudWatch, ECS, ECR … generate custom analytics reports for API consumption and errors Implementation of API security and access control (OAuth, API keys, JWT, etc.) Familiarity with API design patterns, best practices, and performance optimization Excellent collaboration and communication skills Randstad Technologies Ltd is a leading specialist recruitment business for the IT & Engineering industries. Please note that due to a high level of More ❯

availability systems. Raise engineering quality: Champion best practices for testing, observability, and security. Review critical PRs and guide technical decisions across the team. Operate and improve production systems: Monitor performance, reliability, and cost efficiency. Lead incident response and drive continuous improvement. Mentor and grow others: Support engineers through pairing, feedback, and documentation to strengthen technical capability across the team. … experience designing and delivering production systems using Python on AWS . Strong understanding of distributed systems, API design, and event-driven architectures. Deep knowledge of system observability, logging, and performance optimisation. Familiarity with modern security and data-privacy best practices. Excellent communicator who can document and articulate technical trade-offs clearly. Behaviours & Attributes Ownership: Takes full responsibility for systems More ❯

Azure Solutions: Architect and implement solutions leveraging Azure services (e.g., Azure App Services, Azure Functions, Azure SQL Database, Azure Blob Storage, Azure Service Bus, etc.) to support business requirements. Performance Optimization: Monitor and optimize the performance of applications deployed on Azure, identifying bottlenecks and improving scalability, availability, and reliability. Cloud Infrastructure: Assist in setting up and managing Azure More ❯

using Apigee Edge and X-API strategy. Perform API strategy execution, provide technical support, and generate insights through analytical reports. Manage infrastructure automation, monitoring, and optimization to ensure high performance and reliability. Collaborate with cross-functional teams to improve system efficiency, scalability, and deployment automation. Troubleshoot and resolve system and integration issues promptly. Maintain clear documentation for builds, deployments … custom analytical reports for API consumption and error tracking. Familiarity with API security and access control mechanisms (OAuth, API keys, JWT, etc.). Proficient in API design best practices, performance optimization, and monitoring techniques. More ❯

integrate seamlessly with VMware virtualized environments. Leverage VMware tools (e.g., vSphere, vCenter, NSX) to optimize OpenShift deployments. Configure and manage Pure Storage solutions (e.g., FlashArray, FlashBlade) to provide high-performance, scalable storage for OpenShift workloads. Ensure compatibility and performance optimization between OpenShift, VMware, and Pure Storage. CI/CD Pipelines and DevOps Workflows: Design and implement CI/ More ❯

build the backbone of our trading operations. RESPONSABILITIES Design & Maintain Infrastructure: Architect, deploy, and manage a highly resilient AWS-based infrastructure to support high-frequency trading (HFT) strategies. Enhance Performance: Collaborate with developers and traders to identify and resolve performance bottlenecks, ensuring optimal low-latency trading in a fast-paced environment. Drive Automation: Create automation scripts and tools … s production trading infrastructure, including automating real-time and batch jobs. Resolve Technical Issues: Troubleshoot and resolve technical problems such as server downtime and network connectivity issues. Monitor & Improve Performance: Proactively monitor system performance, identify and address potential bottlenecks, and ensure seamless trading operations. SKILLS Proven Expertise: At least 5 years of experience in a senior DevOps role … within high-frequency trading (HFT) environments in the cryptocurrency sector. Experience working at AWS or Binance is a plus. Performance Optimization: Proficient in optimizing system performance across hardware, software, system, and network levels to reduce latency and enhance throughput. Cloud Mastery: Extensive expertise with AWS is essential, with insider knowledge preferred. Familiarity with additional cloud platforms is a More ❯

Platform Engineer – Web3 Infrastructure & DevOps Location: London or New York (On-site Only) Compensation: $250K–$350K + Tokens + Equity Mission A high-performance Web3 engineering team is seeking a top-tier Platform Engineer to join its core backend group. The mission: design, scale, and secure an ultra-reliable backend capable of processing millions of on-chain events with … autoscaling, HPA, service mesh, high availability. Manage observability using Prometheus, Grafana, Loki, and OpenTelemetry. Ensure near-zero downtime via automated monitoring and incident response workflows. Optimize infrastructure for security, performance, and cost efficiency. Platform Engineering/DevOps (50%) Design and maintain CI/CD pipelines using GitHub Actions, ArgoCD, or Tekton. Automate deployments, testing workflows, migrations, and rollout processes. … time blockchain systems Profile Proven experience building and scaling high-load, low-latency, distributed systems. Ability to operate with high ownership in fast-paced engineering environments. Strong debugging and performance optimization skills. Passion for automation, reliability, and precision engineering. Comfortable working in elite, high-performance technical teams. What We Offer Total compensation between $250K and $350K, plus tokens More ❯

used by enterprise customers, using React , TypeScript , and Next.js . You’ll work across the full front‐end life cycle — from architecture and design collaboration, through to deployment and optimisation — delivering robust, performant, and accessible user interfaces. You’ll join a highly collaborative team where your voice will matter, and your work will be visible at scale. What You … ll Do Build and maintain modern web applications using React , TypeScript , and Next.js . Translate UI/UX designs into responsive, accessible and high‐performance user interfaces. Collaborate strategically with backend engineers, product owners and designers to deliver end‐to‐end solutions. Write clean, tested, maintainable code and set best‐practice standards for the front‐end. Optimize web performance … a bonus). Experience with testing frameworks (e.g., Jest , React Testing Library ). Comfortable with CI/CD pipelines, version control ( Git ), modern build tools and an eye for performance optimisation. Strong understanding of scalable front‐end architecture, responsive design, accessibility standards and code maintainability. Nice to Have Experience with server‐side rendering or static site generation (Next.js). More ❯

generate insights through analytical reports, enhancing integrations and documentation. Regularly audit and upgrade software packages, libraries, and dependencies used in GitHub repositories. Maintain and optimize infrastructure components to ensure performance, reliability, and security. Design and manage Terraform and Ansible scripts for infrastructure automation and configuration management. Develop and maintain Azure DevOps CI/CD pipelines for efficient software delivery. … and Fargate, ensuring scalable and secure microservice environments. Use Docker for containerizing applications and improving deployment consistency. Manage and secure Apigee or similar API Management platforms, ensuring API governance, performance optimization, and compliance. Ensure security and compliance best practices across the platform, including secure coding, dependency management, and vulnerability scanning. Implement and enforce API security and access controls using …/ECR/Fargate. Strong understanding of CI/CD tools such as Azure DevOps, GitHub Actions, and Jenkins. Proficiency with Docker for containerization. Experience in monitoring tools and performance tuning for large-scale distributed systems. Solid knowledge of Apigee or similar API Management platforms. Ability to design and implement API strategies, policies, and analytics. Experience developing and integrating More ❯

Position Type: Contract About the Role: We’re seeking a dynamic and skilled Full Stack Developer who thrives in fast-paced environments and is passionate about building scalable, high-performance web applications. You’ll be working across the stack—from crafting intuitive front-end interfaces to architecting robust back-end services—using Node.js, Angular, and Next.js. If you love … Git, CI/CD pipelines, and cloud platforms (GCP) Nice to Have: - Experience with Docker and container orchestration (e.g., Kubernetes) - Familiarity with testing frameworks (Jest, Mocha, Cypress) - Knowledge of performance optimization and security best practices - Contributions to open-source projects or a strong GitHub portfolio Regards Anita More ❯