51 to 75 of 81 Performance Optimisation Jobs in the City of London

Responsibilities Lead from the front: Architect, develop, and deliver features in our React/TypeScript-based platform. Shape engineering strategy: Drive code quality, performance, and maintainability across the stack. Mentor and guide: Support engineers at all levels through coaching, code reviews, and technical direction. Collaborate cross-functionally: Work closely … Bring 10+ years' experience building and scaling full-stack or frontend-heavy web apps. Are fluent in React, TypeScript, HTML/CSS, and frontend performance optimization. Understand backend architecture well enough to collaborate effectively (Node.js, Azure SQL, ASP.NET Core, REST/GraphQL). Know how to design multi-tenant ...

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 … 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 ...

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 … 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 ...

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 … 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 ...

Lakehouse architecture, big data engineering, cloud ecosystems, and enterprise data strategy. The ideal candidate will partner with business and technology leaders to deliver high-performance data systems that support analytics, AI/ML, and real-time insights. Key Responsibilities Architecture & Solution Design Architect end-to-end Databricks Lakehouse solutions … including data ingestion, ETL/ELT pipelines, Delta Lake, data warehousing, and data governance frameworks. Define and enforce best practices, security standards, and performance optimization across Databricks workloads. Design scalable big data architectures leveraging Spark, Delta Live Tables, Unity Catalog , and MLflow. Lead cloud architecture design on Azure/ ...

thinking organization that specializes in digital innovation. We require an experienced Senior Data Engineer to design, build, and maintain a robust, scalable, and high-performance system that is fundamental to the organization's operational and analytical success. Core Responsibilities The successful candidate will own the technical development and strategic … execution of the core data platform, ensuring high quality, performance, and security: System Architecture & Development: Lead the design, development, and maintenance of scalable, high-performance, real-time data pipelines and core infrastructure components within the cloud environment. Data Integration: Ensure seamless, low-latency data flow by integrating ...

application support and application development teams Job Responsibilities To lead the management and continuous improvement of the firms' business applications portfolio, ensuring system performance, integration, and alignment with the firm’s strategic and security objectives, along with overseeing the in-house development and implementation of off the shelf software … automation of business systems to support operational efficiency. Support the firm’s migration of systems to Microsoft Azure, ensuring application compatibility, security, and performance optimisation. Skills Required Previous experience managing the application and development function within a law firm. Knowledge of SQL, C#, Python, Java, HTML/ ...

Responsibilities To lead the management and continuous improvement of the firms' business applications portfolio, ensuring system performance, integration, and alignment with the firm's strategic and security objectives, along with overseeing the in-house development and implementation of off the shelf software that increases efficiencies across the firm. Lead … automation of business systems to support operational efficiency. Support the firm's migration of systems to Microsoft Azure, ensuring application compatibility, security, and performance optimisation. Ensure compliance with security, data protection, and industry standards. Skills Required Previous experience managing the application and development function within a law firm. Experience ...

existing customer landscape Provide technical leadership and mentor teams on best practices for Azure architecture and data solutions Ensure high availability, disaster recovery, and performance optimization for mission-critical workloads. Your Profile Essential skills/knowledge/experience: The resource should have a strong understanding of data warehousing (knowledge … data ingestion, performance optimization and various tools is necessary) Should have strong technical knowledge of Azure stack as the role will involve working with very senior stakeholders both from client and external vendors Knowledge of Azure PaaS Services: Logic Apps, Azure Functions, App Services, Azure Data Factory (ADF), Azure ...

preparation 3. SOA/Microservices 4. JBoss Fuse 5. REST, SOAP 6. AWS, Open Shift 7. Active MQ, Message Broker 8. Extensive experience in performance optimization. 9. Designing Scalable, High Available and fault tolerant infrastructure on AWS or Azure Cloud. 10. Experience with scaling applications deployed on cloud … requirements into technical design. 4. Experience with a variety of architecture/design patterns and idioms 5. Review existing application system to ensure high performance and quality standards 6. Help to assess the security of existing applications and ensure that they meet internal and external compliance mandates. 7. Guide ...

Flight Management System (FMS) engineering team in London. This group builds mission-critical software used by airlines worldwide - powering real-time flight operations, route optimisation, and next-generation cockpit intelligence. You’ll work on high-performance, multi-threaded systems that directly impact global aviation efficiency, fuel optimisation … components Work on real-time data processing for flight planning, scheduling, and air traffic control integration Implement and optimise algorithms for fuel efficiency, route optimisation, and aircraft performance modelling Contribute to multi-threaded, high-performance architectures used in large-scale airline operations Collaborate with system architects, engineers ...

Java Engineer with strong FIX API (server-side) expertise to join on an initial 3 month contract. This a key role working on high-performance, low-latency trading infrastructure used in live market environments. What You’ll Be Doing Design, develop, and maintain server-side Java applications … with FIX Protocol (FIX 4.2/4.4/5.0) Experience working in Forex, trading, or financial markets environments Solid understanding of multithreading, concurrency, and performance optimization Experience with Linux-based systems Familiarity with low-latency messaging and real-time systems Strong problem-solving skills and attention to detail Nice ...

stack. Design and implement caching solutions using Redis to optimize application performance. Build and maintain API integrations between frontend and backend systems. Ensure high performance, reliability, and security across all system components. Collaborate with the team on technical architecture decisions and implementation strategies. Work closely with product and design … ethers.js and Web3 libraries for blockchain interaction. Experience with microservices architecture. Strong understanding of database design and optimization. Knowledge of security best practices and performance optimization. Experience with automated testing and CI/CD pipelines. Go development experience is a plus. Experience with monitoring and observability tools such ...

Power, Gas, and Equity products. You will take ownership of implementing complex pricing models, designing calibration routines, integrating market data, and ensuring robust model performance in live trading environments. This position is well suited for someone who blends strong quantitative expertise with production-grade engineering skills and enjoys solving … highly desirable. This role offers the opportunity to influence mission-critical pricing infrastructure used globally, while contributing to innovation in modelling, calibration, and performance optimisation. If you're interested in exploring this opportunity, please get in touch or apply directly via the job advert. ...

Java Engineer, contributing to the backbone of ultra-low latency systems powering high-volume electronic trading. This role focuses on building high-performance, globally distributed Java services that enable real-time transaction processing, configuration management, and support for quantitative research and trading teams. Key Responsibilities: Develop scalable backend systems … support high-frequency FX trading Collaborate with quants and traders to deliver platform enhancements Drive performance tuning and solve low-level technical bottlenecks Maintain high standards in testing, documentation, and code quality Tech Stack & Skills: Strong proficiency in core Java Exposure to JavaScript/TypeScript & HTML5 is a plus ...

Work closely with clients to understand data requirements and translate them into robust technical solutions. Implement best practices for data modelling, data quality, and performance tuning across cloud-based platforms. Collaborate with cross-functional teams including data scientists, analysts, and software engineers to deliver end-to-end data solutions. … projects. Required Skills Strong experience with Azure data services (Data Factory, Synapse, Blob Storage, etc.). Proficiency in SQL for data manipulation, transformation, and performance optimisation. Hands-on experience with Databricks (Spark, Delta Lake, notebooks). Solid understanding of data architecture principles and cloud-native design. Experience working ...

team Architect and maintain the 3D asset-processing and rendering modules that support our material-estimation technology across product and research functions Deliver high-performance systems from raw image processing through to OpenGL-based rendering, optimized for high-resolution assets and production workflows Key Responsibilities Contribute to establishing … industry standard for material capture in high-end photogrammetry workflows Own end-to-end 3D and rendering modules across the product Develop robust, high-performance C++ and Python modules for 3D geometry processing Collaborate with data, ML, and product teams to deliver and integrate 3D format support, 3D transformations ...

strategic customizations. Technical Advisory & Governance: Act as a subject matter expert and technical advisor to clients and internal teams, providing guidance on platform capabilities, performance optimization, security, and scalability. Establish technical governance to ensure solution integrity. Requirement Analysis & Solution Design: Collaborate with business stakeholders to gather and analyze complex … REST, SOAP, JDBC, MID Server). Technical Oversight & Quality Assurance: Provide technical oversight to development teams, ensuring adherence to architectural patterns, coding standards, and performance best practices. Participate in code reviews and ensure solution quality. Prototyping & Demonstrations: Lead the creation of technical prototypes and conduct demonstrations of proposed ServiceNow ...

C++ Software Developer, Risk Technology £160,000 to £170,000 Join a high-performance engineering group responsible for the systems that sit at the heart of a global trading operation. This team owns the core risk platform, handling everything from trade intake and real time position tracking … speed. You will work in an engineering culture that values clarity, simplicity and strong design. Expect to collaborate with colleagues across regions, refine performance at a system level and contribute to a platform that is constantly evolving as trading strategies and data volumes grow. What you bring Strong C++ ...

strategic customizations. Technical Advisory & Governance: Act as a subject matter expert and technical advisor to clients and internal teams, providing guidance on platform capabilities, performance optimization, security, and scalability. Establish technical governance to ensure solution integrity. Requirement Analysis & Solution Design: Collaborate with business stakeholders to gather and analyze complex … REST, SOAP, JDBC, MID Server). Technical Oversight & Quality Assurance: Provide technical oversight to development teams, ensuring adherence to architectural patterns, coding standards, and performance best practices. Participate in code reviews and ensure solution quality. Prototyping & Demonstrations: Lead the creation of technical prototypes and conduct demonstrations of proposed ServiceNow ...

processing patterns (CDC, watermarking, upserts) AWS Data Services Amazon S3: data lake architectures, partitioning strategies, lifecycle policies DynamoDB: data modeling, secondary indexes, streams, and performance optimization Amazon Redshift: foundational querying, integrations, and performance considerations AWS Lambda for scalable data processing and orchestration Amazon EventBridge for event-driven … decoupled data pipelines Vector Databases & Embeddings Strong understanding of vector database concepts, indexing strategies, and performance trade-offs Design and implementation of embedding generation pipelines Optimization techniques for semantic search and retrieval accuracy Effective chunking strategies for document ingestion and processing Experience with CockroachDB deployment and management is beneficial ...

C++ Software Developer, Risk Technology £160,000 to £170,000 Join a high-performance engineering group responsible for the systems that sit at the heart of a global trading operation. This team owns the core risk platform, handling everything from trade intake and real time position tracking … speed. You will work in an engineering culture that values clarity, simplicity and strong design. Expect to collaborate with colleagues across regions, refine performance at a system level and contribute to a platform that is constantly evolving as trading strategies and data volumes grow. What you bring Strong C++ ...

business teams. Key Responsibilities Act as the SharePoint SME, providing expert guidance across on-premise and Azure cloud environments. Lead platform upgrades, deployments, and performance optimization initiatives. Collaborate with IT teams, vendors, and business stakeholders to deliver solutions. Integrate SharePoint with SSO, MFA, and Azure services. Troubleshoot and resolve … improvements to enhance platform resilience and performance. Key Requirements Proven experience as a SharePoint SME with on-premise and cloud (Azure) environments. Strong troubleshooting, performance tuning, and problem-solving skills. Experience with SSO, MFA, and Azure integrations desirable. Excellent stakeholder management and communication skills. Proactive, analytical, and able ...

search of a solution-oriented Rust Software Engineer (Backend) with deep, demonstrable expertise and experience in Rust, to work on secure, scalable, and high-performance backend systems. You will be responsible for the continued enhancement and development of a multi-component platform, where your expert skills in designing, architecting … building quality systems will intersect with your hands-on coding, performance testing, and integration experience. Responsibilities: Build and deliver secure, high-quality features and improvements using Rust . Experience in TypeScript and Dart will set you above other applicants for this role Create standards-compliant world-class software systems ...

there team intentionally small, bringing together only the most exceptional talent in crypto. They are looking for a backend engineer experienced in building high-performance, low-latency microservices in TypeScript. Responsibilities Backend Development: Build and maintain scalable TypeScript services for trading, analytics, and integrations. Cross-Team Collaboration: Work with … designers, product, and users to align backend solutions with platform needs. Performance Optimization: Deliver fast, reliable systems and efficient queries for high user loads. Code Quality: Write clean, well-structured, well-documented code. Problem Solving: Debug and resolve complex issues to keep the platform running smoothly. Requirements 5+ years ...