1 to 25 of 28 Performance Optimisation Jobs in the City of London

agile team of 5-7 mobile engineers (React Native) across a mix of seniority levels. Own people management responsibilities including hiring, onboarding, line management, performance management, coaching, mentoring, and career development. Foster a collaborative, inclusive, and high-performance team culture focused on continuous improvement and psychological safety. Technical … mobile SDLC. Proven experience of REST/GraphQL API integration with mobile applications Solid understanding of mobile application fundamentals: iOS/Android app lifecycle, performance constraints and release management Proven hands-on software engineering background across modern mobile technologies e.g. cross platform/native development. Strong understanding of modern ...

Technical Leadership Lead the design and implementation of key features and components of our React Native mobile application. Make informed technical decisions that improve performance, reliability, and scalability. Participate in architectural discussions and help shape the technical direction of mobile applications. Provide support and unblock engineers during development, testing … standards are upheld. Help foster a healthy engineering culture based on learning, knowledge sharing, and accountability. Engineering Quality Champion strong testing, code quality, and performance practices. Knowledge of best practices in security, performance and accessibility Identify areas for improvement within the codebase and contribute to long-term maintenance ...

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 ...

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 ...

Knowledge of Power Platform governance and Center of Excellence practices Experience with PCF controls and modern web technologies (TypeScript, React) Understanding of Power Platform performance optimisation and profiling Experience with Azure integration services such as Service Bus, Event Grid, or API Management Personal Attributes Strong communicator with ...

experience in logging systems (e.g. ELK stack ) Proven experience in monitoring systems (e.g. Prometheus ) Proven experience in tracing systems (e.g. OpenTelemetry , Jaeger) Experience in performance optimization and resource management Relevant certifications (AWS, Google) Understanding of Agile methodologies Ability to diagnose and resolve service- affecting issues in a Broadcast/ ...

used by Sales and Trading Partner closely with FX Traders, Sales, and Quant/Tech teams to define requirements and deliver solutions Deliver high-performance, responsive UIs suitable for latency-sensitive trading environments Collaborate with global development teams across London and Asia Contribute proactively to product evolution and platform … within financial markets FX trading systems experience highly advantageous Experience with testing frameworks (Jest, Cypress, etc.) and CI/CD pipelines Strong focus on performance optimisation and UI responsiveness Confident working directly with front-office stakeholders Bachelor's degree in Computer Science, Engineering, or related discipline Desirable Backend ...

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 ...

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). ...

deployment and maintenance, ensuring high-quality outcomes across all phases. Implement best practices in coding, testing, and maintenance to enhance system scalability and performance, particularly for high-traffic events. Ensure compliance with international financial laws and security standards, integrating appropriate solutions for global payments. Set a high … software engineering excellence, emphasising efficiency, performance optimisation, and high availability. Being a mentor to tech leads and managers across the Engineering organisation. The Experience and Key Skills you will have: Experience in leading and managing large teams or projects in an eCommerce environment with Gross Merchandise Value above ...

Strong proficiency across Python/TypeScript/Golang (or equivalent polyglot stacks) with proven ownership of production-grade systems. Expertise in real-time systems, performance optimisation, fault tolerance and scalable architectures under uncertainty. Experience with financial protocols, market data feeds, order matching or compute infrastructure is a strong ...

Developer before moving into Product Ownership 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 ...

driven architecture , with Kafka at the core Collaborate with product, frontend and platform teams to deliver scalable e-commerce solutions Contribute to system design, performance optimisation and best engineering practices Take ownership of services from development through to production What We’re Looking For Strong commercial experience with ...

teams through complex product development challenges. Collaborate with stakeholders to gather and prioritize requirements based on business impact and feasibility. Oversee continuous testing and performance optimization to maintain high product standards. Monitor emerging technology trends and integrate innovative approaches into product development. Influence strategic decisions, manage risks, and ensure ...

accuracy, security, and compliance with organisational policies and privacy standards. Document data models, definitions, and analytics logic to support transparency and reuse. Continuously improve performance, reliability, and scalability of analytics solutions. Skills & Experience Strong experience designing and delivering analytics solutions end-to-end, including both strategy and implementation. Hands … expertise with Power BI (data modelling, DAX, visual design, performance optimisation). Experience working with Microsoft 365 data, ideally including Microsoft Graph and Viva Insights. Ability to define KPIs and analytics frameworks in ambiguous or evolving environments. Proven ability to engage stakeholders, influence decisions, and drive alignment. Strong ...

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 … 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 ...

Experience Cloud. You will be highly skilled in Apex, Visualforce, Lightning Components, and Lightning Web Components. A strong understanding of Salesforce governor limits and performance optimisation principles for efficient and scalable applications for a large active user base. Expertise in large-scale integration using SOAP, REST, Streaming (including ...

working with the Sales team to ensure client satisfaction; Responsible for campaign sales push and delivery: RFP coordination, client management, briefing stakeholders, ad operations & performance optimisation & reporting in relationship with the traffic and trading team; Creation and delivery of weekly campaign reports; Monitoring campaign delivery with traders; Project ...

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 ...

Power BI, Azure, and Confluent technologies. You will lead platform strategy, administration, and integration to support scalable analytics and data engineering solutions. Responsibilities include performance optimization, governance, automation, and enabling secure, reliable data flows. This role requires strong leadership, cross-functional collaboration, and hands-on technical proficiency. Your role … prem environments. You will lead platform strategy and operations for technologies including Snowflake, SQL Server, Power BI, Azure, and Confluent, ensuring high availability, performance, and scalability. You will collaborate with cross-functional teams to design and implement platform solutions that support data engineering, analytics, and business intelligence initiatives. Your ...

certifications, including AWS, Azure, and GCP, along with extensive in-house courses and a mentoring program. Key Responsibilities Design and implement scalable, high-performance architectures for diverse client projects, ensuring alignment with business objectives and technical requirements. Collaborate with clients to gather and analyse requirements, translating them into robust … accessible. Provide technical leadership and mentorship to development teams, guiding them through best practices in software engineering and architecture. Conduct regular code reviews and performance optimisations to ensure high-quality, efficient solutions. Stay up-to-date with emerging technologies and industry trends, evaluating their potential impact on client projects ...

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 ...

complex and scalable systems and features using C# and Unity that form the technical foundation for our games. Contribute to the development, profiling and optimisation of our code, including using Unity’s UI Toolkit and dynamic data binding. Support the development of editor tooling and workflows that enhance productivity … streamline content integration across multiple disciplines including engineers, art & design. Own and maintain areas of our C# codebase, ensuring performance, maintainability, and cross-platform compatibility across desktop, console, and mobile platforms. Collaborate with cross-functional teams – including design, engineering, QA, and production – to deliver high-quality user experiences ...

rigorous scientific research, and deep expertise across trading, technology, and operations. As a tech-driven organization, we develop our own advanced systems, including high-performance trading platforms and large-scale data analysis infrastructure. With a global presence, we emphasize collaboration across investment, technology, and operations teams, ensuring seamless integration … across our offices worldwide. Within this Reliability team, youll play a vital role in maintaining the performance, stability, and availability of our software systems. You'll be working closely with mission-critical applications, developing reliability features, improving observability, and building automation tools to streamline operations. About the Role - 5+ ...

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++ ...