1 to 25 of 55 Performance Optimisation Jobs in the City of London

deliver scalable, high-performing features, while mentoring a team and helping drive innovation across the platform. Role and Responsibilities: Lead the design, development, and optimisation of high-performance, cloud-based software solutions Partner with Technical Design Authority to shape system architecture, APIs, and data models Ensure secure, scalable … integration with databases, third-party APIs, and messaging services Drive performance optimisation, reliability, and robust data integrity standards Mentor developers, promote Agile best practice, and elevate engineering standards Participate in on-call rota and act as escalation point for critical incidents Skills and Experience: 5+ years’ software development ...

chance to build something category-defining, this could be your role. About the company This business is a truth-first ad measurement and performance optimisation platform built for performance marketers who need attribution they can trust and act on. The platform connects ad platform APIs with first … They are already working with impressive early-stage logos across financial services (including global trading platforms and crypto exchanges), ecommerce, and telco. Measurement and performance optimisation is an evergreen, global problem now being reshaped by AI and the founders are building toward market leadership. About the role ...

building and enhancing consumer and business applications across web and mobile. You’ll design and develop with three core principles in mind: maintainability, performance, and security. You’ll work in a collaborative, cross-functional environment where frontend engineers have real ownership and influence across the full development lifecycle. … services efficiently Participate in planning, design, development, testing, deployment and maintenance Write clean, scalable, high-quality code aligned with best practices Contribute to performance optimisation and secure coding standards Requirements Strong experience with React and/or React Native Experience with GraphQL and RESTful APIs Solid understanding ...

looking for a C++ Trading Platform Developer to join its London-based team. This is an opportunity to work at the intersection of high-performance engineering and digital asset markets, building and scaling a global trading platform that operates across dozens of exchanges worldwide. The environment combines the technical … platform spanning multiple continents, covering: Real-time market data capture Order entry and connectivity across numerous exchanges Robust networking and monitoring systems Scaling and performance optimisation of core infrastructure The tech stack is primarily C++ and Python, running on Linux across both development and production. The focus ...

execution Set coding standards, architectural patterns, and development processes to ensure scalability and maintainability Technical Execution Build, optimize, and maintain responsive, accessible, and high-performance front-end applications Define and implement design systems and component libraries to accelerate development and maintain UI consistency Work closely with backend engineers … best practices in a fast-growing startup environment Partner with designers to turn prototypes and wireframes into seamless user experiences Champion quality through testing, performance optimisation, and strong security practices Required Skills & Experience 8+ years of professional front-end engineering experience, with 2+ years in a technical leadership ...

long-term architectural standards. You will play a key role in shaping the frontend architecture, elevating engineering standards, and delivering intuitive and high-performance experiences for our global customers. This role also carries a mentorship mandate across frontend engineering at AudienceProject. You will help define standards and best practices … across multiple teams. Key Responsibilities Frontend Architecture & Development - Design, develop, and maintain scalable frontend applications that power AudienceProject’s core products, ensuring high performance and reliability. User Experience & Product Collaboration - Work closely with Product, Design, and Data Science teams to translate business requirements into intuitive, maintainable, and technically sound ...

front-end and web engineers (React) 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 Leadership & Delivery Provide … modern web technologies, including JavaScript, HTML, CSS, and React-based frameworks . Strong understanding of modern front-end architecture, including state management, routing, navigation, performance optimisation, module federation, microservice architecture and accessibility standards. Experience designing and maintaining CI/CD pipelines , using version control effectively, and working within ...

mobile, and frontend teams. What You’ll Work On Designing and improving backend services that power web + mobile applications Building and maintaining high‐performance APIs and distributed microservices Solving problems around scalability, reliability, security, and automation Working with modern API protocols including GraphQL and gRPC Enhancing the platform … Building APIs for high‐scale consumer or B2B products Working with message queues like Kafka, RabbitMQ, NSQ, or Pulsar Integrating external APIs/services Performance optimisation & working under performance budgets Interest or experience in cryptocurrencies, Web3, or digital assets Open‐source contributions or tech blogs/talks ...

research datasets Collaborate with scientists, bioinformaticians, and data teams to translate research needs into software solutions Contribute to cloud infrastructure, system architecture, and performance optimisation Ensure high-quality code, testing, and CI/CD best practices Mentor junior engineers and support technical decision-making Required Skills & Experience Strong ...

best practice at scale Drive content strategy with a focus on high-intent, technical and product-led content Conduct keyword research, content briefs, and performance optimisation Monitor performance, report on impact, and iterate based on data What we’re looking for Proven experience as an SEO Manager ...

REST API integrations Strong knowledge of DevOps practices, CI/CD pipelines, Docker, and Kubernetes Experience designing scalable distributed systems Strong understanding of security, performance optimization, and system integration Excellent communication and stakeholder management skills Experience 4-6 years of experience in software engineering, system design, or architecture roles ...

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 ...

deployment pipelines Replace legacy/manual processes with automated, cloud-based workflows Ensure compliance with data protection, security, DLP policies, and environment management Optimise performance and troubleshoot complex issues across low-code and pro-code solutions Mentor developers, champion best practice, and support capability building Stay current with emerging … configuration, security roles, Liquid, templates) Experience with PCF, custom connectors, and API integration Advanced DAX for Power BI reporting Strong testing, debugging, troubleshooting and performance optimisation capability Experience with ALM, DevOps practices, CI/CD pipelines, version control, and code review Knowledge of ITIL, Agile/SAFe, service ...

developing data models and ETL processes; to driving value through dashboards or business applications. Integrating AI tools and LLMs to unlock valuable insights, optimise performance, and automate business processes will also be a part of this role. We’re looking for a high achiever that will be seen … transformation, and visualisation Develop and optimise data models, ETL processes, Workflows and dashboards within the platform Provide best practices for analytics pipelines, integration strategies, performance optimisation and data governance and AI readiness Leverage AI capabilities within the platform and integrate external AI tools and LLMs to enhance data ...

client is looking for an experienced ML Infrastructure Engineer to support the deployment, optimisation and scaling of advanced machine learning models in production environments. This role sits at the intersection of research and engineering, focused on ensuring models are reliably transitioned from experimentation through to large-scale deployment. … will work closely with research and platform teams to build and maintain high-performance inference systems, improve deployment processes and help drive infrastructure improvements that enable faster model iteration and release cycles. This is a strong opportunity to work on technically complex challenges within a fast-moving and highly ...

documentation, lineage, and observability Lead code reviews and mentor data & analytics engineers Drive CI/CD and infrastructure-as-code adoption Own platform reliability, performance optimisation, and cost efficiency Establish SLAs for data freshness and quality 🤝 Cross-Functional Impact Partner with Data Science, Product, and Engineering leadership Translate … reliable data platform powering AI and analytics growth Reduced ML time-to-production High levels of data quality, observability, and governance maturity Improved cost-performance efficiency across the data stack A strong, growing data engineering capability within the team This is a high-impact leadership role within a forward ...

modern data stores such as PostgreSQL or MongoDB • Experience leading distributed or hybrid engineering teams • Advanced capability in system architecture, scalability planning and performance optimisation Why You’ll Love It – The Engineering Lead will benefit from: • £110,000–£130,000 base salary plus share options • Full ownership ...

Markets is seeking a Senior Low Latency Java Developer to join our Quantitative Strategies team within Pricing & Risk, working on our high-performance, high-frequency trading platform. This is a hands-on role at the core of our market-making technology stack, where nanoseconds matter and engineering excellence … critical. Youll design and build ultra-low latency pricing and risk systems that directly power our global trading operations. If you thrive in performance-critical environments and want your work to have real market impact, wed love to hear from you. The Role Ultra-Low Latency Engineering Develop ...

including Azure Databricks, Azure Data Lake Storage, and Azure Data Factory. Advanced proficiency in SQL, Python, and Spark (PySpark), with a strong focus on performance optimization and distributed processing. Proven experience in CI/CD practices using industry-standard tools (e.g., GitHub Actions, Azure DevOps). Strong understanding ...

join their Flight Management System (FMS) engineering team. This team builds mission‐critical software used by airlines worldwide - powering real‐time flight operations, route optimisation, and next‐generation cockpit intelligence. In this role, you’ll work primarily on high‐performance C++ systems (80%), with additional exposure to Angular … frontend development (20%), contributing to one of the most advanced FMS platforms in the industry. Your work will directly impact global aviation efficiency, fuel optimisation, and operational decision‐making. Responsibilities Design and develop C++ applications for core Flight Management System components Build high‐performance, multi‐threaded backend services ...

models across Snowflake, Databricks, and cloud environments (AWS/GCP). Working closely with Data Science, Product, and Analytics teams, youll ensure reliable, high-performance data flows that power AI and analytics products. Alongside deep technical delivery, youll be responsible for leading the junior engineers and near shore partners … architectural direction and best practices. Key Responsibilities Design and maintain scalable data architectures across Snowflake and Databricks Lead schema design, dimensional modelling, and SQL performance optimisation Build robust ETL/ELT pipelines Develop resilient API ingestion workflows Implement data quality frameworks and enforce data contracts Build CI/ ...

services supporting a multi-tenant SaaS platform Work with asynchronous and event-driven processing (e.g. messaging, background services) Troubleshoot, refactor, and optimise code for performance, security and maintainability Participate in design reviews and contribute to technical architecture discussions Develop new features and maintain functionality on an existing enterprise software … RESTful services Proven experience working on SaaS platforms Strong experience using Microsoft Azure in production environments Good understanding of backend architecture, performance optimisation and security Experience working with system integrations and external APIs Nice to Have Familiarity with Microsoft Dynamics CRM or similar systems Exposure to Azure services ...

footer Y"). Distribution Management: Configure output destinations including Cloud Print, Email (with dynamic attachments), SharePoint archiving, and XML/EDI for vendor integration. Performance Optimization: Troubleshoot and optimize report generation times, particularly for high-volume manufacturing documents like picking lists and warehouse labels. Deployment & ALM: Manage the movement ...

experience with PyTorch Experience with Hugging Face transformers or similar frameworks Solid experience deploying ML solutions on AWS Understanding of MLOps, model deployment and performance optimisation Ability to work in a consultancy environment with multiple clients Desirable: Experience with LLMs, RAG pipelines or generative AI applications Knowledge ...

across the technology environment. Lead the design and implementation of scalable integration solutions connecting business-critical systems. Support reliable data exchange, system interoperability, and performance optimisation. Encourage the adoption of modern architectural practices, including loosely coupled and event-based designs. Provide technical oversight and guidance to ensure solutions ...