1 to 25 of 27 Permanent Performance Optimisation Jobs in Central 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 ...

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 ...

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 ...

Experience with TypeScript and React Exposure to frontend design systems Experience with Docker and cloud platforms (AWS preferred) Knowledge of modern web architecture and performance optimisation A proactive, pragmatic mindset — someone who takes ownership and gets things done Why apply to be a Software Engineer? Join a mission ...

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 ...

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 ...

quality, engineering standards, and best practices • Mentor and support other developers (pairing, coaching, unblocking, raising capability) • Take accountability for software quality: testing strategy, maintainability, performance, and scalability • Write and maintain unit tests and Behat tests, and ensure coverage is meaningful System Management & Support: • Diagnose complex issues across application + … infrastructure layers and drive resolution • Lead performance optimisation and scalability improvements • Ensure compliance with accessibility standards, GDPR, and data protection by design • Strengthen QA processes and data integrity (including release readiness) Collaboration & Stakeholder Management: • Work closely with product and design to shape solutions (not just implement tickets) • Translate ...

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/ ...

Level Shopify Developer (Fully Remote) About Us We are a fast-growing/well established digital agency delivering high-performance eCommerce solutions for ambitious brands across DTC, retail, and lifestyle sectors. Our clients include scaling startups and established high street brands , giving our team exposure to recognised names … fast-growing eCommerce disruptors. Youll play a key role in translating design and UX requirements into responsive, high-quality Shopify themes and features balancing performance, scalability, and clean code standards. Key Responsibilities Develop, customise, and maintain Shopify and Shopify Plus storefronts Build custom themes using Liquid, HTML, CSS/ ...

quality benchmarks for AI initiatives. Own technical estimations, feasibility assessments, and delivery quality across AI workstreams. Lead technical troubleshooting, root cause analysis, and performance optimisation. Collaborate closely with architecture, product, and DevOps teams to embed AI into larger ecosystems. Continuously assess and introduce new AI tools, frameworks, and approaches ...

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 ...

machine learning models using Python 📊 Work with large, complex datasets to support AI-driven products and insights 🧠 Assist with feature engineering, model experimentation, and performance optimisation ☁️ Contribute to data and ML pipelines in cloud-based environments 🗄 Work with structured and semi-structured data using SQL 🚀 Support the deployment ...

secure, and performant while driving improvements across infrastructure, automation, and operational workflows. Key Responsibilities Maintain and improve production services with a focus on reliability, performance, and operational excellence Own and enhance Azure‐based infrastructure, ensuring clean, scalable, and well‐documented environments Lead improvements across CI/CD, IaC, monitoring … operational tooling Troubleshoot and optimise traffic routing, security, and performance across Azure networking components Contribute to continuous improvement initiatives, reducing toil and increasing automation Collaborate with engineering teams to ensure best practices are followed across deployments and service operations Essential Skills Azure DevOps – broad experience across pipelines, repos, service ...

Contribute meaningfully to product and architecture discussions; be heard in debate and align to unified decisions. Own operability: CI/CD, monitoring/alerting, performance optimisation, safe rollbacks. Build and integrate AI features (LLM/agent workflows, RAG/vector DB integration, eval hooks, cost/safety guardrails ...

side language). Experience with relational databases. Working knowledge of cloud platforms, preferably Google Cloud Platform. Strong commitment to code quality, efficient architecture, and performance optimisation. Bonus Points Advanced knowledge of JVM-based languages, particularly Kotlin. Experience with Kubernetes and Terraform. Familiarity with advanced Postgres features such as GIST ...

application platforms transformation and also long-term managed capabilities. It helps clients connect technology decisions to business outcomes such as resilience, agility, cost optimisation and operational efficiency. This role is a blend of technology leadership, executive advisory and pre-sales enablement, complementing sales, delivery and architecture teams by bringing … architectures and platform engineering DevSecOps, CI/CD and developer productivity at scale Enterprise-scale application and digital managed services, including cost, reliability and performance optimisation Key Responsibilities Executive Advisory and Client Engagement Engage confidently with senior client stakeholders across enterprise accounts. Lead executive-level discussions on cloud ...

enabled capabilities across the mobile platform. In this role, you will: Lead the design, development, and maintenance of advanced iOS applications, ensuring high performance, quality, and responsiveness across Expedia Group’s product suite. Architect and implement robust, scalable system and API designs, including effective data modelling to support complex … maintainable iOS mobile architectures, leveraging common design patterns such as MVVM or VIPER Advanced proficiency in SwiftUI - Skilled in multi-threading, concurrency, and performance optimisation Prior experience in the search domain or travel industry, such as building or scaling search, discovery in consumer mobile apps. Experience establishing technical ...

Data Engineering 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 Development Framework experience within Microsoft Stack Technologies Experience with implementing and optimising scalable cloud infrastructure is highly valued Backlog management ...

power rich user experiences. Rapidly shaping UI concepts through prototypes and iterative design. Ensuring reliability through comprehensive unit testing and a strong focus on performance optimisation. Enhancing, maintaining and supporting existing features with robust monitoring and alerting. Collaborating with cross-functional teams in a matrix environment and guiding development ...

driven product increments Solid understanding of value-based prioritization and product strategy in a data-driven context Advanced Power BI expertise, including dashboards, DAX, performance optimization, and row-level security Working knowledge of enterprise data products, semantic models, and data governance Understanding of modern data platforms and analytics ecosystems ...

evolution of AI-enabled capabilities across the mobile platform. In this role, you will: Architect, design, and deliver advanced Android mobile solutions, ensuring scalability, performance, and maintainability across Expedia Group’s travel platforms. Lead technical direction for multi-service and cross-domain initiatives, influencing architectural decisions and setting coding … real world products. Preferred Qualifications: Strong proficiency in Kotlin Advanced proficiency with Jetpack components/Jetpack Compose, Android UI/UX best practices, and performance optimisation Deep understanding of Android app architecture patterns (e.g., MVVM, MVI, MVP) Prior experience in the search domain or travel industry, such ...

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 … 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 ...

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 ...

design system Participate in code reviews and help maintain frontend standards Work cross-functionally with other teams to deliver features Debug and optimize frontend performance Mentor junior engineers and share knowledge with the team Build new features and improve existing user journeys What We're Looking For Essential: 5+ … team Highly Desirable: Experience with our specific stack (Vite, Turbo, Tailwind, Storybook) Background in SaaS platforms or complex B2B products Understanding of web performance optimization and monitoring Familiarity with backend technologies to enable better cross-stack collaboration Our Tech Stack: Framework: React, TypeScript Build Tools: Vite, Turbo Styling: Tailwind ...

partnered with a real-time sports data platform that is revolutionising how companies leverage data to empower their business. They are looking for a performance focused Senior Engineer with a passion for writing clean, efficient, and maintainable code. This is an exciting opportunity to join collaborative and innovative startup … streaming endpoints for live data delivery. Collaborate with front-end teams to power trading consoles and dashboards. Profile and tune Node.js applications for performance and memory efficiency. Ensure secure API design and compliance with data privacy regulations. Contribute to architecture discussions, code reviews, and documentation. Key requirements Strong experience ...