751 to 775 of 886 Performance Optimisation Jobs in the UK

Software Engineer - Frontend (React / React Native) New Edinburgh, Scotland, United Kingdom

Location
City of Edinburgh, Scotland, United Kingdom
Native/React ) to join our Sportsbook engineering team. You'll be working on foundational engineering, focusing on improving the underlying frameworks, tooling, and performance that enable FanDuel to deliver an exciting and innovative customer experience. Working with our React Native Sportsbook application, you'll contribute to app performance … collaborative, curious, and committed to developing their skills. The ideal candidate has practical experience with React Native and an interest in mobile performance, tooling, and best practices. Exposure to native Android or iOS development is a plus. As a member of this team, you will contribute to the foundations ...

Senior Python Quant Developer - London - Systematic Trading - No Visa Sponsorship Advertised

Location
Greater London, England, United Kingdom
building critical components for both live trading systems and advanced simulation environments. This presents a unique opportunity to directly impact the firm's trading performance and technological innovation within a highly quantitative setting. Requirements Master's or PhD in Computer Science or a related quantitative discipline. A minimum … years of experience in designing and developing software for quantitative trading or similar high-performance environments. Proficiency in Python, with experience in numerical libraries and performance optimization. Strong understanding of systematic trading strategies and financial markets. Experience with large-scale data processing and analysis. Excellent problem-solving skills ...

Investment & Analytics Director

Location
Manchester, England, United Kingdom
lead our UK Investment & Analytics function. This is a pivotal leadership role with responsibility for portfolio acquisition strategy, valuation, analytics, underwriting, portfolio performance, and investment governance across the UK business. As part of the Executive Team, you will shape investment strategy, influence capital allocation decisions, and provide the commercial … strategic thinking and strong leadership capability. What you’ll do Lead the UK Investment & Analytics function, overseeing portfolio valuation, pricing, acquisition strategy, underwriting, and performance optimisation. Drive investment performance and profitability through data-led decision making, predictive analytics, and commercial insight. Identify and evaluate new portfolio acquisition opportunities ...

Senior Software Engineer, Roku UI

Hiring Organisation
Roku
Location
Cambridge, Cambridgeshire, UK
Employment Type
Full-time
world while gaining meaningful experience across a variety of disciplines. About the teamAt Roku, the UI team builds the foundational frameworks, tooling, and high‐performance UI components that power experiences across millions of devices. We own the middleware and UI layers that enable smooth navigation, responsive interactions, rich animations … consistent developer workflows across the platform. Our work spans graphics rendering, layout and animation systems, performance optimization, and developer APIs that make it easy to create reliable, visually compelling applications at scale. We operate in a collaborative, high‐trust environment and partner closely with firmware, platform, and product teams ...

Staff Controls Software Engineer

Location
Greater London, England, United Kingdom
reliably in real-time environments. What You’ll Do Design and maintain modular, real-time control architectures supporting locomotion, manipulation, and teleoperation. Implement high-performance control loops and middleware interfaces for deterministic, safe operation. Industrialize algorithms, ensuring production readiness, maintainability, and performance. Establish clear software boundaries and interfaces between … software on embedded or Linux-based systems, ensuring consistent behavior across hardware targets. Develop automated testing frameworks (simulation, hardware-in-the-loop, regression, and performance testing). Drive release and version management of the control stack, ensuring stability across branches and deployments. Conduct profiling, benchmarking, and performance validation ...

Senior Backend Engineer (Product Platforms)

Location
Uddingston, Scotland, United Kingdom
more reliable, scalable and maintainable? Do you thrive on solving production challenges, improving operational resilience and building software that directly impacts customers and business performance? Are you comfortable taking responsibility for systems you did not originally build, understanding how they work, identifying opportunities for improvement and confidently leading technical … engineering team and reporting directly to the Head of Development. You will be trusted to take ownership of key backend platforms, improve reliability and performance, contribute to architectural discussions and deliver robust software that can support DFYNE’s continued growth. You’ll work closely with Product, Engineering and Operations ...

Credit Pricing Manager

Location
Greater London, England, United Kingdom
accounts, instalments and card products. This is a delivery-focused role requiring strong practical experience in credit pricing, SQL, Python, analytical modelling, forecasting and performance tracking. The role will use advanced analytics to optimise revenue, margin and customer value while maintaining effective risk controls, fair customer outcomes and regulatory … assessments to ensure competitive pricing, fair customer outcomes and regulatory compliance. Develop clear risk management frameworks for pricing strategies and testing, including defined controls, performance measures and actionable tracking. Deliver actionable insights and recommendations to optimise revenue, margin, customer value and overall portfolio performance. Design and implement automated reporting ...

Tech Lead (Unity)

Location
United Kingdom
implement new technologies, workflows, and development tools. Identify technical risks early and work with production to develop mitigation strategies. Ensure projects maintain strong performance, stability, and scalability throughout development. Mentor and support junior and mid-level developers. Conduct code reviews and provide constructive technical feedback. Help improve team skills … guidance. Foster a collaborative development culture focused on quality and continuous improvement. Work closely with other disciplines to remove technical blockers and improve workflows. Performance & Optimization Champion performance optimization across gameplay systems, rendering, memory usage, and loading times. Profile and troubleshoot performance issues on target platforms. Ensure ...

Founding Engineer

Location
Greater London, England, United Kingdom
/AI services in Python. Make critical decisions around distributed systems design, database selection, caching strategies, and API platform architecture. Profile and optimize performance for high-traffic, latency-sensitive systems (sub-20ms SLAs). Work hands-on with Kubernetes to deploy, manage, and scale services reliably. Redefine and evolve … caching layers — and the judgment to choose the right tool for the job. Experience building or designing high-quality API platforms. Experience with performance profiling and optimization for high-traffic systems. Prior experience at an early-stage startup or on greenfield/founding engineering projects. Strong understanding of concurrency ...

NTN Stack SW Architect (UK)

Location
Greater London, England, United Kingdom
embedded telecommunications systems driving the Meridian 5G Non-Terrestrial Network (NTN). This role requires a seasoned software engineering leader capable of architecting high-performance, scalable, and highly secure embedded solutions that integrate seamlessly with our complex satellite and ground segment infrastructure. In this critical leadership role, you will … maintaining software specifically for wireless communications and telecom infrastructure, including 5G NR and NTN technologies. Implementing software solutions that strictly adhere to our performance, scalability, security, and maintainability objectives. Leading software design reviews, providing technical mentorship to junior engineers, and driving project execution with an unwavering focus on engineering ...

Senior Web Developer - Tools

Hiring Organisation
Rockstar Games
Location
Dundee, UK
Employment Type
Full-time
software tools that are used by all game development disciplines to support the creation of all Rockstar Games projects. RESPONSIBILITIESDesign and develop complex, high performance web applications that are the backbone of project management and collaboration across our projects. Development of accessible front-end components and applications using React. … front-end applications with ASP.NET Core (C#).Contribute to architectural decisions and continuous improvement of the code base. Develop comprehensive test suites. Web performance optimization. REQUIREMENTSA degree in computer science or 5+ years of experience in professional web development.5+ years of experience using React.5+ years of experience using .NET.Experience ...

ThingWorx Developer

Location
United Kingdom
integrations using REST APIs, SQL databases, and external enterprise systems. Provide L1/L2/L3 support, incident management, root cause analysis (RCA), and performance optimization. Manage application deployments, releases, upgrades, and environment support across Dev, QA, and Production. Configure and troubleshoot user access, security, monitoring, and application health. … Mashup Development, Services, JavaScript, REST APIs, JSON, and SQL. Experience in application support, maintenance, and production troubleshooting. Knowledge of ThingWorx security, deployments, and performance tuning. Knowledge of ThingWorx Navigate, Kepware, and Windchill integration. Location & Security Requirements: Candidate must be a UK National due to the nature of the customer ...

Thingworx Developer

Location
Bolton, England, United Kingdom
integrations using REST APIs, SQL databases, and external enterprise systems. Provide L1/L2/L3 support, incident management, root cause analysis (RCA), and performance optimization. Manage application deployments, releases, upgrades, and environment support across Dev, QA, and Production. Configure and troubleshoot user access, security, monitoring, and application health. … Mashup Development, Services, JavaScript, REST APIs, JSON, and SQL. Experience in application support, maintenance, and production troubleshooting. Knowledge of ThingWorx security, deployments, and performance tuning. Knowledge of ThingWorx Navigate, Kepware, and Windchill integration. Location & Security Requirements: Candidate must be a UK National due to the nature of the customer ...

Thingworx Developer

Location
Stevenage, England, United Kingdom
integrations using REST APIs, SQL databases, and external enterprise systems. Provide L1/L2/L3 support, incident management, root cause analysis (RCA), and performance optimization. Manage application deployments, releases, upgrades, and environment support across Dev, QA, and Production. Configure and troubleshoot user access, security, monitoring, and application health. … Mashup Development, Services, JavaScript, REST APIs, JSON, and SQL. Experience in application support, maintenance, and production troubleshooting. Knowledge of ThingWorx security, deployments, and performance tuning. Knowledge of ThingWorx Navigate, Kepware, and Windchill integration. Location & Security Requirements: Candidate must be a UK National due to the nature of the customer ...

Thingworx Developer

Location
West of England, England, United Kingdom
integrations using REST APIs, SQL databases, and external enterprise systems. Provide L1/L2/L3 support, incident management, root cause analysis (RCA), and performance optimization. Manage application deployments, releases, upgrades, and environment support across Dev, QA, and Production. Configure and troubleshoot user access, security, monitoring, and application health. … Mashup Development, Services, JavaScript, REST APIs, JSON, and SQL. Experience in application support, maintenance, and production troubleshooting. Knowledge of ThingWorx security, deployments, and performance tuning. Knowledge of ThingWorx Navigate, Kepware, and Windchill integration. Location & Security Requirements: Candidate must be a UK National due to the nature of the customer ...

Frontend Architect - React AI

Hiring Organisation
HCLTech
Location
City of London, Greater London, UK
TypeScript and AI) Role Overview- We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance applications. The ideal candidate will have hands-on experience across the full UI development lifecycle, including design, development, testing, and deployment. Technical Skills & Expertise … Have): Exposure to frameworks like Playwright or Cypress Desired Experience Experience working on financial services or trading platforms is an advantage Strong understanding of performance optimization and low-latency UI applications Experience with highly available, mission-critical systems. ...

Lead Site Reliability Engineer

Location
Greater London, England, United Kingdom
multi‐year convergence and modernization journey. You will play a pivotal role in shaping our next‐generation SRE patterns, reliability frameworks, observability strategy, and performance engineering capabilities across globally distributed systems. This role is ideal for an SRE specialist who thrives in fast‐paced front‐office environments, enjoys direct … software engineering team, participating in daily standups and design discussions. Contribute directly to the codebase (Java, Kotlin, Python) to implement reliability improvements, performance optimisations, bug fixes, and automation. Lead the design and rollout of modern SRE patterns across trading systems, including automated remediation, self‐healing workflows, and resilience engineering. ...

Frontend Architect - React AI

Location
Slough, England, United Kingdom
TypeScript and AI) Role Overview- We are seeking a highly skilled UI Developer with strong expertise in building time-critical, high-availability, and high-performance applications. The ideal candidate will have hands-on experience across the full UI development lifecycle, including design, development, testing, and deployment. Technical Skills & Expertise … Have): Exposure to frameworks like Playwright or Cypress Desired Experience Experience working on financial services or trading platforms is an advantage Strong understanding of performance optimization and low-latency UI applications Experience with highly available, mission-critical systems. #J-18808-Ljbffr ...

frontend developer for business planning

Location
Greater London, England, United Kingdom
maintain the internal design system, including custom caching mechanisms and advanced state management solutions Balance new feature delivery with ongoing maintenance and performance optimization Identify and resolve issues proactively while ensuring continuous delivery and improving technical processes Implement intelligent features that guide users and enhance their workflows Build … building scalable UIs with React and TypeScript Experience collaborating with backend engineers to shape API design and optimize data consumption Experience with design systems, performance optimization, and handling large datasets Strong communication skills and a problem-solving attitude Humility and willingness to grow Fluent English Nice to have: French ...

Marketing Tech (Senior) Principal

Location
Greater London, England, United Kingdom
will be responsible for leading the organization's efforts to lead the strategic development and optimization of marketing technology solutions to enhance channel performance, drive efficiency, and support ambitious business growth. WHAT YOU'LL DO Architect and oversee the integration of marketing technologies, ensuring seamless data flow across paid … audience & value signals, attribution, and campaign performance. Ensure compliance with data privacy regulations while maximizing the use of first-party data for personalization and performance optimization. Define best practices, governance frameworks, and training programs to enhance marketing tech & AI adoption across teams. Help Farfetch in driving towards a single ...

Marketing Tech (Senior) Principal

Hiring Organisation
Farfetch
Location
London, UK
Employment Type
Full-time
will be responsible for leading the organization's efforts to lead the strategic development and optimization of marketing technology solutions to enhance channel performance, drive efficiency, and support ambitious business growth. WHAT YOU'LL DO Architect and oversee the integration of marketing technologies, ensuring seamless data flow across paid … audience & value signals, attribution, and campaign performance. Ensure compliance with data privacy regulations while maximizing the use of first-party data for personalization and performance optimization. Define best practices, governance frameworks, and training programs to enhance marketing tech & AI adoption across teams. Help Farfetch in driving towards a single ...

Senior Ruby Engineer

Location
Greater London, England, United Kingdom
What You’ll Do Design and implement scalable, high-performance backend systems to power our e-commerce experience. Build and maintain interfaces that support our frontend, mobile, and third-party integrations. Be very experienced working with pull, push models for data parity between third parties and our systems around … card charge and concepts such as state machines. Expert experience with PostgreSQL, including complex joins and reporting queries, and familiarity with data modeling and performance optimization. Familiarity with cloud infrastructure (e.g., AWS, ECS, CodeBuild) and containerization (Docker,). Strong understanding of system design, data structures, and algorithmic principles. Comfortable ...

Workday Integrations Manager

Hiring Organisation
Cognizant
Location
London, UK
Employment Type
Full-time
Workday Studio, EIB, Core Connectors, REST/SOAP) to ensure robustness and scalability. Provide hands-on guidance to teams on complex integrations, troubleshooting, and performance optimisation. Ensure integration patterns, error handling, and data flows are aligned to best practice. Act as a senior escalation point for technical delivery challenges. … coach consultants on delivery execution, technical capabilities, and client engagement. Support development through shadowing, feedback, and continuous learning. Drive a delivery-focused, high-performance culture within the team. Quality & Delivery ExcellenceEnsure consistency and quality across deliverables including designs, builds, and documentation. Drive adoption of delivery frameworks, accelerators, and reusable ...

Business Analyst Advisor

Location
Bourne End, England, United Kingdom
quality and governance in assigned systems. May be responsible for data governance processes and quality in assigned area of responsibility. Leads governance initiatives and performance optimization. Coaches junior level analysts in data governance, report design and analysis, and data presentation as well as in technical and organizational effectiveness. Demonstrates … Work Scheme. Employee Assistance Programme (EAP). ZIP bonus scheme. In addition to base pay, Zebra offers this role the opportunity to earn a performance-based annual cash incentive, at a target equal to 10% of base pay, in accordance with the terms of the applicable incentive plan. Minimum ...

FX Options Quantitative Developer (Assistant Vice President)

Hiring Organisation
Citigroup
Location
London, UK
Employment Type
Full-time
integration with risk tech and trading systems in Citi. Develop our analytics production software using C++ and Python, applying object-oriented design principles and performance optimization techniques including C++ and algorithmic optimization, grid distribution, calc graphs, use of internal Citi libraries and frameworks and hardware acceleration. You will primarily … enjoy a whole host of additional benefits such as: Generous holiday allowance starting at 27 days plus bank holidays; increasing with tenureA discretional annual performance related bonus Private medical insurance packages to suit your personal circumstancesEmployee Assistance Program Pension Plan Paid Parental Leave Special discounts for employees, family ...