11 of 11 Permanent Performance Optimisation Jobs in Cardiff

established trading-related application and drive its ongoing development. You will manage and enhance the existing codebase, deliver new features, ensure reliability and performance, and help evolve the system as the business grows. This is an excellent opportunity for someone who enjoys autonomy, technical responsibility, and working … latency, high-performance applications. What You'll Do Maintain, extend, and optimise an existing Python-based trading application Add new features and improve current capabilities with a focus on performance, reliability and clean architecture Build and optimise real-time pipelines handling high-frequency data Improve latency, throughput ...

they need exceptional .NET Software Engineers to drive this evolution. Your Impact: Design and develop mission-critical platform services, APIs, and merchant portals Drive performance optimisation and system reliability through intelligent engineering Champion engineering excellence in architecture, code quality, and delivery Partner with cross-functional teams to deliver ...

scalability. Collaborate with product managers, designers, and engineering leadership to define and drive technical strategy and roadmap. Lead cross-functional technical initiatives, including performance optimisations, system refactoring, and migrations. Establish and enforce engineering best practices across the organisation (code quality, security, testing, CI/CD). Mentor and coach ...

role is designed for students who want exposure to real production systems rather than simulated coursework. You will contribute to the deployment, stability, and performance of a FastAPI-based backend used by live clients, working in a professional, fully remote engineering environment. The internship focuses on learning through contribution … Contribute to monitoring, logging, and alerting for production and staging environments Support infrastructure security through proper handling of secrets and environment variables Assist with performance optimisation, reliability improvements, and cost awareness Participate in regular check-ins and receive guidance and feedback from senior engineers Who This ...

Translating product and design requirements into scalable, high-quality solutions Collaborating closely with product managers, designers, and other engineers Tackling complex challenges around scalability, performance, and reliability Raising the bar on code quality, tooling, and engineering best practices What we're looking for 7+ years of experience … heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational (MySQL) and NoSQL databases Strong debugging, troubleshooting, and performance optimisation skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend ...

.NET developer with a strong SQL Server background and experience working in financial environments. You will be joining a highly skilled team focused on performance, reliability, and scalability, tackling complex issues in real-time, data-driven applications. This is purely a tech-heavy role—business knowledge is helpful … required. What You'll Be Doing: Leading initiatives on DB modernisation and performance optimisation Archiving legacy data from key tables with precision to ensure smooth migrations Redesigning and refactoring high-activity tables to improve performance and maintainability Developing frameworks and tooling for real-time monitoring of trading ...

approaches including working with agentic architecture. Key Responsibilities Backend Development & Architecture - Design and implement scalable Python backend services, architect and maintain secure, high-performance, production multi-tenant systems, and develop RESTful and asynchronous APIs for internal and external use. LLM, Agents & AI Integration - Drive R&D innovation to meet … preferably AWS) and infrastructure-as-code Ø Experience with containerisation, orchestration, and CI/CD pipelines Ø Understanding of database scaling, caching strategies, and performance optimisation Ø Familiarity with LLM technologies and latest utilisation methodologies, including agentic workflows Ø Strong understanding of software design principles and coding standards ...

performant interfaces that make complex financial workflows simple for users. Youll have genuine input into how things are built, from design system evolution to performance optimisation in a team that values thoughtful, maintainable engineering over quick fixes. Experience needed Strong commercial experience with React and TypeScript A focus ...

engineers who are comfortable managing their own priorities and momentum. You'll play a key role in scaling our Shopify Hydrogen headless storefront, improving performance, shipping features quickly, and supporting the launch of our mobile app. It's an excellent opportunity for a strong engineer stepping into their first … tooling as part of day-to-day delivery Improve code quality, structure, documentation and testing Support experimentation, analytics, A/B testing and performance optimisation Diagnose and resolve issues across browsers, devices and edge cases About You Strong experience with React and modern TypeScript/JavaScript Able ...

experience) Work Week: 35 hours, full-time About The Role INDEZ is looking for a skilled Magento Developer to join our compact, high-performance team. We are a Google Premier Partner and the organisers of the national Ecommerce Scotland conference We manage a portfolio of multi-million turnover … growth marketing. This is a unique opportunity to work directly alongside our CTO - a highly specialised ecommerce architect with a PhD in High-Performance Computing. You will have the chance to work with high-level technical leadership, adopting the latest technology for growing and scaling ambitious clients. ...

Splunk Engineer - 3-Month Contract - Fully Remote We are hiring an SC Cleared Splunk Engineer to take hands-on ownership of Splunk platform engineering, optimisation, and operational support within a secure environment. This role is delivery-focused, requiring practical experience building, maintaining, and improving Splunk deployments to support security … infrastructure, and application logs. Develop and maintain Splunk dashboards, reports, and alerts to support SOC and operational teams. Tune searches and alerts to improve performance, reduce noise, and enhance detection capability. Support incident investigation and troubleshooting using Splunk search and analytics. Ensure Splunk platform performance, scalability, and reliability ...