19 of 19 Performance Optimisation Jobs in Belfast

systems Define and enforce engineering standards, best practices, and patterns Collaborate with backend teams to integrate with AWS-based services and APIs Drive performance optimisation, accessibility, and user experience improvements Mentor and support engineers, providing technical leadership and guidance Work closely with product and design to translate requirements … scalable frontend architectures Solid understanding of API integration and distributed systems Experience working with AWS (e.g. API Gateway, Lambda, S3, CloudFront) Strong knowledge of performance optimisation, state management, and testing strategies Experience mentoring engineers and influencing technical direction Desirable Experience with or server-side rendering Exposure to micro ...

authority within the UI engineering discipline, providing leadership across design, architecture, standards, and delivery. The role is hands-on, focused on building scalable, high-performance UI systems while mentoring engineers and influencing best practices across multiple teams. Operating within agile teams, the Principal UI Engineer sets engineering direction, supports … architectural decision-making, and ensures the delivery of high-quality, robust UI solutions. Role Responsibilities Lead the design and development of scalable, high-performance UI applications. Provide technical leadership and mentoring to UI engineers across teams. Establish and maintain UI engineering standards, patterns, and best practices. Oversee solution design ...

platforms Drive the decomposition of monolithic systems into modular services, APIs, and event-driven components Collaborate with frontend and backend leaders to ensure scalability, performance, and consistency across the platform Introduce modern engineering practices and tooling to improve delivery quality, reliability, and developer experience Technical Leadership Provide architectural oversight … across multiple teams and applications Lead platform evolution initiatives including cloud migration, containerisation, and CI/CD automation Identify and resolve complex technical and performance issues across distributed systems Champion software craftsmanship, testing strategies, and design patterns Engineering Management & Culture Lead and mentor engineering managers and senior engineers Support ...

maintaining scalable Node.js applications and microservices built with TypeScript Building RESTful and GraphQL APIs using modern, best-in-class frameworks Implementing strong patterns for performance, reliability, and maintainability in cloud-native environments Collaborating with DevOps and Cloud Engineering teams to ensure smooth CI/CD pipelines and efficient deployments … with enterprise systems and complex third-party APIs, including payments, fulfilment, and ERP Experience delivering large-scale enterprise projects with multiple stakeholders Knowledge of performance optimisation and observability tooling Experience with SQL and NoSQL databases, including ORM/ODM frameworks Familiarity with Infrastructure-as-Code tools such ...

Software Engineer who thrives in fast-paced environments where performance truly matters? Do you want to help shape the technical direction of one of the most exciting and fastest-growing start-ups in the area? My client is building something special - a high-growth technology business with ambitious plans … role in scaling their platform. The Role As a Software Engineer, you will be working on a modern, cloud-based platform where performance, scalability and reliability are critical. This is not a maintenance role - you will be building, optimising and helping to define best practice from the ground up. ...

team. This is an opportunity to work with modern cloud-based data platforms, supporting business-critical systems while contributing to the ongoing development and optimisation of data infrastructure. You'll work closely with software engineers, infrastructure specialists, and stakeholders across the business, playing a key role in ensuring data … platforms remain secure, reliable, scalable, and high performing. The role offers a blend of database administration, data engineering, performance optimisation, and problem-solving in a dynamic environment. Key Responsibilities Manage and optimise cloud-hosted databases, ensuring high performance, availability, and security. Support reporting, analytics, and data-driven ...

team. This is an opportunity to work with modern cloud-based data platforms, supporting business-critical systems while contributing to the ongoing development and optimisation of data infrastructure. You'll work closely with software engineers, infrastructure specialists, and stakeholders across the business, playing a key role in ensuring data … platforms remain secure, reliable, scalable, and high performing. The role offers a blend of database administration, data engineering, performance optimisation, and problem-solving in a dynamic environment. Key Responsibilities Manage and optimise cloud-hosted databases, ensuring high performance, availability, and security. Support reporting, analytics, and data-driven ...

closely with engineering leadership to influence platform strategy and technical direction Mentor and support engineers across multiple teams Improve system reliability, observability, scalability and performance Contribute to system design reviews, technical planning and architectural discussions Champion engineering excellence, automation and continuous improvement across the organisation Collaborate with product … environments Exposure to event-driven architectures and messaging systems Experience working within high-growth SaaS or product-led organisations Knowledge of observability, monitoring and performance optimisation Salary & Benefits Up to £120,000 Fully remote within Northern Ireland Excellent benefits package Opportunity to operate at Staff Engineer level within ...

discussions and architectural decisions Write well-structured, testable, and maintainable code Collaborate closely with Product and Design to deliver user-focused features Continuously improve performance, reliability, and security across the platform Tech Environment Backend: Node.js (Express or similar) Frontend: React (modern JavaScript/TypeScript) Cloud: AWS (e.g., Lambda … skills Desirable Experience Experience in SaaS, platform-based, or EdTech environments Exposure to serverless architectures Experience with Docker or containerisation Awareness of scalability and performance optimisation techniques Why Apply? Join a purpose-led organisation focused on professional growth and learning Work in a supportive, forward-thinking engineering team ...

Swift and SwiftUI Provide technical guidance and code reviews for Android development Drive improvements in CI and CD, observability, analytics, crash reporting and application performance Implement and manage Datadog dashboards, monitoring and alerts alongside analytics tools including Google Analytics and Adobe Analytics Collaborate with Product, Design, Back End Engineering … services including Azure Functions, Blob Storage, S3 and Service Bus Strong understanding of REST APIs, OAuth2, mobile security, accessibility standards (WCAG and ARIA) and performance optimisation Experience with App Store and Google Play deployment processes Strong communication, stakeholder management, project organisation and scope management skills Nice to Have ...

Swift and SwiftUI Provide technical guidance and code reviews for Android development Drive improvements in CI and CD, observability, analytics, crash reporting and application performance Implement and manage Datadog dashboards, monitoring and alerts alongside analytics tools including Google Analytics and Adobe Analytics Collaborate with Product, Design, Back End Engineering … services including Azure Functions, Blob Storage, S3 and Service Bus Strong understanding of REST APIs, OAuth2, mobile security, accessibility standards (WCAG and ARIA) and performance optimisation Experience with App Store and Google Play deployment processes Strong communication, stakeholder management, project organisation and scope management skills Nice to Have ...

consistent, high-quality UX across browsers Experience with component libraries such as Material UI or Ant Design Proficiency with build tools Understanding of web performance optimisation and security best practices Desirable: Familiarity with Figma and Storybook for design collaboration and component development Exposure to financial or trading platforms ...

tests (end-to-end, integration, regression) using tools like Selenium, Cypress, or similar. Proficiency with build tools such as Webpack or Vite. Understanding of performance optimisation techniques and web security best practices. Appreciation of the full SDLC, with proactive involvement across design, development, QA, and post-release support. ...

platform teams Mentor and coach engineers and engineering managers, supporting career growth and building team capability Own and maintain high engineering standards around reliability, performance, and operational excellence Partner with product and platform teams to scope, prioritise, and deliver high-impact features Support incident response processes and lead efforts … working on cloud security platforms or adjacent security tooling Strong Linux systems knowledge, including low-level system internals Background in observability, reliability engineering, or performance optimisation at scale Why Apply? Base salary up to £150,000 Equity participation in a well-funded, fast-growing business Private healthcare Hybrid ...

complex system, make architectural calls and raise the bar for the engineers around them. What you'll be doing Designing and building high-performance, low-level systems in modern C++ Owning architecture and technical direction across complex, performance-critical components Working close to the hardware - memory management, concurrency … optimisation and systems-level problem solving Setting engineering standards and best practices across the team Mentoring and elevating the engineers around you Contributing to technical strategy at a senior level What they're looking for Deep, production-grade C++ expertise, with a strong grasp of modern C++ standards Solid ...

design systems Partner with Product and UX to deliver clean, intuitive interfaces Mentor engineers and contribute to the overall capability of the team Own performance, accessibility, and long-term maintainability of the frontend Work closely with backend teams on API design and integration Champion modern tooling, testing practices … experience with React and TypeScript at scale A proven track record of frontend technical leadership in a commercial environment Deep understanding of state management, performance optimisation, and UI architecture Experience building or working closely with design systems (Storybook or equivalent) Solid knowledge of modern testing approaches: Jest, React ...

design systems Partner with Product and UX to deliver clean, intuitive interfaces Mentor engineers and contribute to the overall capability of the team Own performance, accessibility, and long-term maintainability of the frontend Work closely with backend teams on API design and integration Champion modern tooling, testing practices … experience with React and TypeScript at scale A proven track record of frontend technical leadership in a commercial environment Deep understanding of state management, performance optimisation, and UI architecture Experience building or working closely with design systems (Storybook or equivalent) Solid knowledge of modern testing approaches: Jest, React ...

global leader in digital asset innovation, building technology that bridges traditional finance and the emerging crypto economy. Their mission is to create trusted, high-performance systems that enable institutions to seamlessly integrate digital assets into their portfolios and operations. As part of their continued global expansion, they are establishing … Develop and maintain real-time systems connecting multiple crypto exchanges. * Work with event-driven architectures to synchronize large volumes of data efficiently. * Optimize JVM performance and contribute to high-availability, low-latency system design. * Collaborate closely with other developers and stakeholders to deliver robust, scalable solutions. * Participate in agile ...

scale. It is designed for a technical leader who thrives on solving genuinely hard problems in financial markets and can operate across system design, performance engineering, and cross-functional collaboration. Key Responsibilities * Architect, implement, and maintain core exchange and clearing infrastructure, ensuring the system is performant, scalable, and ultra … Bachelor's degree in Computer Science, Software Engineering, or a related discipline. * 8+ years of professional software engineering experience, with significant time in high-performance, low-latency distributed systems. * Expert-level Java proficiency, including deep knowledge of concurrency, memory management, JVM internals, and performance optimisation. * Experience with Hydra ...