14 of 14 Performance Optimisation Jobs in West Sussex

Backend Engineer (Golang) - Grow into a Senior Role

Hiring Organisation
KYP
Location
Crawley, West Sussex, UK
Employment Type
Full-time
trusted with real ownership from day one. This is not a "ticket-factory" role, you'll be involved in design decisions, architecture discussions, and performance optimisation, with direct exposure to the CTO and senior engineers. If you enjoy solving complex backend problems, learning modern cloud-native architecture … want a clear path toward senior responsibility, this role is for you. Responsibilities Design, build, test and maintain high-performance Go microservices Own features end-to-end - from system design through to production Work on scalable, event-driven and data-heavy services powering real-time risk scoring Collaborate closely ...

Lead Web Developer

Hiring Organisation
Reed
Location
Worthing, West Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£64,000 - £84,000 per annum
them for the team and the user You thrive in fast-paced environments and enjoy guiding delivery at speed and quality You value craftsmanship: performance, reliability, accessibility, and great developer experience You enjoy mentoring, coaching, and creating a culture of continuous improvement You’re motivated by measurable impact … across front end, APIs, and services (component libraries, CI/CD, observability) Writing high-quality code and conducting thoughtful code reviews Guiding technical standards: performance budgets, testing strategy, documentation, and reliability practices Collaborating with product, design, and data to turn requirements into roadmap and clear user outcomes Owning release ...

Principal Software Engineer (.Net)

Hiring Organisation
Primis
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...

Principal Software Engineer

Hiring Organisation
OpenSolar
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...

Web Developer

Hiring Organisation
Office Angels
Location
Hassocks, West Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£45,000 - £50,000 per annum
detail-oriented Web Developer & Digital Experience professional to join their global marketing function. This role will take ownership of multiple WordPress websites, enhancing functionality, performance and user experience across international markets. You will work closely with creative and marketing teams to translate design concepts into engaging, responsive digital experiences … internal communications platforms and email marketing templates within Salesforce Marketing Cloud. Key Responsibilities Manage and optimise multiple WordPress websites Enhance UX/UI, site performance, SEO and accessibility Build and maintain responsive front-end components (HTML, CSS, JavaScript) Collaborate on landing pages, product pages and interactive digital experiences Support ...

Web Developer and Digital Experience

Hiring Organisation
Office Angels
Location
Hassocks, West Sussex, England, United Kingdom
Employment Type
Full-Time
Salary
£30,000 - £45,000 per annum
detail-oriented Web Developer & Digital Experience professional to join their global marketing function. This role will take ownership of multiple WordPress websites, enhancing functionality, performance and user experience across international markets. You will work closely with creative and marketing teams to translate design concepts into engaging, responsive digital experiences … internal communications platforms and email marketing templates within Salesforce Marketing Cloud. Key Responsibilities Manage and optimise multiple WordPress websites Enhance UX/UI, site performance, SEO and accessibility Build and maintain responsive front-end components (HTML, CSS, JavaScript) Collaborate on landing pages, product pages and interactive digital experiences Support ...

Senior AI Engineer

Hiring Organisation
Circuit Medical
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...

Senior Engineer (Frontend-First)

Hiring Organisation
field doctor
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...

React Native Developer

Hiring Organisation
Inspiring Teachers
Location
Crawley, West Sussex, UK
Employment Type
Full-time
multi-tenant platform. You'll work across the full mobile lifecycle—from turning product ideas into polished iOS and Android features, to shaping architecture, performance, and release quality—while collaborating closely with our product team. KEY RESPONSIBILITIES Design, build, and maintain high-quality cross-platform mobile apps using React … Native for iOS and Android Translate product and design requirements into well-structured, performant, and maintainable mobile features Own mobile architecture, state management, and performance optimisation across the app Integrate with APIs, authentication, and third-party services, including occasional native module work when needed Ensure high code quality ...

NVIDIA Isaac Sim (Simulation Engineer) - 54835

Hiring Organisation
Turing
Location
Crawley, West Sussex, UK
Employment Type
Full-time
configure them for perception tasks (semantic labelling) and physics interaction (collision geometry, articulation). Environment Assembly: Build and validate simulation scenes, ensuring performance optimization (LODs, proxy meshes) and physics determinism. Pipeline & Logic: Use Python & OmniKit to write behaviour scripts and document the workflow for future scalability. Must-Have Qualifications ...

Senior Magento Developer (Backend)

Hiring Organisation
INDEZ
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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. ...

Head of Paid Media

Hiring Organisation
Amplify
Location
Crawley, West Sussex, UK
Employment Type
Full-time
overall growth and go-to-market strategy. This is not an agency management role. This is not a traffic-only role. This is a performance and revenue ownership role. Key Responsibilities Own paid acquisition strategy and execution across platforms such as Google Ads, LinkedIn, Meta, and other relevant channels … paid acquisition campaigns end-to-end, including ads, landing pages, and supporting assets Use modern AI-powered tools to accelerate testing, creative iteration, and performance optimization Manage budgets, forecasting, and spend allocation to maximize efficiency and ROI Analyze campaign and funnel performance to identify opportunities for improvement ...

SC Cleared Splunk Engineer

Hiring Organisation
Hamilton Barnes
Location
Crawley, West Sussex, UK
Employment Type
Full-time
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 ...