Senior JavaScript Developer - Liverpool - Homerun B.V.

    Homerun B.V.
    Homerun B.V. Liverpool

    1 week ago

    £60,000 - £80,000 (GBP) per year
    Description

    At Monterosa we're looking for a Senior JavaScript Developer to join our team.

    At Monterosa, we are passionate about bringing people together through engaging and interactive experiences in entertainment and sport. Our mission is to enhance popular culture by delivering innovative solutions for some of the world's most beloved brands in media, sports, and entertainment.

    We strive to inspire and empower organisations to connect with their audiences in meaningful ways.

    Job summary


    As a Front-End Engineer at Monterosa, you will be responsible for developing innovative and engaging user interfaces for our digital products, ensuring they align with Monterosa's overall goals. You will utilise your expertise in front-end technologies, responsive design, and advanced tooling to create high-quality, user‑centric experiences.

    Key responsibilities

    • User Interface Development: Designing and developing intuitive, responsive user interfaces using React and other front‑end technologies. Ensure that the UI meets design specifications, is visually appealing, and provides an optimal user experience across various devices and screen sizes.

    • Integration with Backend Services: Collaborating with backend engineers to integrate front‑end interfaces with backend APIs for data communication, authentication, and error handling. Ensure seamless interaction between the front‑end and back‑end components to deliver a cohesive user experience.

    • Performance Optimisation: Implementing performance optimisation techniques such as code splitting, lazy loading, caching, and network optimisation to improve the speed and efficiency of front‑end applications. Profile and analyse performance bottlenecks to identify areas for improvement and enhance overall responsiveness.

    • Code Quality and Maintenance: Writing clean, maintainable code according to industry best practices and coding standards. Regularly refactor and optimise existing codebase to improve readability, scalability, and maintainability. Conduct code reviews and collaborate with team members to ensure code quality and consistency.

    • Continuous Learning and Innovation: Stay updated with the latest front‑end technologies, trends, and best practices. Experiment with new tools and techniques to innovate and enhance the front‑end development process. Share knowledge and mentor junior team members to foster a culture of continuous learning and improvement.

      • About you

      • You are a seasoned Frontend Developer with expertise in , TypeScript, and modern frontend technologies to join our team. You have a strong eye for detail and a passion for building high‑performance, scalable, and maintainable web applications.

      • You have experience with testing frameworks like Jest, React Testing Library, or Cypress, ensuring code quality and stability. Knowledge of CI/CD pipelines, Git workflows, and containerisation with Docker is a plus.

      • You enjoy collaborating with designers, backend developers, and stakeholders to bring seamless digital experiences to life. If you are passionate about frontend development and staying up to date with the latest technologies,

    Qualifications


    Core React & Frontend Development

    • Strong understanding of React fundamentals, including JSX, Virtual DOM, and component‑based architecture.

    • Experience with responsive design techniques and tools to ensure optimal user experiences across different devices.

    • Proficiency in HTML5, CSS3 (Flexbox, Grid), and modern CSS frameworks (e.g., Tailwind CSS, Styled Components, Material UI).

    JavaScript & TypeScript Expertise

    • Mastery of advanced JavaScript (ES6+) concepts, including async/await, promises, closures, and functional programming.

    • Hands‑on experience with TypeScript for type safety and scalable frontend architecture.

    State Management & API Integration

    • Deep knowledge of React state management solutions like Redux, Redux‑Saga, Zustand, or React Query.

    • Experience integrating and handling RESTful APIs and GraphQL, including authentication, error handling, and security considerations.

    Performance Optimisation & Tooling

    • Expertise in frontend performance optimisation techniques, including code splitting, lazy loading, memoisation, and caching.

    • Familiarity with Webpack, ESLint, Prettier, Vite, or ESBuild to enhance development workflows.

    • Understanding of browser security constraints, accessibility (WCAG standards), and best practices for frontend security (XSS, CSRF, CORS, SQL Injection protection).

    Debugging & Profiling

    • Advanced experience with browser developer tools, Chrome DevTools, Lighthouse, and performance monitoring tools to analyse memory usage, CPU performance, and network activity.

    • Ability to diagnose and resolve frontend performance bottlenecks efficiently.

    Apply for the job


    Do you want to join our team as our new Senior Front‑End Engineer? Then we'd love to hear from you


    #J-18808-Ljbffr
  • Work in company

    Javascript Developer

    Only for registered members

    This JavaScript Developer will play a crucial role in new product & feature development offering high level of autonomy to help shape the future of this market leading solution. · Solid JavaScript/ typescript/ node exposure · A strong communicator who is happy to get involved wi ...

    Manchester

    2 weeks ago

  • Work in company

    Javascript Developer

    Lantec

    jQuery / JavaScript Developer (Strong UI & Design Skills) · Office-based – Bolton · For a complete understanding of this opportunity, and what will be required to be a successful applicant, read on. · Are you a front-end developer who enjoys mixing clean, efficient JavaScript wit ...

    Bolton £45,000 - £85,000 (GBP) per year

    1 day ago

  • Work in company

    Senior JavaScript Developer

    Only for registered members

    We're looking for a Senior JavaScript Developer to join our Scrum Team working collaboratively in an Agile environment. · We'll drive key front-end and back-end JavaScript technology decisions and build maintainable, scalable solutions for our clients. · You will develop modern a ...

    Manchester

    1 month ago

  • Work in company Remote job

    Senior JavaScript Developer

    Only for registered members

    Company Description · Version 1 has celebrated over 28 years in Technology Services and continues to be trusted by global brands to deliver solutions that drive customer success. Our expertise enables our customers to navigate the rapidly changing Digital-First world we live in. ...

    Manchester, England £60,000 - £95,000 (GBP) per year

    6 days ago

  • Work in company

    Fullstack JavaScript Developer

    Only for registered members

    Design develop and maintain both front end and back end components of web applications. · ...

    Holmes Chapel

    2 weeks ago

  • Work in company Remote job

    Fullstack JavaScript Developer

    Only for registered members

    Job Description · Design, develop, and maintain both front-end and back-end components of web applications. Proficient in multiple programming languages, databases, and frameworks. Collaborate with cross-functional teams to deliver robust, scalable software solutions. · 52500/yea ...

    Holmes Chapel, England £52,500 (GBP) per year

    6 days ago

  • Work in company

    JavaScript Front End Developer

    Only for registered members

    · Job Description · JavaScript Front End Developer - Manchester · £30000K-£60000K negotiable on experience ( looking for mid-level to senior level) · (Must be eligible to work in UK) · My client is a well-known company looking for a few mid-level to senior Front End JavaScript D ...

    Manchester, United Kingdom £30,000 - £60,000 (GBP) per year

    5 days ago

  • Work in company

    Lead JavaScript Front End Developer

    Only for registered members

    · Job Description · JavaScript Front End Developer Manchester · ( looking for mid-level to senior level) · (Must be eligible to work in UK) · My client is a well-known company looking for a few mid-level to senior Front End JavaScript Developers. As a Front-End JavaScript Develo ...

    Manchester, United Kingdom

    5 days ago

  • Work in company

    Senior Shopify Developer – Liverpool (Hybrid) - 45-50k

    Only for registered members

    Senior Shopify developer role in an award-winning eCommerce platform vendor & shopify plus partner. · Demonstrable experience of shopify development · Demonstrable experience with other relevant technology (liquid / custom theme development) · ...

    Liverpool, England

    2 weeks ago

  • Work in company

    Front End Developer

    Only for registered members

    · Job Description · Focus IT is working with a rapidly expanding technology business in the heart of Liverpool. · As a Front End Developer, you will join a small established team, working alongside .NET Developers and Front End Developer to aid with designing and developing new ...

    Liverpool, United Kingdom £35,000 - £75,000 (GBP) per year

    5 days ago

  • Work in company

    Software Engineer

    Only for registered members

    Company Overview · Four Chambers Recruitment is based in Liverpool, Merseyside, and offers bespoke recruitment solutions across the UK. With a team deeply knowledgeable in diverse sectors, we pride ourselves on matching exceptional talent with organizations' unique needs. Our com ...

    Liverpool £42,000 - £90,000 (GBP) per year

    4 days ago

  • Work in company

    Web Developer

    Only for registered members

    We are looking for a Web Developer to support and develop our digital platforms as the business continues to grow. · , · , · , ...

    Liverpool, England

    1 week ago

  • Work in company

    ServiceNow Platform Lead

    Only for registered members

    This role involves managing platform upgrades handling incidents and requests developing customised solutions within the ServiceNow platform. · Taking ownership of the product lifecycle collaborating with teams ensuring seamless integration adoption of ServiceNow solutions. · ...

    Liverpool, England

    1 month ago

  • Work in company

    SEO Account Manager

    Only for registered members

    We are seeking a highly skilled and motivated SEO Manager to lead our search engine optimisation strategies. · ...

    Liverpool

    1 month ago

  • Work in company

    Web Developer

    Only for registered members

    We're a friendly, growing team based in a modern, welcoming office environment, · Maintaining and improving our websites and digital tools · a practical hands-on role focused on maintaining and improving our websites and digital tools. · ...

    Liverpool

    1 week ago

  • Work in company

    Finance Systems Integration Developer

    Only for registered members

    The University of Liverpool¿s IT Services Department is recruiting a Finance System Integration Developer to join its Finance Systems Team. · This post is fixed term until 31 March 2028. ...

    Liverpool

    3 weeks ago

  • Work in company

    Systems Developer

    Only for registered members

    We're looking for a skilled Systems Developer to design build and enhance business systems with a focus on Jira Service Management and ITSM. · Experience as a Systems or Application Developer. · Strong hands‑on experience with Jira and ITSM. · Scripting skills (Python PowerShell ...

    Liverpool, England

    3 weeks ago

  • Work in company

    Systems Developer – E-Commerce Integrations

    Only for registered members

    We are seeking a Systems Developer with a strong background in e-commerce systems and backend integrations to join our fast-paced, tech-forward software engineering team. · ...

    Liverpool, England

    1 month ago

  • · Our client, a highly regarded grammar school in Liverpool, is seeking an enthusiastic and forward-thinking Computer Science Teacher · to join their successful Computing Faculty from January 2026. This permanent, full-time position offers the chance to teach aspirational studen ...

    Liverpool, United Kingdom

    5 days ago

  • Work in company

    Senior Shopify Developer – Liverpool (Hybrid) - 45-50k

    Only for registered members

    This Senior Shopify Developer role is attracting a high number of applicants at the moment so be sure to get in contact ASAP to avoid missing out. · Demonstrable experience of Shopify Development Demonstrable experience with other relevant technology (Liquid / Custom Theme Develo ...

    Liverpool

    2 weeks ago

  • Work in company

    Senior Shopify Developer – Liverpool

    Only for registered members

    Contribute to the development of Shopify custom themes and applications using Liquid. · Participate in the modernization of our architectures with headless solutions. · ...

    Liverpool

    2 weeks ago

Jobs
>
Senior javascript developer
>
Jobs for Senior javascript developer in Liverpool