Frontend Engineer (React.js)

Reposted 2 Days Ago
Hiring Remotely in Spain
Remote
Senior level
Artificial Intelligence • Software
The Role
Develop scalable, responsive web applications with React.js, translating designs into accessible, high-quality interfaces. Responsibilities include frontend architecture, state management, performance optimization, API integration, automated end-to-end and unit testing, code reviews, troubleshooting, documentation, and collaboration with backend developers. The role also requires staying current with frontend technologies and contributing to architectural and development best practices.
Summary Generated by Built In

Frontend Engineer (Mid-Level)

Who is Parser?

Technology alone does not create impact—the right teams do. Founded in 2018, Parser is a boutique technology services and consulting firm helping global organisations solve complex business challenges through digital transformation, product development and AI enablement.

We are a fast-growing team of 340+ engineers and consultants across Europe (UK, Spain, Portugal), the Americas (US, Argentina, Uruguay, Colombia), and the Middle East. We combine global reach with a mindset focused on agility, senior expertise, and close collaboration.

We work as an extension of our clients’ teams, helping them define the right problems, shape solutions, and deliver technology-driven outcomes that create measurable business value. Our expertise spans software engineering, AI & data, product development, and customer experience, delivered by teams that combine strong technical depth with a consulting mindset.

Why Join Us?
If you are looking for a place where you can think beyond execution, take true ownership of outcomes, influence decisions, and continuously learn alongside top-tier specialists in a truly global environment, we’d love to meet you.

How will you impact?

As a Mid-Level Frontend Engineer, you will own consumer-facing web features end-to-end within a microfrontend ecosystem. Your work directly drives organic acquisition and user experience through web performance optimizations, seamless right-to-left localization, and reliable product delivery.

Your key responsibilities:

Your responsibilities include, but not limited to:

  • Build and ship responsive, mobile-first user interfaces using React, TypeScript, and Next.js across server- and client-rendered applications.
  • Develop reusable design system components supporting multi-country configuration, internationalisation, and right-to-left (RTL) Arabic layouts.
  • Optimize web performance and Core Web Vitals, including bundle size, hydration costs, rendering paths, image/font loading, and caching strategies.
  • Maintain robust application contracts and shared libraries across microfrontend architectures.
  • Implement reliable analytics tracking, feature flags, and unit, component, and end-to-end testing (using Playwright and Storybook).
  • Utilize production signals, real-user monitoring, and error tracking tools to proactively resolve performance and user-facing issues.
  • Collaborate closely with product, design, SEO, and backend teams, delivering thoughtful code reviews and engineering improvements.

What you’ll bring to the role:

Essential Requirements:

  • 3+ years of professional frontend engineering experience delivering and operating production web applications.
  • Strong proficiency in React, TypeScript, and modern state/data-fetching patterns.
  • Hands-on experience with Next.js (SSR/SSG, routing, server vs. client-side execution).
  • Solid foundation in semantic HTML, CSS Modules/responsive layout systems, and web accessibility fundamentals.
  • Practical experience with API integration, unit/component testing, and automated E2E testing (Playwright preferred).
  • Proven understanding of Core Web Vitals, web performance measurement, and debugging techniques.

Desirable Requirements:

  • Experience with microfrontend architectures, monorepos, or shared npm packages.
  • Hands-on experience with internationalisation (i18n), right-to-left (RTL) layouts, and SEO-driven products.
  • Exposure to frontend observability, tag management, feature flagging, or geospatial/maps APIs.

Location:

Spain (Remote) Candidates must be able to accommodate UAE working hours.

You will receive: 

  • The chance to join an organization with triple-digit growth that is changing the paradigm on how software products are built.
  • The opportunity to be part of an amazing, multicultural community of tech experts.
  • A highly competitive compensation package.
  • A flexible and hybrid working environment.
  • Medical insurance.

Parser is committed to fostering an inclusive workplace and providing equal employment opportunities to all applicants regardless of race, religion, gender, sexual orientation, age, disability, or any other protected characteristic under applicable law.

If you require reasonable accommodations during the recruitment process, please let us know and we will work with you to support your participation.

By applying to this role, you acknowledge that your personal data will be processed in accordance with Parser’s Privacy Notice for recruitment purposes.

Parser may use AI-assisted tools during certain stages of the recruitment process to support operational efficiency. Our recruiting teams use AI to streamline note-taking and scheduling. All hiring decisions are made by people, with human review and oversight.


Come and join our #ParserCommunity.

https://parserdigital.com/

Follow us on Linkedin

Skills Required

  • Bachelor's degree in Computer Science, Engineering, or a related field
  • 6+ years of frontend development experience delivering complex web applications
  • Proficiency in JavaScript or TypeScript and frontend frameworks, especially React.js
  • Strong knowledge of HTML5, CSS3, and CSS preprocessors such as Sass or Less
  • Experience with state management tools such as Redux, React Query, or Context API
  • Experience integrating frontend applications with RESTful APIs
  • Experience with testing frameworks such as Cypress or Playwright
  • Familiarity with asynchronous programming techniques
  • Familiarity with graph libraries such as eCharts
  • Basic understanding of Python
  • Knowledge of AWS or Google Cloud Platform
  • Experience with Git and CI/CD pipelines
  • Understanding of web accessibility standards and responsive design principles
  • Familiarity with agile development methodologies
  • Understanding of micro-frontend architecture
  • Availability to travel to the UK office in Hayes, West London, once per month for candidates based in Spain
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The Company
HQ: London
174 Employees
Year Founded: 2018

What We Do

At Parser we help organisations leverage on digital to advance their business strategy. For us, creativity, talent, and passion are indispensable to succeed. This is why we are committed to building, nurturing, and empowering a diverse, multi-disciplinary environment, where every team member can grow professionally and achieve their ambitions, while helping our clients deliver amazing digital products. Thanks to our flexible, distributed model of global operation and the high calibre of our experts, we have enjoyed triple digit growth over the past five years, creating amazing career opportunities for our people across 4 continents. Our services: - Digital Strategy & Transformation We help you understand market trends, relevant technologies, and aligned with your business strategy we create your vision and set the digital direction. This enables you to focus efforts and integrate business and technology across your organisation. - Digital Portfolio Management Based on a clear vision and direction, we help you assess your position, execute your digital strategy and manage your portfolio. We do this by integrating a range of diverse business and technical practises, transforming your organisation in the process. - Product & Service Development We help you create new experiences by designing user journeys that bridge all of the relevant departments of your organisation. By harnessing our ecosystem of specialised talent, we can provide relevant and focused expertise on demand.

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