React Developer - Spain freelancer

Madrid  ‐ Remote
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Architecture ReactJS JavaScript (Programming Language) Cascading Style Sheets (CSS) Español Object-Oriented Software Development TypeScript Banking Services Software Design Patterns Testing Innovation HTML Test Suite Agile Methodology Unit Testing Software Quality Code Review Web Development Scalability Project Management Pair Programming Preprocessor Requirement Prioritization Stakeholder Management Syntactically Awesome Style Sheets (SASS) Solid Principles Logistics Operations Technical Acumen Domain Driven Development Software Library


Westhouse is a leading company that operates in the field of research & selection of personnel, project management and is authorized for an indefinite period for the provision of work with Italian Ministerial Authorization Prot. N. of

For an important partner of ours, International Leader in IT consultancy field, we are looking for a EU React Developer freelancer, resident in Spain, for an important project opportunity in the banking sector.

Details below:

Technical skills:

you will contribute to web development with React, Typescript, Javascript, HTML, and CSS. Given that a large part of our product is based on code libraries that will be consumed by multiple teams, a strong emphasis is placed on testing. Your role includes crafting a robust test suite using Jest and react-testing-library. Actively contribute to the enhancement and definition of our Front End architecture, rooted in clean architecture principles, SOLID, hexagonal architecture, and Domain-Driven Design (DDD). Collaborating in the improvement of our shared libraries, fostering a culture that welcomes individual contributions from all engineering team members, regardless of seniority! Engage in code reviews, pair programming sessions, and actively contribute to reinforcing common best practices to maintain code quality and consistency. Approach tasks with a results-oriented mindset, taking ownership of your deliveries and encouraging strong communication and collaboration with team members and stakeholders. We're all committed to promote and foster a healthy and collaborative culture!

What are we looking for in this position?
3+ years of hands-on experience in Javascript. 1+ years of proficient experience with Typescript, expertise in generics, type narrowing, and other advanced topics will be valued. A minimum of 2 years of focused experience with ReactJS frameworks last versions, demonstrating a deep understanding of compound components and associated concepts. Proven track record in writing unit tests using Jest and react-testing-library, or similar testing frameworks. Proficiency in CSS, with a preference for experience with Sass or Less preprocessors or CSS-in-JS solutions. Knowledge of Object-Oriented Programming (OOP) in the context of Javascript. Familiarity with SOLID principles, clean architecture concepts, and a profound understanding of general software design patterns, including where and why to apply them.

Nice to have:
understanding of hexagonal (ports & adapters) architecture and Domain-Driven Design (DDD). Good communication skills both in English and Spanish at a B2-C1 level.

Work Experience:
3+ years of JS experience
2 years of experience in Typescript, (Generic,)
2 years of experience in React, (needs to be familiar with the latest versions of React, 16 and 18)
Testing (unit) with React Testing Library (JEST)
Proficiency in CSS (Styled Components)

Nice to have: Knowledge of OOP (object-oriented programming)
Languages: Native/Fluent command of the Spanish language Level of English equivalent to B2.

Preferred Technical Expertise:
Knowledge of Domain Driven Development architecture and Hexagonal architecture (layered responsibilities) Design Patterns Accessibility knowledge. Development of applications that comply with security standards.

Contract estimated duration: min. 6 months
- Working hours details: 9-18
- Preferred location: Madrid
- Languages needed: English, Spanish,
- English level required : Advanced (C1)
- Details about experience required: 3+ years
- Details about rates expected: Depends on experience
- Other comments: Can be remote but only for Spain. We are the 100% digital bank and we are currently undergoing a technological transformation and international expansion. In 2016 the re-launch of the Bank began and since then we have been in continuous expansion and growth, especially in our technological side. We work in a start-up format, using agile methodologies to take our clients' experience to the next level. In 2019 we launched the Bank in the Netherlands, Germany and Portugal and recently following also the launch in Argentina with others to follow. Our culture makes us different; social and diversity clubs are part of our essence and allow us to live our culture every day. We are a flexible and fast adapting team that currently works remotely most of the time using all kinds of communication tools, we havent noticed the change! Mission: We're building an innovative, cutting-edge, banking platform designed for seamless international expansion, prioritizing scalability, extension, and accessibility. Our architectural foundation embraces Domain-Driven Design, Ports & Adapters pattern, and other clean architecture concepts meticulously tailored to meet our unique requirements. Join us in shaping the future of Front End development within this visionary project!

Only CVs with consent to the storage and processing of personal data in accordance with EU Regulation (GDPR) will be taken into consideration. Candidates of both genres (Legislative Decree No. ) are invited to read the Privacy Policy on the website (Articles 13 and 14 of EU Reg. ). We also inform you that the Resumé may be considered for other vacant positions and could also be managed and communicated through the use of own tools and/or the client company.

Start date
Westhouse Managed Services Srl
Published at
Project ID:
Contract type
100 % remote
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