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React Developer

Welvaart
4 days ago
Full-time
On-site
Lisbon, Portugal

About Welvaart

At Welvaart, we create technology solutions that put people at the center.
Our close leadership style and flexible culture of growth empower our teams and elevate the quality of our delivery. We combine rigor, innovation, and empathy to drive projects that transform businesses and build lasting relationships of trust.

We complement this vision with a performance‑driven Digital Marketing offering, helping companies strengthen their visibility, enhance their online presence, and accelerate growth through smart, measurable strategies.


Project

We are seeking a Senior Front-End Developer with strong expertise in React and a particular focus on Forms, Tables & Lists, and Web Accessibility. You will work within a multidisciplinary team delivering high-quality, accessible, and user‑friendly interfaces for large-scale digital products.

Role

    • Develop and maintain modern web interfaces using React (17 & 19).
    • Build complex forms, dynamic tables, and lists with high usability and performance.
    • Ensure full Web Accessibility (WCAG) compliance across all UI components.
    • Create reusable interface components using Material UI.
    • Implement and validate forms using Formik or equivalent libraries.
    • Manage application state with Redux or similar tools.
    • Write scalable, strongly typed code using TypeScript.
    • Participate in peer reviews and contribute to code quality standards.
    • Collaborate closely with UX, Backend, and Product teams throughout the SDLC.
    • Use GIT for version control and workflow management.

    We are looking for

    • 7+ years of professional Front-End development experience.
    • Strong knowledge of: React 17 & 19, Material UI, Formik (or similar), Redux (or similar), TypeScript, GIT.
    • Experience building: Complex forms, Interactive tables and lists, Accessible interfaces (WCAG).
    • Understanding of the full Software Development Life Cycle (SDLC).
    • Ability to work in an international, multicultural environment.
    • Strong communication and teamwork skills.

    What you can discover with us?

    • Be part of a tech start-up
    • Different scopes of project in different sectors
    • Structure of fairness and equity salary (Consultant Profile)
    • Training & Certification
    • Career Path management
    • More than 30 Partnerships

    UNLEASH THE POWER OF YOUR CAREER