Holborn

Job Vacancy React Native developer - 12-month contract - Brussels

Brussels

Holborn

Job position

Contractor
Permanent
As soon as possible
12 months
> 10 years experience
Hybrid
Brussels, Brussels-Capital, Belgium
Published on 11/11/2025

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React Native developer - 12-month contract - Brussels

Our important client is currently looking for a React Native developer for a 12-month contract based in Brussels. Hybrid role with 2 days onsite required

Please find the description below:

Senior React Native developer responsible for building, maintaining, and evolving complex mobile applications for iOS and Android platforms.

A key contributor in ensuring scalability, reliability, and developer productivity through clean architecture, testing, and internal tooling.

Tasks

  • Conduct comprehensive PR reviews, enforcing coding standards, maintainability, and architectural consistency across the codebase.

  • Lead accessibility development, ensuring compliance with accessibility guidelines and promoting inclusive design practices.

  • Design and maintain third-party integrations, including Adobe, Digimobee, and Public Transport Offer (PTO) systems, enabling seamless interoperability with external services.

  • Define and evolve the application architecture, component hierarchy, and code styling guidelines, ensuring scalability and long-term maintainability.

  • Perform extensive unit and end-to-end (E2E) testing to guarantee app stability, reliability, and regression-free releases.

  • Implement and maintain monitoring and observability tools such as Dynatrace and Instabug, improving visibility into performance, errors, and user experience in production.

  • Build and maintain internal tools aimed at improving developer experience, automation, and team productivity throughout the development lifecycle.

  • Collaborate closely with product, design, and backend teams to align technical decisions with business and UX goals.

  • Continuously drive performance optimization, build stability, and process improvements across the mobile ecosystem.

Evaluation criteria:

  • Proven experience with large-scale React Native applications.

  • Proficiency in JavaScript/TypeScript, state management (Redux, Context API, Recoil), and component-based architecture.

  • Familiarity with native iOS and Android modules, build pipelines, and app store deployment processes.

  • Demonstrated adherence to established coding guidelines.

  • Experience conducting PR reviews and enforcing code consistency.

  • Familiarity with linting, formatting, and architectural governance.

  • Successful delivery of integrations with external services (e.g., Adobe, Digimobee, Public Transport Offer systems).

  • Ability to troubleshoot, document, and maintain complex integrations.

  • Proven track record of designing scalable mobile architectures.

  • Experience with modularization, performance optimization, and long-term codebase maintenance.

  • Demonstrated use of unit, integration, and E2E testing frameworks

  • Experience maintaining automated CI/CD pipelines for mobile apps.

  • Experience configuring and using observability tools (e.g., Dynatrace, Instabug, Firebase Crashlytics).

  • Evidence of collaboration with product, design, and backend teams.

  • Demonstrated history of driving improvements in app performance, build times, and developer workflows.

Conformity Criteria

  • A Minimum of 8 years of proven experience in React Native development

  • Expertise in the seamless integration of mobile applications with BFF solutions

  • Deep familiarity with Agile methodologies, emphasizing leadership, collaboration and rapid, iterative progress.

  • Fluency in English is essential

  • Hands-on experience with CI/CD pipelines for mobile apps

  • Experience integrating automated tests into development workflow

  • Consistently delivers well-tested, maintainable, and scalable code.

  • Participates in code reviews, mentoring, and knowledge sharing.

  • Uses static analysis tools, linters, and profiling tools effectively.

  • Tracks and resolves bugs or issues proactively.

If you are interested please send me your CV and I will contact you as soon as possible with further details

Candidate profile

Conformity Criteria

  • A Minimum of 8 years of proven experience in React Native development

  • Expertise in the seamless integration of mobile applications with BFF solutions

  • Deep familiarity with Agile methodologies, emphasizing leadership, collaboration and rapid, iterative progress.

  • Fluency in English is essential

  • Hands-on experience with CI/CD pipelines for mobile apps

  • Experience integrating automated tests into development workflow

  • Consistently delivers well-tested, maintainable, and scalable code.

  • Participates in code reviews, mentoring, and knowledge sharing.

  • Uses static analysis tools, linters, and profiling tools effectively.

  • Tracks and resolves bugs or issues proactively.

Working environment

React Native developer - 12-month contract - Brussels

Our important client is currently looking for a React Native developer for a 12-month contract based in Brussels.

Please find the description below:

Senior React Native developer responsible for building, maintaining, and evolving complex mobile applications for iOS and Android platforms.

A key contributor in ensuring scalability, reliability, and developer productivity through clean architecture, testing, and internal tooling.

Issy-les-Moulineaux, Île-de-France
< 20 employees
IT services
HOLBORN accompagne ses clients dans la conception de leur stratégie et dans la mise en œuvre opérationnelle pour rendre leur entreprise plus performante. Nous accompagnons en France, au Moyen-Orient et en Afrique du Nord la stratégie de développement de nos clients dans les domaines du Conseil, de la Transformation Digitale et de la Cyber Sécurité. Nous offrons un portefeuille complet de services et de solutions accompagné d’un modèle de proximité conjugué à un réseau mondial de prestation de services. Les prestations proposées par HOLBORN se structurent autour de quatre grands pôles basés sur un cadre de références : 1. Conseil & Audit : Nous accompagnons nos clients dans la définition et le déploiement de leur stratégie IT en leur offrant une prestation de conseils complète. Du diagnostic de l’existant à la définition d’une vision stratégique, en passant par la gestion de leurs risques. 2. Digital & Data : Nous accompagnons les DSI dans leurs projets de transformation digitale dans un contexte de ruptures technologiques permanentes. 3. Cyber Risk & Strategy : Nous aidons nos clients à appréhender la cybersécurité au travers d’une meilleure stratégie et d’une meilleure adoption des nouvelles technologies. 4. Formation : Nos proposons des parcours sur-mesure alliant les impératifs métiers aux exigences modernes d’une formation : multimodale, mobile, centrée sur l’apprenant, sociale et expérientielle. Nous avons conçu un portefeuille de services de bout-en-bout couvrant l’ensemble des besoins de transformation de votre structure. Nos experts et nos consultants développent des offres performantes pour vous aider à vous adapter à un environnement de plus en plus complexe. Nous mettons à votre service notre passion pour l’innovation et notre sens de la technologie.

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React Native developer - 12-month contract - Brussels

Holborn

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