Frontend Developer (H/F) – React

PIXID; Courbevoie; Sur place; EUR 70 000 - 110 000; Plein temps

Résumé du poste

Pixid is undergoing an ambitious transformation and is seeking senior frontend leadership to drive the modernization of the frontend stack. You will migrate Angular and mobile applications to React/React Native, define engineering standards, and establish scalable practices within a fast-evolving SaaS platform.

You will act as a technical leader, mentoring developers and collaborating with Product, Design, and Backend teams to deliver high-quality UX and reusable components, while pursuing

Qualifications

• 6+ years of frontend development experience with focus on React/React Native.
• Experience leading React migration projects in complex/enterprise environments.
• Strong expertise in frontend testing strategies (Jest, Playwright) and test coverage.

Responsabilités

• Define and drive frontend development standards across React and React Native applications.
• Establish code review processes, architectural patterns, and shared quality guidelines.
• Mentor frontend developers and promote engineering best practices across the team.
• Lead React migration efforts and ensure robust, incremental testing strategies.
• Maintain test coverage targets (80%+), balance unit/integration/e2e tests.
• Develop and maintain a shared component library and design system (Storybook).
• Optimize monorepo architecture and build pipelines; enable micro-frontend patterns.

Connaissances

React

React Native

Frontend testing

Monorepo architectures

Design systems

Storybook

UX mindset

CI/CD

Accessibility

Mentoring

Outils

Nx

Lerna

Yarn Workspaces

Module Federation

Description du poste

Pixid is entering an ambitious transformation phase and is looking for the next builders of this change!

The platform is highly configurable and used by multiple international stakeholders, making the challenge particularly stimulating.

PIXID manages more than 222,000 companies connected to over 12,000 temporary work agencies. Each month, they exchange more than 2.5 million documents, representing a purchasing volume estimated at nearly €11 billion!

We are looking for a Senior Frontend Developer to maintain technical excellence across the frontend stack.

The challenge is twofold: migrate existing Angular and mobile applications to robust React and React Native solutions, while establishing scalable frontend standards and best practices across the entire product ecosystem.

You will join an Agile Scrum squad building the next generation of microservices and modern frontend applications at the heart of a fast-evolving SaaS platform.

Your mission

As a Frontend Developer, you will act as both a key technical contributor and the frontend reference within the team.

You will actively contribute to development while defining the standards, architectural patterns, and engineering best practices that will shape the frontend ecosystem for the long term.

You will work closely with:

• Product Owners to translate business requirements into high-quality user experiences.

• Backend Developers to design clear, efficient, and maintainable API contracts.

• Product and Design teams to challenge and continuously improve the user experience (UX).

Your Key Responsibilities:

1. Technical Leadership & Frontend Practice Development

• Define and drive frontend development standards across React and React Native applications.

• Establish code review processes, architectural patterns, and shared quality guidelines.

• Mentor frontend developers and promote engineering best practices across the team.

2. React / React Native Modernization

• Lead React version upgrades across the application portfolio.

• Ensure smooth migrations through robust, incremental testing strategies.

• Reduce technical debt while maintaining product stability and continuity.

3. Quality, Testing & Frontend Engineering Excellence

• Establish and maintain a test coverage target of at least 80%.

• Build and maintain a balanced testing strategy (unit, integration, and end-to-end tests).

• Promote Test-Driven Development (TDD) and Behavior-Driven Development (BDD) where appropriate.

• Ensure the performance, reliability, and maintainability of frontend applications.

4. UX, Design System & User Experience

• Work closely with Product teams to challenge and improve UX decisions.

• Ensure accessibility, performance, and visual consistency across applications.

• Build and maintain a shared component library and design system.

• Use Storybook as the foundation for component development and documentation.

5. Frontend Architecture & Monorepo

• Optimize the monorepo architecture supporting multiple React and React Native applications.

• Build and maintain shared libraries along with efficient, scalable build pipelines.

• Implement micro-frontend patterns to support progressive migrations using the Strangler Fig approach.

You have 6+ years of frontend development experience, including at least 4 years working with React and React Native.You have successfully led React migration projects within complex or enterprise environments.You have strong expertise in frontend testing strategies (Jest, Playwright) and test coverage best practices.You have hands-on experience with multi-application/monorepo architectures (Nx, Lerna, Yarn Workspaces).You are experienced in designing and maintaining design systems and reusable component libraries.You use Storybook as a central tool for component development, documentation, and quality assurance.You have a strong UX mindset and are comfortable challenging product decisions to improve the user experience.You are proficient with React state management patterns (React Context, etc.).Nice to HaveExperience with micro-frontend architectures (Module Federation, Single-SPA).Knowledge of accessibility standards (WCAG 2.1 AA).Expertise in frontend performance optimization (Core Web Vitals, bundle optimization).Experience with frontend CI/CD pipelines.Comfortable collaborating with backend engineers in a cross-functional, product-oriented team.