Frontend Developer (REACT) Medior / Senior

This role is built around an AI-first development philosophy. You don’t just implement interfaces for AI features, you actively think in terms of how AI changes the way products are designed, built, and used. You leverage AI to increase both development speed and product quality.

Velocity is key in this role. You combine deep frontend expertise with a pragmatic, unblocking mindset. You are not limited by domain boundaries and are comfortable making targeted adjustments in backend systems or microservices to ensure continuous progress and full delivery of features.

Responsibilities

• AI-First Frontend Engineering
  Design and build interfaces with an AI-first mindset, ensuring AI-driven features are usable, understandable, and valuable to end users
• React Architecture Ownership
  Take a leading role in shaping and evolving the React and TypeScript codebase, focusing on scalability, maintainability, and performance
• UI for AI-Driven Features
  Implement complex UI logic that supports AI functionalities such as dynamic content, automation, and intelligent workflows
• Unblocking & Full-Cycle Delivery
  Independently unblock frontend progress by building or modifying API endpoints in Symfony or microservices in Python when needed
• Code Quality & Reusability
  Safeguard performance, maintainability, and reusability of components, contributing to a strong and consistent design system
• AI Tooling & Productivity
  Actively leverage AI coding tools (such as Cursor, Copilot, or similar) to increase development speed and improve output quality
• Knowledge Sharing & Collaboration
  Contribute to documentation, perform code reviews, and help elevate the team’s frontend and AI capabilities
• Epic Ownership (when applicable)
  Take ownership of Epics by maintaining overview, preparing tickets, and ensuring steady progress through strong communication and planning

Required Experience / Skills

• AI Mindset (Core Requirement)
  You embrace AI as a fundamental shift in software development and actively apply it in your daily workflow
• Frontend Expertise
  At least 3 years of experience with React and modern JavaScript/TypeScript ecosystems
• Strong API Integration Skills
  Experience working with and structuring complex APIs and data flows
• Unblocking Mentality
  Comfortable stepping outside of frontend boundaries to ensure delivery of complete features
• Code Quality
  Experience writing clean, maintainable, and well-documented code

Preferred Qualifications

• Backend Affinity
  Basic knowledge of PHP (Symfony) to read and modify backend logic when needed
• AI & Python Exposure
  Affinity with or experience in Python, especially in the context of AI integrations
• AI-Assisted Development
  Experience working in an AI-supported development workflow
• Architecture & Systems
  Experience working with microservices and distributed systems
• DevOps & Tooling
  Knowledge of CI/CD pipelines, Docker, and containerized environments
• Design Systems
  Experience contributing to component libraries and scalable design systems
• Testing
  Familiarity with testing frameworks and building reliable frontend applications
• Epic Management & Leadership
  Ability to lead larger initiatives, including maintaining overview, communication, ticket preparation, brainstorming, and time management

Your new home base

You’ll work from our beautiful office at Kop van Zuid in Rotterdam, with the flexibility to work remotely part of the week. You’ll join an international and friendly development team with strong processes, a stable OTAP environment and a mature codebase.

What we offer

• Competitive salary based on your seniority.
• Unlimited paid time off.
• Flexible working hours and hybrid work options.
• Budget for tools, learning, courses or tech events.
• A collaborative international team that loves building, improving and shipping.

Our hiring process

Our process consists of two conversations, designed to give both sides clarity and confidence. During both sessions, you will speak directly with your future day-to-day colleagues from Product and the Development team.

1. Culture & personal fit
   In the first conversation, we explore whether there is a natural match in personality, communication style and ways of working. You’ll learn more about our vision, culture and team – and we’re curious to hear what motivates you.
2. Technical depth & problem-solving
   The second conversation focuses on your technical experience, reasoning and approach. No trick questions – just an honest, in-depth discussion about architecture, problem-solving, engineering challenges and how you build scalable systems.

For questions or more information, feel free to contact Zeno via WhatsApp or email at product@mrwork.nl

We look forward to hearing from you – and who knows, you might become the newest addition to our MrWork team!