React developer for medical applications

Would you be interested in leading the development from scratch of an innovative platform in the medical sector? Oxigent Technologies is recruiting a Frontend Developer (Mid-Senior) to join a team of 5 technical professionals in Barcelona. If selected, your main mission will be to develop new features from scratch for a medical application, actively participate in technical decision-making, ensure code quality, and work directly with the project's different teams.

• Develop products and new features from scratch for a desktop/web application in the medical field.
• Carry out occasional maintenance and evolutionary improvements to the team's code.
• Work with a high degree of autonomy, coordinating smoothly and directly with the UX/UI teams, Product Managers, and the end client.
• Actively join a technical team of 5 people (a role focused on hands-on development, with no tutoring or people management tasks).

• A degree in Computer Engineering, an Advanced Vocational Training qualification in Web Application Development, or equivalent demonstrable experience.
• At least 5 years of actual experience in Front-End development (Mid-Senior profile).
• React 18+ (essential): advanced proficiency in Hooks, functional components, Context, and custom hooks.
• Coverage of most of the following technical stack:
• TypeScript: strict typing (interfaces, generics, avoiding the use of any).
• Electron: packaging and developing desktop apps.
• Redux Toolkit: global state management (slices, thunks, selectors).
• REST API consumption: working with Axios (domain services, interceptors).
• MUI v5 (Material UI): theming, the sx prop, and components styled with styled.
• React Router v6: routes and lazy loading.
• SignalR: consuming real-time events and synchronizing with Redux.
• Testing: Jest + React Testing Library and HTTP simulation with MSW.
• i18n & Git: multilingual translations and Git workflow.
• Languages: fluent or native Spanish/Catalan (daily communication) and technical English (documentation).
• Soft skills: a high degree of autonomy, proactivity, organization, and ease of communication across departments.
• Будет плюсом: Previous experience in the medical / HealthTech sector

• Permanent employment through Oxigent on a technologically attractive project with a purpose.
• Competitive salary range: between €40,000 and €42,000 gross per year.
• Balanced hybrid model: 2 days in the office (Poblenou / La Maquinista) and 3 days working remotely.
• Great flexibility in working hours: an 8-hour workday with an ultra-flexible start time (from 07:00 to 10:00) and finish time (from 16:00 to 19:00).
• Training allowance, private medical insurance, and a flexible benefits system (restaurant, transport, and childcare cards).
• Access to gyms and sports activities with exclusive discounts throughout Spain.