Mid-level Front-end Engineer (React)

About the role

Spin.AI is expanding its front‑end engineering team to enhance the SpinOne SaaS cybersecurity platform. As a Mid-level Front‑end Engineer you will own complex UI features, build scalable components, and collaborate closely with product, design, backend, QA and DevOps teams to deliver high‑quality experiences for enterprise customers.

Key responsibilities

• Develop and maintain complex front‑end features using React and TypeScript.
• Design reusable, maintainable UI components and ensure performance and responsiveness.
• Integrate front‑end functionality with REST APIs and backend services.
• Work on data‑heavy dashboards, security flows, access‑control interfaces, and asynchronous workflows.
• Participate in technical discussions, solution design, code reviews and front‑end best‑practice improvements.
• Debug UI issues with browser dev tools and collaborate with QA for testing and release stability.

Required profile

• 3+ years of commercial front‑end development experience.
• Strong hands‑on experience with React.
• Proficiency in JavaScript and TypeScript.
• Ability to work in a hybrid setting (Lisbon office) and collaborate across distributed teams.

Required skills

• React
• TypeScript / JavaScript
• Redux or similar state‑management tools
• REST APIs
• HTML5, CSS3, SCSS
• Browser DevTools
• Git / Bitbucket
• Jira, Confluence
• CI/CD pipelines