Front-end Engineer

Spin.

AI is a global SaaS cybersecurity company that protects mission-critical data across Google Workspace, Microsoft 365, Salesforce and Slack. Our product – Spin One unifies SSPM, ransomware protection, DLP, backup & recovery in one platform trusted by enterprise customers worldwide.

As our platform continues to grow, we are expanding our front-end engineering team and looking for a Middle Front-End Developer with strong React experience
. We are looking for someone who can take ownership of complex UI features, build scalable and maintainable front-end architecture, and work closely with backend, QA, Dev Ops, and Product teams to deliver high-quality product experiences.

This role is ideal for an engineer who is comfortable working with complex SaaS products, data-heavy interfaces, integrations, dashboards, permissions, access control, asynchronous workflows, and enterprise-level user scenarios.

You will become part of a strong engineering team working on a cybersecurity SaaS platform used by enterprise customers worldwide.

This role is based in our Lisbon office in a hybrid format. If you are not currently in Portugal, we are open to remote work during the trial period, with relocation to Lisbon afterward.

• complex web application interfaces
• dashboards and data-heavy views
• security, backup, recovery, and DLP-related flows
• integrations with Google Workspace, Microsoft 365, Salesforce, Slack
• access control, permissions, audit logs, and admin workflows
• UI for asynchronous backend processes, jobs, notifications, and system statuses
• scalable front-end components used across the product

• React
• Type Script / Java Script
• Redux / state management tools
• REST APIs
• HTML5, CSS3, SCSS / modern styling approaches
• Browser Dev Tools
• Git / Bitbucket
• Jira
• Confluence
• CI/CD pipelines

• Develop and maintain complex front-end features using React.
• Build scalable, reusable, and maintainable UI components.
• Work closely with Product Managers, UX/UI designers, backend developers, QA engineers, and Dev Ops.
• Participate in technical discussions, solution design, and feature planning.
• Integrate front-end functionality with REST APIs and backend services.
• Work with complex data structures, permissions, roles, statuses, and asynchronous workflows.
• Ensure high performance, responsiveness, and stability of the web application.
• Analyze requirements, clarify edge cases, and proactively identify risks or gaps.
• Participate in code reviews and contribute to front-end best practices.
• Improve existing front-end architecture, performance, and code quality.
• Debug UI issues using Browser Dev Tools and logs.
• Collaborate with QA to support testing, bug fixing, and release stability.
• Work with documentation and keep technical information up to date when needed.

• 3+ years of commercial front-end development experience.
• Strong hands-on experience with React.
• Strong knowledge of JavaScript and Type Script.
  
  Solid understanding of HTML5, CSS3, responsive design, and cross-browser compatibility.
• Experience with state management tools such as Redux or similar.
• Experience integrating front-end applications with REST APIs.
• Good understanding of web application architecture and component-based development.
• Ability to work with complex product logic, data-heavy interfaces, and enterprise-level workflows.
• Experience with debugging, performance optimization, and browser Dev Tools.
• Understanding of Git flow and modern development practices.
• Ability to write clean, maintainable, and well-structured code.
• Critical thinking, ownership, and ability to challenge requirements when needed.
• Good communication skills and ability to work in a cross-functional team.
• English:
  Intermediate+.

• Help us build a stable, scalable, and user-friendly cybersecurity SaaS platform.
• Improve the quality and maintainability of our front-end codebase.
• Contribute to better user experience for enterprise customers.
• Support faster and more predictable feature delivery.
• Help evolve front-end standards, practices, and architecture within the team.

• Work in a fast-moving, high-impact cybersecurity company recognized by Gartner, Forrester, and G2
  .
• Work on a real product with real users and visible business impact
• Work on an interesting and large-scale product
• Solve complex, non-trivial security and engineering challenges
• Opportunity to influence technical and product decisions
• Trust from management and autonomy in day-to-day work
• Strong, professional team with deep expertise

• Annual performance-based salary review
• Annual performance-based bonus
• Referral bonuses
• Educational budget
• Sport & hobby compensation
• Medical insurance compensation
• Company presents (birthdays, anniversaries, weddings, etc.)
• Corporate travel parties twice a year