Senior Frontend Engineer

Who we are

We are Fluxon, a product development team founded by ex-Googlers and startup founders. We offer full-cycle software development: from ideation and design to build and go-to-market.

The role is open to candidates based in Portugal preferably in Lisbon.

As a Senior Frontend Engineer at Fluxon, you’ll create and deliver beautiful user experiences for our clients.

You’ll be responsible for building and iterating on software from design to launch by:

• Clarifying requirements and UI design in partnership with our Product and Design teams
• Collaborate closely with designers to ensure a high level of UX polish and interaction quality in everything you build
• Breaking down goals into achievable tasks and following sprint timelines effectively
• Proactively communicating progress and challenges in your work
• Learning fast and working independently and reliably
• Following best practices in frontend development, including efficient component architecture, responsive design patterns, state management best practices, comprehensive unit/integration testing, and optimizing for performance and accessibility
• Implement meaningful motion and microinteractions that enhance usability and delight

Technologies we frequently work with include:

• Frameworks
• Next.js, React, Angular, Vue.js
• Programming
• Typescript/JS, CSS
• Styling
• Tailwind CSS, Material UI, Chakra UI, Shadcn
• Design Tools
• Figma
• State Management
• Redux, Zustand, Jotai
• Mobile Development
• React Native/Expo, Progressive Web Apps (PWAs)
• Backend Integration
• REST APIs, GraphQL, WebSockets

• 6+ years of professional experience in frontend development
• Fluency in TypeScript/JavaScript, HTML, CSS, and modern web development practices
• Expertise with at least one modern frontend framework (React, Angular, or Next.js) with a passion for continuous learning
• Experience in building highly-performant and scalable web applications
• Strong understanding of responsive design and mobile-first approaches
• Strong sense of UX and interaction design
• Proactive, can-do attitude with a creative approach to problem solving
• Comfortable in a client-facing consulting role
• Experience with Design Systems and building accessible products is a plus

• Exposure to high-profile SV startups and enterprise companies

• Competitive salary

• Fully remote work with flexible hours

• Flexible paid time off

• Profit-sharing program

• Healthcare

• Parental leave, including adoption and fostering

• Gym membership and tuition reimbursement

• Hands-on career development