Senior Frontend Engineer

Who we are

At Fluxon, we believe that how you build matters as much as what you build. We help businesses navigate their most important technology decisions with confidence, and take responsibility for seeing them through. Founded by ex-Googlers and startup veterans, we’re proud to partner with teams behind some of the most ambitious products, including Google, OpenAI, Anthropic, Walmart and Stripe.

Our work spans strategy, design, and engineering — often in complex, AI-driven environments — where clarity, speed and quality are the standard. We use AI intentionally, applying it only where it adds real value and expands what’s possible. Care shapes everything we do.

Inside Fluxon, you’ll find a global, remote-first team of experienced builders, who are curious, kind and serious about their craft. We’re building a place where people can take ownership, solve problems that matter and do work they’re proud to stand behind. If you want to do your best work alongside people who care as much as you do, you’ll feel at home here.

Note: This position is fully remote and open to candidates based anywhere in Poland.

About the role

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

Qualifications

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

What we offer

Remote-first, flexible work with a budget to set up a work space that works for you

Localized healthcare coverage to support you and your family’s wellbeing

Flexible paid time off with a minimum of 3 weeks per year (plus holidays)

"No internal meetings" Fridays, so you can focus on deep, uninterrupted work

A professional growth budget for learning that matters to you – whether it’s developing your technical skills or learning a new language

A monthly wellness allowance to support your physical and mental health

Annual company offsites, where we gather in person to build meaningful connections

A competitive salary that reflects your expertise, impact and experience

Profit-sharing, so you can benefit directly from the value we build together

A paid sabbatical program, designed for rest, renewal and fresh perspective