Lead UI / Frontend Engineer (React)

Lisbon, Portugal

Specialist (5+ Years)

Hybrid

English Required Not Accepting Candidates Living Abroad

Robotics software company developing platforms for autonomous mobile robots. The team builds the frontend for a robotics software platform that lets fleets of autonomous mobile robots navigate and operate in complex real-world environments, from airports to large warehouses. The role focuses on translating architectural concepts into production-ready React applications for complex operational workflows.

What you will do

Develop modern React applications following architectural guidelines
Build complex workflows for fleet management, deployment, monitoring and intralogistics
Develop reusable UI components and contribute to a shared design system
Improve software quality through automated testing, code reviews and refactoring
Integrate frontend applications with backend APIs
Optimise frontend performance and usability
Mentor junior developers and lead by example through hands-on coding

Location and work model

Hybrid (3 days/week in the office, Lisboa)

React — strong, production-grade experience
TypeScript — strong experience
Modern JavaScript, HTML5, CSS3
Responsive and adaptive UI development
Component-driven development
REST APIs and asynchronous data handling
Frontend state management
Experience building dashboards, KPI visualisations and analytics/monitoring interfaces
Clean code, refactoring and maintainability practices
Automated testing (unit, integration, end-to-end)
English B2

Nice to have

Experience with robotics, industrial software, logistics, warehouse automation, manufacturing or IoT platforms
Design systems, component libraries, Storybook
Accessibility (WCAG) and Figma collaboration
React Query, Redux Toolkit, Zustand, TanStack
Playwright, Cypress, Jest, Vitest, Testing Library
Cloud-native applications and Kubernetes

We connect IT professionals with projects that match their skills, professional experience, and goals, then we offer a career progression program, delivered by in-house specialists - our People Experience Partners - to guide them through our journey with us.

What we offer:

A project that matches your skills and ambitions, as well as your preferences for working policies and culture.
A competitive salary with awesome benefits and opportunities to leverage your knowledge and network to earn additional income.
An empowering and respectful work culture enriched with social and learning events.
A People Experience Partner specially assigned to you - your go-to career guide, responsible for supporting your growth, facilitating training, and ensuring your work-life balance at KWAN.

At KWAN, they make sure that I feel comfortable with the client I’m working for and that what I’m doing aligns with my career aspirations.

Luis Caldeira, DevOps @ KWAN

At KWAN, I’m given the space to be myself and do what I love. I have control over the projects I work on, as well as the direction of my career.

Pedro Fonseca, Front End Developer @ KWAN

I see my People Experience Partner as someone who is always available to provide me with motivation and constant feedback, which helps me be sure that I am in the right place.

Josimar dos Reis, Software Developer @ KWAN

I know that I’ve contributed to the growth of a company that truly values a “people first culture”, because my ideas, experiences, and individuality were always appreciated.

João Nascimento, Software Developer (KWAN Alumni)

My two years at KWAN were an incredible experience! From the start, I was welcomed into a warm and collaborative environment where I felt truly supported.

Laís Ortiz, Software Developer @ (KWAN Alumni)

Grab this opportunity, apply now!