Senior Frontend Engineer – AI SaaS

Landbot

Senior Frontend Engineer crafting user experiences for AI SaaS platform at Landbot. Collaborating with design and product teams to shape the platform.

Posted 6/15/2026full-timeRemote • 🇪🇸 SpainSenior💰 €60,000 - €75,000 per yearWebsite

Tech Stack

Tools & technologies

ReactReduxTypeScript

About the role

Key responsibilities & impact

As a Senior Frontend Engineer at Landbot, you’ll play a key role in shaping how users interact with our product.
Write clean, maintainable, and testable code, with simplicity and quality as guiding principles.
Collaborate closely with Product and Design teams to deliver exceptional user experiences.
Act as a go-to expert in testing, driving a quality-first mindset across the frontend.
Build reusable UI components and design systems adaptable to different contexts: web apps, browser extensions, desktop, and mobile applications.
Provide technical leadership in design discussions and decisions that impact multiple teams or the company as a whole.
Make thoughtful trade-offs between short-term delivery needs and long-term technical health.
Document your work rigorously (ADRs, RFCs, postmortems) and share learnings across the org.
Stay ahead of industry best practices and bring fresh, practical ideas into the team.
Lead by example: mentor teammates, give constructive feedback, and raise the engineering bar.

Requirements

What you’ll need

Strong expertise in TypeScript, React, Redux, and modern frontend ecosystems
Deep experience with testing at all levels : unit, integration, functional, and E2E.
Experience building and maintaining complex UIs with reusable components and/or micro-frontends.
Strong software engineering fundamentals and ability to simplify complex problems.
Experience shipping to production frequently (we deploy multiple times per day).
Familiarity with performance optimization and scaling frontend applications.
Passion for feedback, learning, and mentoring others to raise engineering standards.
Strong collaboration mindset, you value product, design, and cross-team partnerships.
(Bonus) Exposure to AI-driven interfaces or curiosity about designing UX for AI-powered features.
Fluent in English and Spanish.
We require eligibility to work in Spain and are also open to collaboration agreements.

Benefits

Comp & perks

Hybrid work model: flexibility to work remotely, from our Barcelona office 🏙️, or a combination of both.
Collaborative work environment.
Flexible working hours.
Paid time off and flexible holidays: 26 paid days per year (23 regular days + December 24th & 31st) 🎉, plus one additional day off on your birthday.
Annual budget for training and professional development 📚.
Transportation ticket 🚋.
English and Spanish lessons 🇬🇧 🇪🇸.
Flexible compensation plan through Cobee.
Team-building activities.
Referral program with bonuses for bringing in talented professionals.

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Hard Skills & Tools

TypeScriptReactReduxunit testingintegration testingfunctional testingE2E testingperformance optimizationmicro-frontendssoftware engineering fundamentals

Soft Skills

collaborationmentoringfeedbackproblem simplificationleadershipcommunicationquality-first mindsetadaptabilitylearningconstructive feedback