Senior Full Stack JavaScript Engineer - Global Remote | SaaS

Passion.io; Barcelona; A distancia; EUR 60.000 - 90.000; Jornada completa

Descripción de la vacante

A technology company in Barcelona seeks a Senior Full Stack JavaScript Engineer to build impactful mobile apps and explore AI. The ideal candidate has over 5 years of JavaScript experience and a product mindset. Enjoy a remote-first culture with opportunities for career growth and work-life balance, including 24 paid vacation days and global team gatherings.

Servicios

24 paid vacation days

10 Celebration Leave days

Tech Gear Budget

Creative Freedom

Paid Parental Leave

Formación

• 5+ years in JavaScript development including React, TypeScript, and Node.js.
• Proven full stack development experience.
• Exposure to AI-powered tools, APIs, or projects.

Responsabilidades

• Build and maintain scalable web and mobile applications.
• Implement AI-driven features using APIs.
• Optimize backend services and contribute to intuitive User Interfaces.

Conocimientos

JavaScript development

React

Node.js

GraphQL

TypeScript

Herramientas

AWS

React Native

Descripción del empleo

Overview

Build the Future - Power Full Stack Experiences (and explore AI along the way!)

Do you….. dream in code, speak fluent JavaScript, and tinker with AI projects just for fun? At Passion.io, we empower creators to launch impactful mobile apps that change lives. We’re on a mission to build game-changing experiences, and we need a Senior Full Stack JavaScript Engineer who can thrive across the stack while exploring the next generation of tech, including AI-driven features.

We’re looking for a world-class engineer who’s equally comfortable in the frontend and backend, with a product mindset that goes beyond code. If you’re excited about designing beautiful, high-performing applications and shaping scalable, resilient backends, all while having the opportunity to get hands-on with AI-powered development - this is your moment!

What You Can Expect

Imagine joining a team where your skills shape both the look and the logic of cutting-edge applications. You’ll…

• Full Stack Ownership: Build and maintain scalable web and mobile apps with React, React Native, Node.js, and GraphQL.
• Create end-to-end solutions from designing and optimizing backend services, APIs, and microservices to contributing to the craft of intuitive, pixel-perfect User Interfaces that perform beautifully on Web, iOS, and Android.
• AI-Powered Features (Optional, but exciting!): Collaborate on the design and implementation of AI-driven features using APIs like OpenAI or Gemini.
• Infrastructure Impact: Work with AWS to keep our systems secure, scalable, and lightning-fast.
• Code Quality & Performance: Improve and keep our codebase clean, efficient, and easy to build on.
• Mentorship & Innovation: Share your expertise, guide junior engineers, and bring your freshest ideas to the table.

Requirements

What We’re Looking For

Must-Have Experience :

• 5+ years in JavaScript development (React, TypeScript, Node.js, and React Native expertise)
• Proven experience in full stack development - building both frontend and backend systems
• Some exposure to AI-powered tools, APIs, or projects (commercial or personal)
• GraphQL proficiency
• Solid understanding of microservices architecture
• Product Mindset: you think about the why behind the code

Bonus Points (bring these and we’ll be extra hyped!)

• Experience building AI models or advanced AI features
• Strong AWS and infrastructure skills
• Experience with basic DevOps (CI / CD, monitoring, or deployment pipelines)
• A sharp design intuition with an eye for UX / UI polish

Benefits

The Passion.io Experience: What We Do & How We Work

At Passion.io, we’re on a mission to empower creators to build and monetize their own mobile apps - without coding. Our platform lets 15,000+ creators launch their own mobile apps and teach their passion - no code, no hassle, just impact. Over 200,000 users (and counting!) are learning through the apps they’ve built. You’ll be working inside a fast-moving, fully remote team that’s passionate about creator economy, product-led growth, and helping people succeed.

Here’s what makes working with us, well... kinda awesome

• Remote-First - Work from anywhere in the world!
• Global Gatherings - We meet in epic locations (think: Croatia, Portugal, Greece).
• Career Growth - We invest in YOU with coaching, training, and conferences.
• Creative Freedom - Your ideas shape the product. Your code powers the experience.
• Tech Gear Budget - Get the setup you need to create at your best.
• Time Off That Counts - 24 paid vacation days + 10 "Celebration Leave" days for holidays that actually matter to you.
• Paid Parental Leave - Because family first, always.

Hiring Journey

What your hiring journey looks like

We’re excited to share the path you'll take as you explore this opportunity with us. We respect your time and skills, so our process is streamlined and engaging - Here’s what your adventure will look like:

• Initial Discovery: A quick discovery call with Monique, our Sr. Talent Manager, to align expectations.
• Showcase Your Skills: A live coding challenge where you'll demonstrate your expertise and problem-solving skills in a practical setting.
• Deep Dive: A technical discussion with our Principal Engineer, Darko, where you'll explore AI implementations and architectural decisions.
• Vision Alignment: A final conversation with our Head of Engineering, Nuno, to ensure that your vision and our mission align perfectly.

Ready to build the future (and your future) with us?

Whether you’re AI-experienced or AI-curious, if you’ve got full stack firepower and a product-focused mind, we want to hear from you!

Hit APPLY and let’s shape what’s next together!

Privacy Notice :

Here’s a link to our privacy policy. In this policy, you will find information about our compliance with GDPR (data protection law). You can find how to send us a request to let you access your data that we have collected, request us to delete your data, correct any inaccuracies or restrict our processing of your data. All questions, comments and requests regarding this Privacy Notice should be addressed to [e-mail]