Senior Frontend Engineer

We’re looking for a Front-End Engineer to help us craft seamless, high-performing experiences across our ecommerce platforms. Based in our office in either Valencia or Rotterdam, you’ll own features end-to-end, collaborate closely with designers and backend engineers, and bring our ambitious product vision to life.

As a Front-End Engineer, you’ll be responsible for turning designs and ideas into fast, intuitive, and pixel-perfect experiences. From checkout flows to dashboards, your work directly impacts thousands of customers every day. At HelloPrint, front-end isn’t just about code: it’s about performance, usability, and building with scale in mind.

What You’ll Do:

• Own the Frontend: Take full technical and architectural ownership of the frontend codebase.

• Mentor and Lead: Support and grow other frontend developers through mentoring, code reviews, and knowledge sharing.

• Drive Modernization: Migrate our legacy jQuery-based applications to modern frameworks (Vue.js or React) with zero customer disruption.

• Architect for Scale: Design scalable, resilient, and performance-optimized systems that serve millions of users.

• Cross-Functional Collaboration: Work closely with designers, product managers, and business stakeholders to bring features from idea to launch.

• Champion Best Practices: Promote clean code, testing, documentation, and modern tooling across the team.

What We’re Looking For:

• 5+ years of experience building and scaling production-level frontend systems.

• Deep expertise in HTML, CSS, and vanilla JavaScript, with proven ability to build maintainable and performant applications.

• Strong experience with jQuery and at least one modern framework like Vue.js or React.

• Proven technical leadership experience: mentoring developers, leading code reviews, and influencing engineering standards.

• A pragmatic mindset: You know when to innovate and when to optimize existing solutions.

• A strong sense of ownership and initiative — you don’t just identify problems, you solve them.

• AI-Accelerated Development: You are knowledgeable about and in favor of using AI to accelerate the software development lifecycle.

• You're keen on exploring how AI can be leveraged to generate code, improve quality, and maximize output.

• Excellent communication skills, able to engage both technical and non-technical stakeholders in clear and effective ways.

• Bonus: Experience with content platforms (e.g. Contentful), multi-brand architecture, and frontend testing frameworks.

What We Offer:

• 🚀 Growth & Ownership: A performance culture where you grow fast, take ownership early, and design your own path: with access to AI learning and real responsibility.

• 🌍 International Experience: Join a diverse team of 150+ HelloPrinters from 34+ nationalities, collaborating across countries, cultures, and functions.

• 💡 Impact & Innovation: Work in a fast-paced, tech-driven scale-up where your ideas shape the future of customised products.

• 🤝 Collaboration: Learn from experienced leaders, contribute to meaningful projects, and thrive in a team that’s serious about performance and people.

• 🎉 Celebrations & Culture: From work anniversaries and team events to monthly Keynotes and seasonal awards, we make time to celebrate wins and give back through volunteering.

• 💪 Wellbeing & Perks:

  • In Rotterdam: Free breakfast & lunch, HelloFit gym, Urban Sports Club discounts.

  • In Valencia: Free breakfast & lunch, Spanish classes, Urban Sports Club discounts and bi-weekly bootcamps.

• 💰 Competitive Rewards: We reward impact, not hours, a performance-first approach to compensation and benefits.

Are You Ready to Build the Future? This isn’t a job for just anyone. We need bold thinkers, fast executors, and AI-first problem solvers. If that sounds like you, apply now!