apeirum is recruiting on behalf of maxon for a Senior Salesforce Frontend Engineer in Barcelona. This is a permanent position employed directly by maxon; apeirum runs the selection process. maxon is a integral provider of world-class precision drive systems. Its drives are used wherever extreme precision and the highest quality standards matter – on Earth, and on Mars. maxon offers creative minds and passionate doers a global yet trusted environment, where people who question what is possible and challenge themselves can grow. As Senior Salesforce Frontend Engineer you design and build modern, scalable and user-friendly frontends in maxon's Salesforce ecosystem. You shape the user experience of maxon's global Sales and Marketing platforms, with a strong focus on performance, usability and business value, and you work closely with backend developers, architects and business stakeholders in Barcelona and Switzerland. Hybrid in Barcelona (3 days office, 2 remote). Tasks
• Develop and maintain frontend components and interfaces in Salesforce, mainly with Lightning Web Components (and Aura where needed).
• Build and customise user interfaces across Experience Cloud, Commerce Cloud storefronts, Lightning App Builder and screen flows.
• Connect frontend components to Apex services and external APIs, with a clean separation between UI and business logic.
• Turn business requirements into intuitive, high-quality UI/UX within the platform's capabilities.
• Make applications fast, responsive and cross-browser compatible.
• Contribute to design systems and reusable components for consistency across applications.
• Take part in code reviews, testing and deployments, and keep improving existing frontend solutions.
• Use AI coding assistants responsibly to speed up development,



reviewing every output for correctness, security and maintainability. Requirements – must have
• 5+ years of frontend development, with substantial hands-on work in Salesforce.
• Senior-level experience with Lightning Web Components (or Aura / similar component frameworks).
• Strong Salesforce Commerce Cloud experience.
• Strong frontend fundamentals: JavaScript (ES6+), HTML5, CSS3 and a component-based mindset.
• Experience integrating frontends with Apex and external APIs.
• A structured, reliable and quality-driven way of working, with ownership of your deliverables.
• Enjoy working in cross-functional, international teams.
• Fluent English.
• Based in Spain (Barcelona). Nice to have
• Experience Cloud, screen flows and Lightning App Builder.
• Design-system work and reusable component libraries.
• Jest or other JavaScript testing frameworks; CI/CD for Salesforce.
• Salesforce certifications (e.g. JavaScript Developer I, Platform Developer I, B2C/B2B Commerce Developer).
• Spanish or German. What maxon offers
• A permanent employment contract directly with maxon, competitive compensation, and flexible

working hours
.
• A key role in global Salesforce solutions for Sales and Marketing.
• A dynamic and friendly workplace in maxon's Barcelona tech hub, combining startup energy with the stability of a Swiss industrial leader.
• International collaboration with teams in Switzerland and worldwide.
• Continuous learning and growth through the maxon academy.
• Additional benefits such as Club Natació de Barcelona membership and the Cobee program. Interested? Apply with your CV. apeirum reviews every application personally and will get back to you; shortlisted candidates then interview with the maxon team, and the offer and contract come from maxon.

📌 Senior Salesforce Frontend Engineer (Barcelona)
🏢 Apeirum
📍 Barcelona