Senior JavaScript Engineer

hlpy, born in 2020, is roadside assistance company founded by visionaries who saw a gap in the market and redefined the industry with a cutting-edge digital solution.What started as a bold idea in Italy quickly expanded to France and Spain, and GermanyAs we continue to scale globally, our ambition and market demand propel us toward becoming a major force in the sector.Are you ready to be part of this journey?Role OverviewWe are looking for a Senior JavaScript Engineer to join our product engineering team and take a leading role in building scalable, high-quality frontend applications.You will work on core product features, contribute to frontend architecture and design system evolution, and collaborate closely with backend engineers and product teams.This is a hands-on senior role, combining strong technical execution with architectural thinking and mentorship.Key Responsibilities- Design, develop, and maintain modern frontend applications using JavaScript and TypeScript.- Lead and contribute to the adoption and evolution of frontend frameworks (e.g. Vue, React, Angular).- Design, implement, and maintain a Design System (components, tokens, guidelines) used across multiple products.- Build scalable, reusable, and accessible UI components.- Work closely with backend teams to design, consume, and evolve APIs (REST / GraphQL).- Translate product and UX requirements into robust technical solutions.- Ensure high code quality through reviews, testing, and best practices.- Optimize frontend performance, accessibility, and maintainability.- Mentor junior engineers and actively contribute to frontend standards and guidelines.Technical RequirementsMust Have- Strong experience with JavaScript (ES6+) and TypeScript.- Deep hands-on experience with modern frontend frameworks- (Vue but React or Angular are also valid).- Proven experience in Design System implementation, including:- Component libraries- Theming and design tokens- Documentation and usage guidelines- Solid experience working with APIs:- REST and/or GraphQL- API contracts and data modeling- Error handling and performance considerations- Strong understanding of frontend architecture and state management patterns.- Experience with modern build tools and tooling (Vite, Webpack, ESLint, etc.).- Familiarity with testing frameworks (Jest, Testing Library, Cypress, etc.).- Excellent knowledge of Git and collaborative development workflows.Nice to Have- Experience with monorepos and shared frontend libraries.- Exposure to micro-frontend architectures.- Experience with accessibility standards (WCAG).- Familiarity with CI/CD pipelines and frontend deployment workflows.- Basic understanding of backend technologies and cloud environments.Soft Skills- Strong problem-solving and analytical mindset.- Ability to work autonomously while collaborating effectively with cross-functional teams.- High attention to code quality, usability, and long-term maintainability.- Clear communication skills, both technical and non-technical.- Mentorship attitude and willingness to raise the overall frontend bar.Education & Experience- Degree in Computer Science, Engineering, or equivalent practical experience.- 5+ years of professional experience in frontend or JavaScript-focused roles.- Demonstrated experience working on production-grade, user-facing products.What We Offer- A product-driven engineering environment- Real ownership of frontend architecture and UI foundations.- Opportunity to influence technical direction and design standards.- Continuous learning and professional growth.- Flexible remote work and a strong engineering culture.- Company benefits.Send cv in English