Mid / Senior Fullstack Engineer (Java, Kotlin, VueJS)

Mid / Senior Fullstack Engineer (Java, Kotlin, VueJS) Aplicar Want to work on critical systems that serve millions of users every day? At Q-Tech, we're hiring for a leading European retail tech group, a major player in e-commerce, cloud, cybersecurity, and data, with its own hub in Barcelona. You'll join a team managing real-time stock availability for a large-scale e-commerce platform. What you'll find: - Modern stack: Java (Spring Boot) + Kotlin (Ktor), active migration in progress - Vue.js frontend - Cloud-native environment: GCP, Docker, Kubernetes - Small team (6 people) with a real voice in technical decisions - International exposure, direct collaboration with teams in Germany - Hybrid model, approx. 8 office days/month (Pl. Catalunya area) What we're looking for : Technical - 4+ years of experience as a Backend/FullStack Engineer - Solid hands-on experience with Java and Spring Boot - Kotlin experience (or strong interest and ability to ramp up quickly, since the team is migrating) - Comfortable with frontend work in Vue.js / TypeScript (secondary focus, approx. 30% of the role) - Experience with relational databases, ideally PostgreSQL - Working knowledge of Docker and Kubernetes, and comfort navigating production incidents - Familiarity with GCP or another major cloud provider - Experience writing unit, integration, and E2E tests; TDD is a plus, not a requirement - English level B2-C1 (daily communication with teams in Germany) Soft skills - Ownership mindset: comfortable owning a feature end-to-end, from design to production - Strong communication skills to work closely with product owners and cross-functional teams - Proactive attitude: willing to propose ideas and challenge technical decisions, not just execute tasks - Comfortable working in a small, close-knit team with direct visibility and responsibility - Adaptability to work across a partially legacy, partially modern stack during an active migration - Willingness to participate in an on-call rotation for a critical system Job conditions - Contract type: permanent, full-time - Work model: hybrid, approx. 8 office days/month (Pl. Catalunya area), flexible scheduling - On-call rotation: one week every 3-4 weeks for the team's critical system, compensated separately (standby pay plus a higher rate for any active intervention) - Benefits: flexible compensation (meal vouchers, transport), private health insurance, remote-work allowance, wellbeing budget, language classes, training and development support Departamento Fullstack Puesto Vue/Java Estado remoto Híbrido Acerca de Q-Tech En Q-tech , vivimos y respiramos tecnología. Somos ese equipo que conecta a las mejores mentes del mundo IT con empresas que están listas para comerse el mercado. Llevamos años cazando talento tech, y nos gusta hacerlo de la manera más artesanal posible; nos gusta el trato cercano, real y auténtico. Amamos lo que hacemos y creemos que el talento no se busca, ¡se atrae! 🚀 Nos movemos como pez en el agua en la comunidad IT, siempre al tanto de lo último en tecnología, startups, y los movimientos del sector. Si eres un crack en lo que haces o una empresa buscando uno, ¡hablamos el mismo idioma! Fundada en 2000 Compañeros 20 Facturación 2M