Senior Frontend Engineer

This position is posted by Jobgether on behalf of a partner company. We are currently looking for a Senior Frontend Engineer in Spain. You will join a fast-growing product engineering environment focused on building scalable, high-performance frontend systems for modern SaaS infrastructure. In this role, you will take ownership of a complex frontend application used by high-profile companies and contribute directly to the evolution of a critical developer-facing product. You will work closely with Product and Backend Engineering teams to design, build, and ship robust features that combine usability, performance, and long-term maintainability. The environment is highly autonomous and requires strong ownership, proactive decision-making, and the ability to navigate ambiguity. You will also play a key role in shaping frontend architecture, improving observability, and maintaining design system consistency across the platform. This is a high-impact role for an experienced engineer who thrives in fast-paced, technically demanding, and collaborative product teams.