Born in San Sebastián, Spain, Gasca's journey into design began with his education in architecture, which laid the foundation for his approach to industrial and furniture design.

His career took off when he founded STUA, his own design company, in 1983. The company quickly became known for creating high-quality, modern furniture that combined simplicity, functionality, and elegance. STUA allowed Gasca to fully explore his vision of creating designs that were not only aesthetically appealing but also functional and durable. His work often reflects a deep understanding of materials, focusing on creating long-lasting pieces that were timeless in style.

One of his early and most famous works was the STUA Lagu Chair, which exemplifies his design philosophy of simplicity and ergonomic comfort. Gasca’s work with STUA helped him gain recognition both in Spain and internationally, positioning him as one of the leading figures in contemporary Spanish industrial design.

Throughout his career, Jesús Gasca has collaborated with various brands, but it is his work with STUA that has defined his legacy. His designs often feature clean lines, minimalist forms, and a deep focus on the user experience. His furniture designs are known for their versatility, and many of his pieces have become iconic in modern interior design.

Gasca's approach to design has always been centered on creating furniture that serves its purpose while also being aesthetically pleasing. His commitment to quality craftsmanship and attention to detail has earned him a respected place in the world of industrial design.