Xtremis

Xtremis, based in Barcelona, builds custom software, SEO-first web portals, and native or hybrid mobile apps for enterprise clients including Arval, Sabadell, GasNatural, and Vueling. The work spans application development through IT consulting, with technology decisions grounded in an analysis of each client's legacy infrastructure and corporate requirements before a line of code is written.

Delivery covers cloud architecture across AWS, Azure, and GCP alongside generative AI and cognitive agents built to redefine existing workflows. Security runs through the same pipeline rather than as an afterthought: penetration testing, WAF, and devsecops enablement sit alongside development, with production releases pushed via Kubernetes and AWS in an automated, secured process described as armored protection for critical infrastructure.

Xtremis cites a 72-hour turnaround from idea to working prototype, along with internal figures of 10x more code produced per engineer, zero team turnover, and zero inherited technical debt on projects it takes on.