AGENCY LIST

Xtremis

Barcelona, Catalonia, Spain
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Bespoke applications, cloud architecture, and generative AI secured through to production

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.

25
YEARS IN BUSINESS
3
SERVICES

Capabilities

Category

Custom Software Development

Services

What these services involve

Application Development
Application Development for custom software development buyers. Clear scope, measurable outcomes, and reliable delivery.

Agency details

Team size
51-200 people
Founded
2001 (25 years)

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Xtremis is listed on Agency List as part of our global directory of professional agencies. Profiles are compiled using a combination of agency-submitted information, publicly available data, and Agency List classification systems.

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Local context

Xtremis operates in Barcelona, Catalonia, Spain serving clients locally and beyond. Agency List organizes firms by geography to help buyers understand the distribution of agencies across regions and markets.

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Data notes

Profile information is derived from agency submissions and public sources. Some attributes may be estimated and are updated over time as additional data becomes available.