# Xtremis Software S.L. — Custom Software Engineering & AI Agency

> Xtremis is a Barcelona-based software engineering firm with over 25 years of experience. We specialize in custom software development, AI integration, cybersecurity, web & mobile development, and IT consulting. We serve enterprises across Europe and MENA from our offices in Barcelona and Bilbao.

## About
25+ years designing and building mission-critical software for companies that refuse technical mediocrity.

- **25+ years** of software engineering experience
- Offices in **Barcelona** (HQ) and **Bilbao**
- Enterprise clients across **Europe and MENA**
- **AI-augmented development** using custom agents, RAG engines, and LLM orchestration
- Full-stack engineering: Angular, React, Vue, Django, Go, React Native, AWS
- GDPR/LOPDGDD compliant, DevSecOps practices

## Services
- [Custom Enterprise Software](https://xtremis.com/en/custom-software): Scalable, resilient and tested enterprise applications. Hexagonal architectures, DDD and microservices.
- [Web Development & Architecture](https://xtremis.com/en/web-development): We develop Next.js + Angular ecosystems for absolute UX/SEO assimilation in B2B lead acquisition.
- [Mobile Application Development iOS & Android](https://xtremis.com/en/mobile-apps): We develop native and hybrid ecosystems intensely focused on financial retention metrics for your B2B or B2C business.
- [Generative Artificial Intelligence](https://xtremis.com/en/artificial-intelligence): We deploy Autonomous LLM Agents directly anchored to your corporate databases to slash massive B2B workflows.
- [Cybersecurity & Corporate Protection](https://xtremis.com/en/cybersecurity): We mitigate commercial breaches through drastic infrastructure hardening and persistent attack surface analysis.
- [IT Consulting & Cloud Migration](https://xtremis.com/en/it-consulting): Move your data to robust ecosystems with people who know exactly how to do it. Stabilise, optimise and transform your IT infrastructure.

## Capabilities
- **Core Engineering**: Architecture and development of mission-critical cloud-native applications that scale to millions of global users with s — Cloud Architecture (AWS / Azure / GCP), Custom B2B Software, System Integrations & API-First
- **Digital Experience**: We design interaction flows based on neuroscience and analytical retention. B2B interfaces and mobile apps that convert, — iOS & Android: Native & Hybrid, High-Conversion Web UX/UI Portals, Technical SEO & Performance
- **Cognitive IT**: RAGs, intelligent agents and on-premise LLMs. We boost your company's efficiency by injecting AI on your corporate data  — GenAI & Private On-Premise LLMs, Intelligent Automation (RPA + AI), Data Engineering & RAG Pipelines
- **Cyber Resilience**: Military-grade shielding for IT infrastructures. Pentesting, end-to-end encryption and Zero-Trust governance for compani — Strategic Security & Zero Trust, Infrastructure Audits & Pentesting, DevSecOps & Supply Chain Security

More details: https://xtremis.com/en/capabilities

## Case Studies
- [Arval Car Sharing](https://xtremis.com/en/case-studies/arval) — Global B2B vehicle fleet transformation. Metrics: +45% Usage efficiency, 3M+ IoT trips, 100% AWS Uptime. Stack: Vue 3, Django, React Native, AWS, IoT, BLE, PostgreSQL
- [Bigle Legal](https://xtremis.com/en/case-studies/bigle-legal) — AI-powered document automation for the legal sector. Metrics: -70% Drafting time, 50K+ Documents processed, 99.2% Accuracy. Stack: Angular, Python, NLP, ElasticSearch, Docker, AWS
- [Grupo Catalana Occidente](https://xtremis.com/en/case-studies/catalana-occidente) — Enterprise insurance technology modernisation. Metrics: 3x Deployment speed, -40% Maintenance costs, 24/7 Monitoring. Stack: Java, Kubernetes, OpenTelemetry, Jenkins, PostgreSQL, Redis
- [FSYC SSAT](https://xtremis.com/en/case-studies/fsyc) — Offline-first application for maritime inspections. Metrics: 100% Offline capable, +60% Productivity, 0 Data loss. Stack: Angular, IndexedDB, Django, PostgreSQL, Service Workers, PWA

## Our Process (AI-Accelerated)
01. **Intensive Discovery** — In 48-72h we define the full project scope. Stakeholder immersion sessions, analysis of your existing tech ecosystem and. Deliverables: Auto-Generated PRD, Architecture Map, Estimate in 72h
02. **Rapid Design & Prototyping** — Functional prototype in days, not weeks. We generate wireframes and design systems with AI assistance and validate them . Deliverables: Clickable Prototype, Design System, User Test Report
03. **AI-Accelerated Development** — Daily delivery cycles, not fortnightly. Our engineers work with AI agents that generate code, tests and documentation in. Deliverables: Daily Deliveries, AI Code Review, Generative Tests
04. **Continuous & Automated QA** — Every push triggers a full battery of unit, integration, E2E and security tests. AI detects regressions and suggests fix. Deliverables: Auto-Generated Test Suite, Security Scan, Performance Baseline
05. **Continuous Deployment** — Infrastructure as Code from day 1. Every merge to main auto-deploys to staging and, after validation, to production. No . Deliverables: IaC (Terraform), CI/CD Pipeline, Blue-Green Deploy
06. **Continuous Evolution** — There's no 'end of project'. We monitor, iterate and evolve your platform with real usage metrics. AI analyses behaviour. Deliverables: 24/7 Observability, Proactive Alerts, Evolutionary Roadmap

## Technology Stack
- **Frontend**: Angular, React, Vue 3, Next.js, Tailwind CSS
- **Backend**: Django, Go, Node.js, Spring Boot, gRPC
- **Cloud & DevOps**: AWS, Azure, Kubernetes, Docker, Terraform
- **IA & Data**: LlamaIndex, Ollama, LangChain, ChromaDB, Pandas
- **Seguridad**: OWASP, Sigstore, OPA, Vault, Zero Trust

## FAQ

### General

### Projects & Pricing

### Technology

### Working Process

## Site Pages
- [About Us — Team, values, timeline, and methodology](https://xtremis.com/en/company)
- [Technical capabilities, certifications, and engineering practices](https://xtremis.com/en/capabilities)
- [AI-augmented engineering methodology](https://xtremis.com/en/ai-driven-development)
- [AI-accelerated delivery workflow](https://xtremis.com/en/process)
- [Success stories and project showcases](https://xtremis.com/en/case-studies)
- [Technical insights and engineering articles](https://xtremis.com/en/blog)
- [Open positions and company benefits](https://xtremis.com/en/careers)
- [Frequently asked questions](https://xtremis.com/en/faq)
- [Sectors and industries we serve](https://xtremis.com/en/industries)
- [Get in touch with our team](https://xtremis.com/en/contact)
- [Custom software development service](https://xtremis.com/en/custom-software)
- [Web development service](https://xtremis.com/en/web-development)
- [Mobile app development service](https://xtremis.com/en/mobile-apps)
- [Artificial intelligence service](https://xtremis.com/en/artificial-intelligence)
- [Cybersecurity service](https://xtremis.com/en/cybersecurity)
- [IT consulting service](https://xtremis.com/en/it-consulting)

## Contact
- **Email**: info@xtremis.com
- **Barcelona HQ**: Av/ Diagonal 449, 4ª — 08036 Barcelona, Spain — +34 93 363 50 93
- **Bilbao Office**: C/San Vicente nº 8, 6ª — 48001 Bilbao, Vizcaya — +34 94 424 26 90

## Languages
This website is available in: Español (es), English (en), Français (fr), Català (ca), العربية (ar), Euskara (eu), Galego (gl)

## Legal
- [Privacy Policy](https://xtremis.com/en/legal/privacy-policy)
- [Cookie Policy](https://xtremis.com/en/legal/cookie-policy)
- [Terms of Service](https://xtremis.com/en/legal/terms-of-service)
- [Legal Notice](https://xtremis.com/en/legal/legal-notice)
- [Quality Policy](https://xtremis.com/en/legal/quality-policy)
- [Data Protection](https://xtremis.com/en/legal/data-protection)