Services

One partner for AI and software, end to end

Strategy, design, engineering, and delivery under one roof. We plug in as your product team and own the outcome from idea to production.

AI & Agentic Systems

Production AI, not proofs-of-concept.

We build AI that ships: autonomous agents, predictive models, and LLM assistants wired into your real data and workflows, measured by what they return.

  • AI agents & agentic automation
  • Predictive analytics & ML models
  • RAG assistants on your own data
  • Integration of off-the-shelf AI tools
Explore the AI Lab

Custom Software & SaaS

Scalable platforms you own.

Need your own internal tool or product? We design, build, and evolve scalable custom software and SaaS platforms that grow with your business.

  • Internal tools & custom SaaS
  • API design & system integration
  • Architecture built to scale
  • Full product ownership, end to end

Mobile Development

Advanced mobile solutions for optimal performance.

Native and cross-platform apps for iOS and Android, engineered for performance, polish, and the App Store / Play Store from day one.

  • iOS & Android native
  • Flutter & React Native
  • Offline-first & real-time apps

Web Development

Reliable, secure, intuitive.

Robust web applications with secure server foundations and interfaces your users actually enjoy, from marketing sites to complex dashboards.

  • Web apps & dashboards
  • Secure, reliable back ends
  • Performance & SEO baked in

Hybrid & Cross-Platform

Build once, ship everywhere.

Cross-platform hybrid development for seamless integration across devices: one codebase, consistent experience, faster time to market.

  • Single codebase, multi-platform
  • Seamless device integration
  • Lower cost, faster delivery

UI/UX Design

Unified design for every platform.

Product strategy and interface design that follows platform guidelines and converts, from first wireframe to a polished, accessible system.

  • Product & UX strategy
  • Design systems & prototyping
  • Accessible, on-brand interfaces

DevOps & Cloud

Security, automation, cloud.

Consulting and delivery across security, automation, and cloud services, so your products ship continuously and run reliably at scale.

  • CI/CD & release automation
  • Cloud architecture (AWS, Azure, GCP)
  • Security & monitoring

Dedicated Teams

Skilled experts to augment yours.

Need more capacity? Spin up a dedicated squad of senior engineers and designers that integrates with your team and scales up or down on demand.

  • Senior engineers & designers
  • Flexible, scalable capacity
  • Embedded in your workflow
Upskill your own team
Technology

The stack we build on

A deep, modern toolkit, so we pick the right technology for your product, not the one we're stuck with.

AI & Machine Learning

TensorFlowPyTorchLangChainHugging FaceScikit-learnOpenCVKerasPandasNumPy

Backend

.NET CoreNode.jsNestJSExpressDjangoFastAPISpring BootRuby on RailsLaravelGoLang

Frontend

ReactNext.jsVue.jsAngularTailwind CSSBootstrapHTML5CSS3

Mobile

FlutterReact NativeSwiftKotlinXamarinIonic

Databases

PostgreSQLMongoDBMySQLMicrosoft SQLRedisFirebaseSupabaseDynamoDB

Cloud & DevOps

AWSAzureGoogle CloudDockerKubernetesJenkinsGitCI/CD

Not sure where to start?

Tell us the outcome you're after. We'll recommend the shortest path to a shipped product.

Contact us

Tell us about your project

Send us what you're trying to build and we'll come back within 24 hours with a clear next step.

Prefer to email? Reach us at santiago@nexxai.world

Talk to us directly

Whether it's an AI product, a full app build, or upskilling your team, we're ready when you are.

 santiago@nexxai.world

 +34 603 352 552

 Barcelona · Boston · Florida · Lahore

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We'll be in touch within 24 hours to talk through how we can help you ship.