Salvador F. Criado
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Services dossier

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SCSalvador F. CriadoServices dossier

Applied AI specialist

Applied artificial intelligence and custom software for businesses

We specialise in applied artificial intelligence. We build voice and text agents, automate documents and processes, connect AI to your systems and build the software and cloud it runs on. Over eight years of production software: if your project needs it, we build it.

admin hours spent on invoice handling
−80%
of invoice bookkeeping automated
90%
for our voice agent to reply, on real calls
< 2 s
to read an invoice and prepare its journal entry
Seconds
from zero to AI in production for a product team
2 months
users on the platform we're migrating
100,000+
sectors: contact centres, industry, energy, online learning, restaurants and accounting
6
years of production software
8+
01

The full range

SCSalvador F. Criado

From idea to production, at any point along the way

AI rarely arrives on its own: it needs data, integrations, software and infrastructure to run on. We handle all of it, so we can take on a whole project or just the piece you are missing.

AI agentsThey converse, decide and act.

  • Voice agentsThey answer calls in a natural voice and resolve or route them according to your rules.
  • Conversational agentsOn your website, in internal chat or in messaging apps, with your information and your tools.
  • Process agentsThey chain steps together, query your systems and ask a person for approval when needed.

AI on your dataIt reads, finds and understands.

  • DocumentsInvoices, contracts and forms read, checked and recorded.
  • Company knowledgeAnswers from your manuals and contracts, citing the source.
  • Models on your serversOpen models deployed, optimised and measured on your own infrastructure.
  • Security and controlPersonal data protection, filters, traceability and continuous evaluation.
  • AI in your teamBringing AI into your technical team, with good practices and training.

Software, data and infrastructureWhat makes it all work.

  • Custom softwareWeb applications, internal dashboards and APIs.
  • IntegrationsCRM, ERP, booking and accounting systems connected, with n8n or custom code.
  • Real-time dataSensors, telemetry, alerts and dashboards.
  • Cloud infrastructureAWS and Azure defined as code, with automated deployments and costs kept in check.
  • Technical auditSecurity, costs and architecture, with a prioritised improvement plan.

Where it fits

Hotels and tourismPhone bookings and enquiries at any hour, supplier invoices for each property and instant answers on group terms.
Construction and real estateDelivery notes and invoices assigned to each site, progress portals for clients and searchable technical documents.
Accounting and law firmsInvoices and receipts turned into journal entries, and quick answers about client files.
Industry and energySensors, alerts and plant data in real time, with an assistant that answers questions about them.
Healthcare and regulated sectorsVoice and AI running on your own servers, with data never leaving the building.
Retail and servicesCustomer service, orders and integrations between the tools you already use.

Your case doesn't fit any of these boxes? That's normal. We have worked in phone support, industry, energy, education, hospitality and accounting, and we get up to speed quickly with how each business works. Tell us about it and we'll tell you honestly whether we're the right fit.

02

Services

SCSalvador F. Criado

Agents that talk and write, documents that process themselves, automated bookkeeping, and the software and cloud they run on.

Voice agents

Voice agents that answer, understand and resolve

Custom phone agents that answer at any hour and resolve or route calls according to your rules.

  • Calls handled out of hours and at peak times; whatever it cannot resolve is passed on or noted down
  • Your team spends its time on the cases that really need it

View service →

Conversational agents

Agents that know your business and get the work done

They answer from your information, cite the source and carry out tasks in your systems.

  • Fewer interruptions for your experts
  • Consistent answers across the whole team

View service →

Document processing

Documents that read and file themselves

Invoices, delivery notes and contracts read, checked and recorded without typing a thing.

  • Up to 80% fewer admin hours
  • Data available the same day the document arrives

View service →Live example: GestoIA ↗

Invoicing and bookkeeping

Incoming invoices turned into bookkeeping

From the supplier invoice to a balanced journal entry, ready to export.

  • Up to 90% of invoice bookkeeping automated
  • Books kept up to date without keying in data by hand

View service →Live example: GestoIA ↗

Custom development

The software your operation needs and can't find off the shelf

Custom applications, integrations and data platforms, with AI where it helps.

  • A tool built around your process, not the other way round
  • Data that moves between systems on its own

View service →

Cloud infrastructure

Your cloud, organised, automated and under control

AWS and Azure automated, secure and with spending monitored. Migrations planned in phases.

  • Deployments in hours instead of days
  • Cloud costs visible and under control

View service →

03

Work

SCSalvador F. Criado

Projects we have been responsible for from start to finish, each with its challenge, solution and result. For confidentiality, clients are described by sector.

< 2 s

response time, end to end

Business call centre

Private voice agent on the client's own servers

A complete Spanish-language voice agent, connected to the phone system and tested on real calls, with no data leaving the client's network.

Result: Real calls handled end to end with responses in under 2 seconds, in natural Spanish and with all data kept inside the client's network.

1,000+

connected sensors

Industry

Real-time data platform with an AI assistant

An industrial telemetry platform with real-time alerts and an assistant that answers questions about and acts on the live data.

Result: The platform kept running and evolving with a fraction of the original team.

100,000+

users on the platform

Online learning platform

Full migration from AWS to Azure

A learning platform with several independent clients, being moved from AWS to Azure in phases.

Result: In progress, in phases: each client is migrated and validated independently.

1 hour

per deployment (was one week)

Multinational energy company

Infrastructure as code and automated deployments

From week-long manual deployments to a one-hour automated process, for a platform serving several clients.

Result: Deployment time dropped from a week to an hour.

2 months

from zero to production

Restaurant software

AI in production from scratch

Getting a product team started with AI: platform, traceability, quality checks and ways of working.

Result: AI in production in two months, on a foundation the team adopted.

Audit

security, costs and agent-based development

Digital agency

Technical audit and development with AI agents

A full audit of an agency's software, fixes for its security risks and a method that lets a non-technical team build with AI agents.

Result: Critical risks fixed, infrastructure unified and a non-technical team able to evolve its own software with AI agents.

90%

of invoice bookkeeping automated

Own product · GestoIA

Invoices turned into bookkeeping

Automatic reading of invoices and receipts and preparation of journal entries: 90% of the work automated and 80% fewer admin hours.

Result: 90% of invoice bookkeeping automated and 80% fewer admin hours, with every entry linked to its invoice for audit.

gestoia.es ↗
04

How we work

SCSalvador F. Criado
  1. 0130 minutes

    Assessment

    We get to know what you want to improve and tell you honestly whether AI makes sense there.

  2. 022–4 weeks

    Focused pilot

    One real use case, a measurable goal agreed upfront and a fixed price.

  3. 03Depends on scope

    Roll-out

    Integration with your systems, security, testing and training for your team.

  4. 04Monthly

    Ongoing support

    We make sure it keeps working, measure the results and improve it based on real use.

Why work with us

We know AI inside out. And we know how a business works.

That combination lets us design the solution that fits your business and choose the most viable option in each case, instead of always selling the same tool.

  • AI, from the insideWe deploy, tune and evaluate models, not just use them. We know what each tool can do and where it fails.
  • Business, from the insideEight years in companies across very different sectors. We understand processes, costs and constraints before proposing technology.
  • Production engineeringPlatforms with 100,000+ users, 1,000+ real-time sensors and automated deployments. What we deliver keeps working.
  • Direct contactYou talk directly to whoever designs and builds the solution. No hand-offs, no sales layers.

Integrate, combine or build: whatever your business needs

01 · Integrate

Off-the-shelf platforms, properly connected

For validating quickly or moderate volumes.

ElevenLabs · OpenAI · Deepgram · n8n

02 · Combine

Market models, custom logic

When the AI has to work on your real processes.

Claude · GPT · Bedrock · Langfuse

03 · Build

A complete solution on your servers

For sensitive data, high volumes or requirements nobody else covers.

vLLM · Mistral · Whisper · Asterisk

About

I'm Salvador F. Criado, an applied AI specialist and software engineer. You work directly with me, from the first conversation until the solution is up and running.

  • CertificationAWS Certified DevOps Engineer – Professional
  • CertificationCertified ScrumMaster
  • AI trainingAgentic AI and Retrieval Augmented Generation — DeepLearning.AI
  • Master'sElectronic Systems — Technical University of Madrid
  • DegreeTelecommunications Engineering — University of Granada
  • LanguagesSpanish (native) · English (professional) · French (basic)

Contact

Tell us what you want to solve.

We reply with specific questions or a suggested 30-minute call.