Architecting, automating, and scaling mission-critical technical infrastructure for B2B companies. From operational AI and BPMN workflows to custom resilient platforms where one hour of downtime costs real money.
15 min · with Pablo Fesa · Direct engineer talk, no sales pitch · or email [email protected]
Verified Production Benchmarks & Metrics
If your business bills well but you feel like...
Leads message you... and wait for hours. Meanwhile, they buy from whoever replies first.
Every quote steals days from you between spreadsheets, calls and back-and-forth.
Follow-up depends on your memory: opportunities die in silence.
Your information lives scattered across WhatsApp, emails and spreadsheets that do not talk to each other.
You're not short on customers. You're short on a system. And building it is cheaper than you think.
Calcular impacto en mi negocio →Slide according to your company's operational volume and see the immediate payoff of an autonomous custom system.
Autonomous pipeline architecture behind the scenes:
Automated Ingestion
Fine-tuned OCR / WhatsApp API / asynchronous webhook intake.
AI Extraction
Field validation, LLM parsing, deduplication and anomaly checks.
Business Logic
Instant SLA compliance, follow-up rules, zero human errors.
ERP/CRM Sync
Direct entries in ERP, closed tickets, 100% automated.
*Based on production metrics from real deployments (e.g. SAT case study with +81k entries and 676% ROI).
At FeSa we design the system that sells and operates for you.
Funnels that qualify on their own, WhatsApp quotes in minutes and automatic follow-up all the way to the close.
We map your processes with BPMN and connect your CRM, billing and sales channels so everything flows on its own.
Assistants that answer your customers 24/7 and do the work of 3 people in seconds.
Websites, apps, SaaS platforms and internal systems. If the tool you need does not exist, we build it.
Real examples of sales automation we build for SMBs like yours.
FeSa · Asistente
online
Hi, I need a quote to refurbish the electrical installation of my warehouse, about 400m2
14:02
Hi there! Happy to help 👍 Does the warehouse already have a three-phase panel, or are we starting from scratch?
14:02
Three-phase already installed
14:03
Perfect. Here's your quote:
Quote-2847.pdf
€11,480 · VAT incl.
14:04
The customer asks, the AI calculates and sends the quote in 2 minutes. No waiting, no spreadsheets.
Every contact gets a reply in seconds. At 3 in the afternoon or 3 in the morning.
Automatic reminders and messages until a yes or a no. No opportunity forgotten.
CRM, billing and sales channels connected: data moves on its own, no copy and paste.
Less library inventory, more real impact: the bottlenecks they resolved and the production disasters they prevented.
Thousands of supplier invoices piled up monthly, causing manual entry errors and delayed financial closings.
Specialized OCR extraction with direct automated posting into enterprise ERP.
Judicial auctions scattered across 25 official sources requiring constant manual monitoring to avoid missing bids.
Automated catalog aggregation in under 1 hour and high-precision .NET bidding triggered 5s before deadline.
Customs clearance required a continuous 24/7 shift with high risk of holding up shipments at port.
Automated DUA document processing and submission with direct Itramit integration.
Government ministries relied on obsolete analog fax machines and vulnerable communications without audit trails.
Replaced with secure digital mail relay (RightFax) and VoIP telephony on Dell servers with official authentication.
Beyond consulting: I engineer and operate real-world SaaS platforms from database schema design to production deployment and user experience.
Digital disposable camera for events with zero app downloads
Enables guests to capture and share photos instantly via QR code from any mobile browser. Features live projection walls, delayed reveal, and scheduled photo deletion upon event expiry.
Mobile and cloud platform for vehicle and fleet maintenance
Cross-platform Flutter application for tracking vehicle service intervals, fuel logs, expenses, and policies, backed by self-hosted Supabase infrastructure on a dedicated ARM64 VPS.
Deterministic vehicle damage appraisal agent with LangGraph
5-node deterministic StateGraph evaluating visual vehicle damage and generating itemized repair estimates without hallucinations using Neo4j and local pgvector embeddings.
A clear three-phase process to transform the way you operate.
We analyze where you lose sales and time: unanswered leads, slow quotes, broken processes. We design the ideal flow with BPMN and you get a clear map of opportunities.
We build your sales and operations system: automations, AI, integrations and custom development (websites, apps, platforms). Without your team stopping for a single day.
Maintenance, continuous improvement and monthly tech leadership. The system sells better every time and you get a technology team without the cost of an in-house one.
Hi, I'm Pablo Fesa. I've watched dozens of companies drown in their own success for lack of scalable processes.
Companies that bill well, but where the team works twice as hard as needed. Where leads wait and sales go cold. Where the owner is the only one who knows how everything works.
Throughout my career I have built it all: social networks, SaaS platforms, apps and systems for large companies in telecom, retail, insurance, energy and hospitality. My mission now is to bring that same engineering within reach of small and mid-sized businesses: companies with 5, 15 or 50 employees.
Because the problem is never the technology. It's not knowing where to start.
Pragmatic system architecture, performance optimizations, and backend battle-tested patterns.
38ms was with a GPU. On CPU, 94 to 848ms depending on the machine. Real benchmarks, the thread trap, ONNX vs PyTorch, and how the deployment ended up on a VPS.
How to architect complex enterprise applications in Laravel without letting Eloquent pollute business rules: Ports and Adapters, immutable PHP 8.2 Value Objects, and strict layer boundaries.
Why tech giants like Slack, Wikipedia, and Meta continue investing in PHP: the operational economics of stateless workloads in Kubernetes, maximum static analysis, and cooperative concurrency with Fibers.
Let's talk for 15 minutes. We will analyze your primary operational bottleneck and outline the exact architecture to solve it with automation and AI. Straight to the point with an actionable roadmap from day one. Pablo