▋
IndexWritingAbout
Projects

About

20 years in engineering. Production AI after the prototype.

Background

I lead AI engineering at Atlax360. The interesting work starts after the prototype: workflow engines that spam users, document classifiers that flag everything as fraud, and retrieval systems that find everything except the answer.

Right now that means three systems in production. BIFROST handles document intelligence. ORVIAN runs B2B workflow automation. Polaris serves internal knowledge search for support, sales, and product teams. Different surfaces, same unglamorous reliability problems.

My bias is toward context engineering, eval loops, and reliability. Most AI systems do not fail because the model is weak. They fail because the context is messy, the orchestration is vague, and nobody defined what good looks like.

I learned to code at nine with a Pascal book and a dictionary missing half its pages. At twelve I copied a hacker website from Geocities so badly I left their HTML comments in the source for six months. When TensorFlow landed, I got pulled into AI. My first chatbot was a disaster: ask about the weather and it tried to sell you insurance.

Before AI I spent years doing full-stack work for banks and retailers. BBVA, Bankinter, PagoFX, El Corte Inglés, Decathlon. Deadlines were real. Compliance was real. Production bugs were expensive.

My day-to-day stack is Python, FastAPI, Next.js, TypeScript, PostgreSQL with pgvector, Supabase, and Redis. OpenAI and Anthropic APIs when they solve the problem. Not as a reflex.

If you are building production AI and stuck in the unglamorous parts, that is usually the conversation worth having.

Principles

PRINCIPLE 01

Build for production from day one

PRINCIPLE 02

Evidence beats confidence

PRINCIPLE 03

Documentation is part of the deliverable

PRINCIPLE 04

Async by default

PRINCIPLE 05

Design for failure first

PRINCIPLE 06

Clarity over magic

Selected Experience

Atlax 360

4 yrs 7 mos

AI Engineering Lead

Leading AI systems inside Atlax360's financial products. BIFROST handles document intelligence. ORVIAN runs B2B collection workflows. Polaris powers internal knowledge search. Most of the work is evals, prompt discipline, cost control, compliance, and keeping the systems useful after launch.

Head of Frontend Platform

Leading the frontend platform behind Unicron, Atlax360's enterprise data product. The work is architecture, standards, component systems, and turning backend complexity into interfaces people can operate without guessing.

Sopra Steria

2 yrs 6 mos

BBVA | Frontend Lead Architect

via BBVA

Worked on frontend scalability and performance for BBVA. Built with Lit and Web Components in a banking environment where constraints were real and mistakes were expensive.

SOLUNION | Frontend Lead Architect

via SOLUNION

Reworked the existing frontend and built a new React application from scratch. The useful part was not React itself. It was understanding what the old system got right, what it got wrong, and carrying that forward.

PagoFX | Backend Lead Architect

via PagoFX (Santander)

Led a 12-person team building backend infrastructure from scratch for PagoFX. Worked on bank integrations, SWIFT constraints, and APIs that had to behave like financial software under real constraints.

Bankinter | Frontend Lead Architect

via Bankinter

Led a 20-person team through an Angular monolith rewrite. Built a DDD-based architecture in Angular 8, pushed on review quality, and spent a lot of time turning a large frontend into something that could keep growing without collapsing.

Stack

Backend
  • TypeScript
  • Python
  • JavaScript
  • Go
  • Rust
AI / ML
  • RAG
  • Semantic Search
  • Vector DBs
  • Qdrant
  • Weaviate
  • Supabase pgvector
Frontend
  • React
  • Next.js
  • Vue.js
  • Angular
  • Svelte

Earlier Work

knowmad mood

10 mos

El Corte Inglés | Backend Lead Architect via El Corte Inglés

Profile Software Services

1 yr 1 mo

Decathlon España | Frontend Lead Architect via Decathlon España

Relevant Traffic

9 mos

Pullmantur | Full Stack Engineer via Pullmantur

Dimensional Webs

4 yrs 8 mos

Full Stack Engineer

Gran Via 80

6 yrs 3 mos

Full Stack Web Developer

Education

Instituto Salvador Allende

2005 - 2006

Computer and Network Systems Operator

Professional Training Program, Computer Science

Focused on UNIX and Windows systems, TCP/IP, system administration, Assembly for PIC, and Pascal as the first serious programming language.

Eftimie Murgu University

Sep 1997 - Jun 2000

Program of Initiation in Computing

Pascal, operating systems, hardware basics, and early HTML and CSS for Netscape Navigator.

Contact
LinkedIn·X·GitHub
© 2026 Petru Arakiss•
XGitHubLinkedIn
|v2.0.77