Current role
Software Architect
· Senior Staff Engineer
I work across architecture, implementation and delivery, weighing integration, reliability and security choices against product needs and business constraints.
Software architecture · Engineering leadership · Product thinking
Reliable systems.Useful products.
I'm Xavier, a software architect and senior staff engineer with experience leading engineering teams and owning payment platforms.
I connect architecture, hands-on engineering and product decisions to help teams build software they can operate and evolve.
Explore my workBased in BarcelonaSelected work
Experience
From the code
to the wider decision.
My perspective comes from working across software, teams and the platforms they build.
Software Architect
The path here
Engineering leadership
& payment platform ownership
My background includes hands-on software engineering in payments, e-commerce and telecommunications, leading development teams and owning payment platforms. Product Owner and Scrum Master responsibilities have added a perspective that runs from priorities through to delivery.
Selected work
Ideas, decisions,
working software.
Three different ways I put engineering and product thinking into practice.
Recovery should
have a ramp.
A service can recover enough to answer a few requests before it can handle its usual traffic.
I've proposed an optional CircuitBreaker policy that brings traffic back gradually. Each phase combines a target percentage, a minimum duration and completed-call health checks. When health deteriorates, STEP_BACK can reduce admission to the preceding phase.
The decisions behind it
Keep standard recovery as the default. Make gradual recovery opt-in, preserve the public HALF_OPEN state and expose additional recovery metrics.
The separate lab lets you trigger failures, change traffic and recovery settings, and compare standard and gradual behaviour in local Prometheus/Grafana dashboards.
Read the proposalPolicy illustrationNo live traffic
OPENHALF_OPENCLOSED
Target admission25%
Public stateHALF_OPEN
A 25% admission target, with the public state still HALF_OPEN.
Local festivals.
More to discover.
An independent product that turns official festival programmes into a searchable agenda across municipalities.
The problem
Programmes are spread across places and documents. Finding the activities that fit your plans takes more work than it should.
The product decision
Bring discovery into one agenda. Let people filter activities, explore concerts and build their own programme without creating an account.
Visit the project
Product thinking, information design and software engineering around an everyday need.
A small tool.
A precise job.
Run OpenSSL with its FIPS provider, with the build choices made explicit.
Runtime and provider versions are independently configurable. Source downloads are verified, and automated checks exercise the resulting installation and random generation.
Source & usageRun the public container
docker run --rm ghcr.io/xcapdevila/openssl-fips \
"openssl rand -provider fips -base64 32"Linux AMD64 + ARM64Public image
Using a FIPS provider does not by itself establish a validated deployment. The project documents that distinction.
Perspective
The system.
The team.
The reason behind it.
Architecture reaches beyond a diagram. It shapes how software is delivered, operated and changed—and how people work together.
01
Make the tradeoffs explicit.
Understand the constraints, explain the alternatives and connect technical choices with product needs and business consequences.
02
Design for life in production.
Failure behaviour, observability, security and maintainability belong in the decisions made while building a system.
03
Help teams develop judgement.
Technical direction, engineering practices and shared understanding help people make decisions and carry them through.
About
An architect.
Still an engineer.
I like building things, understanding the business behind them, and helping people grow.
I'm interested in practical uses of AI, business development and entrepreneurship. Personal projects like Programes de Festa Major are a way to explore those interests through a real product. I'd also like to mentor engineers, sharing experience and helping them develop their own judgement.
Computer Engineering at UOC · thePowerMBA programme
Away from the keyboard
Trail running, cycling, hiking, skiing, music and travel.
Contact
Get in touch
Architecture, engineering leadership, payments—or a product idea taking shape.
Message me on LinkedIn Find me on GitHub