Open to opportunities

Pau Ferran Grau

@pauferrangrau

Tech Lead · 20 years in distributed systems · PHP/Symfony & Go · DDD · Event-driven · AI-augmented engineering in production.

Spain

Message

What I'm looking for

I’m looking for a backend/architecture leadership role where I can modernize systems, lead distributed teams, and build AI-augmented platforms—using spec-driven methods, strong observability, and reliability targets like 99.9%+.

I'm a Tech Lead with 20 years of experience building and transforming backend systems. My core stack is PHP/Symfony and Go, with a strong background in Domain-Driven Design, hexagonal architecture, event-driven systems, and high-concurrency distributed platforms.

At Platinium Group I led a full architectural transformation — from a legacy monolith to a modern DDD platform with 13+ bounded contexts, 7,000+ automated tests and 99.9%+ availability at 5M+ weekly requests. I've also built production Go microservices and worked on critical backend systems at eDreams ODIGEO and Dorna Sports (MotoGP).

More recently I've been leading an AI-augmented engineering initiative: AWS Bedrock multi-model pipelines, RAG over PostgreSQL with pgvector, LLM observability with Langfuse, and an MCP server with Spec-Driven Development using OpenSpec. I'm also a Doctrine DBAL contributor.

I'm looking for a remote or Barcelona-based Senior/Staff Backend Engineer role where technical ownership and engineering quality matter.

Experience

Work history, roles, and key accomplishments

Current

Tech Lead / Staff Backend

Current

Platinium Group SAM

Aug 2018 - Present (7 years 8 months)

Led an architectural transformation from a legacy monolith to a modern DDD API platform with 13+ bounded contexts, 7,000+ automated tests, and 95% coverage. Designed event-driven microservices with RabbitMQ (priority queues, DLQ, event versioning) and delivered 99.9%+ availability with 5M+ weekly requests at 128ms average response time, including an AI-augmented architecture using AWS Bedrock and

Microservices RabbitMQ Distributed Tracing (Zipkin Grafana)Go

Senior Backend Developer

eDreams ODIGEO

Jun 2017 - Aug 2018 (1 year 2 months)

Built a greenfield hotel inventory microservices platform from scratch using DDD, CQRS, and event sourcing. Focused on code quality through unit testing, CI integration, and peer code reviews, supporting core services with RabbitMQ, Redis, MariaDB, and Elasticsearch.

Microservices CQRS Event Sourcing Unit Testing CI CD MariaDB Redis RabbitMQ

Senior Web Developer

Dorna Sports (MotoGP)

Jul 2015 - May 2017 (1 year 10 months)

Introduced Domain-Driven Design, Hexagonal Architecture, and Event Sourcing to establish the technical foundation for MotoGP and World Superbikes platforms. Built REST APIs with Symfony 3 and FOSRestBundle and established a unit testing culture using PHPUnit, Mockery, and Phake.

Domain Driven Design Event Sourcing Symfony REST APIs PHPUnit Phake MySQL RabbitMQ

Web Developer & Scrum Master

Atrapalo

Mar 2010 - Jul 2015 (5 years 4 months)

Delivered full-stack development for national and international e-commerce projects with millions of visits per month while serving as Scrum Master in agile teams. Worked across PHP/MySQL/Redis-backed services and search/messaging components to support scalable application delivery.