Description

I build backend systems for product teams that need to scale event flows, reduce cloud costs, or turn fragile services into production-ready platforms.

I am a Senior Backend Engineer with 5+ years of experience across Python, distributed systems, event-driven architecture and AWS. My recent work includes systems sustaining 100K+ events per second, an 80% reduction in streaming infrastructure cost, and backend services for a multi-tenant platform serving a seven-figure user base.

Selected delivery experience:

- Redesigned a playback telemetry path to publish directly to Kafka, removing RabbitMQ from the critical path.

- Migrated managed streaming from Confluent Cloud to Amazon MSK and reduced monthly infrastructure cost from approximately EUR 1,000 to EUR 200.

- Built and operated 10+ production microservices with Python/FastAPI, PostgreSQL, AWS, Docker, Kubernetes and Helm.

- Built Kafka consumers and Redis-backed state workflows, including event coalescing to reduce unnecessary writes.

- Increased automated test coverage from approximately 30% to 80% by redesigning Pytest and test-database infrastructure and removing flaky tests.

- Delivered tenant-aware MCP and RAG capabilities with controlled operational tools and human approval for writes.

I can own a defined backend workstream or join an existing product team to deliver Python services and APIs, event-driven integrations, cloud-native migrations, production hardening, or testing and reliability improvements. Applied AI complements my backend work; it is not a substitute for strong engineering fundamentals.

I work hands-on, communicate trade-offs clearly, and leave maintainable code, tests and operational context behind.

Based in Spain. Available full-time for remote projects in English or Spanish, with full CET overlap.

Industry field of expertise

Languages

Spanish
Native or bilingual
English
Fluent
French
Basic

Workplace preferences

Remote only

Primarily works remotely

Plénitas
Senior Backend Engineer
PRESS AND MEDIA
July 2025 - July 2026 (1 year)
Redesigned playback telemetry for 100K+ sustained events/sec, publishing directly to Kafka and removing RabbitMQ from the critical path. Migrated managed Kafka from Confluent Cloud to Amazon MSK, reducing streaming costs by 80%. Built a Kafka-based viewing-progress service for a seven-figure user platform, using event coalescing to reduce Redis write pressure. Contributed backend orchestration for AWS media workflows spanning live ingestion, adaptive delivery, clipping, transcoding and transcription. Built a multi-tenant MCP platform with token-derived isolation, tenant-scoped GraphQL tools, human approval for writes and RAG over 100+ Confluence pages.
Apache Kafka Amazon Web Services Python Event-driven architecture MCP
Deutsche Telekom
Python Backend Engineer
November 2023 - July 2025 (1 year and 8 months)
Developed and operated 10+ production microservices with Python/FastAPI and PostgreSQL on AWS, using Docker, Kubernetes and Helm. Owned releases from application versioning through environment promotion; diagnosed and resolved failures caused by incorrectly applied database migrations.
Python Kubernetes FastAPI Docker PostgreSQL
Workdeck
Full Stack Engineer
February 2023 - November 2023 (9 months)
Built Python/FastAPI services and Angular features for a multi-tenant SaaS platform serving approximately 30 customer organizations. Delivered Shopify, LinkedIn and Google integrations plus event-driven AWS workflows and containerized cloud deployments.
Python Docker Amazon Web Services FastAPI Kubernetes