Freelancer profile translated to English.

Description

Senior Backend Engineer with +8 years of experience designing and building scalable backend systems in cloud environments (Azure/AWS).

Specialized in microservices architectures, REST APIs, and distributed systems focused on high availability and transactional reliability.

Experience in:

Pharmaceutical and loyalty platforms with millions of users
AI Systems (LLMs, RAG, production voicebots)
Air distribution and insurance systems
Industrial automation

Expertise:.NET Microservices, Kafka and event-driven architecture, Kubernetes, Terraform, complex integrations, and legacy system modernization.

Focus on:clean architecture, long-term maintainability, and production robustness.

Industry field of expertise

Languages

English
Native or bilingual
Spanish
Native or bilingual
Romanian
Native or bilingual
Catalan
Native or bilingual

Workplace preferences

Can work on-site

Barcelona (up to 10km)

M47 Labs
Senior Backend Developer | Technical Lead
SOFTWARE PUBLISHING
July 2023 - November 2024 (1 year and 3 months)
Barcelona, Spain
Built AI solutions from scratch: document processing, data analysis, real-time customer support voicebot.
AI Document Processing for publishing (book categorization at scale)
Market research platform questionnaire analysis (open-ended, aggregated, percentage responses)
Conversational Voicebot: RAG strategy, real-time orchestration via WebSocket (LLM/STT/TTS), sub-second responses
AI integration into Salesforce Einstein for an insurance company (claims processing workflows with fraud detection, policy validation)
.NET AWS Kubernetes Artificial Intelligence Generative AI
The Hubs
Senior Backend Developer
PHARMACEUTICALS INDUSTRY
December 2024 - January 2026 (1 year and 1 month)
Barcelona, Spain
Designed and implemented the backend architecture for a European pharmaceutical loyalty platform (millions of users).
.NET Microservices + Kafka (event-driven)
Multi-country infrastructure with feature flags
Modules: authentication, medication reservations, product search, stock management, coupon engine with segmentation
Microsoft Azure Terraform Kubernetes .NET Apache Kafka
HOLA CONSULTORES
Technical Lead
AVIATION AND AEROSPACE
March 2023 - July 2023 (4 months)
Barcelona, Spain
Led the IT area for Distribution and Payments for an international airline.
Technical lifecycle of systems: reservations, PNR generation, payment workflows
Cross-functional team (developers, QA, business analysts)
Technical analysis, task breakdown, estimations
Client management for B2B integrations with OTAs
.NET REST API SQL Server AWS Angular