Freelancer profile translated to English.

Description

Senior Backend Engineer with over 5 years of experience in designing and developing scalable backend systems using Node.js, TypeScript, Python, and AWS.

I specialize in:

Serverless architectures (AWS Lambda, API Gateway, DynamoDB)
Backend APIs and microservices
Cloud-native applications and system integrations
Performance optimization and maintainable architectures

I have worked on international projects in sectors such as banking, streaming platforms, and European R&D environments, collaborating with multidisciplinary teams and delivering production-ready solutions.

I value clean code, reliability, and clear communication, and I am comfortable taking ownership of backend systems from design to deployment.

I am currently available for hourly or part-time engagements, ideally supporting startups or teams needing a reliable backend or cloud engineer.

Languages

Spanish
Native or bilingual
English
Fluent

Workplace preferences

Remote only

Primarily works remotely

NN Group
Senior Backend Engineer
January 2024 - Today (2 years and 5 months)
Madrid, Spain
Designed and implemented serverless AWS services for banking workflows. Integrated SAP and Europort systems. Supported NN Bank's cloud digital transformation.
Serverless Architecture Amazon Web Services (AWS) DevOps Node.js Typescript
Optiva Media / EPAM
Lead Backend Software Engineer
January 2023 - January 2024 (1 year)
Led architecture design and backend development in Node.js, TypeScript, and Python. Optimized MySQL performance. Coordinated backend, QA, frontend, and product teams.
Node.js Python Amazon Web Services (AWS)
Optiva Media / EPAM
Software Engineer
January 2022 - January 2023 (1 year)
Developed backend services in Node.js and Python. Migrated monoliths to microservices. Implemented metadata ingestion pipelines and lightweight DRM encryption.