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I am a Backend Semi Senior Developer with over 3 years of experience building scalable and robust solutions in Python. I follow best practices in clean architecture and API design, and I have a passion for integrating AI-powered features into production systems.…

Yesenia Valdés Rodríguez

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I am a Backend Semi Senior Developer with over 3 years of experience building scalable and robust solutions in Python. I follow best practices in clean architecture and API design, and I have a passion for integrating AI-powered features into production systems.…

Available to hire

I am a Backend Semi Senior Developer with over 3 years of experience building scalable and robust solutions in Python. I follow best practices in clean architecture and API design, and I have a passion for integrating AI-powered features into production systems.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

Spanish; Castilian

Fluent

English

Advanced

Portuguese

Beginner

Work Experience

Full-Stack Developer at Citmatel

June 1, 2024 - January 1, 2026

Worked as a full-stack developer, improving the scalability of management applications and optimizing the user experience. Diagnosed and resolved N+1 query and missing index issues at the database layer, reducing response times in critical endpoints by up to 60%. Developed a real-time notification system and implemented RBAC with detailed policies; modernized the frontend with clean design patterns.

Backend Developer at Avangenio

March 1, 2024 - March 1, 2025

Developed domain modules following DDD; designed and versioned RESTful APIs with OpenAPI, reducing average latency by approximately ~30% through query optimization and caching. Implemented the repository + unit of work pattern and integrated event-driven communication between services; automated test coverage above 80%.

Freelance Full-Stack Developer at Independent

January 1, 2022 - Present

Developed more than 5 web applications for clients from different sectors, applying clean architecture and layered separation to ensure maintainable and scalable codebases. Designed and implemented relational schemas tailored to each business domain, with attention to normalization, referential integrity, and query performance from the design stage. Built interfaces applying responsive design principles to deliver accessible, production-ready frontends.