Looks like you have JavaScript disabled. For the full Twine experience, you will need to re-enable it.

I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences. I enjoy working across the stack, from API design and cloud infrastructure to React-based interfaces, and I love turning complex problems into robust, maintainable solutions. Recently I’ve been focusing on ML-powered features, data pipelines, model evaluation tools, and production-grade ML services. I thrive in collaborative teams and enjoy optimizing performance, reliability, and security.…I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences. I enjoy working across the stack, from API design and cloud infrastructure to React-based interfaces, and I love turning complex problems into robust, maintainable solutions. Recently I’ve been focusing on ML-powered features, data pipelines, model evaluation tools, and production-grade ML services. I thrive in collaborative teams and enjoy optimizing performance, reliability, and security.

Mario L.

Full Stack Developer, Front-End Developer, Back-End Developer, +2





I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences. I enjoy working across the stack, from API design and cloud infrastructure to React-based interfaces, and I love turning complex problems into robust, maintainable solutions. Recently I’ve been focusing on ML-powered features, data pipelines, model evaluation tools, and production-grade ML services. I thrive in collaborative teams and enjoy optimizing performance, reliability, and security.…I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences. I enjoy working across the stack, from API design and cloud infrastructure to React-based interfaces, and I love turning complex problems into robust, maintainable solutions. Recently I’ve been focusing on ML-powered features, data pipelines, model evaluation tools, and production-grade ML services. I thrive in collaborative teams and enjoy optimizing performance, reliability, and security.

Available to hire

I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences. I enjoy working across the stack, from API design and cloud infrastructure to React-based interfaces, and I love turning complex problems into robust, maintainable solutions.

Recently I’ve been focusing on ML-powered features, data pipelines, model evaluation tools, and production-grade ML services. I thrive in collaborative teams and enjoy optimizing performance, reliability, and security.

Skills

Experience Level

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Expert

Intermediate

Language

English

Fluent

Russian

Fluent

Spanish; Castilian

Fluent

Catalan; Valencian

Fluent

Romanian, Moldavian, Moldovan

Fluent

Work Experience

Software Engineer at Polytechnic University of Valencia

September 1, 2023 - January 1, 2024

Formed and contributed to a design and development team for an enterprise-level mobile and desktop social media application. Designed and implemented scalable APIs and backend to ensure high availability and robust security.

Software Engineer at Sopra Steria Valencia

February 1, 2024 - Present

Developed and maintained LLM-powered features, including retrieval pipelines, fine-tuning workflows, and model evaluation tools. Improved model performance through data curation, prompt optimization, and iterative experimentation with training and inference setups. Built and deployed production-grade ML services, collaborating with backend teams on APIs, monitoring, and scaling. Designed small internal agents/automation tools to streamline operations and reduce manual workload. Conducted regular A/B tests, error analysis, and metric reporting to guide model improvements.