Mario L.
I’m a software engineer based in Valencia, passionate about building scalable backend systems and delightful frontend experiences.
About
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.
- 3 years' experience
- Joined December 2025
Skills· 13
Languages
- EnglishFluent
- RussianFluent
- Spanish; CastilianFluent
- Catalan; ValencianFluent
- Romanian, Moldavian, MoldovanFluent
Industry experience
- Software & Internet
- Computers & Electronics
- Professional Services
- Media & Entertainment
Work experience
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.
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.
Education
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