Marc Colldeforns Armero

• • Engineered robust REST APIs.

• • Optimised database queries reducing overall latency.

• • Deployed multiple microservices to production.

• • Designed and implemented end-to-end testing workfows integrated into the release pipeline.

• • Developed and maintained AWS Lambda functions supporting critical business processes.

• • Owned the architecture, delivery, and maintenance of several microservices.

• • Built TalkTime, an interactive chatbot game that helps users improve English through realistic voice conversations, as the sole developer and technology lead.

• • Developed the entire product stack end-to-end, from backend services to real-time front-end interfaces.

• • Built real-time conversation analysis systems to provide actionable coaching feedback.

• • Integrated Large Language Models (LLMs) and Speech-to-Text for accurate, AI-driven language interactions.

• • Design, develop, and maintain frontend and backend applications supporting Ibercasa's core business operations.

• • Contribute to the migration and refactoring of legacy systems into modern, maintainable, and scalable architectures.

• • Build and enhance internal platforms that improve customer experience and operational eficiency across multiple business areas.