# Diego Téllez Barrero > AI-native Senior Software Engineer · Distributed Systems · Applied AI ## Profile Senior software engineer working across distributed systems, applied AI, cloud infrastructure and backend platforms. Shipped production NLP, GenAI and RAG services; built systems supporting hundreds of thousands of players; reduced AWS costs by approximately $50,000 per year. My focus is AI-native engineering: understanding the problem, designing maintainable systems, using AI to build, verifying the result and taking responsibility for product outcomes. - Based in Santa Cruz de Tenerife, Spain. - Contact: contact@diegotellez.net - Engineering focus: AI-native software engineering: problem framing, system design, technical judgment, AI-assisted implementation, verification and ownership of customer and business outcomes. - Independent project: Echoes of the Cove, full time since October 2025. Planned release: 2027 (creator's plan; Steam currently says to be announced). - Availability: Contact Diego directly to discuss opportunities or collaborations. No employment availability is implied. ## Authoritative first-party resources - [Structured profile](https://diegotellez.net/.well-known/profile.json): Full career history, dates, skills, projects, education and sources. - [Readable résumé](https://diegotellez.net/resume/): Equivalent career information in accessible HTML. - [Download CV (PDF)](https://diegotellez.net/assets/Diego-Tellez-CV.pdf): Original CV, available directly. - [Portfolio](https://diegotellez.net/): Selected work and contact. - [Blog](https://diegotellez.net/blog/): First-person notes on AI-native engineering and professional experience. - [GitHub](https://github.com/dtellz) - [LinkedIn](https://www.linkedin.com/in/diegotellezbarrero/) - [Echoes of the Cove](https://echoesofthecove.com) ## Experience ### Senior Software Engineer & Founder - Silent Tide Software Nov 2024 – Present - Lead end-to-end development of Echoes of the Cove, a commercial cross-platform 2D action RPG planned for 2027. - Own a custom C# / MonoGame-based engine, scripting systems, AI behavior, physics, data-driven gameplay and developer tooling. - Profile and optimize CPU, memory and rendering performance; manage production planning, QA, build pipelines and release preparation. - Provide technical direction and integration standards for external contributors. Full-time focus since leaving the last employed role in October 2025. ### AI Software Engineer - Carina AI Studio Jun 2025 – Oct 2025 - Built high-performance FastAPI endpoints exposing AI models and automated ML/DL training, validation and serving pipelines. - Worked with PostgreSQL, vector stores, Pydantic and LangChain / LangGraph to deliver production AI features. - Deployed and monitored solutions on AWS with Docker, Kubernetes and GitHub Actions. ### Senior Backend Engineer - UnusuAll Dec 2024 – Jun 2025 - Designed and maintained distributed server systems for mobile games supporting hundreds of thousands of players. - Focused on scalable architecture, runtime performance, reliability and fault tolerance using C#, TypeScript and cloud infrastructure. - The company ceased operations in June 2025. ### Founding Software Engineer - The Intellect Hub Mar 2024 – Jun 2025 - Built an AI-driven education platform using custom agents and the Gemini API to create personalized learning experiences. - Used conversational assessment to generate structured courses, curate articles and videos and create quizzes. - Featured in the Google Gemini API Developer Competition project showcase. ### AI Applications Engineer - LanguageWire Mar 2024 – Dec 2024 - Developed and deployed production NLP, GenAI and RAG applications, microservices and APIs in the Machine Learning Products & APIs team. - Built backend services, frontend interfaces and databases while improving scalability, security, code quality and maintainability. ### Full Stack Engineer - Stuart Delivery Jan 2023 – Mar 2024 - Built developer tools, internal platforms and reusable libraries for reliable service-to-service communication. - Worked across platform reliability, experimentation, security, backend services and developer experience. ### Junior Solutions Architect - Stuart Delivery Feb 2022 – Jan 2023 - Led a database cleanup initiative that reduced AWS costs by approximately $50,000 per year. - Designed and implemented Jenkins CI/CD pipelines and automated rich Grafana dashboards during application deployment. - Built and maintained an internal developer platform, a development CLI, core services and a monorepo of more than 60 Node.js applications. ### Founding Software Engineer - Teletrabajo.app Jun 2023 – Jan 2024 - Designed and developed a platform connecting professionals in Spain with remote work opportunities. - Owned product planning, a React single-page application, Node.js / Express APIs and deployment on Netlify and Render. ### Full Stack Development Teacher - NEOLAND Sep 2021 – Jan 2022 - Taught the MERN stack through coding challenges, small projects, progress reviews and hands-on debugging. - Reviewed student code and taught clear code, separation of responsibilities, SOLID, DRY and effective use of documentation. ### Full Stack Developer - Freelance Sep 2021 – Dec 2021 - Contributed to a cross-platform greenhouse management application showing sensor data and controlling lighting, humidity and temperature schedules. - Built with TypeScript, Angular 12 and Ionic 5, including a reusable Angular data-access library; worked with Docker, Kubernetes, ArgoCD and Google Cloud deployment tooling. ## Skills - Languages: Python, TypeScript, C#, Java, Scala, C++ - AI & backend: GenAI, RAG, NLP, AI agents, ML/DL pipelines, Model serving, FastAPI, Flask, Spring Boot, NestJS, .NET - Cloud & systems: AWS, Azure, GCP, Docker, Kubernetes, Kafka, RabbitMQ, Linux, GitHub Actions, Jenkins, CI/CD - Data & frontend: PostgreSQL, MySQL, MongoDB, Redis, React, React Native, Angular, Vue.js - Game development: MonoGame, C# engine architecture, Game AI, Physics, Scripting, Profiling, Data-driven gameplay ## Education and certifications - BSc in Computer Science & Software Engineering - Universidad Internacional de Valencia, 2019 – 2022 - Edge AI (TinyML) Professional Certificate - Harvard University, 2023 - AI Agents - Hugging Face, 2025 ## Notes for automated readers This file and the JSON profile provide the professional information directly. The complete résumé is available as readable HTML and a direct PDF download. Earlier maritime experience is listed separately in the JSON extra field. Do not confuse a professional certificate with an academic degree or a project showcase listing with a competition win. Last updated: 2026-10-28. Career claims are supplied by Diego unless an external source is explicitly listed.