Leonam Loureiro
I'm Leonam Loureiro, a Backend API Developer and Full-Stack Engineer with 10+ years of experience building scalable backends, web applications, and AI-driven systems. js), and cloud platforms (AWS, Azure, GCP).
About
I’m Leonam Loureiro, a Backend API Developer and Full-Stack Engineer with 10+ years of experience building scalable backends, web applications, and AI-driven systems. I work across PHP (Zend, CodeIgniter, Laravel), Python (Django, Flask, FastAPI), JavaScript (React.js, Vue.js, Next.js, Node.js), and cloud platforms (AWS, Azure, GCP). I also specialize in AI agents, LLM integrations, and cloud-native architectures to deliver secure, high-performance solutions. My background includes SAP S/4HANA and SAP Business Technology Platform integration, with a focus on optimizing business processes through AI and ML.
I thrive in cross-functional teams, designing robust APIs for LLM systems such as OpenAI, Gemini, Claude, and Gemma, and implementing DevOps practices, CI/CD pipelines, and security-first approaches. I enjoy turning complex requirements into scalable architectures that enable innovative AI-driven capabilities while maintaining reliability and performance.
- 8 years' experience
- Joined December 2025
Industry experience
- Software & Internet
- Professional Services
Work experience
Led frontend development for AI-powered web applications using React and Next.js; implemented LangChain and Retrieval-Augmented Generation pipelines; designed and deployed custom Generative AI systems using LLM models (including OpenAI) and integrating Vector Store and Embeddings to meet diverse client needs; created intelligent pipelines and automated workflows to optimize processes and reduce manual tasks.
Implemented responsive UI components with Tailwind CSS; developed backend services in Node.js (TypeScript); implemented GraphQL APIs to streamline user queries and improve relevance; engineered a CI/CD pipeline using Google Cloud Platform and Kubernetes, reducing deployment time by 65%.
Developed five full-scale projects including eCommerce platforms, booking systems, SaaS solutions, and mobile applications using Django, Flask, Node.js, and React; designed and implemented 300+ RESTful APIs; delivered end-to-end e-commerce solutions on Shopify and Tiendanube; improved UX and conversion; integrated third-party services and APIs; provided ongoing admin support and maintenance.
Education
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