Ranielli Montagna — Software Engineer at Lemon Energia
I turn business and operational context into reliable web and mobile products, APIs, automation and AI-enabled workflows.
Now — Lemon Energia. I work at the intersection of the Center of Excellence and business areas, translating operational needs into clearer processes, digital solutions and reliable automation. I use AI pragmatically when it reduces repetitive work, organizes context or supports better decisions.
Proven foundation — Luizalabs. I contributed to inventory and logistics workflows across 1,000+ Magalu stores and the daily work of 1,000+ stock clerks. I also led frontend initiatives in SaaS products, created a Design System adopted across products, established quality practices and mentored developers.
How I approach problems. With 5+ years in software engineering, I connect business context, product delivery, LLMs, automation, agents and Model Context Protocol workflows to make operations more efficient and decisions clearer.
- Business systems — discovery, process clarity and technology decisions tied to how teams actually operate.
- AI & automation — LLM-enabled workflows, agents, custom tools and decision support with useful guardrails.
- Product engineering — accessible web and mobile products, REST APIs, integrations and dependable delivery.
Product engineering: React, React Native, TypeScript, Next.js and Tailwind CSS.
Systems & delivery: Node.js, REST APIs, PostgreSQL, Docker, CI/CD and product-quality practices.
AI & automation: LLM workflows, agents, Model Context Protocol and developer tooling.
Lemon Energia — Software Engineer
Engineering at the bridge between the Center of Excellence and business areas: digital solutions, automation and applied AI.
Luizalabs — Software Engineer
Web and mobile products, REST APIs, integrations and micro frontends for national retail operations.
Smarten — Front-end Tech Lead
Frontend architecture, Design System, CI/CD, monitoring, mentoring and product delivery.
SBSistemas — Front-end Developer
React, Electron, TypeScript, reusable components and interface engineering practices.
These visuals track public GitHub activity. Private production work and business impact are not fully represented here.