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Guilherme Girardi

@guilhermegirardi

Software Engineer at Cielo using Claude agent workflows to deliver e-commerce features and resolve support tickets.

At Cielo, I develop front-end features for its e-commerce portal and use a Claude-based multi-agent system to implement features and resolve support tickets. I extend the orchestrator and specialized agents with custom skills and instructions, connecting them to Jira, GitHub, and Figma via MCP.

At Ardanis, I developed product features with React and TypeScript and contributed to code review and CI practices in an international Agile team. Earlier, I led end-to-end development of Easy Dish’s multi-platform food ordering app in React.

Experience

Work history, roles, and key accomplishments

Current

Software Engineer

Current

Cielo

Mar 2024 - Present (2 years 7 months)

Develops front-end features for Cielo's e-commerce portal and operates a multi-agent AI system built on Claude, integrating with Jira, GitHub, and Figma via MCP to accelerate feature delivery and issue resolution.

React TypeScript Claude MCP Jira GitHub Figma Multi agent orchestration Agent Skills and Instructions

Front-End Developer

Ardanis

Dec 2022 - Jun 2023 (6 months)

Developed, tested, and maintained features on a complex product using React and TypeScript, applying the Container Component pattern and custom hooks. Collaborated in an international Agile team via Azure DevOps, maintaining rigorous code review and CI practices.

React TypeScript Container Presentation Pattern Custom Hooks Azure DevOps Code Review CI CD Agile

Junior Front-End Developer

Ardanis

Jul 2021 - Dec 2022 (1 year 5 months)

Ensured cross-browser, cross-device compatibility and applied performance optimization techniques. Wrote unit and integration tests with Jest and React Testing Library, mocking dependencies and validating component behavior.

React TypeScript Jest React Testing Library Performance Optimization cross browser compatibility