OnePay
Software Engineer / AI Developer — Contract, BairesDev
Technologies: Node.js, NestJS, Next.js, React, TypeScript, Jest, Cypress, Cursor, GitHub Copilot, Claude Code, ChatGPT, Gemini Code Assist, Codex, AI-Assisted Development, CI/CD Automation
- Engineered backend services and REST APIs using Node.js, TypeScript, and NestJS for a fintech platform.
- Developed responsive web application features using React and Next.js, improving usability, maintainability, and frontend consistency.
- Designed and implemented AI-powered application features using LLM provider APIs and agentic workflows.
- Integrated AI capabilities using function calling, structured outputs, prompt engineering, and retrieval-augmented generation.
- Built reusable AI integration layers for intelligent application workflows.
- Leveraged Cursor, Claude Code, GitHub Copilot, ChatGPT, Gemini Code Assist, and Codex to accelerate implementation, refactoring, debugging, security analysis, documentation, and testing.
- Applied AI-driven code review, architecture analysis, and automated test generation to improve software quality and delivery velocity.
- Improved CI/CD and release workflows through analysis of build processes, deployment configuration, pipeline failures, and automation opportunities.
- Collaborated with engineering, product, and quality assurance teams on technical planning, code reviews, testing, documentation, and production deployments.