
Juan
From Uruguay (UTC-3)
15 years of commercial experience
Lemon.io stats
2
projects done623
hours worked1
ongoing projectJuan – AWS, React, Python
Juan is a Full-Stack Engineer specializing in Python and React. He has a Computer Science degree with an AI focus and experience in startups and larger companies. He has strong backend fundamentals, including Python, system design, and SQL, alongside a background in academia as a Teaching Assistant and Researcher. Juan communicates ideas confidently and prefers working on innovative projects, particularly AI-driven tools that empower users!
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Let’s get started today!Experience Highlights
Senior Engineer
A Chatbase AI solution that automates sales inquiries and support workflows for manufacturing businesses, enabling real-time quote generation, lead qualification, and 24/7 customer service without expanding human teams.
- Built the backend from the ground up;
- Designed and implemented AWS infrastructure and CI/CD pipelines from scratch;
- Collaborated closely with frontend developers and contributed to task planning activities.
Senior Engineer
A global fintech company specializing in modern, ethical digital debt collection solutions. Founded in Australia in 2016, it uses AI-driven technology to personalize debt recovery while prioritizing customer respect and compliance. Juan implemented AI-driven translation scripts to rapidly and massively localize their website in over five countries, integrating Hugo’s native i18n switching, LLM-driven batch translation with confidence-based review, RTL layout adjustments, dynamic regional currency formatting, and embedded compliance phrasing.
- Set up project and local execution environment, including essential fixes;
- Scripted enumeration of Markdown and JSON assets for localization using regex filtering;
- Extracted hard-coded strings from templates into Hugo’s i18n framework for standardized translations;
- Reviewed redirects and routing logic to ensure accurate language-specific URL delivery;
- Built AI-driven translation scripts to translate and optimize all content.
Senior Full-Stack Developer
An AI-powered web app to accelerate the learning process of university students. It helps students to write theses and articles related to different topics.
- Implemented the entire back-end and front-end logic (excluding visuals) using Next.js;
- Developed all AI features integrating the Gemini API (Google's LLMs);
- Participated in the UI/UX discussions;
- Presented multiple ideas to the client, some of which were later transformed into features;
- Managed infrastructure (Vercel + GCP) and version control (Github).
Senior Full-Stack Developer
An AI-powered news aggregator that leverages vector embeddings and LLMs to semantically relate and consolidate news from multiple sources, providing a comprehensive and pluralistic view of events.
- Completely built the AI engine that powers the platform using Python, Shell scripts, Local Ollama, Flask, etc;
- Actively participated in the FE development, mainly in the FE logic (Next.js, React);
- Set up the infra in AWS and Vercel, Docker images, and the CI/CD logic by using Github actions;
- Proposed the idea and worked on it before getting down to work.
Senior Full-Stack Developer
An R&D project demonstrating the power of early LLMs (GPT-3) in supporting the legal department's internal tasks. It enhanced the review process for various legal documents, highlighting critical issues (red-flagging) and helping the legal team save significant time.
- Presented the idea;
- Collaborated with the legal team to define the necessary features;
- Implement the prototype.
Senior Back-End Developer
A fintech startup that develops a platform providing financing for exporting SMBs in LATAM. It is revolutionizing access to international trade, with a team of experts working tirelessly to provide the best tools and financing solutions for trading companies without access.
- Designed the back-end architecture;
- Implemented a significant portion of the back-end foundations;
- Co-designed the CI/CD pipeline with the DevOps team;
- Integrated various financial data providers;
- Developed the unit test suite.
Senior Full-Stack Developer
An omnichannel contact center that provides easy-to-use communication capabilities (telephony, WhatsApp, email, etc.) for many companies across LATAM.
- Implemented the core backend and many features of the web platform;
- Maintained legacy code (PHP, Python 2.x);
- Discussed and planned feature implementations;
- Managed versioning of the platform (Jenkins scripts, git support, etc);
- Assisted with front-end development when the team was overwhelmed.