Junior Full Stack Developer responsible for developing AI and web products at Comerc Energia. Engage in backend and frontend tasks with a focus on innovative energy solutions.
Responsibilities
Develop and evolve internal products focused on applied AI and websites/portals, working on interfaces, user journeys, and automations.
Build and maintain APIs and services in Java, ensuring organization, logging, error handling, and maintainability.
Develop modern front-end (e.g., React/Next.js) including pages, components, forms, tables, filters, and API integration.
Work with SQL for queries, investigations, and validation of product data.
Create and operate crawlers and data collectors, following best practices such as respecting robots.txt, rate limit control, retries, normalization, data persistence, logging, and traceability.
Integrate generative AI into products (API calls, prompt design, response formatting, and implementation of basic guardrails).
Support retrieval-augmented generation (RAG) initiatives, connecting knowledge bases, improving relevance, and evaluating response quality.
Participate in the engineering workflow, including Git versioning, pull requests, code reviews, basic testing, and concise documentation.
Requirements
Bachelor's degree in Computer Science, Engineering, Information Systems, Systems Analysis and Development, Data Science, or related fields.
Previous experience in backend development with Java (Spring Boot preferred) and building/consuming REST APIs.
Knowledge of SQL, including JOINs, aggregations, filters, and data validation.
Experience with modern frontend development using React, Vue, or Angular (React + Next.js preferred).
Experience with Git/GitHub for version control, using branches, commits, and pull requests.
Knowledge in creating and operating crawlers and data collection, following scraping best practices.
Experience or practical exposure to Generative AI, including API integration and basic prompt usage.
Benefits
Join our team and be part of Brazil's energy transition journey! ⚡
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