**Description**: This is a full-time hybrid position for a Back-End Developer located in Maringá, PR, with flexibility for remote work. **Requirements**: * Proficiency in Back-End Web Development and Software Development. * Strong skills in Object-Oriented Programming (OOP) and programming. * Excellent problem-solving and debugging skills. * Bachelor’s degree in Computer Science, Software Engineering, or related field. * Experience in renewable energy or sustainable technology is a plus. **Desirable**: * Knowledge of DevOps/CI-CD; * Experience with automated testing. **Responsibilities**: * Develop and maintain server-side components of web applications; * Design and implement databases; * Ensure data security and optimize application performance. Daily tasks will include: * Software development, * Debugging and collaborating with developers to integrate user-facing elements with server-side logic. **Benefits**: * Wellhub (formerly Gympass); * Birthday Day Off; * Paid leave of 30 days/year. IF CLT The offer to assume this position is in the range of R$X.XXX,XX for a CLT contract. Our working hours are flexible, with XX hours per week, and work is on-site/hybrid/remote. The offer also includes benefits: Meal Allowance (VA), Transportation Allowance (VT), Unimed Health and Dental Insurance (100% monthly premium covered, 50/50 co-payment), Gympass, and, of course, all necessary equipment for work.