Job Summary: We are seeking a Mid-Level Software Developer with experience in both front-end and back-end development to build end-to-end solutions and contribute to technical evolution. Key Highlights: 1. Work on key projects and contribute to technical advancement. 2. Develop and maintain complete applications, including front-end, back-end, and APIs. 3. Collaborate with cross-functional teams to ensure aligned deliveries. **Job Description** We are looking for a **Mid-Level Software Developer** to join our technology team. We seek a professional with solid experience in front-end and back-end development, capable of building end-to-end solutions while adhering to quality standards, best practices, and guidance from more experienced professionals. The candidate will work on key projects, contributing to the technical evolution of applications and the team. **Responsibilities** * Develop and maintain complete applications, including front-end, back-end, APIs, integrations, and databases. * Support the definition and implementation of scalable and secure architectures under the guidance of more experienced professionals. * Participate in code reviews to enhance code quality and standardization. * Implement continuous improvements to features, processes, and components. * Collaborate with Product Owners, UX/UI designers, QA engineers, and DevOps specialists to ensure aligned deliveries. * Write clean, testable, and sustainable code, applying principles such as SOLID and development best practices. * Assist in monitoring and supporting applications in production. * Participate in automating build, testing, and deployment processes. * Keep technical documentation up to date. **Duties** * Develop new features according to technical and business requirements. * Perform corrective and evolutionary maintenance on existing systems. * Create and maintain unit and integration tests. * Support incident resolution and technical issue troubleshooting. * Collaborate with the team on continuous application improvement. * Follow architectural standards and technical guidelines defined by the engineering team. **Other Requirements and Qualifications, Tools, Skills, Courses, and Certifications** **Front-end** * Experience with at least one framework: + React, Angular, or Vue.js * Knowledge of: + JavaScript / TypeScript + State management (Redux, Zustand, NgRx, Vuex) + Reusable components and Design Systems + Testing (Jest, Testing Library, Cypress) + Best practices for performance and accessibility + Integration with REST and GraphQL APIs **Back-end** * Experience with at least one stack: + Node.js (Express, NestJS) + Java (Spring Boot) + .NET Core + Python (Django, FastAPI) + Go * Knowledge of: + Development of REST and GraphQL APIs + Basic understanding of microservices architecture + Authentication and authorization (OAuth2, JWT) + Unit and integration testing + Messaging systems (Kafka, RabbitMQ, SQS – bonus) **Databases** * Experience with: + PostgreSQL, MySQL, SQL Server + MongoDB, Redis, or DynamoDB * Knowledge of data modeling and query optimization **Infrastructure and DevOps** * Familiarity with Cloud platforms (AWS, Azure, or GCP) * Knowledge of Docker * Experience with CI/CD pipelines (GitHub Actions, GitLab CI, Jenkins, or similar) * Familiarity with monitoring tools (Grafana, NewRelic, DataDog – bonus) **Methodologies and Soft Skills** * Knowledge of Agile methodologies (Scrum, Kanban) * Strong communication and teamwork skills * Proactivity and commitment to continuous learning * Organization and accountability regarding deadlines **Preferred Qualifications** * Prior experience in medium- or large-scale projects * Participation in technical improvement initiatives * Cloud or development certifications * Experience with Clean Architecture or DDD **MJV Benefits:** TotalPass\Wellhub; ‍‍‍‍ Group life insurance; Meal/Voucher allowance; Health and dental plan – Bradesco; Training initiatives: lectures, forums, knowledge-sharing sessions, and discussions related to our business. We stay constantly connected to learn more, together; \+MJVer Program: an internal referral program where you refer a colleague to join us, and if the match is successful, you receive a reward. Partnerships: want discounts? We have a Workplace group where we share partnerships with educational institutions, language schools, gyms, restaurants, products, and other services;