Greenn Company

Backend Engineer

• Desenvolver, testar e manter serviços backend de alta disponibilidade e tolerância a falhas no ecossistema de pagamentos
• Participar ativamente de decisões arquiteturais, propondo soluções que equilibrem qualidade técnica e pragmatismo de entrega
• Colaborar com tech leads na construção de um planejamento robusto de entrega de funcionalidades, pensando em longo prazo e boas práticas
• Garantir qualidade através de testes automatizados, code reviews criteriosos e práticas de CI/CD
• Garantir que as entregas feitas sejam monitoradas de maneira automática e transparente tendo controle assim do que foi entregue.
• Construir e evoluir APIs RESTful internas e externas com foco em segurança e experiência do desenvolvedor
• Contribuir para a cultura de engenharia: documentação técnica, ADRs, pair programming e mentoria de devs menos experientes
• Participar de rotações de on-call e resposta a incidentes quando necessário

Desenvolvedor Back-end Pleno

• Technical and architectural leadership
• Define and evolve the architecture of the backend services within the payments ecosystem, ensuring scalability, resilience and maintainability
• Lead high-impact technical decisions — trade-offs, technology choices, migration and refactoring strategies
• Create and maintain ADRs (Architecture Decision Records) and technical documentation that serve as the team's single source of truth
• Ensure adherence to coding standards, best practices and engineering processes (code review, CI/CD, testing, observability)
• People management and team development
• Technically lead 4 to 8 engineers, acting as a reference and mentor
• Conduct 1:1s, provide constructive feedback and create individual development plans
• Actively participate in hiring processes: defining profiles, technical interviews and candidate evaluation
• Promote a psychologically safe environment where the team feels comfortable proposing, questioning and learning from mistakes
• Cross-functional collaboration and communication
• Interface between the technical team and product, business and operations stakeholders
• Translate technical complexity into accessible language for non-technical audiences
• Participate in sprint planning, refinement and agile ceremonies, ensuring estimates reflect technical reality
• Collaborate with other Tech Leads and engineering leadership to align standards, share lessons learned and resolve dependencies between squads
• Strategic hands-on
• Remain hands-on with code — not most of the time, but on critical areas: proofs of concept, architectural reviews and debugging complex incidents
• Lead and facilitate Event Storming, domain modeling and system design sessions with the team
• Ensure technical debt is made visible, prioritized and addressed in a sustainable manner

Tech Lead – Backend

• Design, develop, test and maintain highly available, fault-tolerant backend services within the payments ecosystem
• Actively participate in architectural decisions, proposing solutions that balance technical quality and delivery pragmatism
• Collaborate with Product Managers, Design and business teams to translate requirements into robust technical solutions
• Ensure quality through automated tests, thorough code reviews and CI/CD best practices
• Monitor and optimize production system performance, identify bottlenecks and propose continuous improvements
• Build and evolve internal and external RESTful APIs with a focus on security and developer experience
• Contribute to engineering culture: technical documentation, ADRs, pair programming and mentoring of less experienced developers
• Participate in on-call rotations and incident response when necessary

Senior Back-end Developer

Software Engineer

• Develop front-end features for applications using Vue.js and TypeScript.
• Develop back-end solutions in PHP with Laravel, focusing on efficiency and scalability.
• Perform maintenance and enhancement of existing systems built with PHP and Laravel.
• Participate in MySQL database management and optimization.
• Integrate systems with asynchronous messaging, such as RabbitMQ, to improve data flows.
• Implement in-memory caching solutions with Redis.
• Work closely with multidisciplinary teams (UI/UX, QA, DevOps) to define requirements and improve solution delivery.
• Engage in the code review process to ensure development quality and effectiveness.

Developer

QA Engineer

• Collaborate with the development team to understand technical and business requirements and translate them into effective testing strategies.
• Develop, maintain and evolve automated tests, especially using TypeScript- or JavaScript-based tools (such as Playwright, Jest, Mocha, Cypress, among others).
• Perform manual and functional testing when necessary, particularly for new flows or sensitive validations.
• Support the setup and maintenance of testing environments and ensure QA workflows are integrated into the continuous development process (CI/CD).
• Identify, report and track bugs, ensuring traceability of issues through to resolution.
• Participate in technical reviews and support the creation of acceptance criteria and test scenarios from the start of the development cycle.
• Assist in creating and maintaining test documentation, facilitating understanding of QA flows and coverage for other team members.