We are Qeevo, an Aspiration Tech ecosystem that connects education, personal growth, and real consumption. Our products impact millions of people every year, helping students find affordable training opportunities and unlocking paths for continuous development. We are looking for a Senior Backend Developer with deep expertise in PHP and JavaScript, capable of building high-performance, secure, and scalable solutions from scratch—without relying exclusively on frameworks or ready-made tools. This role will be strategic in evolving Qeevo's backend architecture, ensuring flexibility, efficiency, and standardization across brands. ### **RESPONSIBILITIES** * Develop and maintain scalable, high-performance, and secure backend services using PHP and JavaScript (native Node.js). * Design and implement framework-agnostic, reusable, and independent solutions. * Work on defining and evolving service-oriented architectures and integrations between internal and external systems. * Ensure best practices in security, testing, and performance from the initial solution design. * Support and mentor other developers, promoting technical excellence within the team. * Collaborate with product, data, and frontend teams to deliver complete and integrated solutions. * **Actively contribute to the evolution of Qeevo's core platform.** ### **REQUIREMENTS** * Strong proficiency in PHP and JavaScript (native Node.js, without reliance on frameworks). * Solid foundation in data structures, algorithms, programming paradigms, and software engineering best practices. * Experience with RESTful architectures, internal and external APIs, authentication, and authorization. * Strong understanding of relational and non-relational databases (MySQL, PostgreSQL, Redis, etc.). * Knowledge of messaging systems (RabbitMQ, Kafka, or similar) and caching. * Ability to design technical solutions from scratch, prioritizing simplicity, performance, and maintainability. ### **PREFERRED QUALIFICATIONS** * Experience in high-scale and high-availability environments. * Knowledge of infrastructure and DevOps (Docker, Kubernetes, Terraform, etc.). * Familiarity with distributed, event\-driven, or serverless architectures. * **Experience designing public APIs and standards such as OpenAPI/Swagger.** * **Open source contributions or strong involvement in technical communities.** ### **BENEFITS** * Health insurance (Bradesco, Policlin, or Santa Casa) * Dental plan (Uniodonto) * On-site restaurant at Quero with delicious lunch * Education Support: exemption from pre-enrollment fees for Quero Bolsa courses, 100% discount on UFBRA distance learning undergraduate programs, and access to the Allevo development platform. * Discounts on the New Value platform, with over 25 thousand products and 600 active offers * Profit Sharing (PLR) based on individual and company goals * Psychotherapy support * Birthday day off * Wellhub * Extended maternity leave * Extended paternity leave