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Lead Full Stack Engineer at AOA. About the Job . AOA is looking for an experienced Lead Full Stack Engineer who thrives in solving complex backend challenges and delivering high-quality digital products. This role is ideal for someone who is passionate about engineering excellence, scalable architectures, and high-performance solutions while also contributing to frontend development.. The Lead Full Stack Engineer will play a key role in architecting and developing secure SaaS platforms and eCommerce storefronts, primarily within the Shopify Plus and Headless Commerce ecosystem. They will collaborate closely with designers, strategists, and other engineers to build and enhance web applications from scratch that balance functionality, speed, and scalability. Responsibilities will include architecting and implementing full-stack solutions, integrating third-party services, optimizing performance, and ensuring code quality through best development practices. This role requires expertise in both frontend (React, Next.js) and backend (Node.js, AWS, and APIs) technologies.. The ideal Lead Full Stack Engineer for AOA is a self-motivated technical leader, critical thinker, and detail-oriented developer. They should be comfortable working in an agile environment, collaborating with cross-functional teams, and mentoring other engineers. Above all, they should be passionate about pushing the boundaries of what’s possible and driving innovation through technology.. About Us . AOA is a dynamic and innovative digital agency that specializes in creating cutting-edge solutions for a diverse clientele. We are at the forefront of technology, delivering high-impact products for eCommerce and SaaS clientele. We are seeking a talented Lead Full Stack Engineer to join our team and play a pivotal role in shaping the future of our client's digital products.. Every employee has a direct, measurable impact on the success of the company, with plenty of opportunities for career growth. We are looking for team members who not only love to create but thrive off of taking ownership and responsibility in the company’s success. . Responsibilities. Key Outcome: deliver high-quality solutions that AOA is known for with predictability and efficiency. . Lead end-to-end development of web applications, contributing to both frontend and backend code. . Design and implement scalable architectures using NodeJS and AWS ecosystem. . Develop and deploy performant frontend applications using React and Next.js. . . Work closely with clients and project managers to understand project requirements and translate them into technical solutions. . Provide technical expertise during client meetings, offering insights into the development process and potential enhancements. . Efficiently communicate project estimates and lead planning poker for user stories. . Work within an agile development environment, participating in sprint planning, code reviews, and ensuring timely delivery of features.. . Stay abreast of emerging technologies and industry trends, evaluating their potential application in our development process.. . . Bachelor’s degree in a related field. . 5+ years of experience as a Full Stack Engineer, with a focus on both backend and frontend development. . Strong proficiency in React and frontend frameworks. . Strong proficiency in NodeJS and AWS infrastructure. . Expertise in building complex systems, microservices, and integration with third-party APIs. . Strong Familiarity with agile development methodologies and tools. . Excellent communication skills, with the ability to articulate technical concepts to both technical and non-technical stakeholders. . Leadership skills with a proactive approach to collaboration and team problem-solving. . Company Location: Brazil.