Master Full-Stack Developer (AI, BI & Digital Product Improvement)

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Master Full-Stack Developer (AI, BI & Digital Product Improvement) based in Brazil.

This is a hands-on, highly technical role combining full-stack development, business intelligence, and advanced AI capabilities. You will work across an existing digital platform, contributing to both product evolution and technical improvements. A primary focus will be the end-to-end development and maintenance of Power BI reports and dashboards. You will also contribute to frontend and backend enhancements, UX improvements, and cloud-based integrations. The role offers significant exposure to modern AI development, including evaluation, fine-tuning, prompt engineering, and model selection. You will collaborate closely with technical and business stakeholders, challenging assumptions and shaping innovative digital solutions. This is an opportunity for a proactive engineer who wants to go beyond feature delivery and actively influence product quality, architecture, and future capabilities.

Accountabilities:: Develop, maintain, and continuously improve Power BI reports and dashboards , owning the end-to-end delivery and ensuring reliable, actionable data visualization.

Support an existing web platform through targeted fixes, system enhancements, UX improvements, and self-contained product epics.

Contribute to frontend development using TypeScript, React 18, TanStack Query, and Material UI (MUI) , with a strong focus on usability and user experience.

Develop and maintain backend services using Java 17 and Spring Boot 3 , ensuring maintainability, scalability, and performance.

Work with MySQL 8 and contribute to data-related integrations and application functionality.

Support cloud-based solutions and infrastructure using Google Cloud Platform , including Cloud Run, App Engine, Cloud SQL, Docker, and Firebase Authentication.

Design and implement more complex cloud integrations, including solutions supporting real-time collaboration and cross-platform functionality.

Act as a hands-on technical specialist in advanced AI solutions, going beyond basic LLM-powered chat experiences.

Perform AI lifecycle activities such as model evaluation, fine-tuning, prompt engineering, model selection, and iterative deployment .

Participate in the ideation, experimentation, and development of Proofs of Concept (PoCs) for emerging AI use cases.

Proactively identify opportunities to improve digital products, processes, architecture, and user experiences.

Serve as a technical thought partner by challenging assumptions, evaluating solution trade-offs, and helping shape the future direction of digital products.

Requirements:

Proven experience as a Full-Stack Developer , with a strong track record of delivering complete and successful software projects.

Solid understanding of application architecture , including how enterprise components interact and integrate across frontend, backend, databases, cloud infrastructure, and external services.

Mandatory professional experience with Power BI , including the development and maintenance of reports and dashboards.

Strong technical proficiency across the Java/React/GCP ecosystem , with the ability to work comfortably across the full technology stack.

Experience with TypeScript, React 18, TanStack Query, and Material UI (MUI) .

Experience with Java 17, Spring Boot 3, and MySQL 8 .

Knowledge of Google Cloud Platform , particularly Cloud Run, App Engine, and Cloud SQL, as well as Docker and Firebase Authentication.

Previous hands-on experience with AI/ML projects that progressed beyond experimentation or prototyping into structured evaluation and iterative deployment.

Practical knowledge of AI development techniques such as evaluations, fine-tuning, prompt engineering, and model selection .

Strong analytical and problem-solving abilities, with the curiosity to understand end-to-end processes rather than focusing only on isolated development tasks.

UX sensitivity and user empathy, with the ability to translate technical capabilities into intuitive digital experiences.

Proactive and strategic mindset, comfortable challenging technical assumptions and contributing ideas beyond assigned requirements.

Strong collaboration and communication skills, particularly when working with technical and business stakeholders.

Benefits:

Health and dental insurance.

Meal and food allowance.

Childcare assistance.

Extended parental leave.

Partnerships with gyms and health and wellness professionals through Wellhub (Gympass) and TotalPass.

Profit Sharing and Results Participation (PLR).

Life insurance.

Continuous learning platform and professional development opportunities.

Discount club.

Free online platform dedicated to physical, mental, and overall well-being.

Pregnancy and responsible parenting course.

Partnerships with online learning platforms.

Language learning platform.

Additional benefits and employee programs.

Inclusive environment with dedicated Health & Well-being resources, inclusion specialists, and affinity groups.

For professionals residing in the Campinas Metropolitan Region, office attendance may be required in accordance with the applicable workplace policy.

How Jobgether works: We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team. We appreciate your interest and wish you the best!  Why Apply Through Jobgether?    Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.     #LI-CL1