We are looking for a highly skilled **Full Stack Engineer**, with a systemic vision and a focus on performance and scalability, to develop modern web applications. This professional will be responsible for building end\-to\-end solutions—from architecture design, API implementation, and cloud service integration—to developing intuitive and responsive user interfaces. This role is key to evolving our product and sustaining our platform, ensuring high\-quality code, mature CI/CD processes, and production environment quality. **Responsibilities and Duties** **Development \& Architecture** * Develop complete web applications, including **frontend (React/Vite)** and **backend (Python/FastAPI or Node.js)**. * Design and implement REST and GraphQL APIs with a focus on performance and best practices. * Create reusable components and responsive interfaces with modern UI. * Ensure scalable, secure, and well\-structured architecture. **Integrations \& Distributed Systems** * Implement integrations with relational and non\-relational databases (PostgreSQL, MongoDB). * Work with messaging systems (Kafka, RabbitMQ or Pub/Sub) when required. * Integrate external systems via REST APIs, Webhooks, and cloud services. **DevOps \& CI/CD** * Participate in creating and maintaining CI/CD pipelines (GitHub Actions). * Handle application build and deployment on **Kubernetes**, including ConfigMaps, Secrets, Deployments, and Ingress. * Monitor logs, metrics, and observability (Grafana, Prometheus, Loki, CloudWatch). **Quality \& Maintainability** Write automated tests (unit and integration). * Maintain high code quality standards through code reviews. * Document APIs, processes, and application architecture. **Requirements and Qualifications** **Frontend** * Advanced JavaScript/TypeScript * React.js (Hooks, Context API) * Vite, Zustand/Redux, Styled Components or Tailwind * Consumption of REST/GraphQL APIs * Best practices in accessibility and responsiveness **Backend** * Python (FastAPI) or Node.js (Express/NestJS) * In\-depth knowledge of REST APIs * Authentication and authorization (JWT, OAuth2\) * Building scalable and asynchronous services **Databases** * PostgreSQL (DDL, DML, complex queries) * MongoDB * Data modeling and query optimization **DevOps / Cloud** * Docker \+ Docker Compose * Kubernetes (deploy, secrets, ingress, healthchecks) * GitHub Actions (CI/CD pipelines) * Cloud (GCP, AWS or Azure) — desirable * Version control with Git and GitFlow **Education** * Degree in Computer Science, Software Engineering, Information Systems or equivalent. * Cloud certifications are a plus. **Nice to Have:** * Messaging system knowledge * Experience with microservices architecture * Experience with E2E testing * Knowledge of caching techniques **Behavioral Competencies** * Strong analytical ability and problem\-solving focus; * Proactivity and autonomy; * Clear and objective communication; * Organization and attention to detail; * Ownership mindset and commitment to results; * Collaboration with multidisciplinary teams (Data, DevOps, Product). **Additional Information** Comprehensive benefits package: Company laptop for candidates based in SP, or infrastructure allowance (for use of personal laptop) for those outside SP. 13th salary; 30\-day vacation \+ 1/3 bonus of the 13th salary (benefit granted after 1 year of employment); SulAmérica Health Insurance (co\-payment only if used) Life Insurance; Meal Allowance on Flash Card; Credit/Debit; usable at food\-related businesses with CNPJ (e.g., restaurants, supermarkets, food delivery apps) Birthday benefit: Day\-off \+ extra credit on Flash card; SulAmérica Dental Insurance — optional plan Fitness incentive — TotalPass Education incentive — monthly reimbursement for courses and training (subject to internal policy) Office with a pleasant environment and an in\-house bistro\-style restaurant (available even for remote roles — you’re always welcome). #### **Just a Little Data. Or a Whole Lot of It.** #### **Volume isn’t what matters most — it’s how we use information. At Just a Little Data, our mission is precisely this: helping companies — whether multinational corporations or local businesses — unlock the knowledge hidden within their data.** \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ To achieve this, we rely not only on a team of specialists in business, technology, communications, and other fields, but also on the full structure and support of the **B\&Partners** group, of which we are part. We aim to revolutionize corporate decision\-making and make data science more accessible — turning it into a competitive advantage across diverse industries. Our culture is startup\-like, with constant challenges, projects, and development opportunities. We value creativity, unique professional backgrounds, employee wellbeing, and autonomy. After all, people build the company — not the other way around. If you resonate with this idea, explore our open positions — one of them might be perfect for you. And your profile might be exactly what we’re looking for. Ready to apply and see if it’s a match? ### **Mission** Solve problems and guide operations using technology and data science in the most practical and objective way possible — aiming to improve outcomes for our clients and partners. ### **Our Values** **Curiosity:** there’s always room for improvement; **Deep expertise** in what we do; **Commitment** and **transparency** in relationships (B2B and B2C); **Accuracy** and precision in delivery. ### **Diversity** At Just, respecting each individual’s identity and values is not just fundamental — it’s mandatory. We believe that having people from all backgrounds on our team is exactly what we need to grow in every sense. Therefore, diverse perspectives, experiences, and ways of being are and will always be welcome in our house. As part of the **group**, we are signatories of the **UN Global Compact**, and lead two important initiatives: **Elas Lideram 2030** and **Raça é Prioridade**. This translates into clear goals: **50% female leadership** and **50% Black leadership positions**, reinforcing our commitment to real and ongoing equity. We are a technology company with a balance we’re proud of! Here, **women are the majority**, proving that innovation and diversity go hand in hand. Let’s collaborate and make the charts below increasingly **less** standardized! ### **Our work model is hybrid, leaning toward remote.** At Just, we value the balance between autonomy and alignment. That’s why we offer **remote, hybrid, and some São Paulo\-based positions**, depending on the role — whether for office meetings or as required by the job scope. Don’t worry — all this is clearly indicated in the job description and throughout the selection process. If you’re based in SP, you’ll have access to a modern, well\-equipped physical space. Whether at home or in our office, what matters is that you feel comfortable day to day! ### **Benefits** We know that attracting top talent requires more than just competitive salaries. That’s why we’ve designed a comprehensive benefits package to enhance wellbeing and quality of life for everyone at Just! Check out the main ones: ### **How Do We Evaluate Our Work Environment?**