Senior Fullstack Developer
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Job Description
Senior Fullstack Developer working on innovative technologies for Zup Innovation. Collaborate in a team-driven environment to develop and deploy solutions using modern tech stacks.
Responsibilities:
- Actively participate in the full lifecycle of solution conception and development, from the Discovery process, helping to identify the right problem to solve.
- Contribute to technical refinements to structure solution designs.
- Collaborate with interdependent squads to ensure alignment and integration of solutions.
- Develop frontend (React) and backend (.NET Core) layers as needed, including unit tests to ensure quality and security.
- Ensure proper configurations for DevOps processes, planning and monitoring production deployments.
- Monitor the post-release environment to ensure stability and performance.
- Apply advanced AI techniques using tools such as Python (LangChain, LangGraph), RAG, prompt engineering and agent evaluation (EVALs).
- Work with AWS infrastructure (DocumentDB, Lambda, ECS, S3, Redis) and CI/CD tooling (GitHub Actions, Terraform, Docker).
- Collaborate in the development and integration of intelligent agents; knowledge of MCP and Go is a plus.
Requirements:
- Next.js with React 18+
- Knowledge of accessibility (WCAG standards).
- Responsive design.
- .NET Core.
- Source control/versioning (GitLab/GitHub).
- Object-oriented programming, design patterns, SOLID principles and Clean Code.
- Development and consumption of REST APIs.
- Code quality (SonarQube, Fortify, unit test coverage).
- Advanced code review techniques.
- Advanced knowledge of the AWS ecosystem (CodePipeline, deployment pipelines).
- Micro-frontend architecture (Web Components, Module Federation, Single-SPA).
- Advanced knowledge of design patterns.
- Proficiency in observability techniques (Splunk, Grafana, Prometheus).
- Microsoft/.NET certifications are a strong plus.
- React 18+ with TypeScript — including native hooks and composition patterns (useCallback, useMemo, useReducer).
- Experience with Next.js (App Router, SSR/SSG/ISR, bundle optimization).
- Knowledge of Web Components and integration with React.
- Creating and maintaining custom hooks with well-defined responsibilities.
- Context API / state management without external libraries.
- Unit testing with Testing Library and E2E testing with Cypress (test coverage).
- Conventional Commits and Git best practices.
Benefits:
- Freedom to work from anywhere
- Flexible working hours
- Education assistance
- In-house career development tool
- Internal guilds and study/interest groups
- Health insurance
- Dental insurance
- Pharmacy discounts (medication purchasing partnership)
- 24/7 telemedicine
- Free online therapy
- Wellhub
- Extended maternity leave
- Extended paternity leave
- CAZ – Zupper Support Center
- Meal and food vouchers
- Life insurance
- Transportation allowance
- Home office allowance
- Childcare assistance
- Phone plan allowance
- Profit sharing and results-based bonuses
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