Senior Full-Stack Developer, C# / React

Stellenbeschreibung:

Develop services and APIs in C# (.NET / .NET Core) following REST, SOLID, Clean Architecture, and Clean Code principles
Develop and maintain scalable, accessible React interfaces using Hooks, Context, and global state management, preferably with TypeScript
Model data and implement efficient queries in SQL databases (PostgreSQL, SQL Server, MySQL) and NoSQL databases (MongoDB, DynamoDB)
Ensure quality through unit, integration, and end-to-end testing, code reviews, and sound engineering practices
Safeguard security (authN/authZ, OWASP Top 10), observability (structured logs, metrics, tracing), and performance
Promote best practices and actively participate in code reviews and design reviews
Collaborate with Product, QA, and UX teams on discovery and continuous delivery in Lean, Agile, and Kanban/Scrum environments
Work on end-to-end SaaS solutions for the Brazilian insurance market

Requirements

Experience in backend development with C# (.NET) and frontend development with React
Strong knowledge of REST APIs, API versioning, and integration with external services
Hands-on experience with .NET Core, dependency injection, middleware, and HTTP pipelines
Practical experience using Docker in real-world projects (building, distributing, and running applications across different environments)
Proven experience with SQL (relational modeling and optimized queries) and NoSQL
Knowledge of Git, CI/CD, automated testing, and continuous integration (GitHub, GitLab, Azure DevOps)
Experience with scalable architectures, caching, messaging (e.g., RabbitMQ, Kafka), and observability
Experience using and developing software development and engineering agents
Experience developing with applied AI
Experience with Claude, Copilot, or modern IDEs such as Cursor
Currently pursuing a degree in a technology-related field
Strong communication skills, autonomy, and a strong sense of ownership
Preferred: experience with Entity Framework Core, Dapper, or similar ORMs
Preferred: knowledge of TypeScript for frontend development
Preferred: experience with React ecosystem frameworks (Next.js, React Query, Redux Toolkit)
Preferred: experience with cloud platforms (AWS, Azure, or GCP), Terraform, and Kubernetes
Preferred: experience with API security (OAuth2, OIDC, JWT), feature flags, and blue/green or canary releases
Preferred: participation in communities, technical writing, or open-source contributions

Core Competencies

Demonstrates expertise in backend development with C# (.NET) and frontend development with React, focusing on REST APIs, scalable architectures, and efficient database management. Proficient in implementing security measures and best practices in software development while collaborating effectively in Agile environments.