Senior Fullstack Developer
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Job Description
Senior Fullstack Developer designing and developing RESTful APIs utilizing .NET and ASP.NET Core at Brasil-Frenet. Contributing to frontend component development and end-to-end project delivery.
Responsibilities:
- Design, develop, and evolve RESTful APIs using .NET 8+ and ASP.NET Core, focusing on performance, scalability, and sound architectural practices
- Work in full-stack development, also contributing to component-based frontend development (React, Vue, or similar)
- Build and maintain integrations with external platforms (e-commerce, marketplaces, and logistics partners) using REST, GraphQL, and OAuth 2.0
- Implement resilient flows using messaging (e.g., queues, retries, idempotency, circuit breaker)
- Work end-to-end, from technical design to production deployment (Docker and cloud environments)
- Investigate critical incidents, perform advanced troubleshooting, and drive root-cause analysis
- Ensure system observability (APM, structured logs, and metrics) to support operations
- Actively contribute to architecture decisions, evaluating technical trade-offs and business impact
- Write and maintain automated tests (unit and integration) as part of development
- Participate in code reviews, promoting quality, standards, and the team’s technical growth
- Document APIs and technical flows (OpenAPI/Swagger, diagrams, changelogs)
Requirements:
- Strong experience with .NET (C#) and ASP.NET Core
- Experience with full-stack development (React, Vue, or similar)
- Solid experience designing and consuming RESTful APIs
- Experience with relational databases (SQL Server) and data modeling
- Hands-on knowledge of messaging and asynchronous systems (e.g., SQS, RabbitMQ, or similar)
- Experience with automated testing (xUnit, Moq, or similar)
- Experience with cloud platforms (preferably AWS: S3, SQS, Lambda, or equivalents)
- Experience with containers (Docker)
- Knowledge of observability tools (Datadog, Grafana, New Relic, or similar)
- Experience with authentication/authorization (OAuth 2.0, JWT)
- Knowledge of CI/CD and DevOps practices
- Proficiency with Git and versioning strategies
- Ability to make technical decisions autonomously
- Critical mindset regarding architecture and code quality
- Good communication with technical and non-technical teams
- Proactive approach to solving complex problems
- Ownership of the work you develop
Benefits:
- Work model: 100% remote
- International environment
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