Desenvolvedor Fullstack Sênior - C# Python React

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Desenvolvedor Fullstack Sênior - C# Python React based in Brazil. This is a senior full-stack development opportunity for an experienced engineer working across backend, frontend, cloud, and integration architecture. You will build and maintain robust software solutions using C#/.NET, Python, and React, contributing across the application lifecycle. The role combines hands-on development with modern AWS services, API design, relational databases, automation, and production operations. You will work on solutions that require reliability, scalability, and strong engineering practices in environments where technology supports critical business needs. Your responsibilities will span development, deployment, monitoring, troubleshooting, and ongoing application support. The position is suited to a technically strong professional who combines curiosity and product mindset with the ability to solve complex engineering challenges. You will have the opportunity to contribute to high-impact technology projects while working in a collaborative and innovation-focused environment. This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Desenvolvedor Fullstack Sênior - C# Python React based in Brazil. This is a senior full-stack development opportunity for an experienced engineer working across backend, frontend, cloud, and integration architecture. You will build and maintain robust software solutions using C#/.NET, Python, and React, contributing across the application lifecycle. The role combines hands-on development with modern AWS services, API design, relational databases, automation, and production operations. You will work on solutions that require reliability, scalability, and strong engineering practices in environments where technology supports critical business needs. Your responsibilities will span development, deployment, monitoring, troubleshooting, and ongoing application support. The position is suited to a technically strong professional who combines curiosity and product mindset with the ability to solve complex engineering challenges. You will have the opportunity to contribute to high-impact technology projects while working in a collaborative and innovation-focused environment. Accountabilities Design, develop, maintain, and evolve full-stack software solutions using C#/.NET, Python, and React. Develop and maintain backend services and frontend applications, ensuring reliability, maintainability, and a strong user experience. Read, understand, maintain, and migrate existing Python scripts and automation routines when required. Design, build, consume, and integrate REST APIs with appropriate authentication, error handling, retry mechanisms, and idempotency. Work with AWS cloud services including Lambda, ECS, S3, RDS, SQS/SNS, and CloudWatch to build and operate scalable applications. Design and implement integrations involving batch processes, scheduled jobs, queues, and event-driven architectures. Work with relational databases and SQL to support application functionality, data access, and system integrations. Participate in deployment, monitoring, troubleshooting, and production support activities throughout the application lifecycle. Implement and maintain automated tests and contribute to CI/CD pipelines and reliable software delivery practices. Use Git and established engineering workflows to collaborate effectively with other developers and technical stakeholders. Investigate production issues, identify root causes, and implement sustainable technical solutions. Contribute to architectural decisions, technical improvements, and the continuous evolution of applications and integrations. Requirements: Solid professional experience in software development using C# and .NET. Practical knowledge of Python, with the ability to read, understand, maintain, and migrate existing scripts and automation. Professional experience with React and frontend application development and maintenance. Hands-on experience with AWS services such as Lambda, ECS, S3, RDS, SQS/SNS, and CloudWatch. Strong understanding of REST API development and integration, including authentication, error handling, retries, and idempotency. Solid knowledge of relational databases and SQL. Experience with Git, CI/CD practices, and automated software testing. Proven experience working with production environments, including deployments, monitoring, troubleshooting, and application support. Understanding of integration architectures involving batch routines, scheduled jobs, queues, and event-driven systems. Strong problem-solving and analytical skills, with the ability to investigate complex technical issues and develop reliable solutions. Ability to work across the full technology stack and collaborate effectively with technical and business stakeholders. Curiosity, ownership, adaptability, and a product-oriented mindset, with a strong commitment to software quality and continuous improvement. Benefits: Fully remote work from Brazil. PJ engagement model. Opportunity to work on high-impact technology projects and real-world software solutions. Exposure to modern cloud technologies and AWS services. Hands-on experience across backend, frontend, integrations, databases, CI/CD, and production engineering. Collaborative environment focused on innovation, technical quality, and professional growth. Opportunity to contribute to projects within technology-driven and business-critical environments. Scope to expand technical expertise across full-stack development and modern software architecture. 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). 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