SR FullStack Developer - [C# / NodeJS + React]

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a SR FullStack Developer - [C# / NodeJS + React] based in Brazil. As a Senior FullStack Developer, you will build and evolve modern applications across both backend and frontend layers, working with C#, Node.js, and React. You will contribute to cloud-based solutions and help shape scalable, reliable, and maintainable architectures. The role combines hands-on development with technical ownership, experimentation, and problem solving. You will work closely with Developers, Architects, Product Managers, Business Analysts, and Infrastructure teams in a collaborative environment. You will also contribute to CI/CD, infrastructure as code, microservices, and event-driven architectures. Engineers are expected to take ownership of quality, testing, and technical decisions while connecting technology solutions to meaningful business outcomes. This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a SR FullStack Developer - [C# / NodeJS + React] based in Brazil. As a Senior FullStack Developer, you will build and evolve modern applications across both backend and frontend layers, working with C#, Node.js, and React. You will contribute to cloud-based solutions and help shape scalable, reliable, and maintainable architectures. The role combines hands-on development with technical ownership, experimentation, and problem solving. You will work closely with Developers, Architects, Product Managers, Business Analysts, and Infrastructure teams in a collaborative environment. You will also contribute to CI/CD, infrastructure as code, microservices, and event-driven architectures. Engineers are expected to take ownership of quality, testing, and technical decisions while connecting technology solutions to meaningful business outcomes. Accountabilities: Design, develop, test, and maintain full-stack applications using C#, Node.js, React, HTML, CSS, and JavaScript. Build and maintain scalable backend services, RESTful APIs, microservices, and event-driven solutions. Develop modern frontend experiences with React while following web accessibility standards such as WCAG. Design and work with relational and NoSQL databases, including AWS RDS, Aurora, and PostgreSQL. Deploy and operate applications using AWS cloud services and modern cloud deployment practices. Design and maintain CI/CD pipelines using tools such as CircleCI and AWS CDK. Implement infrastructure as code using Terraform and/or CloudFormation. Use Git and GitHub for version control and collaborative software development. Develop proofs of concept, MVPs, experiments, and technology evaluations using design-thinking practices. Apply strong algorithmic thinking, logical reasoning, and problem-solving skills to complex technical challenges. Collaborate with cross-functional technical and business teams to prioritize initiatives and deliver effective solutions. Take ownership of code quality and testing throughout the development lifecycle, without relying on a dedicated QA function. Contribute to architectural decisions and challenge existing solutions with a focus on technical and business impact. Requirements: Bachelor's degree in Computer Science, Software Engineering, or a related field. 8+ years of experience in full-stack software development. Strong professional experience with C# and Node.js for server-side development. 8+ years of experience with modern frontend development, with strong proficiency in React. Strong knowledge of HTML, CSS, and JavaScript. 4+ years of experience with AWS RDS, Aurora/PostgreSQL, and/or NoSQL databases. 4+ years of experience working with AWS and cloud deployment environments. 2+ years of experience designing and implementing CI/CD pipelines, ideally with CircleCI and AWS CDK. Strong knowledge of Git and GitHub. Good understanding of RESTful API design, microservices, and event-driven architectures. Experience with infrastructure as code using Terraform and/or CloudFormation. Understanding of web accessibility and WCAG standards. Strong algorithm design, logical reasoning, analytical thinking, and problem-solving abilities. Ability to work independently and demonstrate technical ownership and software architecture knowledge. Product mindset, with the ability to challenge solutions, discuss business impact, and contribute strategic ideas. Strong focus on software quality, automated testing, and engineering best practices. Excellent communication and teamwork skills, with the ability to collaborate across technical and business functions. Comfortable communicating in English for daily collaboration and project discussions; English is the primary working language. Benefits: Fully remote/home-office position based in Brazil. Health and dental insurance. Meal and food allowance. Childcare assistance. Extended paternity leave. Partnerships with gyms and health and wellness professionals through Wellhub and TotalPass. Profit Sharing and Results Participation (PLR). Life insurance. Continuous learning opportunities through a dedicated learning platform. Discount club and employee partnership benefits. Free online resources focused on physical, mental, and overall well-being. Pregnancy and responsible parenting courses. Partnerships with online learning platforms. Language learning platform. Additional employee benefits and development opportunities. 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). You may exercise your rights (access, rectification, erasure, objection) at any time. #LI-CL1