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.

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.