Senior Fullstack C# and React Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Fullstack C# and React Engineer based in Brazil. Join a fully remote engineering team building scalable B2B SaaS solutions for global clients in a fast-paced, cloud-native environment. In this hands-on role, you will own application and service development from architecture and implementation through testing and deployment. You’ll work primarily across C#/.NET and React, with a backend-leaning focus and approximately 70% hands-on development and 30% mentoring. Your work will involve microservices, APIs, event-driven architectures, cloud platforms, and modern infrastructure. You’ll collaborate across teams, influence technical decisions, and help deliver reliable, secure, and high-performing solutions. This is an opportunity to combine deep technical execution with leadership and meaningful impact. This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior Fullstack C# and React Engineer based in Brazil. Join a fully remote engineering team building scalable B2B SaaS solutions for global clients in a fast-paced, cloud-native environment. In this hands-on role, you will own application and service development from architecture and implementation through testing and deployment. You’ll work primarily across C#/.NET and React, with a backend-leaning focus and approximately 70% hands-on development and 30% mentoring. Your work will involve microservices, APIs, event-driven architectures, cloud platforms, and modern infrastructure. You’ll collaborate across teams, influence technical decisions, and help deliver reliable, secure, and high-performing solutions. This is an opportunity to combine deep technical execution with leadership and meaningful impact. Accountabilities Develop and maintain scalable applications and services using C#/.NET and React , primarily hosted on AWS and/or Azure PaaS environments. Design technical architectures using diagrams and detailed technical design documentation, translating functional and non-functional requirements into reliable solutions. Build highly available, scalable, and cost-efficient microservices and modern APIs within distributed software architectures. Design and implement event-driven solutions that enable system components to communicate and trigger actions efficiently. Work with Docker, Terraform, NoSQL databases, and distributed storage technologies to support modern cloud-native applications. Integrate security practices throughout the software development lifecycle and ensure solutions meet appropriate security standards. Implement monitoring and observability solutions to track application performance, system health, and resource utilization. Estimate and plan development work through user stories and technical tasks, delivering independently while maintaining high engineering standards. Mentor other engineers through feedback on architecture, documentation, code quality, and development practices. Contribute to team growth through technical interviews, recruiting, and hiring activities. Collaborate effectively with distributed teams and international clients to understand requirements and deliver business-focused technology solutions. Requirements Bachelor’s degree in Computer Science, Engineering, or a related discipline, or equivalent practical experience. 6+ years of professional experience as a Full-Stack Developer or Software Engineer, with a backend-leaning profile of approximately 60–65% backend and 35–40% frontend development. Strong hands-on expertise with C# and .NET 6 or later , along with senior-level experience using ASPX Pages and React. Proven experience developing and operating production-grade microservices and designing or consuming APIs within modern software architectures. Practical experience with Docker and Terraform , plus strong cloud experience with AWS and/or Azure ; deep expertise in either platform is highly valued. Experience designing and implementing event-driven architectures, integrating security into development processes, and working with NoSQL or decentralized databases and distributed storage. Experience implementing monitoring and observability tooling to support reliable, high-performing systems. Strong software engineering fundamentals, architecture knowledge, and the ability to independently translate requirements into effective technical solutions. Excellent communication and interpersonal skills, with the ability to collaborate effectively across technical and business teams. Advanced English proficiency (C1–C2) is required for working closely with US-based clients and international teams. Benefits Competitive USD salary . 100% remote work from Brazil and the wider LATAM region. Access to coworking spaces across LATAM for those who want to connect with colleagues in person. Paid time off and national holidays according to local regulations, with full salary maintained. Paid sick leave to support your health and wellbeing. Annual flexible credit to spend on perks that support your work-life balance. Birthday day off during your birthday week. Team-building activities, including virtual coffee breaks, tech talks, and social gatherings. A collaborative remote community with opportunities to connect, learn, and grow professionally. People-focused support, including wellness and professional development initiatives. A culture centered on autonomy, flexibility, inclusion, and outcomes rather than hours worked. Opportunities to work on complex digital transformation initiatives for global clients and expand your technical horizons. 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