Senior Fullstack (.NET / React / AI)

Avenue Code; United States; Remote; BRL 180,000 - 240,000; Full time

Job summary

Avenue Code is seeking a highly skilled Senior Full Stack .NET Engineer with hands-on experience in backend and frontend using C#/.NET and React.js. You will design, develop, and maintain scalable enterprise applications, contributing to modern architectures and high-quality software.

This fully remote opportunity is open to candidates based in Latin America, requiring strong English communication and ability to collaborate in a distributed, fast-paced engineering environment.

Qualifications

• Senior level with 6+ years in professional software development.

Responsibilities

• Full Stack Development: design, develop, and maintain scalable apps using C#/.NET and React.js.
• Backend Engineering: build RESTful APIs, services, and business logic with modern .NET tech.
• Architecture & Scalability: contribute to microservices, distributed architectures.
• Cloud & DevOps: develop and support cloud-based apps, containerized environments, CI/CD.
• Engineering Quality: write secure, maintainable, well-tested code and participate in code reviews.
• Collaboration: work with engineers, product teams, and stakeholders.
• Technical Leadership: mentor engineers and contribute to standards.

Skills

C#/.NET

React.js

RESTful APIs

Microservices

Cloud platforms

Docker

Kubernetes

CI/CD

SQL databases

Job description

We are seeking a highly skilled Senior Full Stack .NET Engineer with strong hands-on experience across both backend and frontend development. In this role, you will design, develop, and maintain scalable enterprise applications using C#/.NET and React.js, contributing to modern architectures and reliable, high-quality software solutions.

This is a fully remote opportunity for candidates based in Latin America, requiring strong English communication skills and the ability to collaborate effectively within a distributed, fast-paced engineering environment.

Responsibilities

• Full Stack Development: Design, develop, and maintain scalable applications using C#/.NET and React.js, contributing actively to both backend and frontend development.
• Backend Engineering: Build and maintain RESTful APIs, services, and business logic using modern .NET technologies and software engineering best practices.
• Architecture & Scalability: Contribute to architectural decisions involving microservices, distributed systems, and event-driven architectures.
• Cloud & DevOps: Develop and support cloud-based applications, containerized environments, and CI/CD processes.
• Engineering Quality: Write secure, maintainable, well-tested code and participate in code reviews, troubleshooting, and continuous improvement initiatives.
• Collaboration: Partner closely with engineers, product teams, and other stakeholders to translate business requirements into effective technical solutions.
• Technical Leadership: Share knowledge, mentor other engineers, and contribute to engineering standards and best practices.

Required Qualifications

• Senior Engineering Background: 6+ years of professional software development experience, with proven experience working in full-stack roles.
• .NET Expertise: Strong hands-on experience with C#, .NET Core, and modern .NET versions.
• Full Stack Experience: Demonstrated ability and willingness to contribute across both backend and frontend development.
• APIs & Architecture: Experience designing, building, and consuming RESTful APIs, as well as working with microservices and distributed architectures.
• Cloud Experience: Hands-on experience with cloud platforms such as Azure, AWS, or GCP.
• Containers & DevOps: Experience with Docker, Kubernetes, CI/CD pipelines, and modern software delivery practices.
• Data: Experience working with relational databases such as SQL Server, PostgreSQL, or similar.
• Communication Skills: Strong problem-solving, collaboration, and English communication skills, with the ability to work effectively in a distributed engineering team.

Nice To Have Skills

• Experience with messaging or event-driven technologies such as Kafka, RabbitMQ, Azure Service Bus, or similar.
• Experience modernizing or refactoring legacy enterprise applications.
• Experience with automated testing frameworks and modern testing practices.
• Experience with Generative AI/LLM solutions or AI-assisted development tools.
• Experience building high-scale, customer-facing enterprise applications.

Avenue Code reinforces its commitment to privacy and to all the principles guaranteed by the most accurate global data protection laws, such as GDPR, LGPD, CCPA and CPRA. The Candidate data shared with Avenue Code will be kept confidential and will not be transmitted to disinterested third parties, nor will it be used for purposes other than the application for open positions. As a consultancy company, Avenue Code may share your information with its clients and other companies from the AI/R company to which Avenue Code’s consultants are allocated to perform its services.