Senior .NET/React/AI Developer

Stefanini Brasil

Sênior .NET/React/IA Developer enhancing software quality and productivity with generative AI in São Paulo. Responsible for full solution lifecycle from development to support.

Posted 6/12/2026full-timeSão Paulo • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

AngularAzureBootstrapDockerJavaScriptjQueryKubernetes.NETRabbitMQReactSQL

About the role

Key responsibilities & impact

Solution Lifecycle: Act end-to-end, being responsible for specification, development, deployment, support for user acceptance testing, and ongoing maintenance of solutions.
Solution Development: Oversee the development and architecture of systems using .NET C#, ensuring application integrity, scalability and security.
Systems Integration: Design and implement integrations with internal systems and external partner solutions.
Acceleration via AI: Methodically incorporate generative AI assistants (such as GitHub Copilot, Claude Code, LLM assistants and related tools) to optimize development turnaround, code refactoring and test automation.
Business Interface: Actively participate in technical committees and business meetings, proactively translating functional requirements into architectural solutions.
Technical Documentation: Prepare and keep manuals, architecture diagrams and standard operating procedures up to date.
Deadline Management: Strictly adhere to established timelines, mitigating delay risks through strategic use of technology.

Requirements

What you’ll need

Consolidated experience in software development at a senior or specialist level.
Advanced mastery of the .NET ecosystem: C#, MVC and Web API.
Solid knowledge of Domain-Driven Design (DDD).
Experience with the Dapper ORM.
Proficiency in SQL Server (creating and optimizing Procedures, Functions, Triggers and Views).
Proficiency in classic frontend development: React, Angular, JavaScript, jQuery and Bootstrap.
Experience with CI/CD pipelines and version control (Git / Azure DevOps).
Hands-on experience applying AI tools for software engineering to achieve technical efficiency.
Knowledge of prompt engineering applied to source code generation and review.
Technical knowledge of Microsoft Azure architecture and services.
Experience with containerized applications (Docker / Kubernetes).
Experience with messaging-based architectures (RabbitMQ or equivalents).
Deep knowledge of Agile development methodologies.
Relevant professional certifications within the Microsoft ecosystem or in cloud architecture.

Benefits

Comp & perks

Hybrid work (2 days in office) in São Paulo, SP — Pinheiros neighborhood.

ATS Keywords

✓ Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

.NETC#MVCWeb APIDomain-Driven DesignDapper ORMSQL ServerReactAngularDocker

Soft Skills

deadline managementcommunicationproblem-solvingcollaborationtechnical documentation

Certifications

Microsoft certificationscloud architecture certifications