Senior Software Engineer (.Net)

Description

We are Grupo Casas Bahia, with over 70 years of history, fulfilling the dreams of \+100 million Brazilians. Here, we are always the protagonists, consistently acting with integrity and ethics in everything we do. Our passion for our people is what drives us, and our total dedication to the customer is our daily commitment. We deliver results and constantly seek simplicity in everything we do! **Responsibilities and Duties** * Develop and evolve microservices of the e\-commerce platform (checkout, offers, payments, shipping) with a focus on high throughput and predictable latency. * Maintain and modernize legacy systems (.NET Framework / WCF), with a vision of progressive migration. * Work on fixes, improvements, and new projects via a prioritized backlog, ensuring zero impact on the purchase flow. Oversee the complete lifecycle: analysis, implementation, testing, deployment, and production observability. * Participate in code reviews with an enterprise-quality mindset (SonarQube, Clean Code, SOLID). * Ensure resilience and scalability under high-demand scenarios (Black Friday, campaigns). **Requirements and Qualifications** * Experience developing in C\# and .NET 8\+ (knowledge of .NET 10\ preferred); * Hands-on experience building RESTful APIs using ASP.NET Core Web API; * Knowledge of software architecture using Clean Architecture and DDD (Domain\-Driven Design) with tactical patterns; * Experience with relational database SQL Server, including modeling, query creation, stored procedures, and Dapper usage; * Knowledge of document-oriented database MongoDB; * Experience implementing and using Redis cache; * Hands-on experience with messaging using Kafka, including development of idempotent consumers and producers; * Experience with automated testing using xUnit, mocks (NSubstitute or similar), and integration tests; * Knowledge of data validation using FluentValidation; * Experience implementing resilience strategies using Polly (retry, circuit breaker, timeout); Knowledge of code quality practices using SonarQube, focusing on zero warnings and cyclomatic complexity \u003c= 15; * Experience with Git-based version control, including Conventional Commits and branching strategies; * Basic knowledge of infrastructure with Docker and Kubernetes, including understanding of pods, health checks, and deployments. **It would be great if you had (nice-to-have):** * Experience with high-throughput systems (e\-commerce, fintech, telecom) * BenchmarkDotNet for profiling hot paths * Serilog (structured logging) * Refit for typed HTTP clients * WireMock for integration testing * GitHub Actions (CI/CD) * Helm charts Experience migrating legacy systems (.NET Framework \u2192 .NET modern) * Knowledge of WCF / Web Forms (maintenance of existing systems) **Additional Information** **Check out some of the amazing benefits we've prepared to ensure your well\-being and quality of life:** * **PLR/Bonus**: An extra recognition to value your effort and dedication! * **Medical and Dental Assistance**: So you can have full security and care for your health and your family's. * **Meal Voucher**: Because we know that quality nutrition is essential for your daily life! * **Life Insurance**: Peace of mind and protection for you and your loved ones. * **Extended Maternity Leave**: 180 days for our moms to enjoy this special moment with their baby! * **Extended Paternity Leave**: 20 days so fathers can also be present during their child's first days of life. * **Incentive for Physical Activity**: Access Wellhub (Gympass) and Total Pass to take care of your health and keep your body moving. * **Transportation Allowance**: To ensure your commute to work is stress-free and worry-free. * **SESC Partnership**: Enjoy incredible benefits in culture, leisure, health, and more! * **Discount Club**: Enjoy discounts of up to 70% on products and services with over 2\.000 partners across Brazil and Latin America! * **Birthday Day\-off**: Celebrate your special day with more calm and fun — you're entitled to a day off on your birthday! * **Pharmacy Discounts**: Exclusive discounts on medications to help you save on healthcare! Our commitment is to provide not only a workplace but also an experience that values and cares for you as a person! We’re here to support your personal and professional growth. \#VEMPROGRUPOCASASBAHIA All our opportunities are open to both **internal and external applicants**. **Team members**, please don’t forget to access our internal recruitment policy on **Service Now** to review program requirements and principles. *Grupo Casas Bahia is one of Brazil’s most iconic companies, with a rich history spanning decades. Its journey is marked by resilience, innovation, and unwavering dedication to you! Our dedication is tireless; our drive to deliver solutions and engage face-to-face makes us human.* *We are over 30,000 employees, operating Brazil’s largest and most digital logistics network, connected to over 1,000 physical stores and 29 distribution centers and delivery hubs — all designed for our 200+ million customers.* *If you’re driven by passion, simplicity, transformation, and the same dedication we have toward you and all Brazilians, welcome aboard — feel at home and explore our career opportunities at Grupo Casas Bahia.*