Senior .NET Developer - Retail Sector - Hybrid (Porto Alegre)

Description

Job Summary: We are seeking a Senior .NET Developer with solid experience in microservices architecture and event-driven solutions to evolve complex systems and define technical standards, valuing ownership and collaboration. Key Highlights: 1. Evolving complex systems and defining technical standards. 2. Collaborative environment that encourages knowledge sharing. 3. Culture of collaboration, autonomy, and co-creation of solutions. **What will we build together?** Our team is committed to proposing technically excellent solutions, exploring alternatives that generate value, and adopting an agile mindset combined with a collaborative culture. We value diversity and believe that plural teams are essential for developing more innovative ideas. We seek a Senior .NET Developer with strong experience in microservices architecture and event-driven solutions, capable of evolving complex systems and defining technical standards. Beyond technical excellence, we value professionals who take ownership in identifying improvements, clearly communicate risks, and actively contribute to the team’s growth. We expect someone experienced in technical documentation, writing user stories and tasks, mentoring peers, and collaborating in architectural and planning discussions. We also seek a proactive attitude toward supporting production environments, focus on delivery quality, and the ability to balance pragmatism and technical excellence to drive business impact. Here, you’ll find a collaborative environment that encourages knowledge sharing, autonomy, and joint development of high-level solutions. **Responsibilities and Duties** * Design and evolve the architecture of new workflows and microservices; * Define and ensure coding, architectural, and quality standards across the team; * Perform deep refactorings: decomposition of God Classes, reduction of cyclomatic complexity, elimination of duplication; * Conduct code reviews focused on architecture, security, and performance; * Guide mid-level and junior developers on development practices; * Define testing strategies and ensure minimum coverage for critical workflows; * Identify and fix application-level security issues (authentication, validation, data protection); **Requirements and Qualifications** **To apply, you must have:** * C\# / .NET (6\+); * ASP.NET Core (WebAPI, Minimal APIs, middleware); * Entity Framework Core / Dapper; * RabbitMQ (messaging patterns, dead-letter queues, retry mechanisms); * SQL Server (data modeling, indexing, execution plans); * Messaging and event-driven architecture; * Git / Azure DevOps CI/CD; * Docker / Kubernetes (containerization and orchestration); * Solid experience in microservices and event-driven architecture; * Experience analyzing cyclomatic complexity and refactoring legacy code; * Experience with CI/CD pipelines integrating quality analysis and automated tests; * Proficiency in SOLID principles, Clean Code, DRY, KISS, and YAGNI; * Knowledge of API security: JWT, OAuth, IDOR prevention, mass assignment, rate limiting, security headers; * Experience with structured logging, telemetry, and production performance diagnostics; * Ability to model relational databases with performance in mind: indexes, projections, execution plans; * Ability to evaluate and select appropriate design patterns for each problem (Strategy vs Chain, CQRS vs Read Replicas, etc.). **Nice-to-have qualifications:** * E-commerce knowledge; * Experience with the VTEX platform; * Integration microservices; * SonarQube (static code analysis); * MediatR / CQRS (correct implementation, not just library usage); * Integration testing and test pyramid–oriented coverage; * Azure Blob Storage; * OpenTelemetry / Application Insights; * OpenAPI / Swagger (versioning and documentation); * GoF and architectural design patterns (Strategy, Chain of Responsibility, Adapter, Factory, etc.). **Additional Information** **Here’s what you’ll get:** * iFood Card (meals and food); * Remote Work Allowance; * Health Insurance; * Dental Insurance; * Birthday Day Off; * Life Insurance; * Extended Maternity and Paternity Leave; * Educational Partnerships; * Total Pass \- Health and Well-being Partnership; * Clude Saúde Partnership; * Reimbursement Programs; * Flexible Working Hours; * Dress Code: Be yourself. From home garages to the world — this is how DB’s story began. Founded with a desire for change, our purpose is to be a people-centered technology company grounded in collaboration, inclusion, and diversity. In 1993, we started as consultants for one of the major database systems of the time — which gave us our original name, DBServer (Database Server) — and gradually evolved into today’s DB (Design \+ Build the future), a company that drives change through innovation and humanity. We develop people who impact businesses through technology and innovation, participating flexibly and collaboratively in squads, consulting engagements, and training across all lifecycle stages — from Discovery to Delivery and ongoing support. ***A Focus on Diversity & Inclusion*** DB has built a journey defined by cultural markers rooted in deep human meaning, integrated into our daily work. With courage and empathy, collaboration, collective awareness, and community spirit, we’re evolving toward a people-centered culture. We proudly foster a discrimination-free workplace. We believe that diversity of experiences, perspectives, and backgrounds transforms our work environment. We’re committed to building this legacy — with your partnership! ***Explore our Ethical Framework:******https://bit.ly/MarcoEtico***