Senior Software Developer - .NET

Localiza&Co

Senior .NET Developer responsible for backend solutions at Localiza&Co. Engaging in system architecture, development, and ownership of high-volume systems.

Posted 6/16/2026full-timeRemote • 🇧🇷 BrazilSeniorWebsite

Tech Stack

Tools & technologies

DockerEntity FrameworkKafkaKubernetesMongoDB.NETPostgresRabbitMQSQL

About the role

Key responsibilities & impact

Define scalable, resilient, and well-structured architectures, considering trade-offs between performance, cost, complexity, and time-to-market;
Take end-to-end ownership: from design to deployment, monitoring, and continuous evolution of systems;
Develop and evolve backend solutions in .NET, following best practices, design patterns, and a strong focus on quality;
Maintain and modernize existing systems, including refactoring legacy code and resolving critical incidents;
Translate technical decisions into clear business impacts, supporting stakeholders in decision-making;
Implement automated tests (unit, integration, and end-to-end) to ensure software reliability;
Design observability from the outset, including metrics, logs, traces, alerts, and business continuity strategies;
Actively participate in agile rituals (dailies, refinements, reviews, and retrospectives);
Proactively identify problems, simplify solutions, and reduce unnecessary complexity.

Requirements

What you’ll need

Solid experience in backend development with .NET and C#;
Experience with relational and NoSQL databases such as SQL Server, PostgreSQL, Sybase, and MongoDB;
Experience in data modeling and query optimization;
Familiarity with Entity Framework and Dapper;
Experience with messaging systems (RabbitMQ and/or Kafka) and event-driven architecture;
Experience developing RESTful APIs and integrating services;
Experience with microservices, Docker, and Kubernetes;
Experience working on high-volume, high-criticality systems;
Knowledge of security best practices, authentication, and authorization;
Experience with monitoring and observability tools (e.g., Datadog);
Experience with agile methodologies (Scrum and/or Kanban);
Regular use of AI tools in daily development (e.g., GitHub Copilot, Cursor, or similar);
Strong experience with automated testing;
Ability to understand the customer’s vision.

Benefits

Comp & perks

Profit sharing
Company car
Food allowance
Meal allowance
Health insurance
Dental insurance
Gympass
Private pension plan
Work-from-home allowance
Allya
Unlimited access to courses from our Localiza University
Internal training and development programs
Discounts on vehicle purchases and rentals

ATS Keywords

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Hard Skills & Tools

.NETC#backend developmentrelational databasesNoSQL databasesdata modelingquery optimizationRESTful APIsmicroservicesautomated testing

Soft Skills

end-to-end ownershipproblem identificationsolution simplificationstakeholder supportcommunicationagile participationdecision-making