Experienced Backend Developer (.NET / AWS) - Warsaw and Surrounding Areas w Warszawa, Polska

Experienced Backend Developer (.NET / AWS) Summary We are seeking an Experienced Backend Developer with expertise in AWS who excels in taking ownership and driving projects from conception to production. This role demands comfort in complex environments, a deep understanding of business and domain contexts, and a commitment to enhancing both product quality and working methodologies. What we offer: Rate: 40-45 euro/h + VAT Long Term B2B Contract Remote but sometimes visit office in Warszaw Main Responsibilities Develop and maintain backend services and applications. Collaborate with business stakeholders and team members. Drive work from ideation through implementation. Participate in the modernization and improvement of the platform. Ensure robust documentation and support for delivered solutions. Key Requirements Strong experience with C# and .NET core (we use .NET 10). Proficiency in Entity Framework. Solid knowledge and hands-on experience with AWS and cloud architectures. Experience with GitLab and CI/CD practices. Understanding of SOLID principles and clean code practices. Experience in Agile/Kanban methodologies. Ability to drive work independently from requirements through deployment and support. Nice to Have Familiarity with microservices architecture. Experience with containerization technologies such as Docker. Knowledge of serverless architectures in AWS.