Note: Candidate must have valid work permit for Spain.Advanced English.Strong experience with C# and .NET Core.Interested candidates can share their CV sweety@infotreeservice.com / WhatsApp: +34 657391582What does a great Senior Engineer (.NET) do?In this role you will be working on Productivity Automator, a modern self-service platform that allows our customers to configure automation rules that automate repetitive tasks at high volume every day.As a senior engineer on the team, you will be collaborating closely engineering and product peers every day to understand complex problems and bring innovative solutions. You will work with your team to build and deliver those solutions to production quickly. Our product is cloud native - and is designed to be scalable from the ground up – you will play a critical role in ensuring that we continuously optimize and improve our application architecture to handle high volumes efficiently.The impact of your work on Productivity Automator will be significant, the code that you ship will end up in the hands of agents globally that make the travel industry tick every single day. If you're interested in collaborating with a great team, solving complex problems and realizing your ideas quickly – we'd love to hear from you.Responsibilities include:- Designing and delivering clean, robust, well tested code in an agile, test-driven development environment.- Collaborating with engineering and product peers to refine ideas and technical solutions to meet our customer needs.- Proactively input ideas to evolve the architecture and improve performance of the product.- Help the team to adopt new processes and technologies. Provide mentorship and coaching to junior team members.- Inputting strongly into the technical solutions with the team - provide meaningful and constructive code reviews and feedback to your peers.Who we are looking for in this role:- At least 5 years' experience in developing scalable, performant and robust web applications.- Strong experience with C# and .NET Core.- Somebody who has a genuine passion for writing high quality, testable and clean code.- Deep understanding of design patterns, principles and best practices.- Excellent problem-solving skills.- Experience working with relational and NoSQL databases.- Proven ability to collaborate and communicate effectively.It would be advantageous if you have:- Experience developing applications using messaging brokers (Azure Service Bus, Kafka or similar).- Knowledge of Azure cloud platform (or AWS).- Practical experience of containerization using Docker and Kubernetes.- Good understanding of CI/CD principles and best practices.