Job Summary: As a Senior Developer, you will join the Customer Experience Unit, where you will perform analysis, design, coding, and testing of complex programs, ensuring their operation within planned timelines. Key Highlights: 1. You will join the Customer Experience Unit, developing digital channels. 2. You will perform analysis, design, coding, and testing of complex programs. 3. You will work with a diverse and flexible team, including remote work and work-life balance. Senior .Net Developer ARE YOU UP FOR THE CHALLENGE? As a Senior Developer, you will join the Customer Experience Unit. Within the Customer Experience Unit, we focus on creating, developing, and expanding all types of digital channels and customer management applications for enterprises, covering the full lifecycle of any digital initiative in areas such as customer and employee experience, marketing, data and analytics, or integration. Our clients include large enterprises across sectors such as Telecom, Insurance, Banking, Industry, Tourism, Energy & Utilities, as well as the Public Sector. WHAT WILL YOU DO DAILY? You will be responsible for performing technical tasks—including analysis, design, coding, and testing of complex programs and/or processes—based on functional and/or technical specifications defined by analysts or architects, ensuring operation within planned timelines. You will produce technical design and documentation, as well as user manuals, adhering to the established methodology and based on functional and technical design. You will carry out program coding and customization of required tools. You will support the design and preparation of data for testing and training environments, as well as integration testing, ensuring quality control of documentation and developed programs. You will review continuous integration reports and make necessary corrections to ensure maximum code quality. You will perform tasks and analyses on low-complexity projects. You will inform the Analyst and/or Project Manager about any risks, incidents, or obstacles affecting project quality. Corrective, adaptive, and evolutionary maintenance. Integration tasks. WHAT DO WE EXPECT FROM YOU? Minimum experience: 5 years in .NET development. Current residence in Madrid (MANDATORY) **Required Technology Stack:** SQL Server (T-SQL) SQL Server Reporting Services OOP (Object-Oriented Programming) Visual Studio 2019 / 2022 .NET Framework (Web/Desktop Architectures) 4.5 or higher .NET Core Framework 3.1 or higher C# VB.NET Web Forms HTML/Javascript/CSS/JQUERY AJAX, XML/XSL/XSLT BOOTSTRAP 3 ASMX Web Services WCF RESTful Web Services (ASP.NET WEB API) ASP.NET Controls AJAX LINQ to Entities Entity Framework 6 (Database First) Entity Framework Core (Database First) Design Patterns Agile Methodologies (SCRUM) SOLID Principles Knowledge of real estate management University degree (Bachelor’s, Master’s, Superior Engineering, Technical Engineering) or IT-focused Vocational Training. Advanced English proficiency is desirable. WHAT WILL YOU FIND AT SEIDOR? A diverse team. We respect differences that make us more human. Team spirit. We work collaboratively and learn from each other. Flexibility and work-life balance. Remote work is in our DNA. We promote flexible working hours and offer shortened workdays on Fridays and during July and August. Continuous learning. Training in languages, technical skills, certifications, etc. Personalized career development, empowering you to decide how far you want to go. Autonomy and opportunities to propose and drive new initiatives. Flexible compensation program: nursery, meal, transportation vouchers, and private health insurance. Exclusive discounts and special conditions on technology, leisure, travel, etc. Opportunities to participate in social responsibility and environmental initiatives. If you have international aspirations, we operate in 45 countries. .NET, SQL Server, C#