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Senior Software Developer

Valsoft Corporation
Spain - Remote, SpainRemotefull_timeVerifiedPosted 16 Jul 2025

About the role

<p>We are seeking a highly skilled and experienced Senior Software Developer to join our team. This role requires deep expertise in .NET Core, C#, SQL, AWS, TypeScript, React, and GitLab, along with a strong understanding of software architecture, agile methodologies, and team leadership. As a senior member of the team, you will play a key role in shaping technical solutions, mentoring peers, and driving best practices across the development lifecycle.</p><p></p><h3><strong>Responsibilities</strong></h3><p></p><ul> <li>Lead the design, development, and maintenance of scalable web applications using <strong>C#, .NET Core, MVC</strong>, and <strong>React</strong>.</li> <li>Collaborate with cross-functional teams to define technical requirements and deliver high-impact solutions.</li> <li>Participate in architectural decisions and contribute to long-term technical strategy.</li> <li>Ensure code quality through reviews, testing, and adherence to development standards.</li> <li>Mentor junior developers and promote knowledge sharing within the team.</li> <li>Manage CI/CD pipelines and version control using <strong>GitLab</strong>.</li> <li>Work in an agile environment, contributing to sprint planning, estimations, and retrospectives.</li> </ul><p><strong>Requirements</strong></p><ul> <li>Minimum <strong>5 years of professional experience</strong> in backend development with <strong>C# and .NET Core</strong>.</li> <li>Strong proficiency in <strong>SQL Server</strong> and relational database design.</li> <li>Hands-on experience with <strong>AWS</strong> services (e.g., Lambda, S3, RDS).</li> <li>Solid frontend development skills using <strong>TypeScript</strong> and <strong>React</strong>.</li> <li>Familiarity with <strong>MVC architecture</strong>, <strong>SOLID principles</strong>, and design patterns.</li> <li>Experience with <strong>GitLab</strong> for source control and CI/CD workflows.</li> <li>Proven ability to work in <strong>agile teams</strong> and deliver in fast-paced environments.</li> <li>Excellent problem-solving, communication, and collaboration skills.</li> <li> <strong>Bachelor’s degree in Computer Science, Telecommunications Engineering, or a related field</strong>.</li> </ul><h3></h3><p></p><p><strong>Preferred Qualifications</strong></p><p></p><ul> <li>Experience with automated testing frameworks (unit, integration).</li> <li>Exposure to microservices or event-driven architectures.</li> <li>Knowledge of DevOps practices and infrastructure as code.</li> <li>Previous experience in mentoring or leading small development teams.</li> </ul><p><strong>Benefits</strong></p><ul> <li>A stable and innovative project environment using modern technologies.</li> <li>Flexible working hours and remote work options.</li> <li>Opportunities for continuous learning and career growth.</li> <li>A collaborative and inclusive team culture.</li> </ul>

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Company

Valsoft Corporation

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