<p>Santex is a US-based global company founded in 1999, with 25 years of experience in the software industry. Headquartered in California with offices in Córdoba, Argentina, its talent network spans over 18 countries thanks to its flexible, remote-first culture. Santex specializes in custom enterprise software development, operating through Hubs that include eCommerce, BIM, Mobility, Content Delivery, Integration, Web & Mobile Development, Cloud Computing, Artificial Intelligence (AI), Data Science, IT Consulting, and Services. The company is committed to making a positive impact across three dimensions: economic, social, and environmental.<br><strong><br>Job Description:</strong> We are seeking a highly experienced and hands-on <strong data-start="642" data-end="674">Principal Back-End Developer</strong> with deep expertise in <strong data-start="698" data-end="704">C#</strong>, <strong data-start="706" data-end="719">.NET Core</strong>, and <strong data-start="725" data-end="749">Azure Cloud Services</strong>. This role is ideal for someone who thrives in technical leadership, system architecture, and backend development at scale. As a principal engineer, you will play a critical role in designing, building, and optimizing core backend services and APIs that power our platform.</p><p><strong>Responsibilities:</strong></p><ul><li data-start="1062" data-end="1173">Lead the design, architecture, and implementation of scalable backend systems using <strong data-start="1146" data-end="1152">C#</strong> and <strong data-start="1157" data-end="1170">.NET Core</strong>.</li><li data-start="1176" data-end="1271">Define technical standards, code quality guidelines, and best practices across backend teams.</li><li data-start="1274" data-end="1348">Build and maintain RESTful APIs and microservices deployed in <strong data-start="1336" data-end="1345">Azure</strong>.</li><li data-start="1351" data-end="1455">Collaborate with DevOps to ensure high availability, monitoring, CI/CD, and infrastructure automation.</li><li data-start="1458" data-end="1554">Mentor and guide other developers through code reviews, design sessions, and pair programming.</li><li data-start="1557" data-end="1644">Participate in planning, estimation, and architectural discussions with stakeholders.</li><li data-start="1647" data-end="1755">Drive innovation by evaluating and implementing new technologies that improve reliability and performance.</li><li data-start="1758" data-end="1830">Ensure system security, performance, scalability, and maintainability.</li></ul><p><strong>Requirements:</strong></p><ul><li data-start="1884" data-end="1989">8+ years of software development experience, with at least 5 years focused on <strong data-start="1962" data-end="1975">.NET Core</strong> and <strong data-start="1980" data-end="1986">C#</strong>.</li><li data-start="1992" data-end="2116">Strong understanding of <strong data-start="2016" data-end="2042">object-oriented design</strong>, <strong data-start="2044" data-end="2074">domain-driven design (DDD)</strong>, and <strong data-start="2080" data-end="2102">clean architecture</strong> principles.</li><li data-start="2119" data-end="2204">Deep experience in developing <strong data-start="2149" data-end="2165">RESTful APIs</strong>, microservices, and backend systems.</li><li data-start="2207" data-end="2256">Proficiency with <strong data-start="2224" data-end="2242">Azure services</strong>, including:</li><li data-start="2261" data-end="2330"><strong data-start="2261" data-end="2277">App Services</strong>, <strong data-start="2279" data-end="2298">Azure Functions</strong>, <strong data-start="2300" data-end="2313">Azure SQL</strong>, <strong data-start="2315" data-end="2328">Cosmos DB</strong></li><li data-start="2335" data-end="2415"><strong data-start="2335" data-end="2354">Azure Key Vault</strong>, <strong data-start="2356" data-end="2372">Azure DevOps</strong>, <strong data-start="2374" data-end="2395">Azure Service Bus</strong>, <strong data-start="2397" data-end="2413">Blob Storage</strong></li><li data-start="2418" data-end="2488">Strong experience with <strong data-start="2441" data-end="2466">Entity Framework Core</strong> and <strong data-start="2471" data-end="2485">SQL Server</strong>.</li><li data-start="2491" data-end="2582">Solid understanding of <strong data-start="2514" data-end="2523">CI/CD</strong>, <strong data-start="2525" data-end="2553">unit/integration testing</strong>, and deployment pipelines.</li><li data-start="2585" data-end="2682">Experience with <strong data-start="2601" data-end="2629">asynchronous programming</strong>, <strong data-start="2631" data-end="2649">multithreading</strong>, and performance optimization.</li><li data-start="2685" data-end="2744">Excellent problem-solving skills and attention to detail.</li></ul><p><strong>Desirable:</strong></p><ul><li data-start="2811" data-end="2924">Experience with <strong data-start="2827" data-end="2856">event-driven architecture</strong> and <strong data-start="2861" data-end="2879">message queues</strong> (e.g., Azure Event Grid, Kafka, RabbitMQ).</li><li data-start="2927" data-end="2991">Knowledge of <strong data-start="2940" data-end="2960">containerization</strong> and <strong data-start="2965" data-end="2979">Kubernetes</strong> in Azure.</li><li data-start="2994" data-end="3097">Familiarity with monitoring tools like <strong data-start="3033" data-end="3057">Application Insights</strong>, <strong data-start="3059" data-end="3076">Log Analytics</strong>, or <strong data-start="3081" data-end="3094">New Relic</strong>.</li><li data-start="3100" data-end="3149">Background working in Agile/Scrum environments.</li><li data-start="3152" data-end="3223">Experience in fintech, e-commerce, SaaS, or other high-scale platforms.</li></ul><p><strong>Advanced English:</strong></p><ul><li>Excellent verbal and written communication skills in English.</li></ul>