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Marcelus Trojahn is a seasoned software engineer with extensive experience across various roles in technology companies. Currently serving as a Senior Software Engineer at Cloud5 Communications since September 2022, Marcelus has evaluated low-code platforms and maintained legacy systems using PHP and MySQL within AWS RDS. Previous roles include Senior Back End Engineer at Juros Baixos, where a legacy Node.js API was refactored to Kotlin, and Back End Engineer/ETL Engineer at Risknow.ai, focusing on ETL pipeline development with Python and PostgreSQL. Marcelus's expertise also includes developing SaaS applications and REST APIs, leading a team to create custom solutions as the Founder and Lead Developer at AGT Desenvolvimento de Sistemas, and managing large-scale networks in various managerial capacities from 2000 to 2018. Experience in technical support and automation script development complements Marcelus's diverse skill set in software engineering and network management.