Marcelo Gehlen
Ceará
Summary
Results-driven Senior Software Engineer with expertise in backend development using C# and .NET. Skilled in building scalable APIs, integrating systems, and automating processes. Experienced with Clean Architecture, DDD, microservices, SQL Server, PostgreSQL, Azure, Docker, and CI/CD. Delivered impactful solutions, including a logistics integration project awarded by Dell. Seeking an international opportunity in backend engineering and cloud solutions.
Overview
2
2
Languages
5
5
years of professional experience
Work History
Senior Software Engineer
Dell Technologies
São Paulo, Brazil
02.2022 - 03.2025
- Developed backend solutions and integrations for sales, compliance, and order-processing operations, enhancing system reliability and operational effectiveness.
- Automated business-critical workflows using C#, .NET, SQL Server, T-SQL and REST/XML/JSON integrations, reducing manual effort, improving data accuracy and accelerating access to operational information.
- Developed backend solutions and integrations supporting critical sales, compliance and order-processing operations:
- Integrated APIs, legacy systems, and database routines using REST, XML, JSON, SQL Server, and T-SQL, enabling consistent end-to-end workflows for sales and order-processing teams.
- Integrated APIs, legacy systems, database routines and business rules using REST, XML, JSON, SQL Server and T-SQL, creating more consistent end-to-end flows for sales and order-processing teams.
- Mapped data flows, investigated failures, and coordinated with external providers and global teams for contingency and incident-response initiatives, preserving continuity of critical business operations.
- Skills: .NET Core, .NET Framework, SQL Server, Azure
Software Engineer
Geen - Grupo Europa
Espirito Santo, Brazil
05.2021 - 02.2022
- Developed and enhanced internal applications to support key operational and business processes.
- Refactored internal system components using .NET Core, replacing fragile implementations with cleaner and more maintainable backend structures.
- Improved application performance and stability by simplifying business rules, optimizing backend routines and reviewing PostgreSQL queries and database flows.
- Maintained and evolved web applications using C#, PostgreSQL, REST APIs and JavaScript, delivering fixes and features that improved reliability for internal users.
- Investigated recurring system issues through code analysis, debugging and database validation, reducing operational disruptions and making applications easier to support.
- Transformed user feedback and business requirements into effective system improvements, streamlining workflows and enhancing usability of internal tools.
- Skills: .NET Core, PostgreSQL, Javascript
Software Engineer
Pointer do Brasil
Rio Grande do Sul, Brazil
11.2019 - 05.2021
- Refactored internal system components using .NET Core, replacing fragile implementations with cleaner and more maintainable backend structures.
- Improved application performance and stability by simplifying business rules, optimizing backend routines and reviewing PostgreSQL queries and database flows.
- Maintained and evolved web applications using C#, PostgreSQL, REST APIs and JavaScript, delivering fixes and features that improved reliability for internal users.
- Maintained and evolved web applications with C#, PostgreSQL, REST APIs, and JavaScript, implementing fixes and features that bolstered reliability for internal users.
- Translated user feedback and business requirements into practical system improvements, streamlining workflows and increasing the usability of internal tools.
- Translated user feedback and business requirements into actionable system improvements, streamlining workflows and enhancing usability of internal tools.
- Skills: .NET Core, .NET Framework, T-SQL, SQL Server, Javascript
Education
BSc - Industrial Engineering
Universidade De Passo Fundo
Brazil01-2019
Visiting International Student Program - Engineering
University of Wisconsin - Madison
USA01-2015
Skills
- Web application development
- Cloud architecture
- Microservices architecture
- Programming
- Software development
- Cloud architecture
- Cloud services
- Agile methodologies
Accomplishments
Implemented backend integrations and fiscal workflows using C#, .NET, SQL Server and APIs, enabling compliance with São Paulo’s CAT 31/2019 regulation and supporting inventory and delivery operations through third-party logistics providers. The project received a Game Changer award for its business impact.
Languages
English: Full professional proficiency
Portuguese: Native
Timeline
Senior Software Engineer
Dell Technologies
02.2022 - 03.2025
Software Engineer
Geen - Grupo Europa
05.2021 - 02.2022
Software Engineer
Pointer do Brasil
11.2019 - 05.2021
Visiting International Student Program - Engineering
University of Wisconsin - Madison
BSc - Industrial Engineering
Universidade De Passo Fundo