Lucas Paineli Gimenes

Fullstack .NET Developer | C#, ASP.NET Core, Oracle | REST APIs · Clean Architecture · AI in the workflow

[email protected] | linkedin.com/in/paiineli | github.com/paiineli

About

Fullstack .NET Developer with 6 years in technology, working with C#, ASP.NET Core, .NET Framework and Oracle Database in healthcare web systems that need to run all the time.

Day-to-day I work across the full stack: data modeling and optimization in Oracle with SQL and PL/SQL, building and consuming REST APIs, and front-end development with HTML5, CSS3, JavaScript, Bootstrap and Razor. I apply Clean Architecture, SOLID and Design Patterns, participate in code reviews, and version control via Git and Azure DevOps.

I use AI seriously at work. GitHub Copilot, Claude and Cursor are part of my daily flow for writing, reviewing and debugging code faster. Not as a replacement for thinking, but as a tool that speeds up delivery without compromising quality.

I hold a Specialization in Software Architecture from Facens (GPA 9.6/10) and an Executive MBA in Business Management from FGV. I'm looking for a mid-level or software engineer position in .NET, preferably at companies with larger data volumes and systems with critical availability requirements.

Experience

Web Programmer Analyst Jr — Unimed Sorocaba Oct 2024 – Present

I develop and maintain healthcare web systems in C# and .NET, working daily across the full stack from the data layer to the front-end.

  • Back-end development in C# with ASP.NET Core and .NET Framework, applying Clean Architecture, SOLID and Design Patterns.
  • Building and consuming REST APIs integrated with clinical and operational workflows.
  • Writing and optimizing queries, stored procedures, triggers and PL/SQL functions on Oracle Database.
  • Front-end development with HTML5, CSS3, JavaScript, Bootstrap and Razor.
  • Participating in code reviews with the team.
  • Using GitHub Copilot, Claude and Cursor in the daily workflow to speed up and review code.
  • Version control with Git, TFS and Azure DevOps.

Stack: C# · ASP.NET Core · .NET Framework · Oracle Database · SQL/PL/SQL · REST APIs · HTML5 · CSS3 · JavaScript · Bootstrap · Razor · Azure DevOps · Git · TFS

PACS Systems Analyst — Unimed Sorocaba Feb 2023 – Sep 2024

Administration of hospital PACS, RIS and HIS systems, focused on Oracle database and advanced technical support in production.

  • Wrote and optimized SQL and PL/SQL scripts for process automation and data extraction.
  • Worked on query performance in high-volume data environments.
  • Acted as N3 escalation point for complex integration and performance failures.
  • Assisted in the administration of Linux and Windows servers, including recovery routines.
  • Accompanied the team and vendors during upgrades and patch deployments.

Stack: Oracle Database · SQL/PL/SQL · Linux · Windows Server

PACS Technical Support Assistant — Unimed Sorocaba Jun 2021 – Jan 2023

N2 and N3 technical support for over 300 healthcare professionals in a high-availability environment.

  • Diagnosed and resolved incidents related to medical image viewing, storage and transmission.
  • Configured and maintained workstations and imaging modalities, including CT, MRI and X-Ray.
  • Assisted in the administration of Linux and Windows servers.
IT Intern — Instituto de Diagnósticos de Sorocaba Oct 2020 – Jun 2021

N1 and N2 technical support, installation and maintenance of internal systems, basic Windows Server and Active Directory administration.

Education

Executive MBA in Business Management — Fundação Getulio Vargas (FGV) | Jan 2025 – May 2026
Specialization in Software Architecture — Centro Universitário Facens | Feb 2023 – May 2025 | GPA: 9.6/10
Associate Degree in Systems Analysis and Development — UNIP

Certifications

Foundational C# with Microsoft — Microsoft / freeCodeCamp | Mar 2026
English Semi Intensive Program (Advanced 2) — OHLA Schools, Miami | Apr 2026

Languages

Portuguese — native  |  English — advanced

Skills

C#, ASP.NET Core, .NET Framework, Oracle Database, SQL, PL/SQL, REST APIs, Clean Architecture, SOLID, Design Patterns, Clean Code, Entity Framework, Azure DevOps, Git, JavaScript, HTML5, CSS3, Bootstrap, Razor, SQL Server, Azure SQL, Scrum, Code Review, Linux, Windows Server, TFS