Marcela Oliveira
São Paulo
Summary
I am a Software Engineer with over 10 years of experience, dedicated to finding simple solutions to complex problems. Throughout my career, I have primarily worked with .NET, C#, and relational databases (Oracle Database) in the development of scalable web application solutions aligned with each client’s business context.
Always focused on applying the simplest solutions with lower maintenance costs, I apply Design Patterns when needed and leverage key industry standards and concepts such as SOLID, Clean Code, DDD, and TDD. Continuous improvement and delivery (CI/CD) with Git and DevOps are part of my daily routine, and I also perform code reviews and pair programming.
Overview
19
19
years of professional experience
1
1
Certification
Work History
Software Architect
Basis and Stefanini Brasil at ANP (Agencia Nacional do Petróleo)
08.2022 - Current
- I lead and guide development teams in applying software engineering best practices, leveraging my solid expertise in Object-Oriented Programming, Design Patterns, SOLID principles, Clean Code, and Domain-Driven Design (DDD).
- I have experience in defining corporate and project architectural standards, always striving for solutions that balance business strategy with maintenance costs.
- After a cyberattack, I led the urgent development of a solution that enabled external agents (gas stations) to access critical applications. This delivery was essential for ensuring their companies remained legally authorized to operate nationwide, safeguarding business continuity during a critical moment.
Senior Software Engineer
Imagem Geosistemas
12.2018 - 08.2022
- Analysis and development of geoprocessing systems, delivering corporate and scalable solutions across sectors such as AMN, Vale do Rio Doce, and Petrobras, integrating .NET systems with the ESRI platform.
- At Petrobras, designed and implemented a predictive analysis system processing real-time data generated by vessels.
- Developed a Windows Service to collect and store data in an Oracle database.
- Created a .NET Core Web API to centralize business logic.
- Built a frontend in Angular fully decoupled from the backend, offering flexibility in data visualization.
- Result: Reduced operational time and eliminated the need for onboard specialized staff.
- Conducted business process analysis (BPM) for all Geodesy teams at Petrobras.
- Proposed the corporate use of Jira (already licensed).
- Coordinated Jira's implementation for activity management across all teams.
- Customized workflows and trained users to maximize adoption.
- Result: Optimized processes, reduced costs, and improved managerial analysis.
- Regularly engaged with key stakeholders to gather requirements and deliver aligned solutions.
- Technologies: .NET Core, Oracle, Angular, Angular Material, REST APIs, Python, Dojo, Object-Oriented Analysis, Automated Testing (unit & integration).
Software Engineer
Trafega
08.2017 - 12.2018
- At a travel-tech startup, I led the design and development of a sales platform for tickets and travel packages.
- Using C#, REST APIs, Angular, and Ionic, I created a scalable architecture fully integrated with major providers such as SABRE, TravelHub, and RexTour.
- Delivered an end-to-end solution — from availability search to reservation and ticket issuance — enabling the startup to quickly launch a competitive product in the tourism market.
Software Engineer
Eco Sistemas
01.2015 - 03.2016
- Case 1 – Healthcare ERP Integration
- Challenge: Public hospitals needed to consolidate exam results from different laboratories into a single ERP system. The difficulty was that each lab used its own communication protocol.
- Action: I designed and implemented an integration application using Factory Method and reflection in C#. This approach allowed the system to automatically recognize the correct class and generate the appropriate object for each lab.
- Result: The solution enabled the ERP to seamlessly display exam results from multiple laboratories, improving efficiency in the healthcare process and supporting better patient care in the public health network.
- Case 2 – Data Cleansing with Lucene.Net
- Challenge: A government agency faced major issues with duplicate personal records in a very large national database, impacting data reliability.
- Action: Conducted architectural analysis and development of a solution leveraging Lucene.Net to identify, match, and cleanse duplicate data.
- Result: Significantly improved data quality, enabling more accurate reporting and decision-making for government programs.
- Case 3 – ERP Modernization
- Challenge: A large ERP required module upgrades to support new business and technical requirements.
- Action: Performed architectural analysis and implementation for updating key modules using ASP.NET MVC, WCF, SQL Server, Entity Framework, SOLID and DDD concepts.
- Result: Delivered a modernized ERP with improved maintainability, scalability, and user experience, aligned with the company’s evolving needs.
Software Engineer
Petrobras
08.2010 - 01.2015
- At Atos and Spassu, I worked across the full software development lifecycle — from requirements gathering and technical specification to architecture design, data modeling, coding, and deployment.
- I applied DDD and TDD to ensure software quality and maintainability, while defining an architecture that promoted code reusability through the use of design and architectural patterns.
- Using Agile (SCRUM), our team delivered scalable and reliable solutions for enterprise systems.
Software Engineer
Marlin
01.2007 - 08.2009
- I began my career as an intern in e-commerce systems development, where I gained hands-on experience with the .NET Framework, C#, ASP, and SQL Server.
- This role gave me the opportunity to work directly with clients, understanding their business needs, and also to collaborate remotely for one year, at a time when home office was still uncommon. This experience strengthened my communication and teamwork skills in distributed environments, while accelerating my technical and professional growth.
Education
No Degree - Software Architecture
Desenvolvedor.IO
Rio De Janeiro, Brazil07-2025
No Degree - Docker Do Zero Ao Avançado
Desenvolvedor.IO
Rio De Janeiro, Brazil12-2024
No Degree - Programando Com Python
KaSolution
Rio De Janeiro, Brazil02-2021
Designing and Implementig a Data Science Solution on Azure (DP 100), Tecnologia da Informação
KaSolution
01.2020
MIT Professional Certificate - Software Architecture, Information Technology
Instituto Infnet
01.2015
Bacharelado - Sistemas de Informação, Tecnologia da Informação
Universidade Estácio de Sá
01.2007
Skills
- Software Architecture
- Domain-Driven Design (DDD)
- SOLID Design Principles
- CI/CD
- NET
- Angular
Certification
Exam 486: Developing ASP.NET MVC Web Applications
Languages
Portuguese (Native or Bilingual)
Inglês (Full Professional)
Timeline
Software Architect
Basis and Stefanini Brasil at ANP (Agencia Nacional do Petróleo)
08.2022 - Current
Senior Software Engineer
Imagem Geosistemas
12.2018 - 08.2022
Software Engineer
Trafega
08.2017 - 12.2018
Software Engineer
Eco Sistemas
01.2015 - 03.2016
Software Engineer
Petrobras
08.2010 - 01.2015
Software Engineer
Marlin
01.2007 - 08.2009
Designing and Implementig a Data Science Solution on Azure (DP 100), Tecnologia da Informação
KaSolution
Bacharelado - Sistemas de Informação, Tecnologia da Informação
Universidade Estácio de Sá
No Degree - Software Architecture
Desenvolvedor.IO
No Degree - Docker Do Zero Ao Avançado
Desenvolvedor.IO
No Degree - Programando Com Python
KaSolution
MIT Professional Certificate - Software Architecture, Information Technology
Instituto Infnet