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helenanevesdeveloper/README.md

Helena Bueno

Full Stack Systems Analyst | Python, Django, REST APIs, ETL, Requirements and Data Modeling

Rio de Janeiro, Brazil | LinkedIn: https://www.linkedin.com/in/hn-full-stack-development/ | GitHub: https://github.com/helenanevesdeveloper

Professional Summary

Full Stack Systems Analyst with over 4 years of experience delivering software and automation solutions for Petrobras, Infosys and Siemens Healthineers. Connects business and engineering through requirements discovery, domain and data modeling, REST API development, metadata-driven ETL and technical documentation. Experienced with Python, Django, React, TypeScript, SQL, AWS, automated testing and CI/CD in Scrum and SAFe teams; fluent in English.

Core Skills

  • Systems Analysis: Requirements gathering, functional and non-functional requirements, business rules, user journeys, user stories, acceptance criteria, domain modeling, data modeling, reverse engineering, technical documentation
  • Back-End and APIs: Python, Django, REST APIs, OpenAPI/Swagger, Node.js
  • Front-End: React, Next.js, TypeScript, JavaScript, HTML, CSS, UI/UX implementation
  • Data and Integration: ETL, metadata-driven architecture, SQL, Oracle Database, PostgreSQL, SQLite, Pandas
  • Testing, Security and Quality: Pytest, Jest, unit testing, SonarQube, Checkmarx, SOLID, Clean Code, Domain-Driven Design (DDD)
  • Cloud, DevOps and Delivery: AWS, CloudWatch, Parameter Store, Docker, GitHub Actions, Jenkins, CI/CD, Git, GitLab, Jira, Scrum, SAFe
  • Artificial Intelligence and Automation: GitHub Copilot CLI, Claude Code, Codex, faster-whisper, transcription automation, summarization, and technical documentation in Markdown

Professional Experience

Full Stack Systems Analyst

Global Hitss / Petrobras | Remote | April 2025 - Present

  • Structured software projects from inception, translating undocumented business rules into functional and non-functional requirements, user journeys, domain and data models, state flows and acceptance criteria.
  • Developed a local AI documentation workflow with GitHub Copilot CLI and faster-whisper, converting 12 meeting recordings into searchable, version-controlled Markdown with timestamped summaries and visual evidence, saving approximately 75 hours of review and manual documentation.
  • Troubleshoot issues across AWS environments with CloudWatch and Parameter Store and deploy solutions through GitHub Actions CI/CD pipelines.
  • Apply layered architecture, DDD, SOLID and Clean Code while collaborating with Product Owners, developers and quality engineers in Scrum and SAFe ceremonies.

Full Stack Systems Analyst

IBM / Petrobras | Remote | May 2023 - April 2025

  • Reverse-engineered and mapped 6 production API endpoints and translated the impact analysis into an implementation plan and 8 user stories with acceptance criteria, dependencies and regression risks.
  • Developed a metadata-driven ETL architecture covering 12 entities across 3 heterogeneous data sources, using database configuration, recursive dependencies and runtime association keys for legacy relationships across database boundaries.
  • Reviewed hard-coded credentials, CSRF, CORS, SQL Injection and Log Injection vulnerabilities, increasing Security Hotspots reviewed, remediated or marked as safe from 0% to 75%.
  • Increased overall SonarQube code coverage by 20% through unit testing with Pytest.
  • Coordinated a SQLite-to-Oracle migration, implemented persistent API interaction logs and created endpoint diagrams and knowledge-sharing materials to improve diagnostics and standardize maintenance.

RPA Support

IAS / Infosys / Siemens Healthineers | Remote | October 2021 - May 2023

  • Served as the client-facing technical focal point, resolving issues in real time in Portuguese and English.
  • Monitored 43 automation processes in UiPath Orchestrator and analyzed operational data with Excel.
  • Prepared and maintained 42 virtual machines and their dependencies.

Education

Computer Systems | Universidade Federal Fluminense (UFF) | Rio de Janeiro, Brazil | August 2021 - June 2026

Certifications and Courses

AWS Introduction to Cloud 101 (2024) | Docker: Absolute Beginner (O'Reilly, 2024) | DevOps Key Concepts (O'Reilly, 2024) | Introduction to Django (O'Reilly, 2024) | ReactJS Beginner Masterclass (O'Reilly, 2024)

Languages

Portuguese: Native | English: Fluent

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