Professional Experience

Summary

Izabela Apolinário

Backend .NET Engineer with strong experience in designing and building scalable systems, RESTful APIs, and complex integrations. Proven ability to develop backend applications from scratch, structure robust architectures, and ensure high performance and data consistency. Experienced in working across multiple products, implementing business-critical features, and improving system reliability. Solid foundation in software engineering principles, API design, and distributed systems. Focused on delivering maintainable, high-performance, and production-ready backend solutions.

  • Belo Horizonte, Minas Gerais, Brazil
  • +55 (31) 98543-0213
  • apolinario.izabela@gmail.com

Education

Associate Degree in Systems Analysis & Development

Feb 2023 – Jun 2025

Pontifical Catholic University of Minas Gerais (PUC Minas)

Bachelor’s in Computer Science

Jun 2023 – Jun 2026 (expected)

Descomplica University

Professional Development in Full Stack & Systems Analysis

Apr 2024 – Dec 2025

Infinity School, Prodabel, Microsoft Azure

Professional Experience

Backend .NET Engineer

Oct 2025 – Present

Brunsker Tecnologia

  • Designed and developed backend systems from scratch using C# and .NET.
  • Built and maintained RESTful APIs for system communication and integrations.
  • Implemented integrations with third-party services, including payment and communication platforms.
  • Worked across multiple products, delivering new features and maintaining system stability.
  • Structured backend services, endpoints, and data flows.
  • Implemented complex business rules ensuring data integrity and consistency.
  • Optimized database queries and improved system performance.
  • Analyzed and resolved production issues focusing on reliability.
  • Provided technical support and guidance to junior developers.

Software Engineer (Freelance & Consulting)

2019 – Present

Self-employed / Remote – Ivorya Soluções Digitais

  • Designed and developed custom backend systems and web applications.
  • Built APIs and integrated third-party services for automation and data exchange.
  • Developed systems for monitoring, dashboards, and process automation.
  • Implemented data-driven solutions and reporting tools.
  • Provided technical consulting, translating business needs into scalable software solutions.

IT and Infrastructure Intern

Mar 2024 – Jun 2025

Apta Sistemas de Automação Industrial

  • Designed and developed the License Manager system using C#, .NET, and Angular.
  • Contributed to internal systems (Slock, Aerocina, Fundouro) with new features and UI improvements.
  • Maintained and deployed systems both on local intranet and AWS cloud.
  • Created user guides, documentation, and test plans.
  • Performed manual QA testing and version control with Git.
  • Managed databases using DBeaver for queries, backups, and recovery.
  • Provided internal support, hardware maintenance, and inventory management.
  • Presented internal tech talks to improve team knowledge sharing.

Support Analyst

Aug 2023 – Dec 2023

S&I Automação Comercial

  • Provided technical support and training for ERP systems (Syspdv, Varejo Fácil).
  • Configured fiscal systems like NF-e and SPED.
  • Managed Firebird and SQL Server databases.
  • Supported clients via phone, WhatsApp, and email.
  • Resolved software, tax, and system integration issues.

IT Intern

Jun 2023 – Dec 2023

Núcleo Assistencial Caminhos para Jesus

  • Developed systems in C# and built websites using HTML, CSS, JavaScript, and PHP.
  • Managed MySQL databases through phpMyAdmin.
  • Maintained computer systems and installed essential software.
  • Interacted with TOTVS systems to extract data and generate reports.
  • Customized system features based on department-specific requirements.

Commercial Assistant & Technical Support

Oct 2023

S1 Info Tecnologia

  • Managed system APIs and databases (SQL Server, TOTVS, Hiper).
  • Trained customers and provided technical support for CRM systems.
  • Performed client outreach via phone and email for marketing purposes.
  • Assisted sales team in aligning tech solutions with client needs.