Marco Túlio Costa

Senior Software Engineer | Tech Lead | Cloud & Distributed Systems

Professional Summary

Software Engineer with strong expertise in C#, .NET, and Azure, leading technical delivery in business-critical enterprise applications, including systems subject to SOX controls and integrations with SAP. Experienced in defining solutions and architecture while remaining hands-on, with experience in system modernization, .NET version upgrades, NoSQL-to-SQL database migrations, and restructuring integrations and distributed workflows.

Professional Experience

Accenture Brazil

Software Engineer / Tech Lead

Jul 2023 - Present
  • Led technical delivery in critical corporate applications using C#, .NET, Azure, and React, acting as the technical reference for a team of 4 engineers from solution definition through production go-live
  • Built an internal backend and frontend framework with reusable .NET and React components and patterns, adopted across four applications and resulting in an approximately 40% reduction in project startup time
  • Led the migration from Cosmos DB to SQL Server, contributing to relational modeling, application restructuring, and technical direction of the team throughout the transition
  • Led the redesign of distributed workflows integrated with SAP, reviewing the architecture across the application, queues, and services to simplify the flow and make the solution easier to maintain and evolve
  • Led the technical adaptation of a business-critical application to meet SOX compliance controls, coordinating technical changes and cross-team dependencies
  • Modernized Azure Functions applications from .NET 6 to .NET 10, assessing technical dependencies and infrastructure impacts to enable the upgrade within a short timeframe
  • Led the technical development of a new corporate application from inception, guiding a team of 2 engineers through requirements gathering, architecture, delivery prioritization, development, and client engagement

Fila Digital

Backend Developer

Dec 2021 - Nov 2022
  • Led the infrastructure migration from Kubernetes to Google Cloud Run, eliminating infrastructure idle time and reducing operational costs by approximately 35%.
  • Developed a scheduled notification system using Google Cloud Tasks and Cloud Functions
  • Contributed to backend evolution and system scalability improvements
  • Introduced and applied Clean Architecture principles

Liven Tech

Product Manager

Jun 2021 - Dec 2022
  • Managed cross-functional teams (engineering, QA, product) delivering SaaS solutions
  • Led product planning, backlog prioritization, and delivery coordination
  • Defined product requirements and aligned technical solutions with business goals
  • Worked closely with stakeholders to keep deliveries on time and within scope

Serasa Experian

Python RPA Developer

Nov 2018 - Jun 2021
  • Developed automation solutions using Python, Selenium, and web automation tools
  • Contributed to global projects, collaborating with teams across Europe and Latin America
  • Trained and mentored new team members in automation practices
  • Participated in digital transformation initiatives within financial operations

Technical Skills

Languages

C#, JavaScript, TypeScript, Python, Java

Frontend

React, React Native, JavaFX

Backend

.NET (ASP.NET Core, Serverless), Node.js

Cloud & Infrastructure

Azure (Functions, Messaging, Monitoring), Google Cloud Platform, Docker, Kubernetes, Terraform (IaC)

Architecture & Practices

Clean Architecture, Event-driven Architecture, Microservices, CI/CD

Databases

SQL and NoSQL databases (relational and document-oriented)

AI & Productivity

GitHub Copilot, Prompt Engineering, AI-assisted development workflows

Education

Bachelor's Degree in Computer Science

Universidade Federal de Lavras (UFLA)

2015 - 2021

Technical Degree in Electrotechnics

Escola Técnica Estadual de Furnas (ETEF)

2013 - 2014

Professional Course in Web Design

Instituto Federal do Sul de Minas (IFSul)

2013

Talks & Community

  • Delivered a talk on Clean Architecture for software developers (2024)
  • Delivered a talk on technology careers for Computer Science students (2024)
  • Conducted talks and workshops on Web Development and React (2015-2020)

Certifications

  • Microsoft Certified: Azure Fundamentals
  • Kanban Practitioner Certified
  • Yellow Belt Lean Six Sigma

Languages

  • Portuguese — Native
  • English — Advanced / Professional Working Proficiency
  • Spanish — Advanced / Professional Working Proficiency