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Vinicius Duarte Mendes Nepomuceno

@viniciusduartemendes

Senior Backend Software Engineer at Terminal evaluating AI-generated code explanations; previously built Mercado Pago services processing 8–10 million Visa transactions daily.

Canada
Message

At Terminal, I evaluate AI-generated commit messages and pull request descriptions against code diffs, problem statements, and test results. I fact-check model claims and provide evidence-based preference judgments that feed into model training.

At Mercado Libre — Mercado Pago, I designed and maintained Go and Java microservices on AWS that processed 8–10 million Visa transactions daily across four countries. I also built a BigQueue retry system that recovered around 200,000 failed messages per day with zero message loss; at BRQ — Client: Itaú Unibanco, I built serverless Go and Python services for a bank-wide AWS migration platform.

Experience

Work history, roles, and key accomplishments

TE
Current

Senior Software Engineer, AI Code Review

Terminal

Sep 2026 - Present (1 month)

Evaluates AI-generated commit messages and pull request descriptions against code diffs, problem statements, and test results, scoring Content, Readability, and Faithfulness. Produces pairwise preference judgments with evidence-based rationales for model training.

Mercado Libre logoML

Software Engineer (Semi-Senior)

May 2022 - Oct 2025 (3 years 5 months)

Designed and maintained fault-tolerant Go and Java microservices on AWS using event-driven architecture, processing 8–10 million Visa card transactions daily across four countries. Built a retry-queue system with BigQueue that recovers and reprocesses ~200K failed messages per day with zero message loss.

IBM logoIB

Full Stack Developer (Internal Systems)

Feb 2020 - Sep 2020 (7 months)

Built an internal HR management system using Java and Angular, used across IBM Brazil and later rolled out to IBM Mexico. Delivered across the full SDLC in an Agile/Scrum team.

Education

Degrees, certifications, and relevant coursework

Seneca Polytechnic logoSP

Seneca Polytechnic

Master of Artificial Intelligence Design & Development, Artificial Intelligence

2026 -

Pursuing a Master of Artificial Intelligence Design & Development, expected to complete in December 2027.

FIAP logoFI

FIAP

Postgraduate Specialization, Software Architecture

2024 - 2025

Completed a postgraduate specialization in Software Architecture from January 2024 to March 2025.

Centro Universitário Senac logoCS

Centro Universitário Senac

Bachelor of Information Systems, Information Systems

2019 - 2022

Earned a Bachelor of Information Systems from January 2019 to December 2022.

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