Jefferson De Almeida Costa
Tech Lead at Mercado Livre
Brazil
Summary
👤
Senior🎓
Top SchoolJefferson De Almeida Costa is a Tech Lead with 8 years of experience delivering back-end systems in Golang and Java, specializing in distributed microservices, CQRS/event-sourcing, and event-driven architectures that handle high data volumes. He combines strong hands-on engineering—Hexagonal/Clean Architecture, SOLID, PL/SQL tuning, DynamoDB and ElasticSearch—with a deep analytics background across data warehouses, dimensional models, ETL and visualization. At Mercado Livre he leads delivery under tight deadlines, translating complex business needs into production-ready, scalable services and data pipelines. Certified in advanced Oracle PL/SQL, Scrum, ITIL and privacy foundations, he brings both operational rigor and privacy-aware design to systems. A practical problem-solver, he pairs low-level SQL/PLSQL optimization experience with modern cloud patterns like S3 file handling and Pub/Sub to squeeze performance from mixed relational and NoSQL environments.
8 years of coding experience
5 years of employment as a software developer
Fédération Internationale de l'Art PhotographiqueBacharelado em Ciência da Computação Tecnologia da Informação, Bacharelado em Ciência da Computação Tecnologia da Informação at Universidade Federal do TocantinsPós-graduação Lato Sensu Liderança Técnica Tecnologia da Informação, Pós-graduação Lato Sensu Liderança Técnica Tecnologia da Informação at Full Cycle
Portuguese, English, Spanish
Github Skills (1)
go1
Programming languages (1)
Github contributions (5)
jeffersonto/feira-api
Sep 2022 - Oct 2022
Contributions:49 commits, 38 PRs, 33 pushes in 22 days
jeffersonto/lge-cockpit
Jun 2026 - Jul 2026
Contributions:2 PRs, 2 pushes, 3 branches in 5 days
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