Jefferson Venceslau
Software Developer at Mercado Bitcoin
Paraná, Brazil
Summary
🤩
Rockstar🎓
Top SchoolJefferson Venceslau is a software developer with seven years of experience bridging infrastructure, support, and backend engineering across fintech and healthcare environments in Brazil. He began his career installing security systems and managing PBX and structured cabling, later overseeing and optimizing cryptocurrency mining farms before transitioning into software and infrastructure roles. Currently at Mercado Bitcoin, he combines hands-on operational expertise with software development skills, having contributed to open-source TypeScript improvements in the popular BrasilAPI/cep-promise project. Comfortable in fast-moving, high-availability contexts, he has a track record of improving maintainability and type safety in production code. Pragmatic and resourceful, Jefferson pairs field-level systems knowledge with formal software engineering training toward reliable, production-ready solutions.
7 years of coding experience
1 year of employment as a software developer
Bacharelado, Computer Software Engineering, Bacharelado, Computer Software Engineering at Ampli
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (8)
ceph10
typescript10
javascript10
typescripts10
typescript-types10
nodejs8
co5
browser5
Programming languages (5)
Github contributions (5)
BrasilAPI/cep-promise
Dec 2021 - Mar 2022
Busca por CEP integrado diretamente aos serviços dos Correios, ViaCEP e outros (Node.js e Browser)
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 reviews, 5 commits, 1 PR in 3 months
Contributions summary:Jefferson primarily focused on refining the TypeScript definitions file (`index.d.ts`) for the `cep-promise` library. Their contributions included fixing minor typos, addressing a workaround related to ES module interoperability, and refactoring the code to utilize an `enum` for available providers. They also updated the configurations interface, making them optional. These changes suggest an effort to improve the code's type safety and maintainability.
browsercorreiospornode-jsjavascript
z22092/fast-uuidv4
Mar 2021 - Sep 2022
Hardware-accelerated uuidV4 gen
Contributions:23 PRs, 64 pushes, 10 branches in 1 year 5 months
uuid-generatoruiduuidv4acceleratedidentifier
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