Jossie Castrillo
Senior Software Engineer II at Allied Global Technology Services
San Sebastián, Puerto Rico, United States
Summary
👤
Senior🎓
Top SchoolJossie Castrillo is a Senior Software Engineer II with nine years of experience building cloud-native, enterprise-grade applications using C# .NET, Azure, TypeScript/Angular, and both SQL and NoSQL databases. Based in San Sebastián, Puerto Rico, he combines hands-on backend engineering with microservices architecture and third-level technical support, often acting as a technical lead and mentor within agile teams. He contributes to open-source compiler tooling—having implemented a C-style preprocessor for a PLY-based project—and brings practical compiler and lexical-analysis experience that complements his cloud and web expertise. As an organizer of Cloud Native Guatemala and a technology instructor at Edutek Latam, he actively fosters community learning and talent development. His background teaching cloud networking and infrastructure at Universidad de San Carlos de Guatemala informs a strong operational perspective on security, IAM, VPC, and automation with CloudFormation. Jossie is known for translating complex requirements into maintainable solutions and promoting testing and development best practices across teams.
9 years of coding experience
4 years of employment as a software developer
Especialización en Administración Tecnológica, Especialización en Administración Tecnológica at Universidad de San Carlos de Guatemala
Spanish, English
Github Skills (8)
ply10
c-preprocessor10
parser10
lexical-analysis10
python10
compiler-construction9
grammars9
grammar9
Programming languages (5)
Github contributions (5)
tytusdb/tytusdb
Dec 2020 - Jan 2021
Role in this project:
Back-end Developer
Back-end DeveloperContributions:28 commits, 18 PRs in 1 month
Contributions summary:Jossie primarily contributed to the development of a C-style preprocessor for the PLY (Python Lex-Yacc) library, as evidenced by the code changes in `cpp.py`. The commits show the implementation of lexical analysis rules for various C preprocessor tokens, including identifiers, integers, floats, strings, comments, and preprocessor directives such as `#`. Further contributions included the addition of a grammar definition file and integration of functions to be used by the compiler/interpreter being created.
jossiebk/tytus
Dec 2020 - Dec 2020
Contributions:29 pushes in 12 days
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