PhrasePlay is a Brazilian language-learning app — a “Spotify of bilingual phrases” — powered by natural AI voices and dynamic playlists. 🔗 https://www.phraseplay.com.br
- 👨💻 Senior Software Developer working across the full stack.
- ☁️ AWS Architect & Infrastructure Owner of the entire PhrasePlay ecosystem (EC2 · RDS PostgreSQL · S3 · CloudFront · SES · IAM · Load Balancer).
- 🛠️ Creator of JECH, a programming language written in C, built with a full compiler pipeline (lexer → parser → bytecode → VM).
- 📱 Experienced in building mobile and web products using React, React Native, Flutter, Django, Kotlin, and Swift.
- 🎧 Passionate about AI-generated voice technology and natural language learning systems.
- Leading the entire product lifecycle: architecture → development → deployment → growth.
- Backend development using Python/Django.
- Designing and maintaining a robust, scalable and cost-efficient AWS infrastructure.
- Building internal tools (PhraseStudio) for content creation.
- Working with multilingual AI voice models (ElevenLabs + custom voices).
JECH is a fully custom language built in C, featuring:
- Lexer
- Parser
- Abstract Syntax Tree
- Bytecode Generator
- Virtual Machine
- Commands like
say,keep, variables, assignments, and basic control structures
JECH is an educational project created to document and teach how a programming language works from the inside out.
Backend: Python · Django · FastAPI · NodeJS Frontend: React · VueJS Mobile React Native · Flutter Infrastructure: AWS (EC2, RDS, S3, SES, CloudFront, IAM, VPC, ALB) Languages: C · Python · TypeScript · Kotlin · Swift Databases: PostgreSQL DevOps / Tools: Docker · GitHub Actions · Nginx · Linux
📧 joaolucas.deoliveira56@gmail.com 🔗 App — https://www.phraseplay.com.br

