David César Hernán Cao

I currently work as a full stack developer making hybrid apps for macOS & Windows using Tauri, TypeScript, React and the backend with Rust. CADstar is a healthcare startup dedicated to the development of high-tech dental scanners.

Worked as full stack developer and DevOps chores at SE Motion web with Java and Angular, PostgreSQL and MongoDB as main databases. Motion is a CRM for sports training classes for millions of users in the USA and UK, which has an administration panel that allows the user to make their own team/organization website with visual no-code tools.

Worked as full stack developer at BracketPal web with Nitrogen Erlang web framework. BracketPal was a league and tournament CRM focused on beach volleyball in the USA and Australia

Development of python data-intensive marketing applications with a data lake for The User Acquisition Team for creating A/B testing on users metrics from mobile video games like Sniper 3D, War Machines among others Main stack: Python, Apache Spark, Databricks, Airflow, Docker, GitlabCI, AWS.

Built a fintech mobile ewallet app with React Native Designed and built microservices in Node JS with AWS services from the ground up.

Designed and built web apps in React Developed REST APIs with Python and Flask for backend services Deployed services using Cloud Foundry on company's internal cloud

• Implemented features over in-house GraphQL engine and server that feed the web and mobile apps. • Worked into the Facebook’s Tao erlang implentation graph database with PostgreSQL. • Worked over an in-house automated testing tool with API Blueprint on the top of Klarna’s Katt library.

• Analysis, development for a messaging app in Erlang with Cowboy web server using websockets • Using several data bases like Elasticsearch, Cassandra and Cayley. • Building test cases with Common Test Suite

Development of a REST server for a medical app in Erlang with Cowboy web server and saving image results in AWS S3. • Using several data bases like PostgreSQL, Riak K/V Store. • Building test cases with Common Suite and Eunit framework. • Mantenance of Inaka’s open source repositories on Github.

• Analysis, development and maintenance of services in C and SQL. • Resolution of produccion issues and process automation by shell scripting.

• Development and maintenance of services in Pro C/C++. • Generation and documentation of testing cases and process automation of process by shell Scripting.