Cassio Santos

I developed features related to capacity management of seat reservations, wheelchairs, bikes, bulky luggage, etc. For seat reservations, we worked in algorithms for seat scoring, in order to influence the behavior of the users to make sure it optimizes for a maximum load of vehicles as well as maximum ancillary revenue. I also worked in the logic to transfer passengers' assigned seats to the new vehicle with the least impact on customers possible. Stack: Kotlin, Spring, AWS, K8s, K6, Terraform and more.

I've been designing and building features for a legal software used daily by over 30000 active users in Brazil. I used different languages, tools, and techniques such as Java, Kotlin, AppEngine, DataStore, Elasticsearch, Redis, Jersey, React, and Agile Methodologies.

I designed and built micro-services in Python, Java, and Go using tools and services such as NATS, RabbitMQ, Docker, Gitlab CI, AWS Lambda, and more. I rewrote the tenant management system from Java to Go (using REST API, MongoDB, AWS SES, AWS Lambda, Sendgrid, automated tests, integrated build in Gitlab CI). I also built internal libraries to consume this service in Python, Go, and Java. I created an internal service to manage email subscriptions. I used Python, Lambda, Gitlab CI, and React.

I was responsible for designing and building new modules and new integrations using tools, techniques, and concepts such as Scrum, Kanban, Code Review, Static Analysis, Security Analysis, Quality Analysis, and Architectural Decision Records. I built software for internal communications using tools such as PHP, Python, Go, Java, RabbitMQ, AWS (Lambda, SES, EC2, RDS), Sendgrid, Symfony, Doctrine2, Flask, MongoDB, and Docker. I was responsible for implementing security tools and risk mitigation.

I built software for an eLearning company using tools such as PHP, Doctrine2, MongoDB, AWS (RDS, EC2, SQS, SES), Symfony, and ReactJS.